* [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update
@ 2023-01-31 22:56 Taylor Simpson
2023-01-31 22:56 ` [PATCH v5 01/14] Hexagon (target/hexagon) Add overrides for jumpr31 instructions Taylor Simpson
` (13 more replies)
0 siblings, 14 replies; 36+ messages in thread
From: Taylor Simpson @ 2023-01-31 22:56 UTC (permalink / raw)
To: qemu-devel
Cc: tsimpson, richard.henderson, philmd, ale, anjo, bcain, quic_mathbern
The idef-parser skips the change-of-flow (COF) instructions, so add
overrides
The new toolchain allows us to execute the HVX tests
New generator enables significant improvement to TCG generation for
predicated instructions by removing the need for slot_cancelled
**** Changes in v2 ****
Add a new generator for analyze_<tag> instructions. Pouplate the
DisasContext ahead of generating code.
**** Changes in v3 ****
Cleanup of analysis code
Added test updates enabled by new toolchain container
**** Changes in v4 ****
Additional patch for bug fix
Remove pkt_has_store_s1 from runtime state with dealloc-return patch
New patches to utilize new analyzer to improve predicated instructions
**** Changes in v5 ****
Don't remove code that is needed for --disable-hexagon-idef-parser config
pkt_has_store_s1 runtime field and mem_load[1248] functions
Add understanding of idef-parser to analyzer
Additional patch to determine when pkt_has_store_s1 needs to be set
Update fGEN_TCG_<tag> to preserve --disable-hexagon-idef-parser config
in Remove gen_log_predicated_reg_write[_pair] patch
Move tcg_temp_free_i64 into gen_log_vreg_write
Add get_result_qreg function
Taylor Simpson (14):
Hexagon (target/hexagon) Add overrides for jumpr31 instructions
Hexagon (target/hexagon) Add overrides for callr
Hexagon (target/hexagon) Add overrides for endloop1/endloop01
Hexagon (target/hexagon) Add overrides for dealloc-return instructions
Hexagon (target/hexagon) Analyze packet before generating TCG
Hexagon (target/hexagon) Don't set pkt_has_store_s1 when not needed
Hexagon (target/hexagon) Analyze packet for HVX
Hexagon (tests/tcg/hexagon) Update preg_alias.c
Hexagon (tests/tcg/hexagon) Remove __builtin from scatter_gather
Hexagon (tests/tcg/hexagon) Enable HVX tests
Hexagon (target/hexagon) Change subtract from zero to change sign
Hexagon (target/hexagon) Remove gen_log_predicated_reg_write[_pair]
Hexagon (target/hexagon) Reduce manipulation of slot_cancelled
Hexagon (target/hexagon) Improve code gen for predicated HVX
instructions
target/hexagon/cpu.h | 5 +-
target/hexagon/gen_tcg.h | 82 +++-
target/hexagon/gen_tcg_hvx.h | 17 +-
target/hexagon/macros.h | 31 +-
target/hexagon/op_helper.h | 3 +-
target/hexagon/translate.h | 77 +--
target/hexagon/attribs_def.h.inc | 1 +
target/hexagon/genptr.c | 306 +++++++-----
target/hexagon/idef-parser/parser-helpers.c | 12 +-
target/hexagon/op_helper.c | 51 +-
target/hexagon/translate.c | 273 ++++++-----
tests/tcg/hexagon/fpstuff.c | 31 +-
tests/tcg/hexagon/preg_alias.c | 10 +-
tests/tcg/hexagon/scatter_gather.c | 513 +++++++++++---------
target/hexagon/README | 38 +-
target/hexagon/gen_analyze_funcs.py | 252 ++++++++++
target/hexagon/gen_helper_funcs.py | 19 +-
target/hexagon/gen_helper_protos.py | 12 +-
target/hexagon/gen_tcg_funcs.py | 166 +++----
target/hexagon/hex_common.py | 10 +-
target/hexagon/idef-parser/idef-parser.lex | 4 +-
target/hexagon/idef-parser/idef-parser.y | 7 +-
target/hexagon/meson.build | 11 +-
tests/tcg/hexagon/Makefile.target | 13 +-
24 files changed, 1185 insertions(+), 759 deletions(-)
create mode 100755 target/hexagon/gen_analyze_funcs.py
--
2.17.1
^ permalink raw reply [flat|nested] 36+ messages in thread
* [PATCH v5 01/14] Hexagon (target/hexagon) Add overrides for jumpr31 instructions
2023-01-31 22:56 [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
@ 2023-01-31 22:56 ` Taylor Simpson
2023-02-01 12:05 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 02/14] Hexagon (target/hexagon) Add overrides for callr Taylor Simpson
` (12 subsequent siblings)
13 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-01-31 22:56 UTC (permalink / raw)
To: qemu-devel
Cc: tsimpson, richard.henderson, philmd, ale, anjo, bcain, quic_mathbern
Add overrides for
SL2_jumpr31 Unconditional
SL2_jumpr31_t Predicated true (old value)
SL2_jumpr31_f Predicated false (old value)
SL2_jumpr31_tnew Predicated true (new value)
SL2_jumpr31_fnew Predicated false (new value)
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
target/hexagon/gen_tcg.h | 15 ++++++++++++++-
target/hexagon/genptr.c | 10 +++++++++-
2 files changed, 23 insertions(+), 2 deletions(-)
diff --git a/target/hexagon/gen_tcg.h b/target/hexagon/gen_tcg.h
index 19697b42a5..d644e59a63 100644
--- a/target/hexagon/gen_tcg.h
+++ b/target/hexagon/gen_tcg.h
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -1015,6 +1015,19 @@
#define fGEN_TCG_S2_asl_r_r_sat(SHORTCODE) \
gen_asl_r_r_sat(RdV, RsV, RtV)
+#define fGEN_TCG_SL2_jumpr31(SHORTCODE) \
+ gen_jumpr(ctx, hex_gpr[HEX_REG_LR])
+
+#define fGEN_TCG_SL2_jumpr31_t(SHORTCODE) \
+ gen_cond_jumpr31(ctx, TCG_COND_EQ, hex_pred[0])
+#define fGEN_TCG_SL2_jumpr31_f(SHORTCODE) \
+ gen_cond_jumpr31(ctx, TCG_COND_NE, hex_pred[0])
+
+#define fGEN_TCG_SL2_jumpr31_tnew(SHORTCODE) \
+ gen_cond_jumpr31(ctx, TCG_COND_EQ, hex_new_pred_value[0])
+#define fGEN_TCG_SL2_jumpr31_fnew(SHORTCODE) \
+ gen_cond_jumpr31(ctx, TCG_COND_NE, hex_new_pred_value[0])
+
/* Floating point */
#define fGEN_TCG_F2_conv_sf2df(SHORTCODE) \
gen_helper_conv_sf2df(RddV, cpu_env, RsV)
diff --git a/target/hexagon/genptr.c b/target/hexagon/genptr.c
index 90db99024f..23fb808e37 100644
--- a/target/hexagon/genptr.c
+++ b/target/hexagon/genptr.c
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -593,6 +593,14 @@ static void gen_cond_jumpr(DisasContext *ctx, TCGv dst_pc,
gen_write_new_pc_addr(ctx, dst_pc, cond, pred);
}
+static void gen_cond_jumpr31(DisasContext *ctx, TCGCond cond, TCGv pred)
+{
+ TCGv LSB = tcg_temp_new();
+ tcg_gen_andi_tl(LSB, pred, 1);
+ gen_cond_jumpr(ctx, hex_gpr[HEX_REG_LR], cond, LSB);
+ tcg_temp_free(LSB);
+}
+
static void gen_cond_jump(DisasContext *ctx, TCGCond cond, TCGv pred,
int pc_off)
{
--
2.17.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH v5 02/14] Hexagon (target/hexagon) Add overrides for callr
2023-01-31 22:56 [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
2023-01-31 22:56 ` [PATCH v5 01/14] Hexagon (target/hexagon) Add overrides for jumpr31 instructions Taylor Simpson
@ 2023-01-31 22:56 ` Taylor Simpson
2023-02-01 12:08 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 03/14] Hexagon (target/hexagon) Add overrides for endloop1/endloop01 Taylor Simpson
` (11 subsequent siblings)
13 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-01-31 22:56 UTC (permalink / raw)
To: qemu-devel
Cc: tsimpson, richard.henderson, philmd, ale, anjo, bcain, quic_mathbern
Add overrides for
J2_callr
J2_callrt
J2_callrf
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
target/hexagon/gen_tcg.h | 6 ++++++
target/hexagon/macros.h | 12 +-----------
target/hexagon/genptr.c | 20 ++++++++++++++++++++
3 files changed, 27 insertions(+), 11 deletions(-)
diff --git a/target/hexagon/gen_tcg.h b/target/hexagon/gen_tcg.h
index d644e59a63..9e8f3373ad 100644
--- a/target/hexagon/gen_tcg.h
+++ b/target/hexagon/gen_tcg.h
@@ -614,11 +614,17 @@
#define fGEN_TCG_J2_call(SHORTCODE) \
gen_call(ctx, riV)
+#define fGEN_TCG_J2_callr(SHORTCODE) \
+ gen_callr(ctx, RsV)
#define fGEN_TCG_J2_callt(SHORTCODE) \
gen_cond_call(ctx, PuV, TCG_COND_EQ, riV)
#define fGEN_TCG_J2_callf(SHORTCODE) \
gen_cond_call(ctx, PuV, TCG_COND_NE, riV)
+#define fGEN_TCG_J2_callrt(SHORTCODE) \
+ gen_cond_callr(ctx, TCG_COND_EQ, PuV, RsV)
+#define fGEN_TCG_J2_callrf(SHORTCODE) \
+ gen_cond_callr(ctx, TCG_COND_NE, PuV, RsV)
#define fGEN_TCG_J2_endloop0(SHORTCODE) \
gen_endloop0(ctx)
diff --git a/target/hexagon/macros.h b/target/hexagon/macros.h
index cd64bb8eec..8f1f82f8da 100644
--- a/target/hexagon/macros.h
+++ b/target/hexagon/macros.h
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -421,16 +421,6 @@ static inline TCGv gen_read_ireg(TCGv result, TCGv val, int shift)
#define fBRANCH(LOC, TYPE) fWRITE_NPC(LOC)
#define fJUMPR(REGNO, TARGET, TYPE) fBRANCH(TARGET, COF_TYPE_JUMPR)
#define fHINTJR(TARGET) { /* Not modelled in qemu */}
-#define fCALL(A) \
- do { \
- fWRITE_LR(fREAD_NPC()); \
- fBRANCH(A, COF_TYPE_CALL); \
- } while (0)
-#define fCALLR(A) \
- do { \
- fWRITE_LR(fREAD_NPC()); \
- fBRANCH(A, COF_TYPE_CALLR); \
- } while (0)
#define fWRITE_LOOP_REGS0(START, COUNT) \
do { \
WRITE_RREG(HEX_REG_LC0, COUNT); \
diff --git a/target/hexagon/genptr.c b/target/hexagon/genptr.c
index 23fb808e37..360bcd0a19 100644
--- a/target/hexagon/genptr.c
+++ b/target/hexagon/genptr.c
@@ -710,6 +710,14 @@ static void gen_call(DisasContext *ctx, int pc_off)
gen_write_new_pc_pcrel(ctx, pc_off, TCG_COND_ALWAYS, NULL);
}
+static void gen_callr(DisasContext *ctx, TCGv new_pc)
+{
+ TCGv next_PC =
+ tcg_constant_tl(ctx->pkt->pc + ctx->pkt->encod_pkt_size_in_bytes);
+ gen_log_reg_write(HEX_REG_LR, next_PC);
+ gen_write_new_pc_addr(ctx, new_pc, TCG_COND_ALWAYS, NULL);
+}
+
static void gen_cond_call(DisasContext *ctx, TCGv pred,
TCGCond cond, int pc_off)
{
@@ -726,6 +734,18 @@ static void gen_cond_call(DisasContext *ctx, TCGv pred,
gen_set_label(skip);
}
+static void gen_cond_callr(DisasContext *ctx,
+ TCGCond cond, TCGv pred, TCGv new_pc)
+{
+ TCGv lsb = tcg_temp_new();
+ TCGLabel *skip = gen_new_label();
+ tcg_gen_andi_tl(lsb, pred, 1);
+ tcg_gen_brcondi_tl(cond, lsb, 0, skip);
+ tcg_temp_free(lsb);
+ gen_callr(ctx, new_pc);
+ gen_set_label(skip);
+}
+
static void gen_endloop0(DisasContext *ctx)
{
TCGv lpcfg = tcg_temp_local_new();
--
2.17.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH v5 03/14] Hexagon (target/hexagon) Add overrides for endloop1/endloop01
2023-01-31 22:56 [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
2023-01-31 22:56 ` [PATCH v5 01/14] Hexagon (target/hexagon) Add overrides for jumpr31 instructions Taylor Simpson
2023-01-31 22:56 ` [PATCH v5 02/14] Hexagon (target/hexagon) Add overrides for callr Taylor Simpson
@ 2023-01-31 22:56 ` Taylor Simpson
2023-02-01 12:29 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 04/14] Hexagon (target/hexagon) Add overrides for dealloc-return instructions Taylor Simpson
` (10 subsequent siblings)
13 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-01-31 22:56 UTC (permalink / raw)
To: qemu-devel
Cc: tsimpson, richard.henderson, philmd, ale, anjo, bcain, quic_mathbern
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
target/hexagon/gen_tcg.h | 4 ++
target/hexagon/genptr.c | 79 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 83 insertions(+)
diff --git a/target/hexagon/gen_tcg.h b/target/hexagon/gen_tcg.h
index 9e8f3373ad..6267f51ccc 100644
--- a/target/hexagon/gen_tcg.h
+++ b/target/hexagon/gen_tcg.h
@@ -628,6 +628,10 @@
#define fGEN_TCG_J2_endloop0(SHORTCODE) \
gen_endloop0(ctx)
+#define fGEN_TCG_J2_endloop1(SHORTCODE) \
+ gen_endloop1(ctx)
+#define fGEN_TCG_J2_endloop01(SHORTCODE) \
+ gen_endloop01(ctx)
/*
* Compound compare and jump instructions
diff --git a/target/hexagon/genptr.c b/target/hexagon/genptr.c
index 360bcd0a19..e17ac93a59 100644
--- a/target/hexagon/genptr.c
+++ b/target/hexagon/genptr.c
@@ -803,6 +803,85 @@ static void gen_endloop0(DisasContext *ctx)
tcg_temp_free(lpcfg);
}
+static void gen_endloop1(DisasContext *ctx)
+{
+ /*
+ * if (hex_gpr[HEX_REG_LC1] > 1) {
+ * PC = hex_gpr[HEX_REG_SA1];
+ * hex_new_value[HEX_REG_LC1] = hex_gpr[HEX_REG_LC1] - 1;
+ * }
+ */
+ TCGLabel *label = gen_new_label();
+ tcg_gen_brcondi_tl(TCG_COND_LEU, hex_gpr[HEX_REG_LC1], 1, label);
+ {
+ gen_jumpr(ctx, hex_gpr[HEX_REG_SA1]);
+ tcg_gen_subi_tl(hex_new_value[HEX_REG_LC1], hex_gpr[HEX_REG_LC1], 1);
+ }
+ gen_set_label(label);
+}
+
+static void gen_endloop01(DisasContext *ctx)
+{
+ TCGv lpcfg = tcg_temp_local_new();
+
+ GET_USR_FIELD(USR_LPCFG, lpcfg);
+
+ /*
+ * if (lpcfg == 1) {
+ * hex_new_pred_value[3] = 0xff;
+ * hex_pred_written |= 1 << 3;
+ * }
+ */
+ TCGLabel *label1 = gen_new_label();
+ tcg_gen_brcondi_tl(TCG_COND_NE, lpcfg, 1, label1);
+ {
+ tcg_gen_movi_tl(hex_new_pred_value[3], 0xff);
+ tcg_gen_ori_tl(hex_pred_written, hex_pred_written, 1 << 3);
+ }
+ gen_set_label(label1);
+
+ /*
+ * if (lpcfg) {
+ * SET_USR_FIELD(USR_LPCFG, lpcfg - 1);
+ * }
+ */
+ TCGLabel *label2 = gen_new_label();
+ tcg_gen_brcondi_tl(TCG_COND_EQ, lpcfg, 0, label2);
+ {
+ tcg_gen_subi_tl(lpcfg, lpcfg, 1);
+ SET_USR_FIELD(USR_LPCFG, lpcfg);
+ }
+ gen_set_label(label2);
+
+ /*
+ * if (hex_gpr[HEX_REG_LC0] > 1) {
+ * PC = hex_gpr[HEX_REG_SA0];
+ * hex_new_value[HEX_REG_LC0] = hex_gpr[HEX_REG_LC0] - 1;
+ * } else {
+ * if (hex_gpr[HEX_REG_LC1] > 1) {
+ * hex_next_pc = hex_gpr[HEX_REG_SA1];
+ * hex_new_value[HEX_REG_LC1] = hex_gpr[HEX_REG_LC1] - 1;
+ * }
+ * }
+ */
+ TCGLabel *label3 = gen_new_label();
+ TCGLabel *done = gen_new_label();
+ tcg_gen_brcondi_tl(TCG_COND_LEU, hex_gpr[HEX_REG_LC0], 1, label3);
+ {
+ gen_jumpr(ctx, hex_gpr[HEX_REG_SA0]);
+ tcg_gen_subi_tl(hex_new_value[HEX_REG_LC0], hex_gpr[HEX_REG_LC0], 1);
+ tcg_gen_br(done);
+ }
+ gen_set_label(label3);
+ tcg_gen_brcondi_tl(TCG_COND_LEU, hex_gpr[HEX_REG_LC1], 1, done);
+ {
+ gen_jumpr(ctx, hex_gpr[HEX_REG_SA1]);
+ tcg_gen_subi_tl(hex_new_value[HEX_REG_LC1], hex_gpr[HEX_REG_LC1], 1);
+ }
+ gen_set_label(done);
+ tcg_temp_free(lpcfg);
+}
+
static void gen_cmp_jumpnv(DisasContext *ctx,
TCGCond cond, TCGv val, TCGv src, int pc_off)
{
--
2.17.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH v5 04/14] Hexagon (target/hexagon) Add overrides for dealloc-return instructions
2023-01-31 22:56 [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
` (2 preceding siblings ...)
2023-01-31 22:56 ` [PATCH v5 03/14] Hexagon (target/hexagon) Add overrides for endloop1/endloop01 Taylor Simpson
@ 2023-01-31 22:56 ` Taylor Simpson
2023-02-01 13:04 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 05/14] Hexagon (target/hexagon) Analyze packet before generating TCG Taylor Simpson
` (9 subsequent siblings)
13 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-01-31 22:56 UTC (permalink / raw)
To: qemu-devel
Cc: tsimpson, richard.henderson, philmd, ale, anjo, bcain, quic_mathbern
These instructions perform a deallocframe+return (jumpr r31)
Add overrides for
L4_return
SL2_return
L4_return_t
L4_return_f
L4_return_tnew_pt
L4_return_fnew_pt
L4_return_tnew_pnt
L4_return_fnew_pnt
SL2_return_t
SL2_return_f
SL2_return_tnew
SL2_return_fnew
This patch eliminates the last helper that uses write_new_pc, so we
remove it from op_helper.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
target/hexagon/gen_tcg.h | 54 ++++++++++++++++++++++++
target/hexagon/genptr.c | 86 ++++++++++++++++++++++++++++++++++++++
target/hexagon/op_helper.c | 26 +-----------
3 files changed, 141 insertions(+), 25 deletions(-)
diff --git a/target/hexagon/gen_tcg.h b/target/hexagon/gen_tcg.h
index 6267f51ccc..8282ff3fc5 100644
--- a/target/hexagon/gen_tcg.h
+++ b/target/hexagon/gen_tcg.h
@@ -508,6 +508,60 @@
#define fGEN_TCG_S2_storerinew_pcr(SHORTCODE) \
fGEN_TCG_STORE_pcr(2, fSTORE(1, 4, EA, NtN))
+/*
+ * dealloc_return
+ * Assembler mapped to
+ * r31:30 = dealloc_return(r30):raw
+ */
+#define fGEN_TCG_L4_return(SHORTCODE) \
+ gen_return(ctx, RddV, RsV)
+
+/*
+ * sub-instruction version (no RddV, so handle it manually)
+ */
+#define fGEN_TCG_SL2_return(SHORTCODE) \
+ do { \
+ TCGv_i64 RddV = tcg_temp_new_i64(); \
+ gen_return(ctx, RddV, hex_gpr[HEX_REG_FP]); \
+ gen_log_reg_write_pair(HEX_REG_FP, RddV); \
+ tcg_temp_free_i64(RddV); \
+ } while (0)
+
+/*
+ * Conditional returns follow this naming convention
+ * _t predicate true
+ * _f predicate false
+ * _tnew_pt predicate.new true predict taken
+ * _fnew_pt predicate.new false predict taken
+ * _tnew_pnt predicate.new true predict not taken
+ * _fnew_pnt predicate.new false predict not taken
+ * Predictions are not modelled in QEMU
+ *
+ * Example:
+ * if (p1) r31:30 = dealloc_return(r30):raw
+ */
+#define fGEN_TCG_L4_return_t(SHORTCODE) \
+ gen_cond_return(ctx, RddV, RsV, PvV, TCG_COND_EQ);
+#define fGEN_TCG_L4_return_f(SHORTCODE) \
+ gen_cond_return(ctx, RddV, RsV, PvV, TCG_COND_NE)
+#define fGEN_TCG_L4_return_tnew_pt(SHORTCODE) \
+ gen_cond_return(ctx, RddV, RsV, PvN, TCG_COND_EQ)
+#define fGEN_TCG_L4_return_fnew_pt(SHORTCODE) \
+ gen_cond_return(ctx, RddV, RsV, PvN, TCG_COND_NE)
+#define fGEN_TCG_L4_return_tnew_pnt(SHORTCODE) \
+ gen_cond_return(ctx, RddV, RsV, PvN, TCG_COND_EQ)
+#define fGEN_TCG_L4_return_fnew_pnt(SHORTCODE) \
+ gen_cond_return(ctx, RddV, RsV, PvN, TCG_COND_NE)
+
+#define fGEN_TCG_SL2_return_t(SHORTCODE) \
+ gen_cond_return_subinsn(ctx, TCG_COND_EQ, hex_pred[0])
+#define fGEN_TCG_SL2_return_f(SHORTCODE) \
+ gen_cond_return_subinsn(ctx, TCG_COND_NE, hex_pred[0])
+#define fGEN_TCG_SL2_return_tnew(SHORTCODE) \
+ gen_cond_return_subinsn(ctx, TCG_COND_EQ, hex_new_pred_value[0])
+#define fGEN_TCG_SL2_return_fnew(SHORTCODE) \
+ gen_cond_return_subinsn(ctx, TCG_COND_NE, hex_new_pred_value[0])
+
/*
* Mathematical operations with more than one definition require
* special handling
diff --git a/target/hexagon/genptr.c b/target/hexagon/genptr.c
index e17ac93a59..efd36f760f 100644
--- a/target/hexagon/genptr.c
+++ b/target/hexagon/genptr.c
@@ -746,6 +746,92 @@ static void gen_cond_callr(DisasContext *ctx,
gen_set_label(skip);
}
+/* frame ^= (int64_t)FRAMEKEY << 32 */
+static void gen_frame_unscramble(TCGv_i64 frame)
+{
+ TCGv_i64 framekey = tcg_temp_new_i64();
+ tcg_gen_extu_i32_i64(framekey, hex_gpr[HEX_REG_FRAMEKEY]);
+ tcg_gen_shli_i64(framekey, framekey, 32);
+ tcg_gen_xor_i64(frame, frame, framekey);
+ tcg_temp_free_i64(framekey);
+}
+
+static void gen_load_frame(DisasContext *ctx, TCGv_i64 frame, TCGv EA)
+{
+ Insn *insn = ctx->insn; /* Needed for CHECK_NOSHUF */
+ CHECK_NOSHUF(EA, 8);
+ tcg_gen_qemu_ld64(frame, EA, ctx->mem_idx);
+}
+
+static void gen_return_base(DisasContext *ctx, TCGv_i64 dst, TCGv src,
+ TCGv r29)
+{
+ /*
+ * frame = *src
+ * dst = frame_unscramble(frame)
+ * SP = src + 8
+ * PC = dst.w[1]
+ */
+ TCGv_i64 frame = tcg_temp_new_i64();
+ TCGv r31 = tcg_temp_new();
+
+ gen_load_frame(ctx, frame, src);
+ gen_frame_unscramble(frame);
+ tcg_gen_mov_i64(dst, frame);
+ tcg_gen_addi_tl(r29, src, 8);
+ tcg_gen_extrh_i64_i32(r31, dst);
+ gen_jumpr(ctx, r31);
+
+ tcg_temp_free_i64(frame);
+ tcg_temp_free(r31);
+}
+
+static void gen_return(DisasContext *ctx, TCGv_i64 dst, TCGv src)
+{
+ TCGv r29 = tcg_temp_new();
+ gen_return_base(ctx, dst, src, r29);
+ gen_log_reg_write(HEX_REG_SP, r29);
+ tcg_temp_free(r29);
+}
+
+/* if (pred) dst = dealloc_return(src):raw */
+static void gen_cond_return(DisasContext *ctx, TCGv_i64 dst, TCGv src,
+ TCGv pred, TCGCond cond)
+{
+ TCGv LSB = tcg_temp_new();
+ TCGv mask = tcg_temp_new();
+ TCGv r29 = tcg_temp_local_new();
+ TCGLabel *skip = gen_new_label();
+ tcg_gen_andi_tl(LSB, pred, 1);
+
+ /* Initialize the results in case the predicate is false */
+ tcg_gen_movi_i64(dst, 0);
+ tcg_gen_movi_tl(r29, 0);
+
+ /* Set the bit in hex_slot_cancelled if the predicate is flase */
+ tcg_gen_movi_tl(mask, 1 << ctx->insn->slot);
+ tcg_gen_or_tl(mask, hex_slot_cancelled, mask);
+ tcg_gen_movcond_tl(cond, hex_slot_cancelled, LSB, tcg_constant_tl(0),
+ mask, hex_slot_cancelled);
+ tcg_temp_free(mask);
+
+ tcg_gen_brcondi_tl(cond, LSB, 0, skip);
+ tcg_temp_free(LSB);
+ gen_return_base(ctx, dst, src, r29);
+ gen_set_label(skip);
+ gen_log_predicated_reg_write(HEX_REG_SP, r29, ctx->insn->slot);
+ tcg_temp_free(r29);
+}
+
+/* sub-instruction version (no RddV, so handle it manually) */
+static void gen_cond_return_subinsn(DisasContext *ctx, TCGCond cond, TCGv pred)
+{
+ TCGv_i64 RddV = tcg_temp_local_new_i64();
+ gen_cond_return(ctx, RddV, hex_gpr[HEX_REG_FP], pred, cond);
+ gen_log_predicated_reg_write_pair(HEX_REG_FP, RddV, ctx->insn->slot);
+ tcg_temp_free_i64(RddV);
+}
+
static void gen_endloop0(DisasContext *ctx)
{
TCGv lpcfg = tcg_temp_local_new();
diff --git a/target/hexagon/op_helper.c b/target/hexagon/op_helper.c
index 35449ef524..38b8aee193 100644
--- a/target/hexagon/op_helper.c
+++ b/target/hexagon/op_helper.c
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -105,30 +105,6 @@ void log_store64(CPUHexagonState *env, target_ulong addr,
env->mem_log_stores[slot].data64 = val;
}
-void write_new_pc(CPUHexagonState *env, bool pkt_has_multi_cof,
- target_ulong addr)
-{
- HEX_DEBUG_LOG("write_new_pc(0x" TARGET_FMT_lx ")\n", addr);
-
- if (pkt_has_multi_cof) {
- /*
- * If more than one branch is taken in a packet, only the first one
- * is actually done.
- */
- if (env->branch_taken) {
- HEX_DEBUG_LOG("INFO: multiple branches taken in same packet, "
- "ignoring the second one\n");
- } else {
- fCHECK_PCALIGN(addr);
- env->gpr[HEX_REG_PC] = addr;
- env->branch_taken = 1;
- }
- } else {
- fCHECK_PCALIGN(addr);
- env->gpr[HEX_REG_PC] = addr;
- }
-}
-
/* Handy place to set a breakpoint */
void HELPER(debug_start_packet)(CPUHexagonState *env)
{
--
2.17.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH v5 05/14] Hexagon (target/hexagon) Analyze packet before generating TCG
2023-01-31 22:56 [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
` (3 preceding siblings ...)
2023-01-31 22:56 ` [PATCH v5 04/14] Hexagon (target/hexagon) Add overrides for dealloc-return instructions Taylor Simpson
@ 2023-01-31 22:56 ` Taylor Simpson
2023-02-23 17:02 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 06/14] Hexagon (target/hexagon) Don't set pkt_has_store_s1 when not needed Taylor Simpson
` (8 subsequent siblings)
13 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-01-31 22:56 UTC (permalink / raw)
To: qemu-devel
Cc: tsimpson, richard.henderson, philmd, ale, anjo, bcain, quic_mathbern
We create a new generator that creates an analyze_<tag> function for
each instruction. Currently, these functions record the writes to
R, P, and C registers by calling ctx_log_reg_write[_pair] or
ctx_log_pred_write.
During gen_start_packet, we invoke the analyze_<tag> function for
each instruction in the packet, and we mark the implicit register
and predicate writes.
Doing the analysis up front has several advantages
- We remove calls to ctx_log_* from gen_tcg_funcs.py and genptr.c
- After the analysis is performed, we can initialize hex_new_value
for each of the predicated assignments rather than during TCG
generation for the instructions
- This is a stepping stone for future work where the analysis will
include the set of registers that are read. In cases where
the packet doesn't have an overlap between the registers that are
written and registers that are read, we can avoid the intermediate
step of writing to hex_new_value. Note that other checks will also
be needed (e.g., no instructions can raise an exception).
