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From: LIU Zhiwei <zhiwei_liu@c-sky.com>
To: richard.henderson@linaro.org, alistair23@gmail.com,
	chihmin.chao@sifive.com, palmer@dabbelt.com
Cc: guoren@linux.alibaba.com, qemu-riscv@nongnu.org,
	qemu-devel@nongnu.org, wxy194768@alibaba-inc.com,
	wenmeng_zhang@c-sky.com, LIU Zhiwei <zhiwei_liu@c-sky.com>
Subject: [PATCH v6 40/61] target/riscv: vector floating-point classify instructions
Date: Tue, 17 Mar 2020 23:06:32 +0800
Message-ID: <20200317150653.9008-41-zhiwei_liu@c-sky.com> (raw)
In-Reply-To: <20200317150653.9008-1-zhiwei_liu@c-sky.com>

Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
---
 target/riscv/fpu_helper.c               | 33 +--------
 target/riscv/helper.h                   |  4 ++
 target/riscv/insn32.decode              |  1 +
 target/riscv/insn_trans/trans_rvv.inc.c |  3 +
 target/riscv/internals.h                |  5 ++
 target/riscv/vector_helper.c            | 93 +++++++++++++++++++++++++
 6 files changed, 109 insertions(+), 30 deletions(-)

diff --git a/target/riscv/fpu_helper.c b/target/riscv/fpu_helper.c
index 0b79562a69..4379756dc4 100644
--- a/target/riscv/fpu_helper.c
+++ b/target/riscv/fpu_helper.c
@@ -22,6 +22,7 @@
 #include "exec/exec-all.h"
 #include "exec/helper-proto.h"
 #include "fpu/softfloat.h"
+#include "internals.h"
 
 target_ulong riscv_cpu_get_fflags(CPURISCVState *env)
 {
@@ -230,21 +231,7 @@ uint64_t helper_fcvt_s_lu(CPURISCVState *env, uint64_