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
target/hexagon/translate.h | 46 ++--
target/hexagon/genptr.c | 5 +-
target/hexagon/idef-parser/parser-helpers.c | 7 +-
target/hexagon/translate.c | 162 +++++++------
target/hexagon/README | 10 +-
target/hexagon/gen_analyze_funcs.py | 237 ++++++++++++++++++++
target/hexagon/gen_tcg_funcs.py | 23 +-
target/hexagon/meson.build | 11 +-
8 files changed, 383 insertions(+), 118 deletions(-)
create mode 100755 target/hexagon/gen_analyze_funcs.py
diff --git a/target/hexagon/translate.h b/target/hexagon/translate.h
index d971f4f095..d45d3a4bb0 100644
--- a/target/hexagon/translate.h
+++ b/target/hexagon/translate.h
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -38,6 +38,7 @@ typedef struct DisasContext {
int reg_log[REG_WRITES_MAX];
int reg_log_idx;
DECLARE_BITMAP(regs_written, TOTAL_PER_THREAD_REGS);
+ DECLARE_BITMAP(predicated_regs, TOTAL_PER_THREAD_REGS);
int preg_log[PRED_WRITES_MAX];
int preg_log_idx;
DECLARE_BITMAP(pregs_written, NUM_PREGS);
@@ -62,32 +63,39 @@ typedef struct DisasContext {
bool is_tight_loop;
} DisasContext;
-static inline void ctx_log_reg_write(DisasContext *ctx, int rnum)
+static inline void ctx_log_pred_write(DisasContext *ctx, int pnum)
{
- if (test_bit(rnum, ctx->regs_written)) {
- HEX_DEBUG_LOG("WARNING: Multiple writes to r%d\n", rnum);
+ if (!test_bit(pnum, ctx->pregs_written)) {
+ ctx->preg_log[ctx->preg_log_idx] = pnum;
+ ctx->preg_log_idx++;
+ set_bit(pnum, ctx->pregs_written);
}
- ctx->reg_log[ctx->reg_log_idx] = rnum;
- ctx->reg_log_idx++;
- set_bit(rnum, ctx->regs_written);
-}
-
-static inline void ctx_log_reg_write_pair(DisasContext *ctx, int rnum)
-{
- ctx_log_reg_write(ctx, rnum);
- ctx_log_reg_write(ctx, rnum + 1);
}
-static inline void ctx_log_pred_write(DisasContext *ctx, int pnum)
+static inline void ctx_log_reg_write(DisasContext *ctx, int rnum,
+ bool is_predicated)
{
- ctx->preg_log[ctx->preg_log_idx] = pnum;
- ctx->preg_log_idx++;
- set_bit(pnum, ctx->pregs_written);
+ if (rnum == HEX_REG_P3_0_ALIASED) {
+ for (int i = 0; i < NUM_PREGS; i++) {
+ ctx_log_pred_write(ctx, i);
+ }
+ } else {
+ if (!test_bit(rnum, ctx->regs_written)) {
+ ctx->reg_log[ctx->reg_log_idx] = rnum;
+ ctx->reg_log_idx++;
+ set_bit(rnum, ctx->regs_written);
+ }
+ if (is_predicated) {
+ set_bit(rnum, ctx->predicated_regs);
+ }
+ }
}
-static inline bool is_preloaded(DisasContext *ctx, int num)
+static inline void ctx_log_reg_write_pair(DisasContext *ctx, int rnum,
+ bool is_predicated)
{
- return test_bit(num, ctx->regs_written);
+ ctx_log_reg_write(ctx, rnum, is_predicated);
+ ctx_log_reg_write(ctx, rnum + 1, is_predicated);
}
static inline bool is_vreg_preloaded(DisasContext *ctx, int num)
diff --git a/target/hexagon/genptr.c b/target/hexagon/genptr.c
index efd36f760f..67ec3ac551 100644
--- a/target/hexagon/genptr.c
+++ b/target/hexagon/genptr.c
@@ -189,6 +189,7 @@ void gen_log_pred_write(DisasContext *ctx, int pnum, TCGv val)
hex_new_pred_value[pnum], base_val);
}
tcg_gen_ori_tl(hex_pred_written, hex_pred_written, 1 << pnum);
+ set_bit(pnum, ctx->pregs_written);
tcg_temp_free(base_val);
}
@@ -271,7 +272,6 @@ static void gen_write_p3_0(DisasContext *ctx, TCGv control_reg)
for (int i = 0; i < NUM_PREGS; i++) {
tcg_gen_extract_tl(hex_p8, control_reg, i * 8, 8);
gen_log_pred_write(ctx, i, hex_p8);
- ctx_log_pred_write(ctx, i);
}
tcg_temp_free(hex_p8);
}
@@ -290,7 +290,6 @@ static inline void gen_write_ctrl_reg(DisasContext *ctx, int reg_num,
gen_write_p3_0(ctx, val);
} else {
gen_log_reg_write(reg_num, val);
- ctx_log_reg_write(ctx, reg_num);
if (reg_num == HEX_REG_QEMU_PKT_CNT) {
ctx->num_packets = 0;
}
@@ -313,10 +312,8 @@ static inline void gen_write_ctrl_reg_pair(DisasContext *ctx, int reg_num,
tcg_gen_extrh_i64_i32(val32, val);
gen_log_reg_write(reg_num + 1, val32);
tcg_temp_free(val32);
- ctx_log_reg_write(ctx, reg_num + 1);
} else {
gen_log_reg_write_pair(reg_num, val);
- ctx_log_reg_write_pair(ctx, reg_num);
if (reg_num == HEX_REG_QEMU_PKT_CNT) {
ctx->num_packets = 0;
ctx->num_insns = 0;
diff --git a/target/hexagon/idef-parser/parser-helpers.c b/target/hexagon/idef-parser/parser-helpers.c
index 8110686c51..de9838806b 100644
--- a/target/hexagon/idef-parser/parser-helpers.c
+++ b/target/hexagon/idef-parser/parser-helpers.c
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2022 rev.ng Labs Srl. All Rights Reserved.
+ * Copyright(c) 2019-2023 rev.ng Labs Srl. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -1438,10 +1438,6 @@ void gen_write_reg(Context *c, YYLTYPE *locp, HexValue *reg, HexValue *value)
locp,
"gen_log_reg_write(", ®->reg.id, ", ",
&value_m, ");\n");
- OUT(c,
- locp,
- "ctx_log_reg_write(ctx, ", ®->reg.id,
- ");\n");
gen_rvalue_free(c, locp, reg);
gen_rvalue_free(c, locp, &value_m);
}
@@ -1894,7 +1890,6 @@ void gen_pred_assign(Context *c, YYLTYPE *locp, HexValue *left_pred,
if (is_direct) {
OUT(c, locp, "gen_log_pred_write(ctx, ", pred_id, ", ", left_pred,
");\n");
- OUT(c, locp, "ctx_log_pred_write(ctx, ", pred_id, ");\n");
gen_rvalue_free(c, locp, left_pred);
}
/* Free temporary value */
diff --git a/target/hexagon/translate.c b/target/hexagon/translate.c
index 75f28e08ad..fedcf8730c 100644
--- a/target/hexagon/translate.c
+++ b/target/hexagon/translate.c
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -29,6 +29,15 @@
#include "translate.h"
#include "printinsn.h"
+#include "analyze_funcs_generated.c.inc"
+
+typedef void (*AnalyzeInsn)(DisasContext *ctx);
+static const AnalyzeInsn opcode_analyze[XX_LAST_OPCODE] = {
+#define OPCODE(X) [X] = analyze_##X
+#include "opcodes_def_generated.h.inc"
+#undef OPCODE
+};
+
TCGv hex_gpr[TOTAL_PER_THREAD_REGS];
TCGv hex_pred[NUM_PREGS];
TCGv hex_this_PC;
@@ -265,6 +274,76 @@ static bool need_next_PC(DisasContext *ctx)
return false;
}
+/*
+ * The opcode_analyze functions mark most of the writes in a packet
+ * However, there are some implicit writes marked as attributes
+ * of the applicable instructions.
+ */
+static void mark_implicit_reg_write(DisasContext *ctx, int attrib, int rnum)
+{
+ uint16_t opcode = ctx->insn->opcode;
+ if (GET_ATTRIB(opcode, attrib)) {
+ /*
+ * USR is used to set overflow and FP exceptions,
+ * so treat it as conditional
+ */
+ bool is_predicated = GET_ATTRIB(opcode, A_CONDEXEC) ||
+ rnum == HEX_REG_USR;
+
+ /* LC0/LC1 is conditionally written by endloop instructions */
+ if ((rnum == HEX_REG_LC0 || rnum == HEX_REG_LC1) &&
+ (opcode == J2_endloop0 ||
+ opcode == J2_endloop1 ||
+ opcode == J2_endloop01)) {
+ is_predicated = true;
+ }
+
+ ctx_log_reg_write(ctx, rnum, is_predicated);
+ }
+}
+
+static void mark_implicit_reg_writes(DisasContext *ctx)
+{
+ mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_FP, HEX_REG_FP);
+ mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_SP, HEX_REG_SP);
+ mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_LR, HEX_REG_LR);
+ mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_LC0, HEX_REG_LC0);
+ mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_SA0, HEX_REG_SA0);
+ mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_LC1, HEX_REG_LC1);
+ mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_SA1, HEX_REG_SA1);
+ mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_USR, HEX_REG_USR);
+ mark_implicit_reg_write(ctx, A_FPOP, HEX_REG_USR);
+}
+
+static void mark_implicit_pred_write(DisasContext *ctx, int attrib, int pnum)
+{
+ if (GET_ATTRIB(ctx->insn->opcode, attrib)) {
+ ctx_log_pred_write(ctx, pnum);
+ }
+}
+
+static void mark_implicit_pred_writes(DisasContext *ctx)
+{
+ mark_implicit_pred_write(ctx, A_IMPLICIT_WRITES_P0, 0);
+ mark_implicit_pred_write(ctx, A_IMPLICIT_WRITES_P1, 1);
+ mark_implicit_pred_write(ctx, A_IMPLICIT_WRITES_P2, 2);
+ mark_implicit_pred_write(ctx, A_IMPLICIT_WRITES_P3, 3);
+}
+
+static void analyze_packet(DisasContext *ctx)
+{
+ Packet *pkt = ctx->pkt;
+ for (int i = 0; i < pkt->num_insns; i++) {
+ Insn *insn = &pkt->insn[i];
+ ctx->insn = insn;
+ if (opcode_analyze[insn->opcode]) {
+ opcode_analyze[insn->opcode](ctx);
+ }
+ mark_implicit_reg_writes(ctx);
+ mark_implicit_pred_writes(ctx);
+ }
+}
+
static void gen_start_packet(DisasContext *ctx)
{
Packet *pkt = ctx->pkt;
@@ -275,6 +354,7 @@ static void gen_start_packet(DisasContext *ctx)
ctx->next_PC = next_PC;
ctx->reg_log_idx = 0;
bitmap_zero(ctx->regs_written, TOTAL_PER_THREAD_REGS);
+ bitmap_zero(ctx->predicated_regs, TOTAL_PER_THREAD_REGS);
ctx->preg_log_idx = 0;
bitmap_zero(ctx->pregs_written, NUM_PREGS);
ctx->future_vregs_idx = 0;
@@ -291,6 +371,14 @@ static void gen_start_packet(DisasContext *ctx)
ctx->s1_store_processed = false;
ctx->pre_commit = true;
+ analyze_packet(ctx);
+
+ /*
+ * pregs_written is used both in the analyze phase as well as the code
+ * gen phase, so clear it again.
+ */
+ bitmap_zero(ctx->pregs_written, NUM_PREGS);
+
if (HEX_DEBUG) {
/* Handy place to set a breakpoint before the packet executes */
gen_helper_debug_start_packet(cpu_env);
@@ -313,6 +401,16 @@ static void gen_start_packet(DisasContext *ctx)
tcg_gen_movi_tl(hex_pred_written, 0);
}
+ /* Preload the predicated registers into hex_new_value[i] */
+ if (!bitmap_empty(ctx->predicated_regs, TOTAL_PER_THREAD_REGS)) {
+ int i = find_first_bit(ctx->predicated_regs, TOTAL_PER_THREAD_REGS);
+ while (i < TOTAL_PER_THREAD_REGS) {
+ tcg_gen_mov_tl(hex_new_value[i], hex_gpr[i]);
+ i = find_next_bit(ctx->predicated_regs, TOTAL_PER_THREAD_REGS,
+ i + 1);
+ }
+ }
+
if (pkt->pkt_has_hvx) {
tcg_gen_movi_tl(hex_VRegs_updated, 0);
tcg_gen_movi_tl(hex_QRegs_updated, 0);
@@ -336,66 +434,6 @@ bool is_gather_store_insn(DisasContext *ctx)
return false;
}
-/*
- * The LOG_*_WRITE macros mark most of the writes in a packet
- * However, there are some implicit writes marked as attributes
- * of the applicable instructions.
- */
-static void mark_implicit_reg_write(DisasContext *ctx, int attrib, int rnum)
-{
- uint16_t opcode = ctx->insn->opcode;
- if (GET_ATTRIB(opcode, attrib)) {
- /*
- * USR is used to set overflow and FP exceptions,
- * so treat it as conditional
- */
- bool is_predicated = GET_ATTRIB(opcode, A_CONDEXEC) ||
- rnum == HEX_REG_USR;
-
- /* LC0/LC1 is conditionally written by endloop instructions */
- if ((rnum == HEX_REG_LC0 || rnum == HEX_REG_LC1) &&
- (opcode == J2_endloop0 ||
- opcode == J2_endloop1 ||
- opcode == J2_endloop01)) {
- is_predicated = true;
- }
-
- if (is_predicated && !is_preloaded(ctx, rnum)) {
- tcg_gen_mov_tl(hex_new_value[rnum], hex_gpr[rnum]);
- }
-
- ctx_log_reg_write(ctx, rnum);
- }
-}
-
-static void mark_implicit_pred_write(DisasContext *ctx, int attrib, int pnum)
-{
- if (GET_ATTRIB(ctx->insn->opcode, attrib)) {
- ctx_log_pred_write(ctx, pnum);
- }
-}
-
-static void mark_implicit_reg_writes(DisasContext *ctx)
-{
- mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_FP, HEX_REG_FP);
- mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_SP, HEX_REG_SP);
- mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_LR, HEX_REG_LR);
- mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_LC0, HEX_REG_LC0);
- mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_SA0, HEX_REG_SA0);
- mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_LC1, HEX_REG_LC1);
- mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_SA1, HEX_REG_SA1);
- mark_implicit_reg_write(ctx, A_IMPLICIT_WRITES_USR, HEX_REG_USR);
- mark_implicit_reg_write(ctx, A_FPOP, HEX_REG_USR);
-}
-
-static void mark_implicit_pred_writes(DisasContext *ctx)
-{
- mark_implicit_pred_write(ctx, A_IMPLICIT_WRITES_P0, 0);
- mark_implicit_pred_write(ctx, A_IMPLICIT_WRITES_P1, 1);
- mark_implicit_pred_write(ctx, A_IMPLICIT_WRITES_P2, 2);
- mark_implicit_pred_write(ctx, A_IMPLICIT_WRITES_P3, 3);
-}
-
static void mark_store_width(DisasContext *ctx)
{
uint16_t opcode = ctx->insn->opcode;
@@ -423,9 +461,7 @@ static void mark_store_width(DisasContext *ctx)
static void gen_insn(DisasContext *ctx)
{
if (ctx->insn->generate) {
- mark_implicit_reg_writes(ctx);
ctx->insn->generate(ctx);
- mark_implicit_pred_writes(ctx);
mark_store_width(ctx);
} else {
gen_exception_end_tb(ctx, HEX_EXCP_INVALID_OPCODE);
diff --git a/target/hexagon/README b/target/hexagon/README
index 6cb5affddb..d92731e346 100644
--- a/target/hexagon/README
+++ b/target/hexagon/README
@@ -52,6 +52,7 @@ header files in <BUILD_DIR>/target/hexagon
gen_tcg_func_table.py -> tcg_func_table_generated.c.inc
gen_helper_funcs.py -> helper_funcs_generated.c.inc
gen_idef_parser_funcs.py -> idef_parser_input.h
+ gen_analyze_funcs.py -> analyze_funcs_generated.c.inc
Qemu helper functions have 3 parts
DEF_HELPER declaration indicates the signature of the helper
@@ -87,7 +88,6 @@ tcg_funcs_generated.c.inc
TCGv RtV = hex_gpr[insn->regno[2]];
gen_helper_A2_add(RdV, cpu_env, RsV, RtV);
gen_log_reg_write(RdN, RdV);
- ctx_log_reg_write(ctx, RdN);
tcg_temp_free(RdV);
}
@@ -162,7 +162,6 @@ istruction.
gen_helper_V6_vaddw(cpu_env, VdV, VuV, VvV, slot);
tcg_temp_free(slot);
gen_log_vreg_write(ctx, VdV_off, VdN, EXT_DFL, insn->slot, false);
- ctx_log_vreg_write(ctx, VdN, EXT_DFL, false);
tcg_temp_free_ptr(VdV);
tcg_temp_free_ptr(VuV);
tcg_temp_free_ptr(VvV);
@@ -195,9 +194,14 @@ when the override is present.
vreg_src_off(ctx, VvN);
fGEN_TCG_V6_vaddw({ fHIDE(int i;) fVFOREACH(32, i) { VdV.w[i] = VuV.w[i] + VvV.w[i] ; } });
gen_log_vreg_write(ctx, VdV_off, VdN, EXT_DFL, insn->slot, false);
- ctx_log_vreg_write(ctx, VdN, EXT_DFL, false);
}
+We also generate an analyze_<tag> function for each instruction. Currently,
+these functions record the writes to registers by calling ctx_log_*. During
+gen_start_packet, we invoke the analyze_<tag> function for each instruction in
+the packet, and we mark the implicit writes. After the analysis is performed,
+we initialize hex_new_value for each of the predicated assignments.
+
In addition to instruction semantics, we use a generator to create the decode
tree. This generation is also a two step process. The first step is to run
target/hexagon/gen_dectree_import.c to produce
diff --git a/target/hexagon/gen_analyze_funcs.py b/target/hexagon/gen_analyze_funcs.py
new file mode 100755
index 0000000000..c45696bec8
--- /dev/null
+++ b/target/hexagon/gen_analyze_funcs.py
@@ -0,0 +1,237 @@
+#!/usr/bin/env python3
+
+##
+## Copyright(c) 2022-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, see <http://www.gnu.org/licenses/>.
+##
+
+import sys
+import re
+import string
+import hex_common
+
+##
+## Helpers for gen_analyze_func
+##
+def is_predicated(tag):
+ return 'A_CONDEXEC' in hex_common.attribdict[tag]
+
+def analyze_opn_old(f, tag, regtype, regid, regno):
+ regN = "%s%sN" % (regtype, regid)
+ predicated = "true" if is_predicated(tag) else "false"
+ if (regtype == "R"):
+ if (regid in {"ss", "tt"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ elif (regid in {"dd", "ee", "xx", "yy"}):
+ f.write(" const int %s = insn->regno[%d];\n" % (regN, regno))
+ f.write(" ctx_log_reg_write_pair(ctx, %s, %s);\n" % \
+ (regN, predicated))
+ elif (regid in {"s", "t", "u", "v"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ elif (regid in {"d", "e", "x", "y"}):
+ f.write(" const int %s = insn->regno[%d];\n" % (regN, regno))
+ f.write(" ctx_log_reg_write(ctx, %s, %s);\n" % \
+ (regN, predicated))
+ else:
+ print("Bad register parse: ", regtype, regid)
+ elif (regtype == "P"):
+ if (regid in {"s", "t", "u", "v"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ elif (regid in {"d", "e", "x"}):
+ f.write(" const int %s = insn->regno[%d];\n" % (regN, regno))
+ f.write(" ctx_log_pred_write(ctx, %s);\n" % (regN))
+ else:
+ print("Bad register parse: ", regtype, regid)
+ elif (regtype == "C"):
+ if (regid == "ss"):
+ f.write("// const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \
+ (regN, regno))
+ elif (regid == "dd"):
+ f.write(" const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \
+ (regN, regno))
+ f.write(" ctx_log_reg_write_pair(ctx, %s, %s);\n" % \
+ (regN, predicated))
+ elif (regid == "s"):
+ f.write("// const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \
+ (regN, regno))
+ elif (regid == "d"):
+ f.write(" const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \
+ (regN, regno))
+ f.write(" ctx_log_reg_write(ctx, %s, %s);\n" % \
+ (regN, predicated))
+ else:
+ print("Bad register parse: ", regtype, regid)
+ elif (regtype == "M"):
+ if (regid == "u"):
+ f.write("// const int %s = insn->regno[%d];\n"% \
+ (regN, regno))
+ else:
+ print("Bad register parse: ", regtype, regid)
+ elif (regtype == "V"):
+ if (regid in {"dd", "xx"}):
+ f.write("// const int %s = insn->regno[%d];\n" %\
+ (regN, regno))
+ elif (regid in {"uu", "vv"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ elif (regid in {"s", "u", "v", "w"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ elif (regid in {"d", "x", "y"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ else:
+ print("Bad register parse: ", regtype, regid)
+ elif (regtype == "Q"):
+ if (regid in {"d", "e", "x"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ elif (regid in {"s", "t", "u", "v"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ else:
+ print("Bad register parse: ", regtype, regid)
+ elif (regtype == "G"):
+ if (regid in {"dd"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ elif (regid in {"d"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ elif (regid in {"ss"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ elif (regid in {"s"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ else:
+ print("Bad register parse: ", regtype, regid)
+ elif (regtype == "S"):
+ if (regid in {"dd"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ elif (regid in {"d"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ elif (regid in {"ss"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ elif (regid in {"s"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ else:
+ print("Bad register parse: ", regtype, regid)
+ else:
+ print("Bad register parse: ", regtype, regid)
+
+def analyze_opn_new(f, tag, regtype, regid, regno):
+ regN = "%s%sN" % (regtype, regid)
+ if (regtype == "N"):
+ if (regid in {"s", "t"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ else:
+ print("Bad register parse: ", regtype, regid)
+ elif (regtype == "P"):
+ if (regid in {"t", "u", "v"}):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ else:
+ print("Bad register parse: ", regtype, regid)
+ elif (regtype == "O"):
+ if (regid == "s"):
+ f.write("// const int %s = insn->regno[%d];\n" % \
+ (regN, regno))
+ else:
+ print("Bad register parse: ", regtype, regid)
+ else:
+ print("Bad register parse: ", regtype, regid)
+
+def analyze_opn(f, tag, regtype, regid, toss, numregs, i):
+ if (hex_common.is_pair(regid)):
+ analyze_opn_old(f, tag, regtype, regid, i)
+ elif (hex_common.is_single(regid)):
+ if hex_common.is_old_val(regtype, regid, tag):
+ analyze_opn_old(f,tag, regtype, regid, i)
+ elif hex_common.is_new_val(regtype, regid, tag):
+ analyze_opn_new(f, tag, regtype, regid, i)
+ else:
+ print("Bad register parse: ", regtype, regid, toss, numregs)
+ else:
+ print("Bad register parse: ", regtype, regid, toss, numregs)
+
+##
+## Generate the code to analyze the instruction
+## For A2_add: Rd32=add(Rs32,Rt32), { RdV=RsV+RtV;}
+## We produce:
+## static void analyze_A2_add(DisasContext *ctx)
+## {
+## Insn *insn __attribute__((unused)) = ctx->insn;
+## const int RdN = insn->regno[0];
+## ctx_log_reg_write(ctx, RdN, false);
+## // const int RsN = insn->regno[1];
+## // const int RtN = insn->regno[2];
+## }
+##
+def gen_analyze_func(f, tag, regs, imms):
+ f.write("static void analyze_%s(DisasContext *ctx)\n" %tag)
+ f.write('{\n')
+
+ f.write(" Insn *insn __attribute__((unused)) = ctx->insn;\n")
+
+ i=0
+ ## Analyze all the registers
+ for regtype, regid, toss, numregs in regs:
+ analyze_opn(f, tag, regtype, regid, toss, numregs, i)
+ i += 1
+
+
+ f.write("}\n\n")
+
+def main():
+ hex_common.read_semantics_file(sys.argv[1])
+ hex_common.read_attribs_file(sys.argv[2])
+ hex_common.read_overrides_file(sys.argv[3])
+ hex_common.read_overrides_file(sys.argv[4])
+ ## Whether or not idef-parser is enabled is
+ ## determined by the number of arguments to
+ ## this script:
+ ##
+ ## 5 args. -> not enabled,
+ ## 6 args. -> idef-parser enabled.
+ ##
+ ## The 6:th arg. then holds a list of the successfully
+ ## parsed instructions.
+ is_idef_parser_enabled = len(sys.argv) > 6
+ if is_idef_parser_enabled:
+ hex_common.read_idef_parser_enabled_file(sys.argv[5])
+ hex_common.calculate_attribs()
+ tagregs = hex_common.get_tagregs()
+ tagimms = hex_common.get_tagimms()
+
+ with open(sys.argv[-1], 'w') as f:
+ f.write("#ifndef HEXAGON_TCG_FUNCS_H\n")
+ f.write("#define HEXAGON_TCG_FUNCS_H\n\n")
+
+ for tag in hex_common.tags:
+ gen_analyze_func(f, tag, tagregs[tag], tagimms[tag])
+
+ f.write("#endif /* HEXAGON_TCG_FUNCS_H */\n")
+
+if __name__ == "__main__":
+ main()
diff --git a/target/hexagon/gen_tcg_funcs.py b/target/hexagon/gen_tcg_funcs.py
index 7e8ba17ca2..5d686ebcf1 100755
--- a/target/hexagon/gen_tcg_funcs.py
+++ b/target/hexagon/gen_tcg_funcs.py
@@ -1,7 +1,7 @@
#!/usr/bin/env python3
##
-## Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved.
+## Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
@@ -44,15 +44,6 @@ def genptr_decl_pair_writable(f, tag, regtype, regid, regno):
(regN, regno))
else:
f.write(" const int %s = insn->regno[%d];\n" % (regN, regno))
- if ('A_CONDEXEC' in hex_common.attribdict[tag]):
- f.write(" if (!is_preloaded(ctx, %s)) {\n" % regN)
- f.write(" tcg_gen_mov_tl(hex_new_value[%s], hex_gpr[%s]);\n" % \
- (regN, regN))
- f.write(" }\n")
- f.write(" if (!is_preloaded(ctx, %s + 1)) {\n" % regN)
- f.write(" tcg_gen_mov_tl(hex_new_value[%s + 1], hex_gpr[%s + 1]);\n" % \
- (regN, regN))
- f.write(" }\n")
def genptr_decl_writable(f, tag, regtype, regid, regno):
regN="%s%sN" % (regtype,regid)
@@ -63,11 +54,6 @@ def genptr_decl_writable(f, tag, regtype, regid, regno):
(regN, regno))
else:
f.write(" const int %s = insn->regno[%d];\n" % (regN, regno))
- if ('A_CONDEXEC' in hex_common.attribdict[tag]):
- f.write(" if (!is_preloaded(ctx, %s)) {\n" % regN)
- f.write(" tcg_gen_mov_tl(hex_new_value[%s], hex_gpr[%s]);\n" % \
- (regN, regN))
- f.write(" }\n")
def genptr_decl(f, tag, regtype, regid, regno):
regN="%s%sN" % (regtype,regid)
@@ -465,8 +451,6 @@ def genptr_dst_write_pair(f, tag, regtype, regid):
else:
f.write(" gen_log_reg_write_pair(%s%sN, %s%sV);\n" % \
(regtype, regid, regtype, regid))
- f.write(" ctx_log_reg_write_pair(ctx, %s%sN);\n" % \
- (regtype, regid))
def genptr_dst_write(f, tag, regtype, regid):
if (regtype == "R"):
@@ -480,16 +464,12 @@ def genptr_dst_write(f, tag, regtype, regid):
else:
f.write(" gen_log_reg_write(%s%sN, %s%sV);\n" % \
(regtype, regid, regtype, regid))
- f.write(" ctx_log_reg_write(ctx, %s%sN);\n" % \
- (regtype, regid))
else:
print("Bad register parse: ", regtype, regid)
elif (regtype == "P"):
if (regid in {"d", "e", "x"}):
f.write(" gen_log_pred_write(ctx, %s%sN, %s%sV);\n" % \
(regtype, regid, regtype, regid))
- f.write(" ctx_log_pred_write(ctx, %s%sN);\n" % \
- (regtype, regid))
else:
print("Bad register parse: ", regtype, regid)
elif (regtype == "C"):
@@ -581,7 +561,6 @@ def genptr_dst_write_opn(f,regtype, regid, tag):
## TCGv RtV = hex_gpr[insn->regno[2]];
## <GEN>
## gen_log_reg_write(RdN, RdV);
-## ctx_log_reg_write(ctx, RdN);
## tcg_temp_free(RdV);
## }
##
diff --git a/target/hexagon/meson.build b/target/hexagon/meson.build
index c9d31d095c..48c9f53cfa 100644
--- a/target/hexagon/meson.build
+++ b/target/hexagon/meson.build
@@ -1,5 +1,5 @@
##
-## Copyright(c) 2020-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
+## Copyright(c) 2020-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
@@ -276,4 +276,13 @@ tcg_funcs_generated = custom_target(
)
hexagon_ss.add(tcg_funcs_generated)
+analyze_funcs_generated = custom_target(
+ 'analyze_funcs_generated.c.inc',
+ output: 'analyze_funcs_generated.c.inc',
+ depends: helper_dep,
+ depend_files: [hex_common_py, attribs_def, gen_tcg_h, gen_tcg_hvx_h],
+ command: [python, files('gen_analyze_funcs.py'), helper_in, '@OUTPUT@'],
+)
+hexagon_ss.add(analyze_funcs_generated)
+
target_arch += {'hexagon': hexagon_ss}
--
2.17.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH v5 06/14] Hexagon (target/hexagon) Don't set pkt_has_store_s1 when not needed
2023-01-31 22:56 [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
` (4 preceding siblings ...)
2023-01-31 22:56 ` [PATCH v5 05/14] Hexagon (target/hexagon) Analyze packet before generating TCG Taylor Simpson
@ 2023-01-31 22:56 ` Taylor Simpson
2023-02-16 12:46 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 07/14] Hexagon (target/hexagon) Analyze packet for HVX Taylor Simpson
` (7 subsequent siblings)
13 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-01-31 22:56 UTC (permalink / raw)
To: qemu-devel
Cc: tsimpson, richard.henderson, philmd, ale, anjo, bcain, quic_mathbern
The pkt_has_store_s1 field in CPUHexagonState is only needed in generated
helpers for scalar load instructions. See check_noshuf and mem_load[1248]
in op_helper.c.
We add logic in gen_analyze_funcs.py to set need_pkt_has_store_s1 in
DisasContext when it is needed at runtime.
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
target/hexagon/translate.h | 1 +
target/hexagon/attribs_def.h.inc | 1 +
target/hexagon/translate.c | 6 +++++-
target/hexagon/gen_analyze_funcs.py | 5 +++++
target/hexagon/hex_common.py | 1 +
5 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/target/hexagon/translate.h b/target/hexagon/translate.h
index d45d3a4bb0..34368b2186 100644
--- a/target/hexagon/translate.h
+++ b/target/hexagon/translate.h
@@ -61,6 +61,7 @@ typedef struct DisasContext {
TCGCond branch_cond;
target_ulong branch_dest;
bool is_tight_loop;
+ bool need_pkt_has_store_s1;
} DisasContext;
static inline void ctx_log_pred_write(DisasContext *ctx, int pnum)
diff --git a/target/hexagon/attribs_def.h.inc b/target/hexagon/attribs_def.h.inc
index 5d2a102c18..9874d1658f 100644
--- a/target/hexagon/attribs_def.h.inc
+++ b/target/hexagon/attribs_def.h.inc
@@ -44,6 +44,7 @@ DEF_ATTRIB(MEMSIZE_1B, "Memory width is 1 byte", "", "")
DEF_ATTRIB(MEMSIZE_2B, "Memory width is 2 bytes", "", "")
DEF_ATTRIB(MEMSIZE_4B, "Memory width is 4 bytes", "", "")
DEF_ATTRIB(MEMSIZE_8B, "Memory width is 8 bytes", "", "")
+DEF_ATTRIB(SCALAR_LOAD, "Load is scalar", "", "")
DEF_ATTRIB(SCALAR_STORE, "Store is scalar", "", "")
DEF_ATTRIB(REGWRSIZE_1B, "Memory width is 1 byte", "", "")
DEF_ATTRIB(REGWRSIZE_2B, "Memory width is 2 bytes", "", "")
diff --git a/target/hexagon/translate.c b/target/hexagon/translate.c
index fedcf8730c..8b33e6cd8f 100644
--- a/target/hexagon/translate.c
+++ b/target/hexagon/translate.c
@@ -333,6 +333,7 @@ static void mark_implicit_pred_writes(DisasContext *ctx)
static void analyze_packet(DisasContext *ctx)
{
Packet *pkt = ctx->pkt;
+ ctx->need_pkt_has_store_s1 = false;
for (int i = 0; i < pkt->num_insns; i++) {
Insn *insn = &pkt->insn[i];
ctx->insn = insn;
@@ -367,12 +368,15 @@ static void gen_start_packet(DisasContext *ctx)
for (i = 0; i < STORES_MAX; i++) {
ctx->store_width[i] = 0;
}
- tcg_gen_movi_tl(hex_pkt_has_store_s1, pkt->pkt_has_store_s1);
ctx->s1_store_processed = false;
ctx->pre_commit = true;
analyze_packet(ctx);
+ if (ctx->need_pkt_has_store_s1) {
+ tcg_gen_movi_tl(hex_pkt_has_store_s1, pkt->pkt_has_store_s1);
+ }
+
/*
* pregs_written is used both in the analyze phase as well as the code
* gen phase, so clear it again.
diff --git a/target/hexagon/gen_analyze_funcs.py b/target/hexagon/gen_analyze_funcs.py
index c45696bec8..ff5b69978c 100755
--- a/target/hexagon/gen_analyze_funcs.py
+++ b/target/hexagon/gen_analyze_funcs.py
@@ -200,6 +200,11 @@ def gen_analyze_func(f, tag, regs, imms):
analyze_opn(f, tag, regtype, regid, toss, numregs, i)
i += 1
+ has_generated_helper = (not hex_common.skip_qemu_helper(tag) and
+ not hex_common.is_idef_parser_enabled(tag))
+ if (has_generated_helper and
+ 'A_SCALAR_LOAD' in hex_common.attribdict[tag]):
+ f.write(" ctx->need_pkt_has_store_s1 = true;\n")
f.write("}\n\n")
diff --git a/target/hexagon/hex_common.py b/target/hexagon/hex_common.py
index a29f61bb4f..76da362c11 100755
--- a/target/hexagon/hex_common.py
+++ b/target/hexagon/hex_common.py
@@ -89,6 +89,7 @@ def calculate_attribs():
add_qemu_macro_attrib('fWRITE_P3', 'A_WRITES_PRED_REG')
add_qemu_macro_attrib('fSET_OVERFLOW', 'A_IMPLICIT_WRITES_USR')
add_qemu_macro_attrib('fSET_LPCFG', 'A_IMPLICIT_WRITES_USR')
+ add_qemu_macro_attrib('fLOAD', 'A_SCALAR_LOAD')
add_qemu_macro_attrib('fSTORE', 'A_SCALAR_STORE')
# Recurse down macros, find attributes from sub-macros
--
2.17.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH v5 07/14] Hexagon (target/hexagon) Analyze packet for HVX
2023-01-31 22:56 [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
` (5 preceding siblings ...)
2023-01-31 22:56 ` [PATCH v5 06/14] Hexagon (target/hexagon) Don't set pkt_has_store_s1 when not needed Taylor Simpson
@ 2023-01-31 22:56 ` Taylor Simpson
2023-02-16 13:09 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 08/14] Hexagon (tests/tcg/hexagon) Update preg_alias.c Taylor Simpson
` (6 subsequent siblings)
13 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-01-31 22:56 UTC (permalink / raw)
To: qemu-devel
Cc: tsimpson, richard.henderson, philmd, ale, anjo, bcain, quic_mathbern
Extend the analyze_<tag> functions for HVX vector and predicate writes
Remove calls to ctx_log_vreg_write[_pair] from gen_tcg_funcs.py
During gen_start_packet, reload the predicated HVX registers into
fugure_VRegs and tmp_VRegs
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
target/hexagon/translate.h | 14 ++++++++------
target/hexagon/translate.c | 30 +++++++++++++++++++++++++++++
target/hexagon/gen_analyze_funcs.py | 17 +++++++++++++---
target/hexagon/gen_tcg_funcs.py | 18 -----------------
4 files changed, 52 insertions(+), 27 deletions(-)
diff --git a/target/hexagon/translate.h b/target/hexagon/translate.h
index 34368b2186..765f2c6a22 100644
--- a/target/hexagon/translate.h
+++ b/target/hexagon/translate.h
@@ -54,6 +54,8 @@ typedef struct DisasContext {
DECLARE_BITMAP(vregs_updated_tmp, NUM_VREGS);
DECLARE_BITMAP(vregs_updated, NUM_VREGS);
DECLARE_BITMAP(vregs_select, NUM_VREGS);
+ DECLARE_BITMAP(predicated_future_vregs, NUM_VREGS);
+ DECLARE_BITMAP(predicated_tmp_vregs, NUM_VREGS);
int qreg_log[NUM_QREGS];
bool qreg_is_predicated[NUM_QREGS];
int qreg_log_idx;
@@ -99,12 +101,6 @@ static inline void ctx_log_reg_write_pair(DisasContext *ctx, int rnum,
ctx_log_reg_write(ctx, rnum + 1, is_predicated);
}
-static inline bool is_vreg_preloaded(DisasContext *ctx, int num)
-{
- return test_bit(num, ctx->vregs_updated) ||
- test_bit(num, ctx->vregs_updated_tmp);
-}
-
intptr_t ctx_future_vreg_off(DisasContext *ctx, int regnum,
int num, bool alloc_ok);
intptr_t ctx_tmp_vreg_off(DisasContext *ctx, int regnum,
@@ -120,12 +116,18 @@ static inline void ctx_log_vreg_write(DisasContext *ctx,
ctx->vreg_log_idx++;
set_bit(rnum, ctx->vregs_updated);
+ if (is_predicated) {
+ set_bit(rnum, ctx->predicated_future_vregs);
+ }
}
if (type == EXT_NEW) {
set_bit(rnum, ctx->vregs_select);
}
if (type == EXT_TMP) {
set_bit(rnum, ctx->vregs_updated_tmp);
+ if (is_predicated) {
+ set_bit(rnum, ctx->predicated_tmp_vregs);
+ }
}
}
diff --git a/target/hexagon/translate.c b/target/hexagon/translate.c
index 8b33e6cd8f..53fd935db7 100644
--- a/target/hexagon/translate.c
+++ b/target/hexagon/translate.c
@@ -364,6 +364,8 @@ static void gen_start_packet(DisasContext *ctx)
bitmap_zero(ctx->vregs_updated_tmp, NUM_VREGS);
bitmap_zero(ctx->vregs_updated, NUM_VREGS);
bitmap_zero(ctx->vregs_select, NUM_VREGS);
+ bitmap_zero(ctx->predicated_future_vregs, NUM_VREGS);
+ bitmap_zero(ctx->predicated_tmp_vregs, NUM_VREGS);
ctx->qreg_log_idx = 0;
for (i = 0; i < STORES_MAX; i++) {
ctx->store_width[i] = 0;
@@ -415,6 +417,34 @@ static void gen_start_packet(DisasContext *ctx)
}
}
+ /* Preload the predicated HVX registers into future_VRegs and tmp_VRegs */
+ if (!bitmap_empty(ctx->predicated_future_vregs, NUM_VREGS)) {
+ int i = find_first_bit(ctx->predicated_future_vregs, NUM_VREGS);
+ while (i < NUM_VREGS) {
+ const intptr_t VdV_off =
+ ctx_future_vreg_off(ctx, i, 1, true);
+ intptr_t src_off = offsetof(CPUHexagonState, VRegs[i]);
+ tcg_gen_gvec_mov(MO_64, VdV_off,
+ src_off,
+ sizeof(MMVector),
+ sizeof(MMVector));
+ i = find_next_bit(ctx->predicated_future_vregs, NUM_VREGS, i + 1);
+ }
+ }
+ if (!bitmap_empty(ctx->predicated_tmp_vregs, NUM_VREGS)) {
+ int i = find_first_bit(ctx->predicated_tmp_vregs, NUM_VREGS);
+ while (i < NUM_VREGS) {
+ const intptr_t VdV_off =
+ ctx_tmp_vreg_off(ctx, i, 1, true);
+ intptr_t src_off = offsetof(CPUHexagonState, VRegs[i]);
+ tcg_gen_gvec_mov(MO_64, VdV_off,
+ src_off,
+ sizeof(MMVector),
+ sizeof(MMVector));
+ i = find_next_bit(ctx->predicated_tmp_vregs, NUM_VREGS, i + 1);
+ }
+ }
+
if (pkt->pkt_has_hvx) {
tcg_gen_movi_tl(hex_VRegs_updated, 0);
tcg_gen_movi_tl(hex_QRegs_updated, 0);
diff --git a/target/hexagon/gen_analyze_funcs.py b/target/hexagon/gen_analyze_funcs.py
index ff5b69978c..3a1db46ac3 100755
--- a/target/hexagon/gen_analyze_funcs.py
+++ b/target/hexagon/gen_analyze_funcs.py
@@ -83,9 +83,16 @@ def analyze_opn_old(f, tag, regtype, regid, regno):
else:
print("Bad register parse: ", regtype, regid)
elif (regtype == "V"):
+ newv = "EXT_DFL"
+ if (hex_common.is_new_result(tag)):
+ newv = "EXT_NEW"
+ elif (hex_common.is_tmp_result(tag)):
+ newv = "EXT_TMP"
if (regid in {"dd", "xx"}):
- f.write("// const int %s = insn->regno[%d];\n" %\
+ f.write(" const int %s = insn->regno[%d];\n" %\
(regN, regno))
+ f.write(" ctx_log_vreg_write_pair(ctx, %s, %s, %s);\n" % \
+ (regN, newv, predicated))
elif (regid in {"uu", "vv"}):
f.write("// const int %s = insn->regno[%d];\n" % \
(regN, regno))
@@ -93,14 +100,18 @@ def analyze_opn_old(f, tag, regtype, regid, regno):
f.write("// const int %s = insn->regno[%d];\n" % \
(regN, regno))
elif (regid in {"d", "x", "y"}):
- f.write("// const int %s = insn->regno[%d];\n" % \
+ f.write(" const int %s = insn->regno[%d];\n" % \
(regN, regno))
+ f.write(" ctx_log_vreg_write(ctx, %s, %s, %s);\n" % \
+ (regN, newv, predicated))
else:
print("Bad register parse: ", regtype, regid)
elif (regtype == "Q"):
if (regid in {"d", "e", "x"}):
- f.write("// const int %s = insn->regno[%d];\n" % \
+ f.write(" const int %s = insn->regno[%d];\n" % \
(regN, regno))
+ f.write(" ctx_log_qreg_write(ctx, %s, %s);\n" % \
+ (regN, predicated))
elif (regid in {"s", "t", "u", "v"}):
f.write("// const int %s = insn->regno[%d];\n" % \
(regN, regno))
diff --git a/target/hexagon/gen_tcg_funcs.py b/target/hexagon/gen_tcg_funcs.py
index 5d686ebcf1..3786ede44c 100755
--- a/target/hexagon/gen_tcg_funcs.py
+++ b/target/hexagon/gen_tcg_funcs.py
@@ -159,17 +159,6 @@ def genptr_decl(f, tag, regtype, regid, regno):
f.write(" ctx_future_vreg_off(ctx, %s%sN," % \
(regtype, regid))
f.write(" 1, true);\n");
- if 'A_CONDEXEC' in hex_common.attribdict[tag]:
- f.write(" if (!is_vreg_preloaded(ctx, %s)) {\n" % (regN))
- f.write(" intptr_t src_off =")
- f.write(" offsetof(CPUHexagonState, VRegs[%s%sN]);\n"% \
- (regtype, regid))
- f.write(" tcg_gen_gvec_mov(MO_64, %s%sV_off,\n" % \
- (regtype, regid))
- f.write(" src_off,\n")
- f.write(" sizeof(MMVector),\n")
- f.write(" sizeof(MMVector));\n")
- f.write(" }\n")
if (not hex_common.skip_qemu_helper(tag)):
f.write(" TCGv_ptr %s%sV = tcg_temp_new_ptr();\n" % \
@@ -495,9 +484,6 @@ def genptr_dst_write_ext(f, tag, regtype, regid, newv="EXT_DFL"):
(regtype, regid, regtype, regid))
f.write("%s, insn->slot, %s);\n" % \
(newv, is_predicated))
- f.write(" ctx_log_vreg_write_pair(ctx, %s%sN, %s,\n" % \
- (regtype, regid, newv))
- f.write(" %s);\n" % (is_predicated))
elif (regid in {"d", "x", "y"}):
if ('A_CONDEXEC' in hex_common.attribdict[tag]):
is_predicated = "true"
@@ -507,8 +493,6 @@ def genptr_dst_write_ext(f, tag, regtype, regid, newv="EXT_DFL"):
(regtype, regid, regtype, regid, newv))
f.write("insn->slot, %s);\n" % \
(is_predicated))
- f.write(" ctx_log_vreg_write(ctx, %s%sN, %s, %s);\n" % \
- (regtype, regid, newv, is_predicated))
else:
print("Bad register parse: ", regtype, regid)
elif (regtype == "Q"):
@@ -520,8 +504,6 @@ def genptr_dst_write_ext(f, tag, regtype, regid, newv="EXT_DFL"):
f.write(" gen_log_qreg_write(%s%sV_off, %s%sN, %s, " % \
(regtype, regid, regtype, regid, newv))
f.write("insn->slot, %s);\n" % (is_predicated))
- f.write(" ctx_log_qreg_write(ctx, %s%sN, %s);\n" % \
- (regtype, regid, is_predicated))
else:
print("Bad register parse: ", regtype, regid)
else:
--
2.17.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH v5 08/14] Hexagon (tests/tcg/hexagon) Update preg_alias.c
2023-01-31 22:56 [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
` (6 preceding siblings ...)
2023-01-31 22:56 ` [PATCH v5 07/14] Hexagon (target/hexagon) Analyze packet for HVX Taylor Simpson
@ 2023-01-31 22:56 ` Taylor Simpson
2023-02-16 13:11 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 09/14] Hexagon (tests/tcg/hexagon) Remove __builtin from scatter_gather Taylor Simpson
` (5 subsequent siblings)
13 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-01-31 22:56 UTC (permalink / raw)
To: qemu-devel
Cc: tsimpson, richard.henderson, philmd, ale, anjo, bcain, quic_mathbern
Add control registers (c4, c5) to clobbers list
Made possible by new toolchain container
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
tests/tcg/hexagon/preg_alias.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/tests/tcg/hexagon/preg_alias.c b/tests/tcg/hexagon/preg_alias.c
index b44a8112b4..8798fbcaf3 100644
--- a/tests/tcg/hexagon/preg_alias.c
+++ b/tests/tcg/hexagon/preg_alias.c
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -65,7 +65,7 @@ static inline void creg_alias(int cval, PRegs *pregs)
: "=r"(pregs->pregs.p0), "=r"(pregs->pregs.p1),
"=r"(pregs->pregs.p2), "=r"(pregs->pregs.p3)
: "r"(cval)
- : "p0", "p1", "p2", "p3");
+ : "c4", "p0", "p1", "p2", "p3");
}
int err;
@@ -92,7 +92,7 @@ static inline void creg_alias_pair(unsigned int cval, PRegs *pregs)
: "=r"(pregs->pregs.p0), "=r"(pregs->pregs.p1),
"=r"(pregs->pregs.p2), "=r"(pregs->pregs.p3), "=r"(c5)
: "r"(cval_pair)
- : "p0", "p1", "p2", "p3");
+ : "c4", "c5", "p0", "p1", "p2", "p3");
check(c5, 0xdeadbeef);
}
@@ -117,7 +117,7 @@ static void test_packet(void)
"}\n\t"
: "+r"(result)
: "r"(0xffffffff), "r"(0xff00ffff), "r"(0x837ed653)
- : "p0", "p1", "p2", "p3");
+ : "c4", "p0", "p1", "p2", "p3");
check(result, old_val);
/* Test a predicated store */
@@ -129,7 +129,7 @@ static void test_packet(void)
"}\n\t"
:
: "r"(0), "r"(0xffffffff), "r"(&result)
- : "p0", "p1", "p2", "p3", "memory");
+ : "c4", "p0", "p1", "p2", "p3", "memory");
check(result, 0x0);
}
--
2.17.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH v5 09/14] Hexagon (tests/tcg/hexagon) Remove __builtin from scatter_gather
2023-01-31 22:56 [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
` (7 preceding siblings ...)
2023-01-31 22:56 ` [PATCH v5 08/14] Hexagon (tests/tcg/hexagon) Update preg_alias.c Taylor Simpson
@ 2023-01-31 22:56 ` Taylor Simpson
2023-02-16 13:46 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 10/14] Hexagon (tests/tcg/hexagon) Enable HVX tests Taylor Simpson
` (4 subsequent siblings)
13 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-01-31 22:56 UTC (permalink / raw)
To: qemu-devel
Cc: tsimpson, richard.henderson, philmd, ale, anjo, bcain, quic_mathbern
Replace __builtin_* with inline assembly
The __builtin's are subject to change with different compiler
releases, so might break
Mark arrays as aligned when accessed as HVX vectors
Clean up comments
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
tests/tcg/hexagon/scatter_gather.c | 513 +++++++++++++++--------------
1 file changed, 271 insertions(+), 242 deletions(-)
diff --git a/tests/tcg/hexagon/scatter_gather.c b/tests/tcg/hexagon/scatter_gather.c
index b93eb18133..bf8b5e0317 100644
--- a/tests/tcg/hexagon/scatter_gather.c
+++ b/tests/tcg/hexagon/scatter_gather.c
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -40,47 +40,6 @@ typedef long HVX_VectorPair __attribute__((__vector_size__(256)))
typedef long HVX_VectorPred __attribute__((__vector_size__(128)))
__attribute__((aligned(128)));
-#define VSCATTER_16(BASE, RGN, OFF, VALS) \
- __builtin_HEXAGON_V6_vscattermh_128B((int)BASE, RGN, OFF, VALS)
-#define VSCATTER_16_MASKED(MASK, BASE, RGN, OFF, VALS) \
- __builtin_HEXAGON_V6_vscattermhq_128B(MASK, (int)BASE, RGN, OFF, VALS)
-#define VSCATTER_32(BASE, RGN, OFF, VALS) \
- __builtin_HEXAGON_V6_vscattermw_128B((int)BASE, RGN, OFF, VALS)
-#define VSCATTER_32_MASKED(MASK, BASE, RGN, OFF, VALS) \
- __builtin_HEXAGON_V6_vscattermwq_128B(MASK, (int)BASE, RGN, OFF, VALS)
-#define VSCATTER_16_32(BASE, RGN, OFF, VALS) \
- __builtin_HEXAGON_V6_vscattermhw_128B((int)BASE, RGN, OFF, VALS)
-#define VSCATTER_16_32_MASKED(MASK, BASE, RGN, OFF, VALS) \
- __builtin_HEXAGON_V6_vscattermhwq_128B(MASK, (int)BASE, RGN, OFF, VALS)
-#define VSCATTER_16_ACC(BASE, RGN, OFF, VALS) \
- __builtin_HEXAGON_V6_vscattermh_add_128B((int)BASE, RGN, OFF, VALS)
-#define VSCATTER_32_ACC(BASE, RGN, OFF, VALS) \
- __builtin_HEXAGON_V6_vscattermw_add_128B((int)BASE, RGN, OFF, VALS)
-#define VSCATTER_16_32_ACC(BASE, RGN, OFF, VALS) \
- __builtin_HEXAGON_V6_vscattermhw_add_128B((int)BASE, RGN, OFF, VALS)
-
-#define VGATHER_16(DSTADDR, BASE, RGN, OFF) \
- __builtin_HEXAGON_V6_vgathermh_128B(DSTADDR, (int)BASE, RGN, OFF)
-#define VGATHER_16_MASKED(DSTADDR, MASK, BASE, RGN, OFF) \
- __builtin_HEXAGON_V6_vgathermhq_128B(DSTADDR, MASK, (int)BASE, RGN, OFF)
-#define VGATHER_32(DSTADDR, BASE, RGN, OFF) \
- __builtin_HEXAGON_V6_vgathermw_128B(DSTADDR, (int)BASE, RGN, OFF)
-#define VGATHER_32_MASKED(DSTADDR, MASK, BASE, RGN, OFF) \
- __builtin_HEXAGON_V6_vgathermwq_128B(DSTADDR, MASK, (int)BASE, RGN, OFF)
-#define VGATHER_16_32(DSTADDR, BASE, RGN, OFF) \
- __builtin_HEXAGON_V6_vgathermhw_128B(DSTADDR, (int)BASE, RGN, OFF)
-#define VGATHER_16_32_MASKED(DSTADDR, MASK, BASE, RGN, OFF) \
- __builtin_HEXAGON_V6_vgathermhwq_128B(DSTADDR, MASK, (int)BASE, RGN, OFF)
-
-#define VSHUFF_H(V) \
- __builtin_HEXAGON_V6_vshuffh_128B(V)
-#define VSPLAT_H(X) \
- __builtin_HEXAGON_V6_lvsplath_128B(X)
-#define VAND_VAL(PRED, VAL) \
- __builtin_HEXAGON_V6_vandvrt_128B(PRED, VAL)
-#define VDEAL_H(V) \
- __builtin_HEXAGON_V6_vdealh_128B(V)
-
int err;
/* define the number of rows/cols in a square matrix */
@@ -108,22 +67,22 @@ unsigned short vscatter16_32_ref[SCATTER_BUFFER_SIZE];
unsigned short vgather16_32_ref[MATRIX_SIZE];
/* declare the arrays of offsets */
-unsigned short half_offsets[MATRIX_SIZE];
-unsigned int word_offsets[MATRIX_SIZE];
+unsigned short half_offsets[MATRIX_SIZE] __attribute__((aligned(128)));
+unsigned int word_offsets[MATRIX_SIZE] __attribute__((aligned(128)));
/* declare the arrays of values */
-unsigned short half_values[MATRIX_SIZE];
-unsigned short half_values_acc[MATRIX_SIZE];
-unsigned short half_values_masked[MATRIX_SIZE];
-unsigned int word_values[MATRIX_SIZE];
-unsigned int word_values_acc[MATRIX_SIZE];
-unsigned int word_values_masked[MATRIX_SIZE];
+unsigned short half_values[MATRIX_SIZE] __attribute__((aligned(128)));
+unsigned short half_values_acc[MATRIX_SIZE] __attribute__((aligned(128)));
+unsigned short half_values_masked[MATRIX_SIZE] __attribute__((aligned(128)));
+unsigned int word_values[MATRIX_SIZE] __attribute__((aligned(128)));
+unsigned int word_values_acc[MATRIX_SIZE] __attribute__((aligned(128)));
+unsigned int word_values_masked[MATRIX_SIZE] __attribute__((aligned(128)));
/* declare the arrays of predicates */
-unsigned short half_predicates[MATRIX_SIZE];
-unsigned int word_predicates[MATRIX_SIZE];
+unsigned short half_predicates[MATRIX_SIZE] __attribute__((aligned(128)));
+unsigned int word_predicates[MATRIX_SIZE] __attribute__((aligned(128)));
-/* make this big enough for all the intrinsics */
+/* make this big enough for all the operations */
const size_t region_len = sizeof(vtcm);
/* optionally add sync instructions */
@@ -261,164 +220,201 @@ void create_offsets_values_preds_16_32(void)
}
}
-/* scatter the 16 bit elements using intrinsics */
+/* scatter the 16 bit elements using HVX */
void vector_scatter_16(void)
{
- /* copy the offsets and values to vectors */
- HVX_Vector offsets = *(HVX_Vector *)half_offsets;
- HVX_Vector values = *(HVX_Vector *)half_values;
-
- VSCATTER_16(&vtcm.vscatter16, region_len, offsets, values);
+ asm ("m0 = %1\n\t"
+ "v0 = vmem(%2 + #0)\n\t"
+ "v1 = vmem(%3 + #0)\n\t"
+ "vscatter(%0, m0, v0.h).h = v1\n\t"
+ : : "r"(vtcm.vscatter16), "r"(region_len),
+ "r"(half_offsets), "r"(half_values)
+ : "m0", "v0", "v1", "memory");
sync_scatter(vtcm.vscatter16);
}
-/* scatter-accumulate the 16 bit elements using intrinsics */
+/* scatter-accumulate the 16 bit elements using HVX */
void vector_scatter_16_acc(void)
{
- /* copy the offsets and values to vectors */
- HVX_Vector offsets = *(HVX_Vector *)half_offsets;
- HVX_Vector values = *(HVX_Vector *)half_values_acc;
-
- VSCATTER_16_ACC(&vtcm.vscatter16, region_len, offsets, values);
+ asm ("m0 = %1\n\t"
+ "v0 = vmem(%2 + #0)\n\t"
+ "v1 = vmem(%3 + #0)\n\t"
+ "vscatter(%0, m0, v0.h).h += v1\n\t"
+ : : "r"(vtcm.vscatter16), "r"(region_len),
+ "r"(half_offsets), "r"(half_values_acc)
+ : "m0", "v0", "v1", "memory");
sync_scatter(vtcm.vscatter16);
}
-/* scatter the 16 bit elements using intrinsics */
+/* masked scatter the 16 bit elements using HVX */
void vector_scatter_16_masked(void)
{
- /* copy the offsets and values to vectors */
- HVX_Vector offsets = *(HVX_Vector *)half_offsets;
- HVX_Vector values = *(HVX_Vector *)half_values_masked;
- HVX_Vector pred_reg = *(HVX_Vector *)half_predicates;
- HVX_VectorPred preds = VAND_VAL(pred_reg, ~0);
-
- VSCATTER_16_MASKED(preds, &vtcm.vscatter16, region_len, offsets, values);
+ asm ("r1 = #-1\n\t"
+ "v0 = vmem(%0 + #0)\n\t"
+ "q0 = vand(v0, r1)\n\t"
+ "m0 = %2\n\t"
+ "v0 = vmem(%3 + #0)\n\t"
+ "v1 = vmem(%4 + #0)\n\t"
+ "if (q0) vscatter(%1, m0, v0.h).h = v1\n\t"
+ : : "r"(half_predicates), "r"(vtcm.vscatter16), "r"(region_len),
+ "r"(half_offsets), "r"(half_values_masked)
+ : "r1", "q0", "m0", "q0", "v0", "v1", "memory");
sync_scatter(vtcm.vscatter16);
}
-/* scatter the 32 bit elements using intrinsics */
+/* scatter the 32 bit elements using HVX */
void vector_scatter_32(void)
{
- /* copy the offsets and values to vectors */
- HVX_Vector offsetslo = *(HVX_Vector *)word_offsets;
- HVX_Vector offsetshi = *(HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
- HVX_Vector valueslo = *(HVX_Vector *)word_values;
- HVX_Vector valueshi = *(HVX_Vector *)&word_values[MATRIX_SIZE / 2];
-
- VSCATTER_32(&vtcm.vscatter32, region_len, offsetslo, valueslo);
- VSCATTER_32(&vtcm.vscatter32, region_len, offsetshi, valueshi);
+ HVX_Vector *offsetslo = (HVX_Vector *)word_offsets;
+ HVX_Vector *offsetshi = (HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
+ HVX_Vector *valueslo = (HVX_Vector *)word_values;
+ HVX_Vector *valueshi = (HVX_Vector *)&word_values[MATRIX_SIZE / 2];
+
+ asm ("m0 = %1\n\t"
+ "v0 = vmem(%2 + #0)\n\t"
+ "v1 = vmem(%3 + #0)\n\t"
+ "vscatter(%0, m0, v0.w).w = v1\n\t"
+ : : "r"(vtcm.vscatter32), "r"(region_len),
+ "r"(offsetslo), "r"(valueslo)
+ : "m0", "v0", "v1", "memory");
+ asm ("m0 = %1\n\t"
+ "v0 = vmem(%2 + #0)\n\t"
+ "v1 = vmem(%3 + #0)\n\t"
+ "vscatter(%0, m0, v0.w).w = v1\n\t"
+ : : "r"(vtcm.vscatter32), "r"(region_len),
+ "r"(offsetshi), "r"(valueshi)
+ : "m0", "v0", "v1", "memory");
sync_scatter(vtcm.vscatter32);
}
-/* scatter-acc the 32 bit elements using intrinsics */
+/* scatter-accumulate the 32 bit elements using HVX */
void vector_scatter_32_acc(void)
{
- /* copy the offsets and values to vectors */
- HVX_Vector offsetslo = *(HVX_Vector *)word_offsets;
- HVX_Vector offsetshi = *(HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
- HVX_Vector valueslo = *(HVX_Vector *)word_values_acc;
- HVX_Vector valueshi = *(HVX_Vector *)&word_values_acc[MATRIX_SIZE / 2];
-
- VSCATTER_32_ACC(&vtcm.vscatter32, region_len, offsetslo, valueslo);
- VSCATTER_32_ACC(&vtcm.vscatter32, region_len, offsetshi, valueshi);
+ HVX_Vector *offsetslo = (HVX_Vector *)word_offsets;
+ HVX_Vector *offsetshi = (HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
+ HVX_Vector *valueslo = (HVX_Vector *)word_values_acc;
+ HVX_Vector *valueshi = (HVX_Vector *)&word_values_acc[MATRIX_SIZE / 2];
+
+ asm ("m0 = %1\n\t"
+ "v0 = vmem(%2 + #0)\n\t"
+ "v1 = vmem(%3 + #0)\n\t"
+ "vscatter(%0, m0, v0.w).w += v1\n\t"
+ : : "r"(vtcm.vscatter32), "r"(region_len),
+ "r"(offsetslo), "r"(valueslo)
+ : "m0", "v0", "v1", "memory");
+ asm ("m0 = %1\n\t"
+ "v0 = vmem(%2 + #0)\n\t"
+ "v1 = vmem(%3 + #0)\n\t"
+ "vscatter(%0, m0, v0.w).w += v1\n\t"
+ : : "r"(vtcm.vscatter32), "r"(region_len),
+ "r"(offsetshi), "r"(valueshi)
+ : "m0", "v0", "v1", "memory");
sync_scatter(vtcm.vscatter32);
}
-/* scatter the 32 bit elements using intrinsics */
+/* masked scatter the 32 bit elements using HVX */
void vector_scatter_32_masked(void)
{
- /* copy the offsets and values to vectors */
- HVX_Vector offsetslo = *(HVX_Vector *)word_offsets;
- HVX_Vector offsetshi = *(HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
- HVX_Vector valueslo = *(HVX_Vector *)word_values_masked;
- HVX_Vector valueshi = *(HVX_Vector *)&word_values_masked[MATRIX_SIZE / 2];
- HVX_Vector pred_reglo = *(HVX_Vector *)word_predicates;
- HVX_Vector pred_reghi = *(HVX_Vector *)&word_predicates[MATRIX_SIZE / 2];
- HVX_VectorPred predslo = VAND_VAL(pred_reglo, ~0);
- HVX_VectorPred predshi = VAND_VAL(pred_reghi, ~0);
-
- VSCATTER_32_MASKED(predslo, &vtcm.vscatter32, region_len, offsetslo,
- valueslo);
- VSCATTER_32_MASKED(predshi, &vtcm.vscatter32, region_len, offsetshi,
- valueshi);
+ HVX_Vector *offsetslo = (HVX_Vector *)word_offsets;
+ HVX_Vector *offsetshi = (HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
+ HVX_Vector *valueslo = (HVX_Vector *)word_values_masked;
+ HVX_Vector *valueshi = (HVX_Vector *)&word_values_masked[MATRIX_SIZE / 2];
+ HVX_Vector *predslo = (HVX_Vector *)word_predicates;
+ HVX_Vector *predshi = (HVX_Vector *)&word_predicates[MATRIX_SIZE / 2];
+
+ asm ("r1 = #-1\n\t"
+ "v0 = vmem(%0 + #0)\n\t"
+ "q0 = vand(v0, r1)\n\t"
+ "m0 = %2\n\t"
+ "v0 = vmem(%3 + #0)\n\t"
+ "v1 = vmem(%4 + #0)\n\t"
+ "if (q0) vscatter(%1, m0, v0.w).w = v1\n\t"
+ : : "r"(predslo), "r"(vtcm.vscatter32), "r"(region_len),
+ "r"(offsetslo), "r"(valueslo)
+ : "r1", "q0", "m0", "q0", "v0", "v1", "memory");
+ asm ("r1 = #-1\n\t"
+ "v0 = vmem(%0 + #0)\n\t"
+ "q0 = vand(v0, r1)\n\t"
+ "m0 = %2\n\t"
+ "v0 = vmem(%3 + #0)\n\t"
+ "v1 = vmem(%4 + #0)\n\t"
+ "if (q0) vscatter(%1, m0, v0.w).w = v1\n\t"
+ : : "r"(predshi), "r"(vtcm.vscatter32), "r"(region_len),
+ "r"(offsetshi), "r"(valueshi)
+ : "r1", "q0", "m0", "q0", "v0", "v1", "memory");
- sync_scatter(vtcm.vscatter16);
+ sync_scatter(vtcm.vscatter32);
}
-/* scatter the 16 bit elements with 32 bit offsets using intrinsics */
+/* scatter the 16 bit elements with 32 bit offsets using HVX */
void vector_scatter_16_32(void)
{
- HVX_VectorPair offsets;
- HVX_Vector values;
-
- /* get the word offsets in a vector pair */
- offsets = *(HVX_VectorPair *)word_offsets;
-
- /* these values need to be shuffled for the scatter */
- values = *(HVX_Vector *)half_values;
- values = VSHUFF_H(values);
-
- VSCATTER_16_32(&vtcm.vscatter16_32, region_len, offsets, values);
+ asm ("m0 = %1\n\t"
+ "v0 = vmem(%2 + #0)\n\t"
+ "v1 = vmem(%2 + #1)\n\t"
+ "v2 = vmem(%3 + #0)\n\t"
+ "v2.h = vshuff(v2.h)\n\t" /* shuffle the values for the scatter */
+ "vscatter(%0, m0, v1:0.w).h = v2\n\t"
+ : : "r"(vtcm.vscatter16_32), "r"(region_len),
+ "r"(word_offsets), "r"(half_values)
+ : "m0", "v0", "v1", "v2", "memory");
sync_scatter(vtcm.vscatter16_32);
}
-/* scatter-acc the 16 bit elements with 32 bit offsets using intrinsics */
+/* scatter-accumulate the 16 bit elements with 32 bit offsets using HVX */
void vector_scatter_16_32_acc(void)
{
- HVX_VectorPair offsets;
- HVX_Vector values;
-
- /* get the word offsets in a vector pair */
- offsets = *(HVX_VectorPair *)word_offsets;
-
- /* these values need to be shuffled for the scatter */
- values = *(HVX_Vector *)half_values_acc;
- values = VSHUFF_H(values);
-
- VSCATTER_16_32_ACC(&vtcm.vscatter16_32, region_len, offsets, values);
+ asm ("m0 = %1\n\t"
+ "v0 = vmem(%2 + #0)\n\t"
+ "v1 = vmem(%2 + #1)\n\t"
+ "v2 = vmem(%3 + #0)\n\t" \
+ "v2.h = vshuff(v2.h)\n\t" /* shuffle the values for the scatter */
+ "vscatter(%0, m0, v1:0.w).h += v2\n\t"
+ : : "r"(vtcm.vscatter16_32), "r"(region_len),
+ "r"(word_offsets), "r"(half_values_acc)
+ : "m0", "v0", "v1", "v2", "memory");
sync_scatter(vtcm.vscatter16_32);
}
-/* masked scatter the 16 bit elements with 32 bit offsets using intrinsics */
+/* masked scatter the 16 bit elements with 32 bit offsets using HVX */
void vector_scatter_16_32_masked(void)
{
- HVX_VectorPair offsets;
- HVX_Vector values;
- HVX_Vector pred_reg;
-
- /* get the word offsets in a vector pair */
- offsets = *(HVX_VectorPair *)word_offsets;
-
- /* these values need to be shuffled for the scatter */
- values = *(HVX_Vector *)half_values_masked;
- values = VSHUFF_H(values);
-
- pred_reg = *(HVX_Vector *)half_predicates;
- pred_reg = VSHUFF_H(pred_reg);
- HVX_VectorPred preds = VAND_VAL(pred_reg, ~0);
-
- VSCATTER_16_32_MASKED(preds, &vtcm.vscatter16_32, region_len, offsets,
- values);
+ asm ("r1 = #-1\n\t"
+ "v0 = vmem(%0 + #0)\n\t"
+ "v0.h = vshuff(v0.h)\n\t" /* shuffle the predicates */
+ "q0 = vand(v0, r1)\n\t"
+ "m0 = %2\n\t"
+ "v0 = vmem(%3 + #0)\n\t"
+ "v1 = vmem(%3 + #1)\n\t"
+ "v2 = vmem(%4 + #0)\n\t" \
+ "v2.h = vshuff(v2.h)\n\t" /* shuffle the values for the scatter */
+ "if (q0) vscatter(%1, m0, v1:0.w).h = v2\n\t"
+ : : "r"(half_predicates), "r"(vtcm.vscatter16_32), "r"(region_len),
+ "r"(word_offsets), "r"(half_values_masked)
+ : "r1", "q0", "m0", "v0", "v1", "v2", "memory");
sync_scatter(vtcm.vscatter16_32);
}
-/* gather the elements from the scatter16 buffer */
+/* gather the elements from the scatter16 buffer using HVX */
void vector_gather_16(void)
{
- HVX_Vector *vgather = (HVX_Vector *)&vtcm.vgather16;
- HVX_Vector offsets = *(HVX_Vector *)half_offsets;
-
- VGATHER_16(vgather, &vtcm.vscatter16, region_len, offsets);
-
- sync_gather(vgather);
+ asm ("m0 = %1\n\t"
+ "v0 = vmem(%2 + #0)\n\t"
+ "{ vtmp.h = vgather(%0, m0, v0.h).h\n\t"
+ " vmem(%3 + #0) = vtmp.new }\n\t"
+ : : "r"(vtcm.vscatter16), "r"(region_len),
+ "r"(half_offsets), "r"(vtcm.vgather16)
+ : "m0", "v0", "memory");
+
+ sync_gather(vtcm.vgather16);
}
static unsigned short gather_16_masked_init(void)
@@ -427,31 +423,51 @@ static unsigned short gather_16_masked_init(void)
return letter | (letter << 8);
}
+/* masked gather the elements from the scatter16 buffer using HVX */
void vector_gather_16_masked(void)
{
- HVX_Vector *vgather = (HVX_Vector *)&vtcm.vgather16;
- HVX_Vector offsets = *(HVX_Vector *)half_offsets;
- HVX_Vector pred_reg = *(HVX_Vector *)half_predicates;
- HVX_VectorPred preds = VAND_VAL(pred_reg, ~0);
-
- *vgather = VSPLAT_H(gather_16_masked_init());
- VGATHER_16_MASKED(vgather, preds, &vtcm.vscatter16, region_len, offsets);
-
- sync_gather(vgather);
+ unsigned short init = gather_16_masked_init();
+
+ asm ("v0.h = vsplat(%5)\n\t"
+ "vmem(%4 + #0) = v0\n\t" /* initialize the write area */
+ "r1 = #-1\n\t"
+ "v0 = vmem(%0 + #0)\n\t"
+ "q0 = vand(v0, r1)\n\t"
+ "m0 = %2\n\t"
+ "v0 = vmem(%3 + #0)\n\t"
+ "{ if (q0) vtmp.h = vgather(%1, m0, v0.h).h\n\t"
+ " vmem(%4 + #0) = vtmp.new }\n\t"
+ : : "r"(half_predicates), "r"(vtcm.vscatter16), "r"(region_len),
+ "r"(half_offsets), "r"(vtcm.vgather16), "r"(init)
+ : "r1", "q0", "m0", "v0", "memory");
+
+ sync_gather(vtcm.vgather16);
}
-/* gather the elements from the scatter32 buffer */
+/* gather the elements from the scatter32 buffer using HVX */
void vector_gather_32(void)
{
- HVX_Vector *vgatherlo = (HVX_Vector *)&vtcm.vgather32;
- HVX_Vector *vgatherhi =
- (HVX_Vector *)((int)&vtcm.vgather32 + (MATRIX_SIZE * 2));
- HVX_Vector offsetslo = *(HVX_Vector *)word_offsets;
- HVX_Vector offsetshi = *(HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
-
- VGATHER_32(vgatherlo, &vtcm.vscatter32, region_len, offsetslo);
- VGATHER_32(vgatherhi, &vtcm.vscatter32, region_len, offsetshi);
+ HVX_Vector *vgatherlo = (HVX_Vector *)vtcm.vgather32;
+ HVX_Vector *vgatherhi = (HVX_Vector *)&vtcm.vgather32[MATRIX_SIZE / 2];
+ HVX_Vector *offsetslo = (HVX_Vector *)word_offsets;
+ HVX_Vector *offsetshi = (HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
+
+ asm ("m0 = %1\n\t"
+ "v0 = vmem(%2 + #0)\n\t"
+ "{ vtmp.w = vgather(%0, m0, v0.w).w\n\t"
+ " vmem(%3 + #0) = vtmp.new }\n\t"
+ : : "r"(vtcm.vscatter32), "r"(region_len),
+ "r"(offsetslo), "r"(vgatherlo)
+ : "m0", "v0", "memory");
+ asm ("m0 = %1\n\t"
+ "v0 = vmem(%2 + #0)\n\t"
+ "{ vtmp.w = vgather(%0, m0, v0.w).w\n\t"
+ " vmem(%3 + #0) = vtmp.new }\n\t"
+ : : "r"(vtcm.vscatter32), "r"(region_len),
+ "r"(offsetshi), "r"(vgatherhi)
+ : "m0", "v0", "memory");
+ sync_gather(vgatherlo);
sync_gather(vgatherhi);
}
@@ -461,79 +477,88 @@ static unsigned int gather_32_masked_init(void)
return letter | (letter << 8) | (letter << 16) | (letter << 24);
}
+/* masked gather the elements from the scatter32 buffer using HVX */
void vector_gather_32_masked(void)
{
- HVX_Vector *vgatherlo = (HVX_Vector *)&vtcm.vgather32;
- HVX_Vector *vgatherhi =
- (HVX_Vector *)((int)&vtcm.vgather32 + (MATRIX_SIZE * 2));
- HVX_Vector offsetslo = *(HVX_Vector *)word_offsets;
- HVX_Vector offsetshi = *(HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
- HVX_Vector pred_reglo = *(HVX_Vector *)word_predicates;
- HVX_VectorPred predslo = VAND_VAL(pred_reglo, ~0);
- HVX_Vector pred_reghi = *(HVX_Vector *)&word_predicates[MATRIX_SIZE / 2];
- HVX_VectorPred predshi = VAND_VAL(pred_reghi, ~0);
-
- *vgatherlo = VSPLAT_H(gather_32_masked_init());
- *vgatherhi = VSPLAT_H(gather_32_masked_init());
- VGATHER_32_MASKED(vgatherlo, predslo, &vtcm.vscatter32, region_len,
- offsetslo);
- VGATHER_32_MASKED(vgatherhi, predshi, &vtcm.vscatter32, region_len,
- offsetshi);
+ unsigned int init = gather_32_masked_init();
+ HVX_Vector *vgatherlo = (HVX_Vector *)vtcm.vgather32;
+ HVX_Vector *vgatherhi = (HVX_Vector *)&vtcm.vgather32[MATRIX_SIZE / 2];
+ HVX_Vector *offsetslo = (HVX_Vector *)word_offsets;
+ HVX_Vector *offsetshi = (HVX_Vector *)&word_offsets[MATRIX_SIZE / 2];
+ HVX_Vector *predslo = (HVX_Vector *)word_predicates;
+ HVX_Vector *predshi = (HVX_Vector *)&word_predicates[MATRIX_SIZE / 2];
+
+ asm ("v0.h = vsplat(%5)\n\t"
+ "vmem(%4 + #0) = v0\n\t" /* initialize the write area */
+ "r1 = #-1\n\t"
+ "v0 = vmem(%0 + #0)\n\t"
+ "q0 = vand(v0, r1)\n\t"
+ "m0 = %2\n\t"
+ "v0 = vmem(%3 + #0)\n\t"
+ "{ if (q0) vtmp.w = vgather(%1, m0, v0.w).w\n\t"
+ " vmem(%4 + #0) = vtmp.new }\n\t"
+ : : "r"(predslo), "r"(vtcm.vscatter32), "r"(region_len),
+ "r"(offsetslo), "r"(vgatherlo), "r"(init)
+ : "r1", "q0", "m0", "v0", "memory");
+ asm ("v0.h = vsplat(%5)\n\t"
+ "vmem(%4 + #0) = v0\n\t" /* initialize the write area */
+ "r1 = #-1\n\t"
+ "v0 = vmem(%0 + #0)\n\t"
+ "q0 = vand(v0, r1)\n\t"
+ "m0 = %2\n\t"
+ "v0 = vmem(%3 + #0)\n\t"
+ "{ if (q0) vtmp.w = vgather(%1, m0, v0.w).w\n\t"
+ " vmem(%4 + #0) = vtmp.new }\n\t"
+ : : "r"(predshi), "r"(vtcm.vscatter32), "r"(region_len),
+ "r"(offsetshi), "r"(vgatherhi), "r"(init)
+ : "r1", "q0", "m0", "v0", "memory");
sync_gather(vgatherlo);
sync_gather(vgatherhi);
}
-/* gather the elements from the scatter16_32 buffer */
+/* gather the elements from the scatter16_32 buffer using HVX */
void vector_gather_16_32(void)
{
- HVX_Vector *vgather;
- HVX_VectorPair offsets;
- HVX_Vector values;
-
- /* get the vtcm address to gather from */
- vgather = (HVX_Vector *)&vtcm.vgather16_32;
-
- /* get the word offsets in a vector pair */
- offsets = *(HVX_VectorPair *)word_offsets;
-
- VGATHER_16_32(vgather, &vtcm.vscatter16_32, region_len, offsets);
-
- /* deal the elements to get the order back */
- values = *(HVX_Vector *)vgather;
- values = VDEAL_H(values);
-
- /* write it back to vtcm address */
- *(HVX_Vector *)vgather = values;
+ asm ("m0 = %1\n\t"
+ "v0 = vmem(%2 + #0)\n\t"
+ "v1 = vmem(%2 + #1)\n\t"
+ "{ vtmp.h = vgather(%0, m0, v1:0.w).h\n\t"
+ " vmem(%3 + #0) = vtmp.new }\n\t"
+ "v0 = vmem(%3 + #0)\n\t"
+ "v0.h = vdeal(v0.h)\n\t" /* deal the elements to get the order back */
+ "vmem(%3 + #0) = v0\n\t"
+ : : "r"(vtcm.vscatter16_32), "r"(region_len),
+ "r"(word_offsets), "r"(vtcm.vgather16_32)
+ : "m0", "v0", "v1", "memory");
+
+ sync_gather(vtcm.vgather16_32);
}
+/* masked gather the elements from the scatter16_32 buffer using HVX */
void vector_gather_16_32_masked(void)
{
- HVX_Vector *vgather;
- HVX_VectorPair offsets;
- HVX_Vector pred_reg;
- HVX_VectorPred preds;
- HVX_Vector values;
-
- /* get the vtcm address to gather from */
- vgather = (HVX_Vector *)&vtcm.vgather16_32;
-
- /* get the word offsets in a vector pair */
- offsets = *(HVX_VectorPair *)word_offsets;
- pred_reg = *(HVX_Vector *)half_predicates;
- pred_reg = VSHUFF_H(pred_reg);
- preds = VAND_VAL(pred_reg, ~0);
-
- *vgather = VSPLAT_H(gather_16_masked_init());
- VGATHER_16_32_MASKED(vgather, preds, &vtcm.vscatter16_32, region_len,
- offsets);
-
- /* deal the elements to get the order back */
- values = *(HVX_Vector *)vgather;
- values = VDEAL_H(values);
-
- /* write it back to vtcm address */
- *(HVX_Vector *)vgather = values;
+ unsigned short init = gather_16_masked_init();
+
+ asm ("v0.h = vsplat(%5)\n\t"
+ "vmem(%4 + #0) = v0\n\t" /* initialize the write area */
+ "r1 = #-1\n\t"
+ "v0 = vmem(%0 + #0)\n\t"
+ "v0.h = vshuff(v0.h)\n\t" /* shuffle the predicates */
+ "q0 = vand(v0, r1)\n\t"
+ "m0 = %2\n\t"
+ "v0 = vmem(%3 + #0)\n\t"
+ "v1 = vmem(%3 + #1)\n\t"
+ "{ if (q0) vtmp.h = vgather(%1, m0, v1:0.w).h\n\t"
+ " vmem(%4 + #0) = vtmp.new }\n\t"
+ "v0 = vmem(%4 + #0)\n\t"
+ "v0.h = vdeal(v0.h)\n\t" /* deal the elements to get the order back */
+ "vmem(%4 + #0) = v0\n\t"
+ : : "r"(half_predicates), "r"(vtcm.vscatter16_32), "r"(region_len),
+ "r"(word_offsets), "r"(vtcm.vgather16_32), "r"(init)
+ : "r1", "q0", "m0", "v0", "v1", "memory");
+
+ sync_gather(vtcm.vgather16_32);
}
static void check_buffer(const char *name, void *c, void *r, size_t size)
@@ -579,6 +604,7 @@ void scalar_scatter_16_acc(unsigned short *vscatter16)
}
}
+/* scatter-accumulate the 16 bit elements using C */
void check_scatter_16_acc()
{
memset(vscatter16_ref, FILL_CHAR,
@@ -589,7 +615,7 @@ void check_scatter_16_acc()
SCATTER_BUFFER_SIZE * sizeof(unsigned short));
}
-/* scatter the 16 bit elements using C */
+/* masked scatter the 16 bit elements using C */
void scalar_scatter_16_masked(unsigned short *vscatter16)
{
for (int i = 0; i < MATRIX_SIZE; i++) {
@@ -628,7 +654,7 @@ void check_scatter_32()
SCATTER_BUFFER_SIZE * sizeof(unsigned int));
}
-/* scatter the 32 bit elements using C */
+/* scatter-accumulate the 32 bit elements using C */
void scalar_scatter_32_acc(unsigned int *vscatter32)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
@@ -646,7 +672,7 @@ void check_scatter_32_acc()
SCATTER_BUFFER_SIZE * sizeof(unsigned int));
}
-/* scatter the 32 bit elements using C */
+/* masked scatter the 32 bit elements using C */
void scalar_scatter_32_masked(unsigned int *vscatter32)
{
for (int i = 0; i < MATRIX_SIZE; i++) {
@@ -667,7 +693,7 @@ void check_scatter_32_masked()
SCATTER_BUFFER_SIZE * sizeof(unsigned int));
}
-/* scatter the 32 bit elements using C */
+/* scatter the 16 bit elements with 32 bit offsets using C */
void scalar_scatter_16_32(unsigned short *vscatter16_32)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
@@ -684,7 +710,7 @@ void check_scatter_16_32()
SCATTER_BUFFER_SIZE * sizeof(unsigned short));
}
-/* scatter the 32 bit elements using C */
+/* scatter-accumulate the 16 bit elements with 32 bit offsets using C */
void scalar_scatter_16_32_acc(unsigned short *vscatter16_32)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
@@ -702,6 +728,7 @@ void check_scatter_16_32_acc()
SCATTER_BUFFER_SIZE * sizeof(unsigned short));
}
+/* masked scatter the 16 bit elements with 32 bit offsets using C */
void scalar_scatter_16_32_masked(unsigned short *vscatter16_32)
{
for (int i = 0; i < MATRIX_SIZE; i++) {
@@ -738,6 +765,7 @@ void check_gather_16()
MATRIX_SIZE * sizeof(unsigned short));
}
+/* masked gather the elements from the scatter buffer using C */
void scalar_gather_16_masked(unsigned short *vgather16)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
@@ -756,7 +784,7 @@ void check_gather_16_masked()
MATRIX_SIZE * sizeof(unsigned short));
}
-/* gather the elements from the scatter buffer using C */
+/* gather the elements from the scatter32 buffer using C */
void scalar_gather_32(unsigned int *vgather32)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
@@ -772,6 +800,7 @@ void check_gather_32(void)
MATRIX_SIZE * sizeof(unsigned int));
}
+/* masked gather the elements from the scatter32 buffer using C */
void scalar_gather_32_masked(unsigned int *vgather32)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
@@ -781,7 +810,6 @@ void scalar_gather_32_masked(unsigned int *vgather32)
}
}
-
void check_gather_32_masked(void)
{
memset(vgather32_ref, gather_32_masked_init(),
@@ -791,7 +819,7 @@ void check_gather_32_masked(void)
vgather32_ref, MATRIX_SIZE * sizeof(unsigned int));
}
-/* gather the elements from the scatter buffer using C */
+/* gather the elements from the scatter16_32 buffer using C */
void scalar_gather_16_32(unsigned short *vgather16_32)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
@@ -807,6 +835,7 @@ void check_gather_16_32(void)
MATRIX_SIZE * sizeof(unsigned short));
}
+/* masked gather the elements from the scatter16_32 buffer using C */
void scalar_gather_16_32_masked(unsigned short *vgather16_32)
{
for (int i = 0; i < MATRIX_SIZE; ++i) {
--
2.17.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH v5 10/14] Hexagon (tests/tcg/hexagon) Enable HVX tests
2023-01-31 22:56 [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
` (8 preceding siblings ...)
2023-01-31 22:56 ` [PATCH v5 09/14] Hexagon (tests/tcg/hexagon) Remove __builtin from scatter_gather Taylor Simpson
@ 2023-01-31 22:56 ` Taylor Simpson
2023-02-08 12:54 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 11/14] Hexagon (target/hexagon) Change subtract from zero to change sign Taylor Simpson
` (3 subsequent siblings)
13 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-01-31 22:56 UTC (permalink / raw)
To: qemu-devel
Cc: tsimpson, richard.henderson, philmd, ale, anjo, bcain, quic_mathbern
Made possible by new toolchain container
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
tests/tcg/hexagon/Makefile.target | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/tests/tcg/hexagon/Makefile.target b/tests/tcg/hexagon/Makefile.target
index 18e6a5969e..f753b39d91 100644
--- a/tests/tcg/hexagon/Makefile.target
+++ b/tests/tcg/hexagon/Makefile.target
@@ -1,5 +1,5 @@
##
-## Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved.
+## Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
@@ -45,6 +45,10 @@ HEX_TESTS += fpstuff
HEX_TESTS += overflow
HEX_TESTS += signal_context
HEX_TESTS += reg_mut
+HEX_TESTS += vector_add_int
+HEX_TESTS += scatter_gather
+HEX_TESTS += hvx_misc
+HEX_TESTS += hvx_histogram
HEX_TESTS += test_abs
HEX_TESTS += test_bitcnt
@@ -78,3 +82,10 @@ TESTS += $(HEX_TESTS)
usr: usr.c
$(CC) $(CFLAGS) -mv67t -O2 -Wno-inline-asm -Wno-expansion-to-defined $< -o $@ $(LDFLAGS)
+scatter_gather: CFLAGS += -mhvx
+vector_add_int: CFLAGS += -mhvx -fvectorize
+hvx_misc: CFLAGS += -mhvx
+hvx_histogram: CFLAGS += -mhvx -Wno-gnu-folding-constant
+
+hvx_histogram: hvx_histogram.c hvx_histogram_row.S
+ $(CC) $(CFLAGS) $(CROSS_CC_GUEST_CFLAGS) $^ -o $@
--
2.17.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH v5 11/14] Hexagon (target/hexagon) Change subtract from zero to change sign
2023-01-31 22:56 [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
` (9 preceding siblings ...)
2023-01-31 22:56 ` [PATCH v5 10/14] Hexagon (tests/tcg/hexagon) Enable HVX tests Taylor Simpson
@ 2023-01-31 22:56 ` Taylor Simpson
2023-02-16 13:45 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 12/14] Hexagon (target/hexagon) Remove gen_log_predicated_reg_write[_pair] Taylor Simpson
` (2 subsequent siblings)
13 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-01-31 22:56 UTC (permalink / raw)
To: qemu-devel
Cc: tsimpson, richard.henderson, philmd, ale, anjo, bcain, quic_mathbern
The F2_sffms instruction [r0 -= sfmpy(r1, r2)] doesn't properly
handle -0. Previously we would negate the input operand by subtracting
from zero. Instead, we negate by changing the sign bit.
Test case added to tests/tcg/hexagon/fpstuff.c
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
target/hexagon/op_helper.c | 2 +-
tests/tcg/hexagon/fpstuff.c | 31 ++++++++++++++++++++++++++++++-
2 files changed, 31 insertions(+), 2 deletions(-)
diff --git a/target/hexagon/op_helper.c b/target/hexagon/op_helper.c
index 38b8aee193..9425941c69 100644
--- a/target/hexagon/op_helper.c
+++ b/target/hexagon/op_helper.c
@@ -1169,7 +1169,7 @@ float32 HELPER(sffms)(CPUHexagonState *env, float32 RxV,
{
float32 neg_RsV;
arch_fpop_start(env);
- neg_RsV = float32_sub(float32_zero, RsV, &env->fp_status);
+ neg_RsV = float32_set_sign(RsV, float32_is_neg(RsV) ? 0 : 1);
RxV = internal_fmafx(neg_RsV, RtV, RxV, 0, &env->fp_status);
arch_fpop_end(env);
return RxV;
diff --git a/tests/tcg/hexagon/fpstuff.c b/tests/tcg/hexagon/fpstuff.c
index 56bf562a40..90ce9a6ef3 100644
--- a/tests/tcg/hexagon/fpstuff.c
+++ b/tests/tcg/hexagon/fpstuff.c
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2020-2022 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ * Copyright(c) 2020-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -40,6 +40,7 @@ const int SF_HEX_NAN = 0xffffffff;
const int SF_small_neg = 0xab98fba8;
const int SF_denorm = 0x00000001;
const int SF_random = 0x346001d6;
+const int SF_neg_zero = 0x80000000;
const long long DF_QNaN = 0x7ff8000000000000ULL;
const long long DF_SNaN = 0x7ff7000000000000ULL;
@@ -536,6 +537,33 @@ static void check_sffixupd(void)
check32(result, 0x146001d6);
}
+static void check_sffms(void)
+{
+ int result;
+
+ /* Check that sffms properly deals with -0 */
+ result = SF_neg_zero;
+ asm ("%0 -= sfmpy(%1 , %2)\n\t"
+ : "+r"(result)
+ : "r"(SF_ZERO), "r"(SF_ZERO)
+ : "r12", "r8");
+ check32(result, SF_neg_zero);
+
+ result = SF_ZERO;
+ asm ("%0 -= sfmpy(%1 , %2)\n\t"
+ : "+r"(result)
+ : "r"(SF_neg_zero), "r"(SF_ZERO)
+ : "r12", "r8");
+ check32(result, SF_ZERO);
+
+ result = SF_ZERO;
+ asm ("%0 -= sfmpy(%1 , %2)\n\t"
+ : "+r"(result)
+ : "r"(SF_ZERO), "r"(SF_neg_zero)
+ : "r12", "r8");
+ check32(result, SF_ZERO);
+}
+
static void check_float2int_convs()
{
int res32;
@@ -688,6 +716,7 @@ int main()
check_invsqrta();
check_sffixupn();
check_sffixupd();
+ check_sffms();
check_float2int_convs();
puts(err ? "FAIL" : "PASS");
--
2.17.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH v5 12/14] Hexagon (target/hexagon) Remove gen_log_predicated_reg_write[_pair]
2023-01-31 22:56 [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
` (10 preceding siblings ...)
2023-01-31 22:56 ` [PATCH v5 11/14] Hexagon (target/hexagon) Change subtract from zero to change sign Taylor Simpson
@ 2023-01-31 22:56 ` Taylor Simpson
2023-02-24 13:05 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 13/14] Hexagon (target/hexagon) Reduce manipulation of slot_cancelled Taylor Simpson
2023-01-31 22:56 ` [PATCH v5 14/14] Hexagon (target/hexagon) Improve code gen for predicated HVX instructions Taylor Simpson
13 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-01-31 22:56 UTC (permalink / raw)
To: qemu-devel
Cc: tsimpson, richard.henderson, philmd, ale, anjo, bcain, quic_mathbern
We assign the instruction destination register to hex_new_value[num]
instead of a TCG temp that gets copied back to hex_new_value[num].
Since we preload hex_new_value for predicated instructions, we don't
need the check for slot_cancelled. So, we call gen_log_reg_write instead.
We update the helper function generation and gen_tcg.h to maintain the
disable-hexagon-idef-parser configuration.
Here is a simple example of the differences in the TCG code generated:
IN:
0x00400094: 0xf900c102 { if (P0) R2 = and(R0,R1) }
BEFORE
---- 00400094
mov_i32 slot_cancelled,$0x0
mov_i32 new_r2,r2
mov_i32 loc2,$0x0
and_i32 tmp0,p0,$0x1
brcond_i32 tmp0,$0x0,eq,$L1
and_i32 tmp0,r0,r1
mov_i32 loc2,tmp0
br $L2
set_label $L1
or_i32 slot_cancelled,slot_cancelled,$0x8
set_label $L2
and_i32 tmp0,slot_cancelled,$0x8
movcond_i32 new_r2,tmp0,$0x0,loc2,new_r2,eq
mov_i32 r2,new_r2
AFTER
---- 00400094
mov_i32 slot_cancelled,$0x0
mov_i32 new_r2,r2
and_i32 tmp0,p0,$0x1
brcond_i32 tmp0,$0x0,eq,$L1
and_i32 tmp0,r0,r1
mov_i32 new_r2,tmp0
br $L2
set_label $L1
or_i32 slot_cancelled,slot_cancelled,$0x8
set_label $L2
mov_i32 r2,new_r2
We'll remove the unnecessary manipulation of slot_cancelled in a
subsequent patch.
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
target/hexagon/gen_tcg.h | 7 +-
target/hexagon/macros.h | 17 ---
target/hexagon/genptr.c | 120 ++++----------------
target/hexagon/idef-parser/parser-helpers.c | 4 +-
target/hexagon/gen_helper_funcs.py | 19 +++-
target/hexagon/gen_helper_protos.py | 12 +-
target/hexagon/gen_tcg_funcs.py | 90 ++++++++-------
target/hexagon/hex_common.py | 9 +-
8 files changed, 110 insertions(+), 168 deletions(-)
diff --git a/target/hexagon/gen_tcg.h b/target/hexagon/gen_tcg.h
index 8282ff3fc5..5f2ffaf780 100644
--- a/target/hexagon/gen_tcg.h
+++ b/target/hexagon/gen_tcg.h
@@ -342,8 +342,6 @@
tcg_gen_movi_tl(EA, 0); \
PRED; \
CHECK_NOSHUF_PRED(GET_EA, SIZE, LSB); \
- PRED_LOAD_CANCEL(LSB, EA); \
- tcg_gen_movi_tl(RdV, 0); \
tcg_gen_brcondi_tl(TCG_COND_EQ, LSB, 0, label); \
fLOAD(1, SIZE, SIGN, EA, RdV); \
gen_set_label(label); \
@@ -402,8 +400,6 @@
tcg_gen_movi_tl(EA, 0); \
PRED; \
CHECK_NOSHUF_PRED(GET_EA, 8, LSB); \
- PRED_LOAD_CANCEL(LSB, EA); \
- tcg_gen_movi_i64(RddV, 0); \
tcg_gen_brcondi_tl(TCG_COND_EQ, LSB, 0, label); \
fLOAD(1, 8, u, EA, RddV); \
gen_set_label(label); \
@@ -521,10 +517,9 @@
*/
#define fGEN_TCG_SL2_return(SHORTCODE) \
do { \
- TCGv_i64 RddV = tcg_temp_new_i64(); \
+ TCGv_i64 RddV = get_result_gpr_pair(ctx, HEX_REG_FP); \
gen_return(ctx, RddV, hex_gpr[HEX_REG_FP]); \
gen_log_reg_write_pair(HEX_REG_FP, RddV); \
- tcg_temp_free_i64(RddV); \
} while (0)
/*
diff --git a/target/hexagon/macros.h b/target/hexagon/macros.h
index 8f1f82f8da..f5ff923bbd 100644
--- a/target/hexagon/macros.h
+++ b/target/hexagon/macros.h
@@ -210,23 +210,6 @@ static inline void gen_cancel(uint32_t slot)
#define LOAD_CANCEL(EA) do { CANCEL; } while (0)
-#ifdef QEMU_GENERATE
-static inline void gen_pred_cancel(TCGv pred, uint32_t slot_num)
- {
- TCGv slot_mask = tcg_temp_new();
- TCGv tmp = tcg_temp_new();
- TCGv zero = tcg_constant_tl(0);
- tcg_gen_ori_tl(slot_mask, hex_slot_cancelled, 1 << slot_num);
- tcg_gen_andi_tl(tmp, pred, 1);
- tcg_gen_movcond_tl(TCG_COND_EQ, hex_slot_cancelled, tmp, zero,
- slot_mask, hex_slot_cancelled);
- tcg_temp_free(slot_mask);
- tcg_temp_free(tmp);
-}
-#define PRED_LOAD_CANCEL(PRED, EA) \
- gen_pred_cancel(PRED, insn->is_endloop ? 4 : insn->slot)
-#endif
-
#define STORE_CANCEL(EA) { env->slot_cancelled |= (1 << slot); }
#define fMAX(A, B) (((A) > (B)) ? (A) : (B))
diff --git a/target/hexagon/genptr.c b/target/hexagon/genptr.c
index 67ec3ac551..f937a17b24 100644
--- a/target/hexagon/genptr.c
+++ b/target/hexagon/genptr.c
@@ -70,28 +70,17 @@ static inline void gen_masked_reg_write(TCGv new_val, TCGv cur_val,
}
}
-static inline void gen_log_predicated_reg_write(int rnum, TCGv val,
- uint32_t slot)
+static TCGv get_result_gpr(DisasContext *ctx, int rnum)
{
- TCGv zero = tcg_constant_tl(0);
- TCGv slot_mask = tcg_temp_new();
-
- tcg_gen_andi_tl(slot_mask, hex_slot_cancelled, 1 << slot);
- tcg_gen_movcond_tl(TCG_COND_EQ, hex_new_value[rnum], slot_mask, zero,
- val, hex_new_value[rnum]);
- if (HEX_DEBUG) {
- /*
- * Do this so HELPER(debug_commit_end) will know
- *
- * Note that slot_mask indicates the value is not written
- * (i.e., slot was cancelled), so we create a true/false value before
- * or'ing with hex_reg_written[rnum].
- */
- tcg_gen_setcond_tl(TCG_COND_EQ, slot_mask, slot_mask, zero);
- tcg_gen_or_tl(hex_reg_written[rnum], hex_reg_written[rnum], slot_mask);
- }
+ return hex_new_value[rnum];
+}
- tcg_temp_free(slot_mask);
+static TCGv_i64 get_result_gpr_pair(DisasContext *ctx, int rnum)
+{
+ TCGv_i64 result = tcg_temp_local_new_i64();
+ tcg_gen_concat_i32_i64(result, hex_new_value[rnum],
+ hex_new_value[rnum + 1]);
+ return result;
}
void gen_log_reg_write(int rnum, TCGv val)
@@ -106,42 +95,6 @@ void gen_log_reg_write(int rnum, TCGv val)
}
}
-static void gen_log_predicated_reg_write_pair(int rnum, TCGv_i64 val,
- uint32_t slot)
-{
- TCGv val32 = tcg_temp_new();
- TCGv zero = tcg_constant_tl(0);
- TCGv slot_mask = tcg_temp_new();
-
- tcg_gen_andi_tl(slot_mask, hex_slot_cancelled, 1 << slot);
- /* Low word */
- tcg_gen_extrl_i64_i32(val32, val);
- tcg_gen_movcond_tl(TCG_COND_EQ, hex_new_value[rnum],
- slot_mask, zero,
- val32, hex_new_value[rnum]);
- /* High word */
- tcg_gen_extrh_i64_i32(val32, val);
- tcg_gen_movcond_tl(TCG_COND_EQ, hex_new_value[rnum + 1],
- slot_mask, zero,
- val32, hex_new_value[rnum + 1]);
- if (HEX_DEBUG) {
- /*
- * Do this so HELPER(debug_commit_end) will know
- *
- * Note that slot_mask indicates the value is not written
- * (i.e., slot was cancelled), so we create a true/false value before
- * or'ing with hex_reg_written[rnum].
- */
- tcg_gen_setcond_tl(TCG_COND_EQ, slot_mask, slot_mask, zero);
- tcg_gen_or_tl(hex_reg_written[rnum], hex_reg_written[rnum], slot_mask);
- tcg_gen_or_tl(hex_reg_written[rnum + 1], hex_reg_written[rnum + 1],
- slot_mask);
- }
-
- tcg_temp_free(val32);
- tcg_temp_free(slot_mask);
-}
-
static void gen_log_reg_write_pair(int rnum, TCGv_i64 val)
{
const target_ulong reg_mask_low = reg_immut_masks[rnum];
@@ -167,6 +120,7 @@ static void gen_log_reg_write_pair(int rnum, TCGv_i64 val)
}
tcg_temp_free(val32);
+ tcg_temp_free_i64(val);
}
void gen_log_pred_write(DisasContext *ctx, int pnum, TCGv val)
@@ -306,12 +260,14 @@ static inline void gen_write_ctrl_reg_pair(DisasContext *ctx, int reg_num,
TCGv_i64 val)
{
if (reg_num == HEX_REG_P3_0_ALIASED) {
+ TCGv result = get_result_gpr(ctx, reg_num + 1);
TCGv val32 = tcg_temp_new();
tcg_gen_extrl_i64_i32(val32, val);
gen_write_p3_0(ctx, val32);
tcg_gen_extrh_i64_i32(val32, val);
- gen_log_reg_write(reg_num + 1, val32);
+ tcg_gen_mov_tl(result, val32);
tcg_temp_free(val32);
+ tcg_temp_free_i64(val);
} else {
gen_log_reg_write_pair(reg_num, val);
if (reg_num == HEX_REG_QEMU_PKT_CNT) {
@@ -701,33 +657,29 @@ static void gen_jumpr(DisasContext *ctx, TCGv new_pc)
static void gen_call(DisasContext *ctx, int pc_off)
{
- TCGv next_PC =
- tcg_constant_tl(ctx->pkt->pc + ctx->pkt->encod_pkt_size_in_bytes);
- gen_log_reg_write(HEX_REG_LR, next_PC);
+ TCGv lr = get_result_gpr(ctx, HEX_REG_LR);
+ tcg_gen_movi_tl(lr, ctx->next_PC);
gen_write_new_pc_pcrel(ctx, pc_off, TCG_COND_ALWAYS, NULL);
}
static void gen_callr(DisasContext *ctx, TCGv new_pc)
{
- TCGv next_PC =
- tcg_constant_tl(ctx->pkt->pc + ctx->pkt->encod_pkt_size_in_bytes);
- gen_log_reg_write(HEX_REG_LR, next_PC);
+ TCGv lr = get_result_gpr(ctx, HEX_REG_LR);
+ tcg_gen_movi_tl(lr, ctx->next_PC);
gen_write_new_pc_addr(ctx, new_pc, TCG_COND_ALWAYS, NULL);
}
static void gen_cond_call(DisasContext *ctx, TCGv pred,
TCGCond cond, int pc_off)
{
- TCGv next_PC;
+ TCGv lr = get_result_gpr(ctx, HEX_REG_LR);
TCGv lsb = tcg_temp_local_new();
TCGLabel *skip = gen_new_label();
tcg_gen_andi_tl(lsb, pred, 1);
gen_write_new_pc_pcrel(ctx, pc_off, cond, lsb);
tcg_gen_brcondi_tl(cond, lsb, 0, skip);
tcg_temp_free(lsb);
- next_PC =
- tcg_constant_tl(ctx->pkt->pc + ctx->pkt->encod_pkt_size_in_bytes);
- gen_log_reg_write(HEX_REG_LR, next_PC);
+ tcg_gen_movi_tl(lr, ctx->next_PC);
gen_set_label(skip);
}
@@ -760,8 +712,7 @@ static void gen_load_frame(DisasContext *ctx, TCGv_i64 frame, TCGv EA)
tcg_gen_qemu_ld64(frame, EA, ctx->mem_idx);
}
-static void gen_return_base(DisasContext *ctx, TCGv_i64 dst, TCGv src,
- TCGv r29)
+static void gen_return(DisasContext *ctx, TCGv_i64 dst, TCGv src)
{
/*
* frame = *src
@@ -771,6 +722,7 @@ static void gen_return_base(DisasContext *ctx, TCGv_i64 dst, TCGv src,
*/
TCGv_i64 frame = tcg_temp_new_i64();
TCGv r31 = tcg_temp_new();
+ TCGv r29 = get_result_gpr(ctx, HEX_REG_SP);
gen_load_frame(ctx, frame, src);
gen_frame_unscramble(frame);
@@ -783,50 +735,26 @@ static void gen_return_base(DisasContext *ctx, TCGv_i64 dst, TCGv src,
tcg_temp_free(r31);
}
-static void gen_return(DisasContext *ctx, TCGv_i64 dst, TCGv src)
-{
- TCGv r29 = tcg_temp_new();
- gen_return_base(ctx, dst, src, r29);
- gen_log_reg_write(HEX_REG_SP, r29);
- tcg_temp_free(r29);
-}
-
/* if (pred) dst = dealloc_return(src):raw */
static void gen_cond_return(DisasContext *ctx, TCGv_i64 dst, TCGv src,
TCGv pred, TCGCond cond)
{
TCGv LSB = tcg_temp_new();
- TCGv mask = tcg_temp_new();
- TCGv r29 = tcg_temp_local_new();
TCGLabel *skip = gen_new_label();
tcg_gen_andi_tl(LSB, pred, 1);
- /* Initialize the results in case the predicate is false */
- tcg_gen_movi_i64(dst, 0);
- tcg_gen_movi_tl(r29, 0);
-
- /* Set the bit in hex_slot_cancelled if the predicate is flase */
- tcg_gen_movi_tl(mask, 1 << ctx->insn->slot);
- tcg_gen_or_tl(mask, hex_slot_cancelled, mask);
- tcg_gen_movcond_tl(cond, hex_slot_cancelled, LSB, tcg_constant_tl(0),
- mask, hex_slot_cancelled);
- tcg_temp_free(mask);
-
tcg_gen_brcondi_tl(cond, LSB, 0, skip);
tcg_temp_free(LSB);
- gen_return_base(ctx, dst, src, r29);
+ gen_return(ctx, dst, src);
gen_set_label(skip);
- gen_log_predicated_reg_write(HEX_REG_SP, r29, ctx->insn->slot);
- tcg_temp_free(r29);
}
/* sub-instruction version (no RddV, so handle it manually) */
static void gen_cond_return_subinsn(DisasContext *ctx, TCGCond cond, TCGv pred)
{
- TCGv_i64 RddV = tcg_temp_local_new_i64();
+ TCGv_i64 RddV = get_result_gpr_pair(ctx, HEX_REG_FP);
gen_cond_return(ctx, RddV, hex_gpr[HEX_REG_FP], pred, cond);
- gen_log_predicated_reg_write_pair(HEX_REG_FP, RddV, ctx->insn->slot);
- tcg_temp_free_i64(RddV);
+ gen_log_reg_write_pair(HEX_REG_FP, RddV);
}
static void gen_endloop0(DisasContext *ctx)
diff --git a/target/hexagon/idef-parser/parser-helpers.c b/target/hexagon/idef-parser/parser-helpers.c
index de9838806b..eb652d6a7a 100644
--- a/target/hexagon/idef-parser/parser-helpers.c
+++ b/target/hexagon/idef-parser/parser-helpers.c
@@ -1836,9 +1836,7 @@ void gen_inst_init_args(Context *c, YYLTYPE *locp)
for (unsigned i = 0; i < c->inst.init_list->len; i++) {
HexValue *val = &g_array_index(c->inst.init_list, HexValue, i);
if (val->type == REGISTER_ARG) {
- char reg_id[5];
- reg_compose(c, locp, &val->reg, reg_id);
- EMIT_HEAD(c, "tcg_gen_movi_i%u(%s, 0);\n", val->bit_width, reg_id);
+ /* Nothing to do here */
} else if (val->type == PREDICATE) {
char suffix = val->is_dotnew ? 'N' : 'V';
EMIT_HEAD(c, "tcg_gen_movi_i%u(P%c%c, 0);\n", val->bit_width,
diff --git a/target/hexagon/gen_helper_funcs.py b/target/hexagon/gen_helper_funcs.py
index 19e9883f4c..7a224b66e6 100755
--- a/target/hexagon/gen_helper_funcs.py
+++ b/target/hexagon/gen_helper_funcs.py
@@ -1,7 +1,7 @@
#!/usr/bin/env python3
##
-## Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved.
+## Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
@@ -226,6 +226,14 @@ def gen_helper_function(f, tag, tagregs, tagimms):
print("Bad register parse: ",regtype,regid,toss,numregs)
i += 1
+ ## For conditional instructions, we pass in the destination register
+ if 'A_CONDEXEC' in hex_common.attribdict[tag]:
+ for regtype, regid, toss, numregs in regs:
+ if (hex_common.is_writeonly(regid) and
+ not hex_common.is_hvx_reg(regtype)):
+ gen_helper_arg_opn(f, regtype, regid, i, tag)
+ i += 1
+
## Arguments to the helper function are the source regs and immediates
for regtype,regid,toss,numregs in regs:
if (hex_common.is_read(regid)):
@@ -262,10 +270,11 @@ def gen_helper_function(f, tag, tagregs, tagimms):
if hex_common.need_ea(tag): gen_decl_ea(f)
## Declare the return variable
i=0
- for regtype,regid,toss,numregs in regs:
- if (hex_common.is_writeonly(regid)):
- gen_helper_dest_decl_opn(f,regtype,regid,i)
- i += 1
+ if 'A_CONDEXEC' not in hex_common.attribdict[tag]:
+ for regtype,regid,toss,numregs in regs:
+ if (hex_common.is_writeonly(regid)):
+ gen_helper_dest_decl_opn(f,regtype,regid,i)
+ i += 1
for regtype,regid,toss,numregs in regs:
if (hex_common.is_read(regid)):
diff --git a/target/hexagon/gen_helper_protos.py b/target/hexagon/gen_helper_protos.py
index 674bf370fa..ddddc9e4f0 100755
--- a/target/hexagon/gen_helper_protos.py
+++ b/target/hexagon/gen_helper_protos.py
@@ -1,7 +1,7 @@
#!/usr/bin/env python3
##
-## Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved.
+## Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
@@ -87,6 +87,7 @@ def gen_helper_prototype(f, tag, tagregs, tagimms):
if hex_common.need_slot(tag): def_helper_size += 1
if hex_common.need_PC(tag): def_helper_size += 1
if hex_common.helper_needs_next_PC(tag): def_helper_size += 1
+ if hex_common.need_condexec_reg(tag, regs): def_helper_size += 1
f.write('DEF_HELPER_%s(%s' % (def_helper_size, tag))
## The return type is void
f.write(', void' )
@@ -96,6 +97,7 @@ def gen_helper_prototype(f, tag, tagregs, tagimms):
if hex_common.need_part1(tag): def_helper_size += 1
if hex_common.need_slot(tag): def_helper_size += 1
if hex_common.need_PC(tag): def_helper_size += 1
+ if hex_common.need_condexec_reg(tag, regs): def_helper_size += 1
if hex_common.helper_needs_next_PC(tag): def_helper_size += 1
f.write('DEF_HELPER_%s(%s' % (def_helper_size, tag))
@@ -121,6 +123,14 @@ def gen_helper_prototype(f, tag, tagregs, tagimms):
gen_def_helper_opn(f, tag, regtype, regid, toss, numregs, i)
i += 1
+ ## For conditional instructions, we pass in the destination register
+ if 'A_CONDEXEC' in hex_common.attribdict[tag]:
+ for regtype, regid, toss, numregs in regs:
+ if (hex_common.is_writeonly(regid) and
+ not hex_common.is_hvx_reg(regtype)):
+ gen_def_helper_opn(f, tag, regtype, regid, toss, numregs, i)
+ i += 1
+
## Generate the qemu type for each input operand (regs and immediates)
for regtype,regid,toss,numregs in regs:
if (hex_common.is_read(regid)):
diff --git a/target/hexagon/gen_tcg_funcs.py b/target/hexagon/gen_tcg_funcs.py
index 3786ede44c..e2fbb50949 100755
--- a/target/hexagon/gen_tcg_funcs.py
+++ b/target/hexagon/gen_tcg_funcs.py
@@ -37,23 +37,33 @@ def gen_free_ea_tcg(f):
def genptr_decl_pair_writable(f, tag, regtype, regid, regno):
regN="%s%sN" % (regtype,regid)
- f.write(" TCGv_i64 %s%sV = tcg_temp_local_new_i64();\n" % \
- (regtype, regid))
- if (regtype == "C"):
+ if (regtype == "R"):
+ f.write(" const int %s = insn->regno[%d];\n" % (regN, regno))
+ elif (regtype == "C"):
f.write(" const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \
(regN, regno))
else:
- f.write(" const int %s = insn->regno[%d];\n" % (regN, regno))
+ print("Bad register parse: ", regtype, regid)
+ f.write(" TCGv_i64 %s%sV = get_result_gpr_pair(ctx, %s);\n" % \
+ (regtype, regid, regN))
def genptr_decl_writable(f, tag, regtype, regid, regno):
regN="%s%sN" % (regtype,regid)
- f.write(" TCGv %s%sV = tcg_temp_local_new();\n" % \
- (regtype, regid))
- if (regtype == "C"):
+ if (regtype == "R"):
+ f.write(" const int %s = insn->regno[%d];\n" % (regN, regno))
+ f.write(" TCGv %s%sV = get_result_gpr(ctx, %s);\n" % \
+ (regtype, regid, regN))
+ elif (regtype == "C"):
f.write(" const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \
(regN, regno))
- else:
+ f.write(" TCGv %s%sV = get_result_gpr(ctx, %s);\n" % \
+ (regtype, regid, regN))
+ elif (regtype == "P"):
f.write(" const int %s = insn->regno[%d];\n" % (regN, regno))
+ f.write(" TCGv %s%sV = tcg_temp_local_new();\n" % \
+ (regtype, regid))
+ else:
+ print("Bad register parse: ", regtype, regid)
def genptr_decl(f, tag, regtype, regid, regno):
regN="%s%sN" % (regtype,regid)
@@ -250,11 +260,10 @@ def genptr_decl_imm(f,immlett):
def genptr_free(f, tag, regtype, regid, regno):
if (regtype == "R"):
- if (regid in {"dd", "ss", "tt", "xx", "yy"}):
+ if (regid in {"ss", "tt"}):
f.write(" tcg_temp_free_i64(%s%sV);\n" % (regtype, regid))
- elif (regid in {"d", "e", "x", "y"}):
- f.write(" tcg_temp_free(%s%sV);\n" % (regtype, regid))
- elif (regid not in {"s", "t", "u", "v"}):
+ elif (regid not in {"dd", "xx", "yy", "d", "e", "x", "y",
+ "s", "t", "u", "v"}):
print("Bad register parse: ",regtype,regid)
elif (regtype == "P"):
if (regid in {"d", "e", "x"}):
@@ -262,11 +271,11 @@ def genptr_free(f, tag, regtype, regid, regno):
elif (regid not in {"s", "t", "u", "v"}):
print("Bad register parse: ",regtype,regid)
elif (regtype == "C"):
- if (regid in {"dd", "ss"}):
+ if (regid in {"ss"}):
f.write(" tcg_temp_free_i64(%s%sV);\n" % (regtype, regid))
- elif (regid in {"d", "s"}):
+ elif (regid in {"s"}):
f.write(" tcg_temp_free(%s%sV);\n" % (regtype, regid))
- else:
+ elif (regid not in {"dd", "d"}):
print("Bad register parse: ",regtype,regid)
elif (regtype == "M"):
if (regid != "u"):
@@ -323,8 +332,12 @@ def genptr_src_read(f, tag, regtype, regid):
f.write(" hex_gpr[%s%sN + 1]);\n" % \
(regtype, regid))
elif (regid in {"x", "y"}):
- f.write(" tcg_gen_mov_tl(%s%sV, hex_gpr[%s%sN]);\n" % \
- (regtype,regid,regtype,regid))
+ ## For read/write registers, we need to get the original value into
+ ## the result TCGv. For conditional instructions, this is done in
+ ## gen_start_packet. For unconditional instructions, we do it here.
+ if ('A_CONDEXEC' not in hex_common.attribdict[tag]):
+ f.write(" tcg_gen_mov_tl(%s%sV, hex_gpr[%s%sN]);\n" % \
+ (regtype, regid, regtype, regid))
elif (regid not in {"s", "t", "u", "v"}):
print("Bad register parse: ", regtype, regid)
elif (regtype == "P"):
@@ -434,25 +447,16 @@ def gen_helper_call_imm(f,immlett):
f.write(", tcgv_%s" % hex_common.imm_name(immlett))
def genptr_dst_write_pair(f, tag, regtype, regid):
- if ('A_CONDEXEC' in hex_common.attribdict[tag]):
- f.write(" gen_log_predicated_reg_write_pair(%s%sN, %s%sV, insn->slot);\n" % \
- (regtype, regid, regtype, regid))
- else:
- f.write(" gen_log_reg_write_pair(%s%sN, %s%sV);\n" % \
- (regtype, regid, regtype, regid))
+ f.write(" gen_log_reg_write_pair(%s%sN, %s%sV);\n" % \
+ (regtype, regid, regtype, regid))
def genptr_dst_write(f, tag, regtype, regid):
if (regtype == "R"):
if (regid in {"dd", "xx", "yy"}):
genptr_dst_write_pair(f, tag, regtype, regid)
elif (regid in {"d", "e", "x", "y"}):
- if ('A_CONDEXEC' in hex_common.attribdict[tag]):
- f.write(" gen_log_predicated_reg_write(%s%sN, %s%sV,\n" % \
- (regtype, regid, regtype, regid))
- f.write(" insn->slot);\n")
- else:
- f.write(" gen_log_reg_write(%s%sN, %s%sV);\n" % \
- (regtype, regid, regtype, regid))
+ f.write(" gen_log_reg_write(%s%sN, %s%sV);\n" % \
+ (regtype, regid, regtype, regid))
else:
print("Bad register parse: ", regtype, regid)
elif (regtype == "P"):
@@ -536,15 +540,15 @@ def genptr_dst_write_opn(f,regtype, regid, tag):
## For A2_add: Rd32=add(Rs32,Rt32), { RdV=RsV+RtV;}
## We produce:
## static void generate_A2_add(DisasContext *ctx)
-## {
-## TCGv RdV = tcg_temp_local_new();
-## const int RdN = insn->regno[0];
-## TCGv RsV = hex_gpr[insn->regno[1]];
-## TCGv RtV = hex_gpr[insn->regno[2]];
-## <GEN>
-## gen_log_reg_write(RdN, RdV);
-## tcg_temp_free(RdV);
-## }
+## {
+## Insn *insn __attribute__((unused)) = ctx->insn;
+## const int RdN = insn->regno[0];
+## TCGv RdV = get_result_gpr(ctx, RdN);
+## TCGv RsV = hex_gpr[insn->regno[1]];
+## TCGv RtV = hex_gpr[insn->regno[2]];
+## <GEN>
+## gen_log_reg_write(RdN, RdV);
+## }
##
## where <GEN> depends on hex_common.skip_qemu_helper(tag)
## if hex_common.skip_qemu_helper(tag) is True
@@ -628,6 +632,14 @@ def gen_tcg_func(f, tag, regs, imms):
if (i > 0): f.write(", ")
f.write("cpu_env")
i=1
+ ## For conditional instructions, we pass in the destination register
+ if 'A_CONDEXEC' in hex_common.attribdict[tag]:
+ for regtype, regid, toss, numregs in regs:
+ if (hex_common.is_writeonly(regid) and
+ not hex_common.is_hvx_reg(regtype)):
+ gen_helper_call_opn(f, tag, regtype, regid, toss, \
+ numregs, i)
+ i += 1
for regtype,regid,toss,numregs in regs:
if (hex_common.is_written(regid)):
if (not hex_common.is_hvx_reg(regtype)):
diff --git a/target/hexagon/hex_common.py b/target/hexagon/hex_common.py
index 76da362c11..0200a66cb6 100755
--- a/target/hexagon/hex_common.py
+++ b/target/hexagon/hex_common.py
@@ -1,7 +1,7 @@
#!/usr/bin/env python3
##
-## Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved.
+## Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
@@ -237,6 +237,13 @@ def helper_needs_next_PC(tag):
def need_pkt_has_multi_cof(tag):
return 'A_COF' in attribdict[tag]
+def need_condexec_reg(tag, regs):
+ if 'A_CONDEXEC' in attribdict[tag]:
+ for regtype, regid, toss, numregs in regs:
+ if is_writeonly(regid) and not is_hvx_reg(regtype):
+ return True
+ return False
+
def skip_qemu_helper(tag):
return tag in overrides.keys()
--
2.17.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH v5 13/14] Hexagon (target/hexagon) Reduce manipulation of slot_cancelled
2023-01-31 22:56 [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
` (11 preceding siblings ...)
2023-01-31 22:56 ` [PATCH v5 12/14] Hexagon (target/hexagon) Remove gen_log_predicated_reg_write[_pair] Taylor Simpson
@ 2023-01-31 22:56 ` Taylor Simpson
2023-02-24 14:24 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 14/14] Hexagon (target/hexagon) Improve code gen for predicated HVX instructions Taylor Simpson
13 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-01-31 22:56 UTC (permalink / raw)
To: qemu-devel
Cc: tsimpson, richard.henderson, philmd, ale, anjo, bcain, quic_mathbern
We only need to track slot for predicated stores and predicated HVX
instructions.
Add arguments to the probe helper functions to indicate if the slot
is predicated.
Here is a simple example of the differences in the TCG code generated:
IN:
0x00400094: 0xf900c102 { if (P0) R2 = and(R0,R1) }
BEFORE
---- 00400094
mov_i32 slot_cancelled,$0x0
mov_i32 new_r2,r2
and_i32 tmp0,p0,$0x1
brcond_i32 tmp0,$0x0,eq,$L1
and_i32 tmp0,r0,r1
mov_i32 new_r2,tmp0
br $L2
set_label $L1
or_i32 slot_cancelled,slot_cancelled,$0x8
set_label $L2
mov_i32 r2,new_r2
AFTER
---- 00400094
mov_i32 new_r2,r2
and_i32 tmp0,p0,$0x1
brcond_i32 tmp0,$0x0,eq,$L1
and_i32 tmp0,r0,r1
mov_i32 new_r2,tmp0
br $L2
set_label $L1
set_label $L2
mov_i32 r2,new_r2
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
target/hexagon/macros.h | 2 +-
target/hexagon/op_helper.h | 3 +--
target/hexagon/idef-parser/parser-helpers.c | 1 -
target/hexagon/op_helper.c | 23 +++++++++----------
target/hexagon/translate.c | 25 ++++++++++++++++++---
target/hexagon/idef-parser/idef-parser.lex | 4 ++--
target/hexagon/idef-parser/idef-parser.y | 7 +++---
7 files changed, 41 insertions(+), 24 deletions(-)
diff --git a/target/hexagon/macros.h b/target/hexagon/macros.h
index f5ff923bbd..80dc768e62 100644
--- a/target/hexagon/macros.h
+++ b/target/hexagon/macros.h
@@ -205,7 +205,7 @@ static inline void gen_cancel(uint32_t slot)
#define CANCEL gen_cancel(slot);
#else
-#define CANCEL cancel_slot(env, slot)
+#define CANCEL do { } while (0)
#endif
#define LOAD_CANCEL(EA) do { CANCEL; } while (0)
diff --git a/target/hexagon/op_helper.h b/target/hexagon/op_helper.h
index 02347edee8..34b3a53975 100644
--- a/target/hexagon/op_helper.h
+++ b/target/hexagon/op_helper.h
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -19,7 +19,6 @@
#define HEXAGON_OP_HELPER_H
/* Misc functions */
-void cancel_slot(CPUHexagonState *env, uint32_t slot);
void write_new_pc(CPUHexagonState *env, bool pkt_has_multi_cof, target_ulong addr);
uint8_t mem_load1(CPUHexagonState *env, uint32_t slot, target_ulong vaddr);
diff --git a/target/hexagon/idef-parser/parser-helpers.c b/target/hexagon/idef-parser/parser-helpers.c
index eb652d6a7a..c44d3a238f 100644
--- a/target/hexagon/idef-parser/parser-helpers.c
+++ b/target/hexagon/idef-parser/parser-helpers.c
@@ -1901,7 +1901,6 @@ void gen_cancel(Context *c, YYLTYPE *locp)
void gen_load_cancel(Context *c, YYLTYPE *locp)
{
- gen_cancel(c, locp);
OUT(c, locp, "if (insn->slot == 0 && pkt->pkt_has_store_s1) {\n");
OUT(c, locp, "ctx->s1_store_processed = false;\n");
OUT(c, locp, "process_store(ctx, 1);\n");
diff --git a/target/hexagon/op_helper.c b/target/hexagon/op_helper.c
index 9425941c69..f62d651a65 100644
--- a/target/hexagon/op_helper.c
+++ b/target/hexagon/op_helper.c
@@ -415,9 +415,10 @@ int32_t HELPER(vacsh_pred)(CPUHexagonState *env,
return PeV;
}
-static void probe_store(CPUHexagonState *env, int slot, int mmu_idx)
+static void probe_store(CPUHexagonState *env, int slot, int mmu_idx,
+ bool is_predicated)
{
- if (!(env->slot_cancelled & (1 << slot))) {
+ if (!is_predicated || !(env->slot_cancelled & (1 << slot))) {
size1u_t width = env->mem_log_stores[slot].width;
target_ulong va = env->mem_log_stores[slot].va;
uintptr_t ra = GETPC();
@@ -437,9 +438,11 @@ void HELPER(probe_noshuf_load)(CPUHexagonState *env, target_ulong va,
}
/* Called during packet commit when there are two scalar stores */
-void HELPER(probe_pkt_scalar_store_s0)(CPUHexagonState *env, int mmu_idx)
+void HELPER(probe_pkt_scalar_store_s0)(CPUHexagonState *env, int args)
{
- probe_store(env, 0, mmu_idx);
+ int mmu_idx = args & 0x3;
+ bool is_predicated = (args >> 2) & 1;
+ probe_store(env, 0, mmu_idx, is_predicated);
}
void HELPER(probe_hvx_stores)(CPUHexagonState *env, int mmu_idx)
@@ -489,12 +492,14 @@ void HELPER(probe_pkt_scalar_hvx_stores)(CPUHexagonState *env, int mask,
bool has_st0 = (mask >> 0) & 1;
bool has_st1 = (mask >> 1) & 1;
bool has_hvx_stores = (mask >> 2) & 1;
+ bool s0_is_pred = (mask >> 3) & 1;
+ bool s1_is_pred = (mask >> 4) & 1;
if (has_st0) {
- probe_store(env, 0, mmu_idx);
+ probe_store(env, 0, mmu_idx, s0_is_pred);
}
if (has_st1) {
- probe_store(env, 1, mmu_idx);
+ probe_store(env, 1, mmu_idx, s1_is_pred);
}
if (has_hvx_stores) {
HELPER(probe_hvx_stores)(env, mmu_idx);
@@ -1444,12 +1449,6 @@ void HELPER(vwhist128qm)(CPUHexagonState *env, int32_t uiV)
}
}
-void cancel_slot(CPUHexagonState *env, uint32_t slot)
-{
- HEX_DEBUG_LOG("Slot %d cancelled\n", slot);
- env->slot_cancelled |= (1 << slot);
-}
-
/* These macros can be referenced in the generated helper functions */
#define warn(...) /* Nothing */
#define fatal(...) g_assert_not_reached();
diff --git a/target/hexagon/translate.c b/target/hexagon/translate.c
index 53fd935db7..6ee8784910 100644
--- a/target/hexagon/translate.c
+++ b/target/hexagon/translate.c
@@ -248,7 +248,16 @@ static bool check_for_attrib(Packet *pkt, int attrib)
static bool need_slot_cancelled(Packet *pkt)
{
- return check_for_attrib(pkt, A_CONDEXEC);
+ /* We only need slot_cancelled for conditional store and HVX instructions */
+ for (int i = 0; i < pkt->num_insns; i++) {
+ uint16_t opcode = pkt->insn[i].opcode;
+ if (GET_ATTRIB(opcode, A_CONDEXEC) &&
+ (GET_ATTRIB(opcode, A_STORE) ||
+ GET_ATTRIB(opcode, A_CVI))) {
+ return true;
+ }
+ }
+ return false;
}
static bool need_pred_written(Packet *pkt)
@@ -860,6 +869,12 @@ static void gen_commit_packet(DisasContext *ctx)
if (has_hvx_store) {
mask |= (1 << 2);
}
+ if (has_store_s0 && slot_is_predicated(pkt, 0)) {
+ mask |= (1 << 3);
+ }
+ if (has_store_s1 && slot_is_predicated(pkt, 1)) {
+ mask |= (1 << 4);
+ }
mask_tcgv = tcg_constant_tl(mask);
gen_helper_probe_pkt_scalar_hvx_stores(cpu_env, mask_tcgv, mem_idx);
}
@@ -868,8 +883,12 @@ static void gen_commit_packet(DisasContext *ctx)
* process_store_log will execute the slot 1 store first,
* so we only have to probe the store in slot 0
*/
- TCGv mem_idx = tcg_constant_tl(ctx->mem_idx);
- gen_helper_probe_pkt_scalar_store_s0(cpu_env, mem_idx);
+ int args = ctx->mem_idx;
+ if (slot_is_predicated(pkt, 0)) {
+ args |= (1 << 2);
+ }
+ TCGv args_tcgv = tcg_constant_tl(args);
+ gen_helper_probe_pkt_scalar_store_s0(cpu_env, args_tcgv);
}
process_store_log(ctx);
diff --git a/target/hexagon/idef-parser/idef-parser.lex b/target/hexagon/idef-parser/idef-parser.lex
index ff87a02c3a..11a327c259 100644
--- a/target/hexagon/idef-parser/idef-parser.lex
+++ b/target/hexagon/idef-parser/idef-parser.lex
@@ -5,7 +5,7 @@
%{
/*
- * Copyright(c) 2019-2022 rev.ng Labs Srl. All Rights Reserved.
+ * Copyright(c) 2019-2023 rev.ng Labs Srl. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -319,7 +319,7 @@ STRING_LIT \"(\\.|[^"\\])*\"
"fGET_LPCFG" |
"USR.LPCFG" { return LPCFG; }
"LOAD_CANCEL(EA)" { return LOAD_CANCEL; }
-"STORE_CANCEL(EA)" |
+"STORE_CANCEL(EA)" { return STORE_CANCEL; }
"CANCEL" { return CANCEL; }
"N"{LOWER_ID}"N" { yylval->rvalue.type = REGISTER_ARG;
yylval->rvalue.reg.type = DOTNEW;
diff --git a/target/hexagon/idef-parser/idef-parser.y b/target/hexagon/idef-parser/idef-parser.y
index c14cb39500..c0baf16ec4 100644
--- a/target/hexagon/idef-parser/idef-parser.y
+++ b/target/hexagon/idef-parser/idef-parser.y
@@ -1,6 +1,6 @@
%{
/*
- * Copyright(c) 2019-2022 rev.ng Labs Srl. All Rights Reserved.
+ * Copyright(c) 2019-2023 rev.ng Labs Srl. All Rights Reserved.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -53,7 +53,7 @@
%token ABS CROUND ROUND CIRCADD COUNTONES INC DEC ANDA ORA XORA PLUSPLUS ASL
%token ASR LSR EQ NEQ LTE GTE MIN MAX ANDL FOR ICIRC IF MUN FSCR FCHK SXT
%token ZXT CONSTEXT LOCNT BREV SIGN LOAD STORE PC NPC LPCFG
-%token LOAD_CANCEL CANCEL IDENTITY PART1 ROTL INSBITS SETBITS EXTRANGE
+%token LOAD_CANCEL STORE_CANCEL CANCEL IDENTITY PART1 ROTL INSBITS SETBITS EXTRANGE
%token CAST4_8U FAIL CARRY_FROM_ADD ADDSAT64 LSBNEW
%token TYPE_SIZE_T TYPE_INT TYPE_SIGNED TYPE_UNSIGNED TYPE_LONG
@@ -431,10 +431,11 @@ cancel_statement : LOAD_CANCEL
{
gen_load_cancel(c, &@1);
}
- | CANCEL
+ | STORE_CANCEL
{
gen_cancel(c, &@1);
}
+ | CANCEL
;
if_statement : if_stmt
--
2.17.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* [PATCH v5 14/14] Hexagon (target/hexagon) Improve code gen for predicated HVX instructions
2023-01-31 22:56 [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
` (12 preceding siblings ...)
2023-01-31 22:56 ` [PATCH v5 13/14] Hexagon (target/hexagon) Reduce manipulation of slot_cancelled Taylor Simpson
@ 2023-01-31 22:56 ` Taylor Simpson
2023-02-24 14:30 ` Anton Johansson via
13 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-01-31 22:56 UTC (permalink / raw)
To: qemu-devel
Cc: tsimpson, richard.henderson, philmd, ale, anjo, bcain, quic_mathbern
The following improvements are made for predicated HVX instructions
During gen_commit_hvx, unconditionally move the "new" value into
the dest
Don't set slot_cancelled
Remove runtime bookkeeping of which registers were updated
Reduce the cases where gen_log_vreg_write[_pair] is called
It's only needed for special operands VxxV and VyV
Remove gen_log_qreg_write
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
target/hexagon/cpu.h | 5 +--
target/hexagon/gen_tcg_hvx.h | 17 +-------
target/hexagon/translate.h | 16 +++-----
target/hexagon/genptr.c | 50 +++---------------------
target/hexagon/translate.c | 60 +++--------------------------
target/hexagon/README | 28 ++++----------
target/hexagon/gen_analyze_funcs.py | 3 +-
target/hexagon/gen_tcg_funcs.py | 35 ++++-------------
8 files changed, 37 insertions(+), 177 deletions(-)
diff --git a/target/hexagon/cpu.h b/target/hexagon/cpu.h
index 34c0ae0a67..81b663ecfb 100644
--- a/target/hexagon/cpu.h
+++ b/target/hexagon/cpu.h
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -111,11 +111,8 @@ typedef struct CPUArchState {
MMVector future_VRegs[VECTOR_TEMPS_MAX] QEMU_ALIGNED(16);
MMVector tmp_VRegs[VECTOR_TEMPS_MAX] QEMU_ALIGNED(16);
- VRegMask VRegs_updated;
-
MMQReg QRegs[NUM_QREGS] QEMU_ALIGNED(16);
MMQReg future_QRegs[NUM_QREGS] QEMU_ALIGNED(16);
- QRegMask QRegs_updated;
/* Temporaries used within instructions */
MMVectorPair VuuV QEMU_ALIGNED(16);
diff --git a/target/hexagon/gen_tcg_hvx.h b/target/hexagon/gen_tcg_hvx.h
index 083f4d92c6..3154c65ce1 100644
--- a/target/hexagon/gen_tcg_hvx.h
+++ b/target/hexagon/gen_tcg_hvx.h
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2022 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -133,17 +133,12 @@ static inline void assert_vhist_tmp(DisasContext *ctx)
do { \
TCGv lsb = tcg_temp_new(); \
TCGLabel *false_label = gen_new_label(); \
- TCGLabel *end_label = gen_new_label(); \
tcg_gen_andi_tl(lsb, PsV, 1); \
tcg_gen_brcondi_tl(TCG_COND_NE, lsb, PRED, false_label); \
tcg_temp_free(lsb); \
tcg_gen_gvec_mov(MO_64, VdV_off, VuV_off, \
sizeof(MMVector), sizeof(MMVector)); \
- tcg_gen_br(end_label); \
gen_set_label(false_label); \
- tcg_gen_ori_tl(hex_slot_cancelled, hex_slot_cancelled, \
- 1 << insn->slot); \
- gen_set_label(end_label); \
} while (0)
@@ -560,18 +555,13 @@ static inline void assert_vhist_tmp(DisasContext *ctx)
do { \
TCGv LSB = tcg_temp_new(); \
TCGLabel *false_label = gen_new_label(); \
- TCGLabel *end_label = gen_new_label(); \
GET_EA; \
PRED; \
tcg_gen_brcondi_tl(TCG_COND_EQ, LSB, 0, false_label); \
tcg_temp_free(LSB); \
gen_vreg_load(ctx, DSTOFF, EA, true); \
INC; \
- tcg_gen_br(end_label); \
gen_set_label(false_label); \
- tcg_gen_ori_tl(hex_slot_cancelled, hex_slot_cancelled, \
- 1 << insn->slot); \
- gen_set_label(end_label); \
} while (0)
#define fGEN_TCG_PRED_VEC_LOAD_pred_pi \
@@ -731,18 +721,13 @@ static inline void assert_vhist_tmp(DisasContext *ctx)
do { \
TCGv LSB = tcg_temp_new(); \
TCGLabel *false_label = gen_new_label(); \
- TCGLabel *end_label = gen_new_label(); \
GET_EA; \
PRED; \
tcg_gen_brcondi_tl(TCG_COND_EQ, LSB, 0, false_label); \
tcg_temp_free(LSB); \
gen_vreg_store(ctx, EA, SRCOFF, insn->slot, ALIGN); \
INC; \
- tcg_gen_br(end_label); \
gen_set_label(false_label); \
- tcg_gen_ori_tl(hex_slot_cancelled, hex_slot_cancelled, \
- 1 << insn->slot); \
- gen_set_label(end_label); \
} while (0)
#define fGEN_TCG_PRED_VEC_STORE_pred_pi(ALIGN) \
diff --git a/target/hexagon/translate.h b/target/hexagon/translate.h
index 765f2c6a22..04ffa4d041 100644
--- a/target/hexagon/translate.h
+++ b/target/hexagon/translate.h
@@ -49,7 +49,6 @@ typedef struct DisasContext {
int tmp_vregs_idx;
int tmp_vregs_num[VECTOR_TEMPS_MAX];
int vreg_log[NUM_VREGS];
- bool vreg_is_predicated[NUM_VREGS];
int vreg_log_idx;
DECLARE_BITMAP(vregs_updated_tmp, NUM_VREGS);
DECLARE_BITMAP(vregs_updated, NUM_VREGS);
@@ -57,7 +56,6 @@ typedef struct DisasContext {
DECLARE_BITMAP(predicated_future_vregs, NUM_VREGS);
DECLARE_BITMAP(predicated_tmp_vregs, NUM_VREGS);
int qreg_log[NUM_QREGS];
- bool qreg_is_predicated[NUM_QREGS];
int qreg_log_idx;
bool pre_commit;
TCGCond branch_cond;
@@ -111,11 +109,12 @@ static inline void ctx_log_vreg_write(DisasContext *ctx,
bool is_predicated)
{
if (type != EXT_TMP) {
- ctx->vreg_log[ctx->vreg_log_idx] = rnum;
- ctx->vreg_is_predicated[ctx->vreg_log_idx] = is_predicated;
- ctx->vreg_log_idx++;
+ if (!test_bit(rnum, ctx->vregs_updated)) {
+ ctx->vreg_log[ctx->vreg_log_idx] = rnum;
+ ctx->vreg_log_idx++;
+ set_bit(rnum, ctx->vregs_updated);
+ }
- set_bit(rnum, ctx->vregs_updated);
if (is_predicated) {
set_bit(rnum, ctx->predicated_future_vregs);
}
@@ -140,10 +139,9 @@ static inline void ctx_log_vreg_write_pair(DisasContext *ctx,
}
static inline void ctx_log_qreg_write(DisasContext *ctx,
- int rnum, bool is_predicated)
+ int rnum)
{
ctx->qreg_log[ctx->qreg_log_idx] = rnum;
- ctx->qreg_is_predicated[ctx->qreg_log_idx] = is_predicated;
ctx->qreg_log_idx++;
}
@@ -164,8 +162,6 @@ extern TCGv hex_dczero_addr;
extern TCGv hex_llsc_addr;
extern TCGv hex_llsc_val;
extern TCGv_i64 hex_llsc_val_i64;
-extern TCGv hex_VRegs_updated;
-extern TCGv hex_QRegs_updated;
extern TCGv hex_vstore_addr[VSTORES_MAX];
extern TCGv hex_vstore_size[VSTORES_MAX];
extern TCGv hex_vstore_pending[VSTORES_MAX];
diff --git a/target/hexagon/genptr.c b/target/hexagon/genptr.c
index f937a17b24..62e69aa8f7 100644
--- a/target/hexagon/genptr.c
+++ b/target/hexagon/genptr.c
@@ -1029,70 +1029,32 @@ static intptr_t vreg_src_off(DisasContext *ctx, int num)
}
static void gen_log_vreg_write(DisasContext *ctx, intptr_t srcoff, int num,
- VRegWriteType type, int slot_num,
- bool is_predicated)
+ VRegWriteType type)
{
- TCGLabel *label_end = NULL;
intptr_t dstoff;
- if (is_predicated) {
- TCGv cancelled = tcg_temp_local_new();
- label_end = gen_new_label();
-
- /* Don't do anything if the slot was cancelled */
- tcg_gen_extract_tl(cancelled, hex_slot_cancelled, slot_num, 1);
- tcg_gen_brcondi_tl(TCG_COND_NE, cancelled, 0, label_end);
- tcg_temp_free(cancelled);
- }
-
if (type != EXT_TMP) {
dstoff = ctx_future_vreg_off(ctx, num, 1, true);
tcg_gen_gvec_mov(MO_64, dstoff, srcoff,
sizeof(MMVector), sizeof(MMVector));
- tcg_gen_ori_tl(hex_VRegs_updated, hex_VRegs_updated, 1 << num);
} else {
dstoff = ctx_tmp_vreg_off(ctx, num, 1, false);
tcg_gen_gvec_mov(MO_64, dstoff, srcoff,
sizeof(MMVector), sizeof(MMVector));
}
-
- if (is_predicated) {
- gen_set_label(label_end);
- }
}
static void gen_log_vreg_write_pair(DisasContext *ctx, intptr_t srcoff, int num,
- VRegWriteType type, int slot_num,
- bool is_predicated)
+ VRegWriteType type)
{
- gen_log_vreg_write(ctx, srcoff, num ^ 0, type, slot_num, is_predicated);
+ gen_log_vreg_write(ctx, srcoff, num ^ 0, type);
srcoff += sizeof(MMVector);
- gen_log_vreg_write(ctx, srcoff, num ^ 1, type, slot_num, is_predicated);
+ gen_log_vreg_write(ctx, srcoff, num ^ 1, type);
}
-static void gen_log_qreg_write(intptr_t srcoff, int num, int vnew,
- int slot_num, bool is_predicated)
+static intptr_t get_result_qreg(DisasContext *ctx, int qnum)
{
- TCGLabel *label_end = NULL;
- intptr_t dstoff;
-
- if (is_predicated) {
- TCGv cancelled = tcg_temp_local_new();
- label_end = gen_new_label();
-
- /* Don't do anything if the slot was cancelled */
- tcg_gen_extract_tl(cancelled, hex_slot_cancelled, slot_num, 1);
- tcg_gen_brcondi_tl(TCG_COND_NE, cancelled, 0, label_end);
- tcg_temp_free(cancelled);
- }
-
- dstoff = offsetof(CPUHexagonState, future_QRegs[num]);
- tcg_gen_gvec_mov(MO_64, dstoff, srcoff, sizeof(MMQReg), sizeof(MMQReg));
-
- if (is_predicated) {
- tcg_gen_ori_tl(hex_QRegs_updated, hex_QRegs_updated, 1 << num);
- gen_set_label(label_end);
- }
+ return offsetof(CPUHexagonState, future_QRegs[qnum]);
}
static void gen_vreg_load(DisasContext *ctx, intptr_t dstoff, TCGv src,
diff --git a/target/hexagon/translate.c b/target/hexagon/translate.c
index 6ee8784910..59dd721ec3 100644
--- a/target/hexagon/translate.c
+++ b/target/hexagon/translate.c
@@ -56,8 +56,6 @@ TCGv hex_dczero_addr;
TCGv hex_llsc_addr;
TCGv hex_llsc_val;
TCGv_i64 hex_llsc_val_i64;
-TCGv hex_VRegs_updated;
-TCGv hex_QRegs_updated;
TCGv hex_vstore_addr[VSTORES_MAX];
TCGv hex_vstore_size[VSTORES_MAX];
TCGv hex_vstore_pending[VSTORES_MAX];
@@ -248,12 +246,11 @@ static bool check_for_attrib(Packet *pkt, int attrib)
static bool need_slot_cancelled(Packet *pkt)
{
- /* We only need slot_cancelled for conditional store and HVX instructions */
+ /* We only need slot_cancelled for conditional store instructions */
for (int i = 0; i < pkt->num_insns; i++) {
uint16_t opcode = pkt->insn[i].opcode;
if (GET_ATTRIB(opcode, A_CONDEXEC) &&
- (GET_ATTRIB(opcode, A_STORE) ||
- GET_ATTRIB(opcode, A_CVI))) {
+ GET_ATTRIB(opcode, A_SCALAR_STORE)) {
return true;
}
}
@@ -453,11 +450,6 @@ static void gen_start_packet(DisasContext *ctx)
i = find_next_bit(ctx->predicated_tmp_vregs, NUM_VREGS, i + 1);
}
}
-
- if (pkt->pkt_has_hvx) {
- tcg_gen_movi_tl(hex_VRegs_updated, 0);
- tcg_gen_movi_tl(hex_QRegs_updated, 0);
- }
}
bool is_gather_store_insn(DisasContext *ctx)
@@ -730,67 +722,31 @@ static void gen_commit_hvx(DisasContext *ctx)
/*
* for (i = 0; i < ctx->vreg_log_idx; i++) {
* int rnum = ctx->vreg_log[i];
- * if (ctx->vreg_is_predicated[i]) {
- * if (env->VRegs_updated & (1 << rnum)) {
- * env->VRegs[rnum] = env->future_VRegs[rnum];
- * }
- * } else {
- * env->VRegs[rnum] = env->future_VRegs[rnum];
- * }
+ * env->VRegs[rnum] = env->future_VRegs[rnum];
* }
*/
for (i = 0; i < ctx->vreg_log_idx; i++) {
int rnum = ctx->vreg_log[i];
- bool is_predicated = ctx->vreg_is_predicated[i];
intptr_t dstoff = offsetof(CPUHexagonState, VRegs[rnum]);
intptr_t srcoff = ctx_future_vreg_off(ctx, rnum, 1, false);
size_t size = sizeof(MMVector);
- if (is_predicated) {
- TCGv cmp = tcg_temp_new();
- TCGLabel *label_skip = gen_new_label();
-
- tcg_gen_andi_tl(cmp, hex_VRegs_updated, 1 << rnum);
- tcg_gen_brcondi_tl(TCG_COND_EQ, cmp, 0, label_skip);
- tcg_temp_free(cmp);
- tcg_gen_gvec_mov(MO_64, dstoff, srcoff, size, size);
- gen_set_label(label_skip);
- } else {
- tcg_gen_gvec_mov(MO_64, dstoff, srcoff, size, size);
- }
+ tcg_gen_gvec_mov(MO_64, dstoff, srcoff, size, size);
}
/*
* for (i = 0; i < ctx->qreg_log_idx; i++) {
* int rnum = ctx->qreg_log[i];
- * if (ctx->qreg_is_predicated[i]) {
- * if (env->QRegs_updated) & (1 << rnum)) {
- * env->QRegs[rnum] = env->future_QRegs[rnum];
- * }
- * } else {
- * env->QRegs[rnum] = env->future_QRegs[rnum];
- * }
+ * env->QRegs[rnum] = env->future_QRegs[rnum];
* }
*/
for (i = 0; i < ctx->qreg_log_idx; i++) {
int rnum = ctx->qreg_log[i];
- bool is_predicated = ctx->qreg_is_predicated[i];
intptr_t dstoff = offsetof(CPUHexagonState, QRegs[rnum]);
intptr_t srcoff = offsetof(CPUHexagonState, future_QRegs[rnum]);
size_t size = sizeof(MMQReg);
- if (is_predicated) {
- TCGv cmp = tcg_temp_new();
- TCGLabel *label_skip = gen_new_label();
-
- tcg_gen_andi_tl(cmp, hex_QRegs_updated, 1 << rnum);
- tcg_gen_brcondi_tl(TCG_COND_EQ, cmp, 0, label_skip);
- tcg_temp_free(cmp);
- tcg_gen_gvec_mov(MO_64, dstoff, srcoff, size, size);
- gen_set_label(label_skip);
- } else {
- tcg_gen_gvec_mov(MO_64, dstoff, srcoff, size, size);
- }
+ tcg_gen_gvec_mov(MO_64, dstoff, srcoff, size, size);
}
if (pkt_has_hvx_store(ctx->pkt)) {
@@ -1125,10 +1081,6 @@ void hexagon_translate_init(void)
offsetof(CPUHexagonState, llsc_val), "llsc_val");
hex_llsc_val_i64 = tcg_global_mem_new_i64(cpu_env,
offsetof(CPUHexagonState, llsc_val_i64), "llsc_val_i64");
- hex_VRegs_updated = tcg_global_mem_new(cpu_env,
- offsetof(CPUHexagonState, VRegs_updated), "VRegs_updated");
- hex_QRegs_updated = tcg_global_mem_new(cpu_env,
- offsetof(CPUHexagonState, QRegs_updated), "QRegs_updated");
for (i = 0; i < STORES_MAX; i++) {
snprintf(store_addr_names[i], NAME_LEN, "store_addr_%d", i);
hex_store_addr[i] = tcg_global_mem_new(cpu_env,
diff --git a/target/hexagon/README b/target/hexagon/README
index d92731e346..6a9efb6fcf 100644
--- a/target/hexagon/README
+++ b/target/hexagon/README
@@ -137,31 +137,25 @@ For HVX vectors, the generator behaves slightly differently. The wide vectors
won't fit in a TCGv or TCGv_i64, so we pass TCGv_ptr variables to pass the
address to helper functions. Here's an example for an HVX vector-add-word
istruction.
- static void generate_V6_vaddw(
- CPUHexagonState *env,
- DisasContext *ctx,
- Insn *insn,
- Packet *pkt)
+ static void generate_V6_vaddw(DisasContext *ctx)
{
+ Insn *insn __attribute__((unused)) = ctx->insn;
const int VdN = insn->regno[0];
const intptr_t VdV_off =
ctx_future_vreg_off(ctx, VdN, 1, true);
- TCGv_ptr VdV = tcg_temp_local_new_ptr();
+ TCGv_ptr VdV = tcg_temp_new_ptr();
tcg_gen_addi_ptr(VdV, cpu_env, VdV_off);
const int VuN = insn->regno[1];
const intptr_t VuV_off =
vreg_src_off(ctx, VuN);
- TCGv_ptr VuV = tcg_temp_local_new_ptr();
+ TCGv_ptr VuV = tcg_temp_new_ptr();
const int VvN = insn->regno[2];
const intptr_t VvV_off =
vreg_src_off(ctx, VvN);
- TCGv_ptr VvV = tcg_temp_local_new_ptr();
+ TCGv_ptr VvV = tcg_temp_new_ptr();
tcg_gen_addi_ptr(VuV, cpu_env, VuV_off);
tcg_gen_addi_ptr(VvV, cpu_env, VvV_off);
- TCGv slot = tcg_constant_tl(insn->slot);
- gen_helper_V6_vaddw(cpu_env, VdV, VuV, VvV, slot);
- tcg_temp_free(slot);
- gen_log_vreg_write(ctx, VdV_off, VdN, EXT_DFL, insn->slot, false);
+ gen_helper_V6_vaddw(cpu_env, VdV, VuV, VvV);
tcg_temp_free_ptr(VdV);
tcg_temp_free_ptr(VuV);
tcg_temp_free_ptr(VvV);
@@ -177,12 +171,9 @@ functions from tcg-op-gvec.h. Here's the override for this instruction.
Finally, we notice that the override doesn't use the TCGv_ptr variables, so
we don't generate them when an override is present. Here is what we generate
when the override is present.
- static void generate_V6_vaddw(
- CPUHexagonState *env,
- DisasContext *ctx,
- Insn *insn,
- Packet *pkt)
+ static void generate_V6_vaddw(DisasContext *ctx)
{
+ Insn *insn __attribute__((unused)) = ctx->insn;
const int VdN = insn->regno[0];
const intptr_t VdV_off =
ctx_future_vreg_off(ctx, VdN, 1, true);
@@ -193,7 +184,6 @@ when the override is present.
const intptr_t VvV_off =
vreg_src_off(ctx, VvN);
fGEN_TCG_V6_vaddw({ fHIDE(int i;) fVFOREACH(32, i) { VdV.w[i] = VuV.w[i] + VvV.w[i] ; } });
- gen_log_vreg_write(ctx, VdV_off, VdN, EXT_DFL, insn->slot, false);
}
We also generate an analyze_<tag> function for each instruction. Currently,
@@ -286,10 +276,8 @@ For Hexagon Vector eXtensions (HVX), the following fields are used
VRegs Vector registers
future_VRegs Registers to be stored during packet commit
tmp_VRegs Temporary registers *not* stored during commit
- VRegs_updated Mask of predicated vector writes
QRegs Q (vector predicate) registers
future_QRegs Registers to be stored during packet commit
- QRegs_updated Mask of predicated vector writes
*** Debugging ***
diff --git a/target/hexagon/gen_analyze_funcs.py b/target/hexagon/gen_analyze_funcs.py
index 3a1db46ac3..4c6dba033b 100755
--- a/target/hexagon/gen_analyze_funcs.py
+++ b/target/hexagon/gen_analyze_funcs.py
@@ -110,8 +110,7 @@ def analyze_opn_old(f, tag, regtype, regid, regno):
if (regid in {"d", "e", "x"}):
f.write(" const int %s = insn->regno[%d];\n" % \
(regN, regno))
- f.write(" ctx_log_qreg_write(ctx, %s, %s);\n" % \
- (regN, predicated))
+ f.write(" ctx_log_qreg_write(ctx, %s);\n" % (regN))
elif (regid in {"s", "t", "u", "v"}):
f.write("// const int %s = insn->regno[%d];\n" % \
(regN, regno))
diff --git a/target/hexagon/gen_tcg_funcs.py b/target/hexagon/gen_tcg_funcs.py
index e2fbb50949..f5a2798f9b 100755
--- a/target/hexagon/gen_tcg_funcs.py
+++ b/target/hexagon/gen_tcg_funcs.py
@@ -183,8 +183,7 @@ def genptr_decl(f, tag, regtype, regid, regno):
(regtype, regid, regno))
f.write(" const intptr_t %s%sV_off =\n" % \
(regtype, regid))
- f.write(" offsetof(CPUHexagonState,\n")
- f.write(" future_QRegs[%s%sN]);\n" % \
+ f.write(" get_result_qreg(ctx, %s%sN);\n" % \
(regtype, regid))
if (not hex_common.skip_qemu_helper(tag)):
f.write(" TCGv_ptr %s%sV = tcg_temp_new_ptr();\n" % \
@@ -479,36 +478,18 @@ def genptr_dst_write(f, tag, regtype, regid):
def genptr_dst_write_ext(f, tag, regtype, regid, newv="EXT_DFL"):
if (regtype == "V"):
- if (regid in {"dd", "xx", "yy"}):
- if ('A_CONDEXEC' in hex_common.attribdict[tag]):
- is_predicated = "true"
- else:
- is_predicated = "false"
+ if (regid in {"xx"}):
f.write(" gen_log_vreg_write_pair(ctx, %s%sV_off, %s%sN, " % \
(regtype, regid, regtype, regid))
- f.write("%s, insn->slot, %s);\n" % \
- (newv, is_predicated))
- elif (regid in {"d", "x", "y"}):
- if ('A_CONDEXEC' in hex_common.attribdict[tag]):
- is_predicated = "true"
- else:
- is_predicated = "false"
- f.write(" gen_log_vreg_write(ctx, %s%sV_off, %s%sN, %s, " % \
+ f.write("%s);\n" % \
+ (newv))
+ elif (regid in {"y"}):
+ f.write(" gen_log_vreg_write(ctx, %s%sV_off, %s%sN, %s);\n" % \
(regtype, regid, regtype, regid, newv))
- f.write("insn->slot, %s);\n" % \
- (is_predicated))
- else:
+ elif (regid not in {"dd", "d", "x"}):
print("Bad register parse: ", regtype, regid)
elif (regtype == "Q"):
- if (regid in {"d", "e", "x"}):
- if ('A_CONDEXEC' in hex_common.attribdict[tag]):
- is_predicated = "true"
- else:
- is_predicated = "false"
- f.write(" gen_log_qreg_write(%s%sV_off, %s%sN, %s, " % \
- (regtype, regid, regtype, regid, newv))
- f.write("insn->slot, %s);\n" % (is_predicated))
- else:
+ if (regid not in {"d", "e", "x"}):
print("Bad register parse: ", regtype, regid)
else:
print("Bad register parse: ", regtype, regid)
--
2.17.1
^ permalink raw reply related [flat|nested] 36+ messages in thread
* Re: [PATCH v5 01/14] Hexagon (target/hexagon) Add overrides for jumpr31 instructions
2023-01-31 22:56 ` [PATCH v5 01/14] Hexagon (target/hexagon) Add overrides for jumpr31 instructions Taylor Simpson
@ 2023-02-01 12:05 ` Anton Johansson via
0 siblings, 0 replies; 36+ messages in thread
From: Anton Johansson via @ 2023-02-01 12:05 UTC (permalink / raw)
To: Taylor Simpson, qemu-devel
Cc: richard.henderson, philmd, ale, bcain, quic_mathbern
> Add overrides for
> SL2_jumpr31 Unconditional
> SL2_jumpr31_t Predicated true (old value)
> SL2_jumpr31_f Predicated false (old value)
> SL2_jumpr31_tnew Predicated true (new value)
> SL2_jumpr31_fnew Predicated false (new value)
>
> Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
> ---
> target/hexagon/gen_tcg.h | 15 ++++++++++++++-
> target/hexagon/genptr.c | 10 +++++++++-
> 2 files changed, 23 insertions(+), 2 deletions(-)
Reviewed-by: Anton Johansson <anjo@rev.ng>
^ permalink raw reply [flat|nested] 36+ messages in thread
* Re: [PATCH v5 02/14] Hexagon (target/hexagon) Add overrides for callr
2023-01-31 22:56 ` [PATCH v5 02/14] Hexagon (target/hexagon) Add overrides for callr Taylor Simpson
@ 2023-02-01 12:08 ` Anton Johansson via
0 siblings, 0 replies; 36+ messages in thread
From: Anton Johansson via @ 2023-02-01 12:08 UTC (permalink / raw)
To: Taylor Simpson, qemu-devel
Cc: richard.henderson, philmd, ale, bcain, quic_mathbern
> +static void gen_callr(DisasContext *ctx, TCGv new_pc)
> +{
> + TCGv next_PC =
> + tcg_constant_tl(ctx->pkt->pc + ctx->pkt->encod_pkt_size_in_bytes);
Could we not use ctx->next_PC here?
> + gen_log_reg_write(HEX_REG_LR, next_PC);
> + gen_write_new_pc_addr(ctx, new_pc, TCG_COND_ALWAYS, NULL);
> +}
> +
Otherwise,
Reviewed-by: Anton Johansson <anjo@rev.ng>
^ permalink raw reply [flat|nested] 36+ messages in thread
* Re: [PATCH v5 03/14] Hexagon (target/hexagon) Add overrides for endloop1/endloop01
2023-01-31 22:56 ` [PATCH v5 03/14] Hexagon (target/hexagon) Add overrides for endloop1/endloop01 Taylor Simpson
@ 2023-02-01 12:29 ` Anton Johansson via
2023-02-01 18:43 ` Taylor Simpson
0 siblings, 1 reply; 36+ messages in thread
From: Anton Johansson via @ 2023-02-01 12:29 UTC (permalink / raw)
To: Taylor Simpson, qemu-devel
Cc: richard.henderson, philmd, ale, bcain, quic_mathbern
> +
> +static void gen_endloop01(DisasContext *ctx)
> +{
> + TCGv lpcfg = tcg_temp_local_new();
Move label declarations here per coding style
> +
> + GET_USR_FIELD(USR_LPCFG, lpcfg);
> +
> + /*
> + * if (lpcfg == 1) {
> + * hex_new_pred_value[3] = 0xff;
> + * hex_pred_written |= 1 << 3;
> + * }
> + */
> + TCGLabel *label1 = gen_new_label();
> + tcg_gen_brcondi_tl(TCG_COND_NE, lpcfg, 1, label1);
> + {
> + tcg_gen_movi_tl(hex_new_pred_value[3], 0xff);
> + tcg_gen_ori_tl(hex_pred_written, hex_pred_written, 1 << 3);
> + }
> + gen_set_label(label1);
> +
> + /*
> + * if (lpcfg) {
> + * SET_USR_FIELD(USR_LPCFG, lpcfg - 1);
> + * }
> + */
> + TCGLabel *label2 = gen_new_label();
> + tcg_gen_brcondi_tl(TCG_COND_EQ, lpcfg, 0, label2);
> + {
> + tcg_gen_subi_tl(lpcfg, lpcfg, 1);
> + SET_USR_FIELD(USR_LPCFG, lpcfg);
> + }
> + gen_set_label(label2);
Move tcg_temp_free(lpcfg) here
> +
> + /*
> + * if (hex_gpr[HEX_REG_LC0] > 1) {
> + * PC = hex_gpr[HEX_REG_SA0];
> + * hex_new_value[HEX_REG_LC0] = hex_gpr[HEX_REG_LC0] - 1;
> + * } else {
> + * if (hex_gpr[HEX_REG_LC1] > 1) {
> + * hex_next_pc = hex_gpr[HEX_REG_SA1];
> + * hex_new_value[HEX_REG_LC1] = hex_gpr[HEX_REG_LC1] - 1;
> + * }
> + * }
> + */
> + TCGLabel *label3 = gen_new_label();
> + TCGLabel *done = gen_new_label();
> + tcg_gen_brcondi_tl(TCG_COND_LEU, hex_gpr[HEX_REG_LC0], 1, label3);
> + {
> + gen_jumpr(ctx, hex_gpr[HEX_REG_SA0]);
> + tcg_gen_subi_tl(hex_new_value[HEX_REG_LC0], hex_gpr[HEX_REG_LC0], 1);
> + tcg_gen_br(done);
> + }
> + gen_set_label(label3);
> + tcg_gen_brcondi_tl(TCG_COND_LEU, hex_gpr[HEX_REG_LC1], 1, done);
> + {
> + gen_jumpr(ctx, hex_gpr[HEX_REG_SA1]);
> + tcg_gen_subi_tl(hex_new_value[HEX_REG_LC1], hex_gpr[HEX_REG_LC1], 1);
> + }
> + gen_set_label(done);
> + tcg_temp_free(lpcfg);
> +}
> +
> static void gen_cmp_jumpnv(DisasContext *ctx,
> TCGCond cond, TCGv val, TCGv src, int pc_off)
> {
Otherwise this patch looks good,
Reviewed-by: Anton Johansson <anjo@rev.ng>
^ permalink raw reply [flat|nested] 36+ messages in thread
* Re: [PATCH v5 04/14] Hexagon (target/hexagon) Add overrides for dealloc-return instructions
2023-01-31 22:56 ` [PATCH v5 04/14] Hexagon (target/hexagon) Add overrides for dealloc-return instructions Taylor Simpson
@ 2023-02-01 13:04 ` Anton Johansson via
0 siblings, 0 replies; 36+ messages in thread
From: Anton Johansson via @ 2023-02-01 13:04 UTC (permalink / raw)
To: Taylor Simpson, qemu-devel
Cc: richard.henderson, philmd, ale, bcain, quic_mathbern
> These instructions perform a deallocframe+return (jumpr r31)
>
> Add overrides for
> L4_return
> SL2_return
> L4_return_t
> L4_return_f
> L4_return_tnew_pt
> L4_return_fnew_pt
> L4_return_tnew_pnt
> L4_return_fnew_pnt
> SL2_return_t
> SL2_return_f
> SL2_return_tnew
> SL2_return_fnew
>
> This patch eliminates the last helper that uses write_new_pc, so we
> remove it from op_helper.c
>
> Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
> ---
> target/hexagon/gen_tcg.h | 54 ++++++++++++++++++++++++
> target/hexagon/genptr.c | 86 ++++++++++++++++++++++++++++++++++++++
> target/hexagon/op_helper.c | 26 +-----------
> 3 files changed, 141 insertions(+), 25 deletions(-)
Reviewed-by: Anton Johansson <anjo@rev.ng>
^ permalink raw reply [flat|nested] 36+ messages in thread
* RE: [PATCH v5 03/14] Hexagon (target/hexagon) Add overrides for endloop1/endloop01
2023-02-01 12:29 ` Anton Johansson via
@ 2023-02-01 18:43 ` Taylor Simpson
0 siblings, 0 replies; 36+ messages in thread
From: Taylor Simpson @ 2023-02-01 18:43 UTC (permalink / raw)
To: anjo, qemu-devel
Cc: richard.henderson, philmd, ale, Brian Cain, Matheus Bernardino (QUIC)
> -----Original Message-----
> From: Anton Johansson <anjo@rev.ng>
> Sent: Wednesday, February 1, 2023 6:30 AM
> To: Taylor Simpson <tsimpson@quicinc.com>; qemu-devel@nongnu.org
> Cc: richard.henderson@linaro.org; philmd@linaro.org; ale@rev.ng; Brian Cain
> <bcain@quicinc.com>; Matheus Bernardino (QUIC)
> <quic_mathbern@quicinc.com>
> Subject: Re: [PATCH v5 03/14] Hexagon (target/hexagon) Add overrides for
> endloop1/endloop01
>
> Otherwise this patch looks good,
>
> Reviewed-by: Anton Johansson <anjo@rev.ng>
Thanks for the feedback. I'll make the changes in the next version of the series.
Taylor
^ permalink raw reply [flat|nested] 36+ messages in thread
* Re: [PATCH v5 10/14] Hexagon (tests/tcg/hexagon) Enable HVX tests
2023-01-31 22:56 ` [PATCH v5 10/14] Hexagon (tests/tcg/hexagon) Enable HVX tests Taylor Simpson
@ 2023-02-08 12:54 ` Anton Johansson via
2023-02-08 15:18 ` Taylor Simpson
0 siblings, 1 reply; 36+ messages in thread
From: Anton Johansson via @ 2023-02-08 12:54 UTC (permalink / raw)
To: Taylor Simpson, qemu-devel
Cc: richard.henderson, philmd, ale, bcain, quic_mathbern
On 1/31/23 23:56, Taylor Simpson wrote:
> +HEX_TESTS += hvx_histogram
>
> HEX_TESTS += test_abs
> HEX_TESTS += test_bitcnt
> @@ -78,3 +82,10 @@ TESTS += $(HEX_TESTS)
> usr: usr.c
> $(CC) $(CFLAGS) -mv67t -O2 -Wno-inline-asm -Wno-expansion-to-defined $< -o $@ $(LDFLAGS)
>
> +scatter_gather: CFLAGS += -mhvx
> +vector_add_int: CFLAGS += -mhvx -fvectorize
> +hvx_misc: CFLAGS += -mhvx
> +hvx_histogram: CFLAGS += -mhvx -Wno-gnu-folding-constant
> +
> +hvx_histogram: hvx_histogram.c hvx_histogram_row.S
> + $(CC) $(CFLAGS) $(CROSS_CC_GUEST_CFLAGS) $^ -o $@
I am not able to run check-tcg locally, hvx_histogram fails due to
missing ld-musl-hexagon
TEST hvx_histogram on hexagon
qemu-hexagon: Could not open '/lib/ld-musl-hexagon.so.1': No such
file or directory
--
Anton Johansson,
rev.ng Labs Srl.
^ permalink raw reply [flat|nested] 36+ messages in thread
* RE: [PATCH v5 10/14] Hexagon (tests/tcg/hexagon) Enable HVX tests
2023-02-08 12:54 ` Anton Johansson via
@ 2023-02-08 15:18 ` Taylor Simpson
2023-02-08 20:29 ` Taylor Simpson
0 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-02-08 15:18 UTC (permalink / raw)
To: anjo, qemu-devel
Cc: richard.henderson, philmd, ale, Brian Cain, Matheus Bernardino (QUIC)
> -----Original Message-----
> From: Anton Johansson <anjo@rev.ng>
> Sent: Wednesday, February 8, 2023 6:54 AM
> To: Taylor Simpson <tsimpson@quicinc.com>; qemu-devel@nongnu.org
> Cc: richard.henderson@linaro.org; philmd@linaro.org; ale@rev.ng; Brian Cain
> <bcain@quicinc.com>; Matheus Bernardino (QUIC)
> <quic_mathbern@quicinc.com>
> Subject: Re: [PATCH v5 10/14] Hexagon (tests/tcg/hexagon) Enable HVX tests
>
> WARNING: This email originated from outside of Qualcomm. Please be wary
> of any links or attachments, and do not enable macros.
>
> On 1/31/23 23:56, Taylor Simpson wrote:
> > +HEX_TESTS += hvx_histogram
> >
> > HEX_TESTS += test_abs
> > HEX_TESTS += test_bitcnt
> > @@ -78,3 +82,10 @@ TESTS += $(HEX_TESTS)
> > usr: usr.c
> > $(CC) $(CFLAGS) -mv67t -O2 -Wno-inline-asm
> > -Wno-expansion-to-defined $< -o $@ $(LDFLAGS)
> >
> > +scatter_gather: CFLAGS += -mhvx
> > +vector_add_int: CFLAGS += -mhvx -fvectorize
> > +hvx_misc: CFLAGS += -mhvx
> > +hvx_histogram: CFLAGS += -mhvx -Wno-gnu-folding-constant
> > +
> > +hvx_histogram: hvx_histogram.c hvx_histogram_row.S
> > + $(CC) $(CFLAGS) $(CROSS_CC_GUEST_CFLAGS) $^ -o $@
>
> I am not able to run check-tcg locally, hvx_histogram fails due to missing ld-
> musl-hexagon
>
> TEST hvx_histogram on hexagon
> qemu-hexagon: Could not open '/lib/ld-musl-hexagon.so.1': No such file or
> directory
>
> --
> Anton Johansson,
> rev.ng Labs Srl.
Strange. These are supposed to build statically. I'll investigate.
^ permalink raw reply [flat|nested] 36+ messages in thread
* RE: [PATCH v5 10/14] Hexagon (tests/tcg/hexagon) Enable HVX tests
2023-02-08 15:18 ` Taylor Simpson
@ 2023-02-08 20:29 ` Taylor Simpson
2023-03-03 15:46 ` Anton Johansson via
0 siblings, 1 reply; 36+ messages in thread
From: Taylor Simpson @ 2023-02-08 20:29 UTC (permalink / raw)
To: anjo, qemu-devel
Cc: richard.henderson, philmd, ale, Brian Cain, Matheus Bernardino (QUIC)
> -----Original Message-----
> From: Taylor Simpson
> Sent: Wednesday, February 8, 2023 9:19 AM
> To: anjo@rev.ng; qemu-devel@nongnu.org
> Cc: richard.henderson@linaro.org; philmd@linaro.org; ale@rev.ng; Brian Cain
> <bcain@quicinc.com>; Matheus Bernardino (QUIC)
> <quic_mathbern@quicinc.com>
> Subject: RE: [PATCH v5 10/14] Hexagon (tests/tcg/hexagon) Enable HVX tests
>
>
>
> > -----Original Message-----
> > From: Anton Johansson <anjo@rev.ng>
> > Sent: Wednesday, February 8, 2023 6:54 AM
> > To: Taylor Simpson <tsimpson@quicinc.com>; qemu-devel@nongnu.org
> > Cc: richard.henderson@linaro.org; philmd@linaro.org; ale@rev.ng; Brian
> Cain
> > <bcain@quicinc.com>; Matheus Bernardino (QUIC)
> > <quic_mathbern@quicinc.com>
> > Subject: Re: [PATCH v5 10/14] Hexagon (tests/tcg/hexagon) Enable HVX
> tests
> >
> > WARNING: This email originated from outside of Qualcomm. Please be
> wary
> > of any links or attachments, and do not enable macros.
> >
> > On 1/31/23 23:56, Taylor Simpson wrote:
> > > +HEX_TESTS += hvx_histogram
> > >
> > > HEX_TESTS += test_abs
> > > HEX_TESTS += test_bitcnt
> > > @@ -78,3 +82,10 @@ TESTS += $(HEX_TESTS)
> > > usr: usr.c
> > > $(CC) $(CFLAGS) -mv67t -O2 -Wno-inline-asm
> > > -Wno-expansion-to-defined $< -o $@ $(LDFLAGS)
> > >
> > > +scatter_gather: CFLAGS += -mhvx
> > > +vector_add_int: CFLAGS += -mhvx -fvectorize
> > > +hvx_misc: CFLAGS += -mhvx
> > > +hvx_histogram: CFLAGS += -mhvx -Wno-gnu-folding-constant
> > > +
> > > +hvx_histogram: hvx_histogram.c hvx_histogram_row.S
> > > + $(CC) $(CFLAGS) $(CROSS_CC_GUEST_CFLAGS) $^ -o $@
> >
> > I am not able to run check-tcg locally, hvx_histogram fails due to missing ld-
> > musl-hexagon
> >
> > TEST hvx_histogram on hexagon
> > qemu-hexagon: Could not open '/lib/ld-musl-hexagon.so.1': No such file
> or
> > directory
> >
> > --
> > Anton Johansson,
> > rev.ng Labs Srl.
>
> Strange. These are supposed to build statically. I'll investigate.
I need to add $(LDFLAGS) to the build command.
-- a/tests/tcg/hexagon/Makefile.target
+++ b/tests/tcg/hexagon/Makefile.target
@@ -88,4 +88,4 @@ hvx_misc: CFLAGS += -mhvx
hvx_histogram: CFLAGS += -mhvx -Wno-gnu-folding-constant
hvx_histogram: hvx_histogram.c hvx_histogram_row.S
- $(CC) $(CFLAGS) $(CROSS_CC_GUEST_CFLAGS) $^ -o $@
+ $(CC) $(CFLAGS) $(CROSS_CC_GUEST_CFLAGS) $^ -o $@ $(LDFLAGS)
I'll include this change in the next rev of the patch series.
Thanks,
Taylor
^ permalink raw reply [flat|nested] 36+ messages in thread
* Re: [PATCH v5 06/14] Hexagon (target/hexagon) Don't set pkt_has_store_s1 when not needed
2023-01-31 22:56 ` [PATCH v5 06/14] Hexagon (target/hexagon) Don't set pkt_has_store_s1 when not needed Taylor Simpson
@ 2023-02-16 12:46 ` Anton Johansson via
0 siblings, 0 replies; 36+ messages in thread
From: Anton Johansson via @ 2023-02-16 12:46 UTC (permalink / raw)
To: Taylor Simpson, qemu-devel
Cc: richard.henderson, philmd, ale, bcain, quic_mathbern
On 1/31/23 23:56, Taylor Simpson wrote:
> The pkt_has_store_s1 field in CPUHexagonState is only needed in generated
> helpers for scalar load instructions. See check_noshuf and mem_load[1248]
> in op_helper.c.
>
> We add logic in gen_analyze_funcs.py to set need_pkt_has_store_s1 in
> DisasContext when it is needed at runtime.
>
> Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
> ---
> target/hexagon/translate.h | 1 +
> target/hexagon/attribs_def.h.inc | 1 +
> target/hexagon/translate.c | 6 +++++-
> target/hexagon/gen_analyze_funcs.py | 5 +++++
> target/hexagon/hex_common.py | 1 +
> 5 files changed, 13 insertions(+), 1 deletion(-)
Reviewed-by: Anton Johansson <anjo@rev.ng>
^ permalink raw reply [flat|nested] 36+ messages in thread
* Re: [PATCH v5 07/14] Hexagon (target/hexagon) Analyze packet for HVX
2023-01-31 22:56 ` [PATCH v5 07/14] Hexagon (target/hexagon) Analyze packet for HVX Taylor Simpson
@ 2023-02-16 13:09 ` Anton Johansson via
0 siblings, 0 replies; 36+ messages in thread
From: Anton Johansson via @ 2023-02-16 13:09 UTC (permalink / raw)
To: Taylor Simpson, qemu-devel
Cc: richard.henderson, philmd, ale, bcain, quic_mathbern
On 1/31/23 23:56, Taylor Simpson wrote:
> Extend the analyze_<tag> functions for HVX vector and predicate writes
> Remove calls to ctx_log_vreg_write[_pair] from gen_tcg_funcs.py
> During gen_start_packet, reload the predicated HVX registers into
> fugure_VRegs and tmp_VRegs
>
> Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
> ---
> target/hexagon/translate.h | 14 ++++++++------
> target/hexagon/translate.c | 30 +++++++++++++++++++++++++++++
> target/hexagon/gen_analyze_funcs.py | 17 +++++++++++++---
> target/hexagon/gen_tcg_funcs.py | 18 -----------------
> 4 files changed, 52 insertions(+), 27 deletions(-)
Reviewed-by: Anton Johansson <anjo@rev.ng>
^ permalink raw reply [flat|nested] 36+ messages in thread
* Re: [PATCH v5 08/14] Hexagon (tests/tcg/hexagon) Update preg_alias.c
2023-01-31 22:56 ` [PATCH v5 08/14] Hexagon (tests/tcg/hexagon) Update preg_alias.c Taylor Simpson
@ 2023-02-16 13:11 ` Anton Johansson via
0 siblings, 0 replies; 36+ messages in thread
From: Anton Johansson via @ 2023-02-16 13:11 UTC (permalink / raw)
To: Taylor Simpson, qemu-devel
Cc: richard.henderson, philmd, ale, bcain, quic_mathbern
On 1/31/23 23:56, Taylor Simpson wrote:
> Add control registers (c4, c5) to clobbers list
> Made possible by new toolchain container
>
> Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
> ---
> tests/tcg/hexagon/preg_alias.c | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
Reviewed-by: Anton Johansson <anjo@rev.ng>
^ permalink raw reply [flat|nested] 36+ messages in thread
* Re: [PATCH v5 11/14] Hexagon (target/hexagon) Change subtract from zero to change sign
2023-01-31 22:56 ` [PATCH v5 11/14] Hexagon (target/hexagon) Change subtract from zero to change sign Taylor Simpson
@ 2023-02-16 13:45 ` Anton Johansson via
0 siblings, 0 replies; 36+ messages in thread
From: Anton Johansson via @ 2023-02-16 13:45 UTC (permalink / raw)
To: Taylor Simpson, qemu-devel
Cc: richard.henderson, philmd, ale, bcain, quic_mathbern
On 1/31/23 23:56, Taylor Simpson wrote:
> The F2_sffms instruction [r0 -= sfmpy(r1, r2)] doesn't properly
> handle -0. Previously we would negate the input operand by subtracting
> from zero. Instead, we negate by changing the sign bit.
>
> Test case added to tests/tcg/hexagon/fpstuff.c
>
> Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
> ---
> target/hexagon/op_helper.c | 2 +-
> tests/tcg/hexagon/fpstuff.c | 31 ++++++++++++++++++++++++++++++-
> 2 files changed, 31 insertions(+), 2 deletions(-)
Reviewed-by: Anton Johansson <anjo@rev.ng>
^ permalink raw reply [flat|nested] 36+ messages in thread
* Re: [PATCH v5 09/14] Hexagon (tests/tcg/hexagon) Remove __builtin from scatter_gather
2023-01-31 22:56 ` [PATCH v5 09/14] Hexagon (tests/tcg/hexagon) Remove __builtin from scatter_gather Taylor Simpson
@ 2023-02-16 13:46 ` Anton Johansson via
0 siblings, 0 replies; 36+ messages in thread
From: Anton Johansson via @ 2023-02-16 13:46 UTC (permalink / raw)
To: Taylor Simpson, qemu-devel
Cc: richard.henderson, philmd, ale, bcain, quic_mathbern
On 1/31/23 23:56, Taylor Simpson wrote:
> Replace __builtin_* with inline assembly
> The __builtin's are subject to change with different compiler
> releases, so might break
> Mark arrays as aligned when accessed as HVX vectors
> Clean up comments
>
> Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
> ---
> tests/tcg/hexagon/scatter_gather.c | 513 +++++++++++++++--------------
> 1 file changed, 271 insertions(+), 242 deletions(-)
Reviewed-by: Anton Johansson <anjo@rev.ng>
^ permalink raw reply [flat|nested] 36+ messages in thread
* Re: [PATCH v5 05/14] Hexagon (target/hexagon) Analyze packet before generating TCG
2023-01-31 22:56 ` [PATCH v5 05/14] Hexagon (target/hexagon) Analyze packet before generating TCG Taylor Simpson
@ 2023-02-23 17:02 ` Anton Johansson via
2023-03-02 5:01 ` Taylor Simpson
0 siblings, 1 reply; 36+ messages in thread
From: Anton Johansson via @ 2023-02-23 17:02 UTC (permalink / raw)
To: Taylor Simpson, qemu-devel
Cc: richard.henderson, philmd, ale, bcain, quic_mathbern
On 1/31/23 23:56, Taylor Simpson wrote:
> diff --git a/target/hexagon/gen_analyze_funcs.py b/target/hexagon/gen_analyze_funcs.py
> new file mode 100755
> index 0000000000..c45696bec8
> --- /dev/null
> +++ b/target/hexagon/gen_analyze_funcs.py
> @@ -0,0 +1,237 @@
> +#!/usr/bin/env python3
> +
> +##
> +## Copyright(c) 2022-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
> +##
> +## This program is free software; you can redistribute it and/or modify
> +## it under the terms of the GNU General Public License as published by
> +## the Free Software Foundation; either version 2 of the License, or
> +## (at your option) any later version.
> +##
> +## This program is distributed in the hope that it will be useful,
> +## but WITHOUT ANY WARRANTY; without even the implied warranty of
> +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> +## GNU General Public License for more details.
> +##
> +## You should have received a copy of the GNU General Public License
> +## along with this program; if not, see <http://www.gnu.org/licenses/>.
> +##
> +
> +import sys
> +import re
> +import string
> +import hex_common
> +
> +##
> +## Helpers for gen_analyze_func
> +##
> +def is_predicated(tag):
> + return 'A_CONDEXEC' in hex_common.attribdict[tag]
> +
> +def analyze_opn_old(f, tag, regtype, regid, regno):
> + regN = "%s%sN" % (regtype, regid)
> + predicated = "true" if is_predicated(tag) else "false"
> + if (regtype == "R"):
> + if (regid in {"ss", "tt"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + elif (regid in {"dd", "ee", "xx", "yy"}):
> + f.write(" const int %s = insn->regno[%d];\n" % (regN, regno))
> + f.write(" ctx_log_reg_write_pair(ctx, %s, %s);\n" % \
> + (regN, predicated))
> + elif (regid in {"s", "t", "u", "v"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + elif (regid in {"d", "e", "x", "y"}):
> + f.write(" const int %s = insn->regno[%d];\n" % (regN, regno))
> + f.write(" ctx_log_reg_write(ctx, %s, %s);\n" % \
> + (regN, predicated))
> + else:
> + print("Bad register parse: ", regtype, regid)
> + elif (regtype == "P"):
> + if (regid in {"s", "t", "u", "v"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + elif (regid in {"d", "e", "x"}):
> + f.write(" const int %s = insn->regno[%d];\n" % (regN, regno))
> + f.write(" ctx_log_pred_write(ctx, %s);\n" % (regN))
> + else:
> + print("Bad register parse: ", regtype, regid)
> + elif (regtype == "C"):
> + if (regid == "ss"):
> + f.write("// const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \
> + (regN, regno))
> + elif (regid == "dd"):
> + f.write(" const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \
> + (regN, regno))
> + f.write(" ctx_log_reg_write_pair(ctx, %s, %s);\n" % \
> + (regN, predicated))
> + elif (regid == "s"):
> + f.write("// const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \
> + (regN, regno))
> + elif (regid == "d"):
> + f.write(" const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \
> + (regN, regno))
> + f.write(" ctx_log_reg_write(ctx, %s, %s);\n" % \
> + (regN, predicated))
> + else:
> + print("Bad register parse: ", regtype, regid)
> + elif (regtype == "M"):
> + if (regid == "u"):
> + f.write("// const int %s = insn->regno[%d];\n"% \
> + (regN, regno))
> + else:
> + print("Bad register parse: ", regtype, regid)
> + elif (regtype == "V"):
> + if (regid in {"dd", "xx"}):
> + f.write("// const int %s = insn->regno[%d];\n" %\
> + (regN, regno))
> + elif (regid in {"uu", "vv"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + elif (regid in {"s", "u", "v", "w"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + elif (regid in {"d", "x", "y"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + else:
> + print("Bad register parse: ", regtype, regid)
> + elif (regtype == "Q"):
> + if (regid in {"d", "e", "x"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + elif (regid in {"s", "t", "u", "v"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + else:
> + print("Bad register parse: ", regtype, regid)
> + elif (regtype == "G"):
> + if (regid in {"dd"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + elif (regid in {"d"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + elif (regid in {"ss"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + elif (regid in {"s"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + else:
> + print("Bad register parse: ", regtype, regid)
> + elif (regtype == "S"):
> + if (regid in {"dd"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + elif (regid in {"d"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + elif (regid in {"ss"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + elif (regid in {"s"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + else:
> + print("Bad register parse: ", regtype, regid)
> + else:
> + print("Bad register parse: ", regtype, regid)
> +
> +def analyze_opn_new(f, tag, regtype, regid, regno):
> + regN = "%s%sN" % (regtype, regid)
> + if (regtype == "N"):
> + if (regid in {"s", "t"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + else:
> + print("Bad register parse: ", regtype, regid)
> + elif (regtype == "P"):
> + if (regid in {"t", "u", "v"}):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + else:
> + print("Bad register parse: ", regtype, regid)
> + elif (regtype == "O"):
> + if (regid == "s"):
> + f.write("// const int %s = insn->regno[%d];\n" % \
> + (regN, regno))
> + else:
> + print("Bad register parse: ", regtype, regid)
> + else:
> + print("Bad register parse: ", regtype, regid)
For analyze_opn_new and analyze_opn_old consider condensing the if/else
statements
since most branches are very similar. I find something like the
following more readable
def analyze_opn_old(f, tag, regtype, regid, regno):
regN = "%s%sN" % (regtype, regid)
predicated = "true" if is_predicated(tag) else "false"
pair = "_pair" if hex_common.is_pair(regid) else ""
if (regtype == "R" and regid in {"dd", "ee", "xx", "yy", "d",
"e", "x", "y"}):
f.write(" const int %s = insn->regno[%d];\n" % (regN,
regno))
f.write(" ctx_log_reg_write%s(ctx, %s, %s);\n" % (pair,
regN, predicated))
elif (regtype == "P" and regid in {"d", "e", "x"}):
f.write(" const int %s = insn->regno[%d];\n" % (regN,
regno))
f.write(" ctx_log_pred_write(ctx, %s);\n" % (regN))
elif (regtype == "C" and regid in {"d", "dd"}):
f.write(" const int %s = insn->regno[%d] +
HEX_REG_SA0;\n" % (regN, regno))
f.write(" ctx_log_reg_write%s(ctx, %s, %s);\n" % (pair,
regN, predicated))
elif (regtype == "V" and regid in {"d", "x", "y", "dd", "xx"}):
newv = "EXT_DFL"
if (hex_common.is_new_result(tag)):
newv = "EXT_NEW"
elif (hex_common.is_tmp_result(tag)):
newv = "EXT_TMP"
f.write(" const int %s = insn->regno[%d];\n" % (regN,
regno))
f.write(" ctx_log_vreg_write%s(ctx, %s, %s, %s);\n" %
(pair, regN, newv, predicated))
elif (regtype == "Q" and regid in {"d", "e", "x"}):
f.write(" const int %s = insn->regno[%d];\n" % (regN,
regno))
f.write(" ctx_log_qreg_write(ctx, %s);\n" % (regN))
elif (regtype == "M" and regid == "u" or
regtype in {"G", "S"} and regid in {"dd", "d", "ss", "s"} or
regtype in {"P", "Q"} and regid in {"s", "t", "u", "v"} or
regtype == "R" and regid in {"s", "t", "u", "v",
"ss", "tt"} or
regtype == "C" and regid in {"s", "ss"} or
regtype == "V" and regid in {"s", "u", "v", "w",
"uu", "vv"}):
f.write("// const int %s = insn->regno[%d];\n" % (regN,
regno))
else:
print("Bad register parse: ", regtype, regid)
def analyze_opn_new(f, tag, regtype, regid, regno):
regN = "%s%sN" % (regtype, regid)
if (regtype == "N" and regid in {"s", "t"} or
regtype == "P" and regid in {"t", "u", "v"} or
regtype == "O" and regid == "s"):
f.write("// const int %s = insn->regno[%d];\n" % (regN,
regno))
else:
print("Bad register parse: ", regtype, regid)
Note: the above example also includes changes made in patch 7.
Otherwise,
Reviewed-by: Anton Johansson <anjo@rev.ng>
^ permalink raw reply [flat|nested] 36+ messages in thread
* Re: [PATCH v5 12/14] Hexagon (target/hexagon) Remove gen_log_predicated_reg_write[_pair]
2023-01-31 22:56 ` [PATCH v5 12/14] Hexagon (target/hexagon) Remove gen_log_predicated_reg_write[_pair] Taylor Simpson
@ 2023-02-24 13:05 ` Anton Johansson via
2023-02-27 23:40 ` Taylor Simpson
0 siblings, 1 reply; 36+ messages in thread
From: Anton Johansson via @ 2023-02-24 13:05 UTC (permalink / raw)
To: Taylor Simpson, qemu-devel
Cc: richard.henderson, philmd, ale, bcain, quic_mathbern
On 1/31/23 23:56, Taylor Simpson wrote:
> static void gen_log_reg_write_pair(int rnum, TCGv_i64 val)
> {
> const target_ulong reg_mask_low = reg_immut_masks[rnum];
> @@ -167,6 +120,7 @@ static void gen_log_reg_write_pair(int rnum, TCGv_i64 val)
> }
>
> tcg_temp_free(val32);
> + tcg_temp_free_i64(val);
> }
>
> void gen_log_pred_write(DisasContext *ctx, int pnum, TCGv val)
> @@ -306,12 +260,14 @@ static inline void gen_write_ctrl_reg_pair(DisasContext *ctx, int reg_num,
> TCGv_i64 val)
> {
> if (reg_num == HEX_REG_P3_0_ALIASED) {
> + TCGv result = get_result_gpr(ctx, reg_num + 1);
> TCGv val32 = tcg_temp_new();
> tcg_gen_extrl_i64_i32(val32, val);
> gen_write_p3_0(ctx, val32);
> tcg_gen_extrh_i64_i32(val32, val);
> - gen_log_reg_write(reg_num + 1, val32);
> + tcg_gen_mov_tl(result, val32);
> tcg_temp_free(val32);
> + tcg_temp_free_i64(val);
> } else {
> gen_log_reg_write_pair(reg_num, val);
> if (reg_num == HEX_REG_QEMU_PKT_CNT) {
Hiding the free of a TCGv argument scares me a bit, it's bound to cause
annoying bugs down
the line, I feel.
Any reason we can't keep the frees in the same scope as allocation?
Otherwise, the patch looks good,
Reviewed-by: Anton Johansson <anjo@rev.ng>
^ permalink raw reply [flat|nested] 36+ messages in thread
* Re: [PATCH v5 13/14] Hexagon (target/hexagon) Reduce manipulation of slot_cancelled
2023-01-31 22:56 ` [PATCH v5 13/14] Hexagon (target/hexagon) Reduce manipulation of slot_cancelled Taylor Simpson
@ 2023-02-24 14:24 ` Anton Johansson via
2023-03-02 4:55 ` Taylor Simpson
0 siblings, 1 reply; 36+ messages in thread
From: Anton Johansson via @ 2023-02-24 14:24 UTC (permalink / raw)
To: Taylor Simpson, qemu-devel
Cc: richard.henderson, philmd, ale, bcain, quic_mathbern
On 1/31/23 23:56, Taylor Simpson wrote:
> /* Called during packet commit when there are two scalar stores */
> -void HELPER(probe_pkt_scalar_store_s0)(CPUHexagonState *env, int mmu_idx)
> +void HELPER(probe_pkt_scalar_store_s0)(CPUHexagonState *env, int args)
> {
> - probe_store(env, 0, mmu_idx);
> + int mmu_idx = args & 0x3;
> + bool is_predicated = (args >> 2) & 1;
> + probe_store(env, 0, mmu_idx, is_predicated);
> }
Can we use bitmasks for the fields of args?
> void HELPER(probe_hvx_stores)(CPUHexagonState *env, int mmu_idx)
> @@ -489,12 +492,14 @@ void HELPER(probe_pkt_scalar_hvx_stores)(CPUHexagonState *env, int mask,
> bool has_st0 = (mask >> 0) & 1;
> bool has_st1 = (mask >> 1) & 1;
> bool has_hvx_stores = (mask >> 2) & 1;
> + bool s0_is_pred = (mask >> 3) & 1;
> + bool s1_is_pred = (mask >> 4) & 1;
also used here
> if (has_st0) {
> - probe_store(env, 0, mmu_idx);
> + probe_store(env, 0, mmu_idx, s0_is_pred);
> }
> if (has_st1) {
> - probe_store(env, 1, mmu_idx);
> + probe_store(env, 1, mmu_idx, s1_is_pred);
> }
> if (has_hvx_stores) {
> HELPER(probe_hvx_stores)(env, mmu_idx);
> @@ -1444,12 +1449,6 @@ void HELPER(vwhist128qm)(CPUHexagonState *env, int32_t uiV)
> }
> }
>
> -void cancel_slot(CPUHexagonState *env, uint32_t slot)
> -{
> - HEX_DEBUG_LOG("Slot %d cancelled\n", slot);
> - env->slot_cancelled |= (1 << slot);
> -}
> -
> /* These macros can be referenced in the generated helper functions */
> #define warn(...) /* Nothing */
> #define fatal(...) g_assert_not_reached();
> diff --git a/target/hexagon/translate.c b/target/hexagon/translate.c
> index 53fd935db7..6ee8784910 100644
> --- a/target/hexagon/translate.c
> +++ b/target/hexagon/translate.c
> @@ -248,7 +248,16 @@ static bool check_for_attrib(Packet *pkt, int attrib)
>
> static bool need_slot_cancelled(Packet *pkt)
> {
> - return check_for_attrib(pkt, A_CONDEXEC);
> + /* We only need slot_cancelled for conditional store and HVX instructions */
> + for (int i = 0; i < pkt->num_insns; i++) {
> + uint16_t opcode = pkt->insn[i].opcode;
> + if (GET_ATTRIB(opcode, A_CONDEXEC) &&
> + (GET_ATTRIB(opcode, A_STORE) ||
> + GET_ATTRIB(opcode, A_CVI))) {
> + return true;
> + }
> + }
> + return false;
> }
>
> static bool need_pred_written(Packet *pkt)
> @@ -860,6 +869,12 @@ static void gen_commit_packet(DisasContext *ctx)
> if (has_hvx_store) {
> mask |= (1 << 2);
> }
> + if (has_store_s0 && slot_is_predicated(pkt, 0)) {
> + mask |= (1 << 3);
> + }
> + if (has_store_s1 && slot_is_predicated(pkt, 1)) {
> + mask |= (1 << 4);
> + }
> mask_tcgv = tcg_constant_tl(mask);
> gen_helper_probe_pkt_scalar_hvx_stores(cpu_env, mask_tcgv, mem_idx);
> }
and here
> @@ -868,8 +883,12 @@ static void gen_commit_packet(DisasContext *ctx)
> * process_store_log will execute the slot 1 store first,
> * so we only have to probe the store in slot 0
> */
> - TCGv mem_idx = tcg_constant_tl(ctx->mem_idx);
> - gen_helper_probe_pkt_scalar_store_s0(cpu_env, mem_idx);
> + int args = ctx->mem_idx;
> + if (slot_is_predicated(pkt, 0)) {
> + args |= (1 << 2);
> + }
> + TCGv args_tcgv = tcg_constant_tl(args);
> + gen_helper_probe_pkt_scalar_store_s0(cpu_env, args_tcgv);
> }
and here
Otherwise,
Reviewed-by: Anton Johansson <anjo@rev.ng>
^ permalink raw reply [flat|nested] 36+ messages in thread
* Re: [PATCH v5 14/14] Hexagon (target/hexagon) Improve code gen for predicated HVX instructions
2023-01-31 22:56 ` [PATCH v5 14/14] Hexagon (target/hexagon) Improve code gen for predicated HVX instructions Taylor Simpson
@ 2023-02-24 14:30 ` Anton Johansson via
0 siblings, 0 replies; 36+ messages in thread
From: Anton Johansson via @ 2023-02-24 14:30 UTC (permalink / raw)
To: Taylor Simpson, qemu-devel
Cc: richard.henderson, philmd, ale, bcain, quic_mathbern
On 1/31/23 23:56, Taylor Simpson wrote:
> The following improvements are made for predicated HVX instructions
> During gen_commit_hvx, unconditionally move the "new" value into
> the dest
> Don't set slot_cancelled
> Remove runtime bookkeeping of which registers were updated
> Reduce the cases where gen_log_vreg_write[_pair] is called
> It's only needed for special operands VxxV and VyV
> Remove gen_log_qreg_write
>
> Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
> ---
> target/hexagon/cpu.h | 5 +--
> target/hexagon/gen_tcg_hvx.h | 17 +-------
> target/hexagon/translate.h | 16 +++-----
> target/hexagon/genptr.c | 50 +++---------------------
> target/hexagon/translate.c | 60 +++--------------------------
> target/hexagon/README | 28 ++++----------
> target/hexagon/gen_analyze_funcs.py | 3 +-
> target/hexagon/gen_tcg_funcs.py | 35 ++++-------------
> 8 files changed, 37 insertions(+), 177 deletions(-)
Reviewed-by: Anton Johansson <anjo@rev.ng>
^ permalink raw reply [flat|nested] 36+ messages in thread
* RE: [PATCH v5 12/14] Hexagon (target/hexagon) Remove gen_log_predicated_reg_write[_pair]
2023-02-24 13:05 ` Anton Johansson via
@ 2023-02-27 23:40 ` Taylor Simpson
0 siblings, 0 replies; 36+ messages in thread
From: Taylor Simpson @ 2023-02-27 23:40 UTC (permalink / raw)
To: anjo, qemu-devel
Cc: richard.henderson, philmd, ale, Brian Cain, Matheus Bernardino (QUIC)
> -----Original Message-----
> From: Anton Johansson <anjo@rev.ng>
> Sent: Friday, February 24, 2023 6:06 AM
> To: Taylor Simpson <tsimpson@quicinc.com>; qemu-devel@nongnu.org
> Cc: richard.henderson@linaro.org; philmd@linaro.org; ale@rev.ng; Brian Cain
> <bcain@quicinc.com>; Matheus Bernardino (QUIC)
> <quic_mathbern@quicinc.com>
> Subject: Re: [PATCH v5 12/14] Hexagon (target/hexagon) Remove
> gen_log_predicated_reg_write[_pair]
>
> On 1/31/23 23:56, Taylor Simpson wrote:
> > static void gen_log_reg_write_pair(int rnum, TCGv_i64 val)
> > {
> > const target_ulong reg_mask_low = reg_immut_masks[rnum]; @@
> > -167,6 +120,7 @@ static void gen_log_reg_write_pair(int rnum, TCGv_i64
> val)
> > }
> >
> > tcg_temp_free(val32);
> > + tcg_temp_free_i64(val);
> > }
> >
> > void gen_log_pred_write(DisasContext *ctx, int pnum, TCGv val) @@
> > -306,12 +260,14 @@ static inline void
> gen_write_ctrl_reg_pair(DisasContext *ctx, int reg_num,
> > TCGv_i64 val)
> > {
> > if (reg_num == HEX_REG_P3_0_ALIASED) {
> > + TCGv result = get_result_gpr(ctx, reg_num + 1);
> > TCGv val32 = tcg_temp_new();
> > tcg_gen_extrl_i64_i32(val32, val);
> > gen_write_p3_0(ctx, val32);
> > tcg_gen_extrh_i64_i32(val32, val);
> > - gen_log_reg_write(reg_num + 1, val32);
> > + tcg_gen_mov_tl(result, val32);
> > tcg_temp_free(val32);
> > + tcg_temp_free_i64(val);
> > } else {
> > gen_log_reg_write_pair(reg_num, val);
> > if (reg_num == HEX_REG_QEMU_PKT_CNT) {
>
> Hiding the free of a TCGv argument scares me a bit, it's bound to cause
> annoying bugs down the line, I feel.
>
> Any reason we can't keep the frees in the same scope as allocation?
The only ones that need to be free'd are the pairs. Those are created by get_result_gpr_pair, so I'm using the gen_log_reg_write_pair function as the central place to free them.
Also, Richard Henderson is working on a patch series that will eliminate the need for all free's 😊
>
> Otherwise, the patch looks good,
>
> Reviewed-by: Anton Johansson <anjo@rev.ng>
^ permalink raw reply [flat|nested] 36+ messages in thread
* RE: [PATCH v5 13/14] Hexagon (target/hexagon) Reduce manipulation of slot_cancelled
2023-02-24 14:24 ` Anton Johansson via
@ 2023-03-02 4:55 ` Taylor Simpson
0 siblings, 0 replies; 36+ messages in thread
From: Taylor Simpson @ 2023-03-02 4:55 UTC (permalink / raw)
To: anjo, qemu-devel
Cc: richard.henderson, philmd, ale, Brian Cain, Matheus Bernardino (QUIC)
> -----Original Message-----
> From: Anton Johansson <anjo@rev.ng>
> Sent: Friday, February 24, 2023 7:24 AM
> To: Taylor Simpson <tsimpson@quicinc.com>; qemu-devel@nongnu.org
> Cc: richard.henderson@linaro.org; philmd@linaro.org; ale@rev.ng; Brian Cain
> <bcain@quicinc.com>; Matheus Bernardino (QUIC)
> <quic_mathbern@quicinc.com>
> Subject: Re: [PATCH v5 13/14] Hexagon (target/hexagon) Reduce
> manipulation of slot_cancelled
>
> On 1/31/23 23:56, Taylor Simpson wrote:
> > /* Called during packet commit when there are two scalar stores */
> > -void HELPER(probe_pkt_scalar_store_s0)(CPUHexagonState *env, int
> > mmu_idx)
> > +void HELPER(probe_pkt_scalar_store_s0)(CPUHexagonState *env, int
> > +args)
> > {
> > - probe_store(env, 0, mmu_idx);
> > + int mmu_idx = args & 0x3;
> > + bool is_predicated = (args >> 2) & 1;
> > + probe_store(env, 0, mmu_idx, is_predicated);
> > }
> Can we use bitmasks for the fields of args?
OK, but better to use "hw/registerfields.h".
Thanks,
Taylor
^ permalink raw reply [flat|nested] 36+ messages in thread
* RE: [PATCH v5 05/14] Hexagon (target/hexagon) Analyze packet before generating TCG
2023-02-23 17:02 ` Anton Johansson via
@ 2023-03-02 5:01 ` Taylor Simpson
0 siblings, 0 replies; 36+ messages in thread
From: Taylor Simpson @ 2023-03-02 5:01 UTC (permalink / raw)
To: anjo, qemu-devel
Cc: richard.henderson, philmd, ale, Brian Cain, Matheus Bernardino (QUIC)
> -----Original Message-----
> From: Anton Johansson <anjo@rev.ng>
> Sent: Thursday, February 23, 2023 10:02 AM
> To: Taylor Simpson <tsimpson@quicinc.com>; qemu-devel@nongnu.org
> Cc: richard.henderson@linaro.org; philmd@linaro.org; ale@rev.ng; Brian Cain
> <bcain@quicinc.com>; Matheus Bernardino (QUIC)
> <quic_mathbern@quicinc.com>
> Subject: Re: [PATCH v5 05/14] Hexagon (target/hexagon) Analyze packet
> before generating TCG
>
> On 1/31/23 23:56, Taylor Simpson wrote:
> > diff --git a/target/hexagon/gen_analyze_funcs.py
> > b/target/hexagon/gen_analyze_funcs.py
> > new file mode 100755
> > index 0000000000..c45696bec8
> > --- /dev/null
> > +++ b/target/hexagon/gen_analyze_funcs.py
> > @@ -0,0 +1,237 @@
> > +#!/usr/bin/env python3
> > +
> > +##
> > +## Copyright(c) 2022-2023 Qualcomm Innovation Center, Inc. All Rights
> Reserved.
> > +##
> > +## This program is free software; you can redistribute it and/or
> > +modify ## it under the terms of the GNU General Public License as
> > +published by ## the Free Software Foundation; either version 2 of
> > +the License, or ## (at your option) any later version.
> > +##
> > +## This program is distributed in the hope that it will be useful,
> > +## but WITHOUT ANY WARRANTY; without even the implied warranty of
> ##
> > +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ##
> GNU
> > +General Public License for more details.
> > +##
> > +## You should have received a copy of the GNU General Public License
> > +## along with this program; if not, see <http://www.gnu.org/licenses/>.
> > +##
> > +
> > +import sys
> > +import re
> > +import string
> > +import hex_common
> > +
> > +##
> > +## Helpers for gen_analyze_func
> > +##
> > +def is_predicated(tag):
> > + return 'A_CONDEXEC' in hex_common.attribdict[tag]
> > +
> > +def analyze_opn_old(f, tag, regtype, regid, regno):
> > + regN = "%s%sN" % (regtype, regid)
> > + predicated = "true" if is_predicated(tag) else "false"
> > + if (regtype == "R"):
> > + if (regid in {"ss", "tt"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + elif (regid in {"dd", "ee", "xx", "yy"}):
> > + f.write(" const int %s = insn->regno[%d];\n" % (regN, regno))
> > + f.write(" ctx_log_reg_write_pair(ctx, %s, %s);\n" % \
> > + (regN, predicated))
> > + elif (regid in {"s", "t", "u", "v"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + elif (regid in {"d", "e", "x", "y"}):
> > + f.write(" const int %s = insn->regno[%d];\n" % (regN, regno))
> > + f.write(" ctx_log_reg_write(ctx, %s, %s);\n" % \
> > + (regN, predicated))
> > + else:
> > + print("Bad register parse: ", regtype, regid)
> > + elif (regtype == "P"):
> > + if (regid in {"s", "t", "u", "v"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + elif (regid in {"d", "e", "x"}):
> > + f.write(" const int %s = insn->regno[%d];\n" % (regN, regno))
> > + f.write(" ctx_log_pred_write(ctx, %s);\n" % (regN))
> > + else:
> > + print("Bad register parse: ", regtype, regid)
> > + elif (regtype == "C"):
> > + if (regid == "ss"):
> > + f.write("// const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \
> > + (regN, regno))
> > + elif (regid == "dd"):
> > + f.write(" const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \
> > + (regN, regno))
> > + f.write(" ctx_log_reg_write_pair(ctx, %s, %s);\n" % \
> > + (regN, predicated))
> > + elif (regid == "s"):
> > + f.write("// const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \
> > + (regN, regno))
> > + elif (regid == "d"):
> > + f.write(" const int %s = insn->regno[%d] + HEX_REG_SA0;\n" % \
> > + (regN, regno))
> > + f.write(" ctx_log_reg_write(ctx, %s, %s);\n" % \
> > + (regN, predicated))
> > + else:
> > + print("Bad register parse: ", regtype, regid)
> > + elif (regtype == "M"):
> > + if (regid == "u"):
> > + f.write("// const int %s = insn->regno[%d];\n"% \
> > + (regN, regno))
> > + else:
> > + print("Bad register parse: ", regtype, regid)
> > + elif (regtype == "V"):
> > + if (regid in {"dd", "xx"}):
> > + f.write("// const int %s = insn->regno[%d];\n" %\
> > + (regN, regno))
> > + elif (regid in {"uu", "vv"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + elif (regid in {"s", "u", "v", "w"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + elif (regid in {"d", "x", "y"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + else:
> > + print("Bad register parse: ", regtype, regid)
> > + elif (regtype == "Q"):
> > + if (regid in {"d", "e", "x"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + elif (regid in {"s", "t", "u", "v"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + else:
> > + print("Bad register parse: ", regtype, regid)
> > + elif (regtype == "G"):
> > + if (regid in {"dd"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + elif (regid in {"d"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + elif (regid in {"ss"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + elif (regid in {"s"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + else:
> > + print("Bad register parse: ", regtype, regid)
> > + elif (regtype == "S"):
> > + if (regid in {"dd"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + elif (regid in {"d"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + elif (regid in {"ss"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + elif (regid in {"s"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + else:
> > + print("Bad register parse: ", regtype, regid)
> > + else:
> > + print("Bad register parse: ", regtype, regid)
> > +
> > +def analyze_opn_new(f, tag, regtype, regid, regno):
> > + regN = "%s%sN" % (regtype, regid)
> > + if (regtype == "N"):
> > + if (regid in {"s", "t"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + else:
> > + print("Bad register parse: ", regtype, regid)
> > + elif (regtype == "P"):
> > + if (regid in {"t", "u", "v"}):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + else:
> > + print("Bad register parse: ", regtype, regid)
> > + elif (regtype == "O"):
> > + if (regid == "s"):
> > + f.write("// const int %s = insn->regno[%d];\n" % \
> > + (regN, regno))
> > + else:
> > + print("Bad register parse: ", regtype, regid)
> > + else:
> > + print("Bad register parse: ", regtype, regid)
>
> For analyze_opn_new and analyze_opn_old consider condensing the if/else
> statements since most branches are very similar. I find something like the
> following more readable
>
> def analyze_opn_old(f, tag, regtype, regid, regno):
> regN = "%s%sN" % (regtype, regid)
> predicated = "true" if is_predicated(tag) else "false"
> pair = "_pair" if hex_common.is_pair(regid) else ""
> if (regtype == "R" and regid in {"dd", "ee", "xx", "yy", "d", "e", "x", "y"}):
> f.write(" const int %s = insn->regno[%d];\n" % (regN,
> regno))
> f.write(" ctx_log_reg_write%s(ctx, %s, %s);\n" % (pair, regN,
> predicated))
> elif (regtype == "P" and regid in {"d", "e", "x"}):
> f.write(" const int %s = insn->regno[%d];\n" % (regN,
> regno))
> f.write(" ctx_log_pred_write(ctx, %s);\n" % (regN))
> elif (regtype == "C" and regid in {"d", "dd"}):
> f.write(" const int %s = insn->regno[%d] + HEX_REG_SA0;\n" %
> (regN, regno))
> f.write(" ctx_log_reg_write%s(ctx, %s, %s);\n" % (pair, regN,
> predicated))
> elif (regtype == "V" and regid in {"d", "x", "y", "dd", "xx"}):
> newv = "EXT_DFL"
> if (hex_common.is_new_result(tag)):
> newv = "EXT_NEW"
> elif (hex_common.is_tmp_result(tag)):
> newv = "EXT_TMP"
> f.write(" const int %s = insn->regno[%d];\n" % (regN,
> regno))
> f.write(" ctx_log_vreg_write%s(ctx, %s, %s, %s);\n" % (pair, regN,
> newv, predicated))
> elif (regtype == "Q" and regid in {"d", "e", "x"}):
> f.write(" const int %s = insn->regno[%d];\n" % (regN,
> regno))
> f.write(" ctx_log_qreg_write(ctx, %s);\n" % (regN))
> elif (regtype == "M" and regid == "u" or
> regtype in {"G", "S"} and regid in {"dd", "d", "ss", "s"} or
> regtype in {"P", "Q"} and regid in {"s", "t", "u", "v"} or
> regtype == "R" and regid in {"s", "t", "u", "v", "ss", "tt"} or
> regtype == "C" and regid in {"s", "ss"} or
> regtype == "V" and regid in {"s", "u", "v", "w", "uu", "vv"}):
> f.write("// const int %s = insn->regno[%d];\n" % (regN,
> regno))
> else:
> print("Bad register parse: ", regtype, regid)
>
> def analyze_opn_new(f, tag, regtype, regid, regno):
> regN = "%s%sN" % (regtype, regid)
> if (regtype == "N" and regid in {"s", "t"} or
> regtype == "P" and regid in {"t", "u", "v"} or
> regtype == "O" and regid == "s"):
> f.write("// const int %s = insn->regno[%d];\n" % (regN,
> regno))
> else:
> print("Bad register parse: ", regtype, regid)
That might make sense now, but I wrote it that way to make room in the future for further analysis. For example, I'll mark register reads in addition to register writes. So it will be important to have separate points in the if-then-else.
Thanks,
Taylor
^ permalink raw reply [flat|nested] 36+ messages in thread
* Re: [PATCH v5 10/14] Hexagon (tests/tcg/hexagon) Enable HVX tests
2023-02-08 20:29 ` Taylor Simpson
@ 2023-03-03 15:46 ` Anton Johansson via
0 siblings, 0 replies; 36+ messages in thread
From: Anton Johansson via @ 2023-03-03 15:46 UTC (permalink / raw)
To: Taylor Simpson, qemu-devel
Cc: richard.henderson, philmd, ale, Brian Cain, Matheus Bernardino (QUIC)
On 2/8/23 21:29, Taylor Simpson wrote:
> I need to add $(LDFLAGS) to the build command.
> -- a/tests/tcg/hexagon/Makefile.target
> +++ b/tests/tcg/hexagon/Makefile.target
> @@ -88,4 +88,4 @@ hvx_misc: CFLAGS += -mhvx
> hvx_histogram: CFLAGS += -mhvx -Wno-gnu-folding-constant
>
> hvx_histogram: hvx_histogram.c hvx_histogram_row.S
> - $(CC) $(CFLAGS) $(CROSS_CC_GUEST_CFLAGS) $^ -o $@
> + $(CC) $(CFLAGS) $(CROSS_CC_GUEST_CFLAGS) $^ -o $@ $(LDFLAGS)
>
>
> I'll include this change in the next rev of the patch series.
>
> Thanks,
> Taylor
Reviewed-by: Anton Johansson <anjo@rev.ng>
^ permalink raw reply [flat|nested] 36+ messages in thread
end of thread, other threads:[~2023-03-03 15:47 UTC | newest]
Thread overview: 36+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-01-31 22:56 [PATCH v5 00/14] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
2023-01-31 22:56 ` [PATCH v5 01/14] Hexagon (target/hexagon) Add overrides for jumpr31 instructions Taylor Simpson
2023-02-01 12:05 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 02/14] Hexagon (target/hexagon) Add overrides for callr Taylor Simpson
2023-02-01 12:08 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 03/14] Hexagon (target/hexagon) Add overrides for endloop1/endloop01 Taylor Simpson
2023-02-01 12:29 ` Anton Johansson via
2023-02-01 18:43 ` Taylor Simpson
2023-01-31 22:56 ` [PATCH v5 04/14] Hexagon (target/hexagon) Add overrides for dealloc-return instructions Taylor Simpson
2023-02-01 13:04 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 05/14] Hexagon (target/hexagon) Analyze packet before generating TCG Taylor Simpson
2023-02-23 17:02 ` Anton Johansson via
2023-03-02 5:01 ` Taylor Simpson
2023-01-31 22:56 ` [PATCH v5 06/14] Hexagon (target/hexagon) Don't set pkt_has_store_s1 when not needed Taylor Simpson
2023-02-16 12:46 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 07/14] Hexagon (target/hexagon) Analyze packet for HVX Taylor Simpson
2023-02-16 13:09 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 08/14] Hexagon (tests/tcg/hexagon) Update preg_alias.c Taylor Simpson
2023-02-16 13:11 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 09/14] Hexagon (tests/tcg/hexagon) Remove __builtin from scatter_gather Taylor Simpson
2023-02-16 13:46 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 10/14] Hexagon (tests/tcg/hexagon) Enable HVX tests Taylor Simpson
2023-02-08 12:54 ` Anton Johansson via
2023-02-08 15:18 ` Taylor Simpson
2023-02-08 20:29 ` Taylor Simpson
2023-03-03 15:46 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 11/14] Hexagon (target/hexagon) Change subtract from zero to change sign Taylor Simpson
2023-02-16 13:45 ` Anton Johansson via
2023-01-31 22:56 ` [PATCH v5 12/14] Hexagon (target/hexagon) Remove gen_log_predicated_reg_write[_pair] Taylor Simpson
2023-02-24 13:05 ` Anton Johansson via
2023-02-27 23:40 ` Taylor Simpson
2023-01-31 22:56 ` [PATCH v5 13/14] Hexagon (target/hexagon) Reduce manipulation of slot_cancelled Taylor Simpson
2023-02-24 14:24 ` Anton Johansson via
2023-03-02 4:55 ` Taylor Simpson
2023-01-31 22:56 ` [PATCH v5 14/14] Hexagon (target/hexagon) Improve code gen for predicated HVX instructions Taylor Simpson
2023-02-24 14:30 ` Anton Johansson via
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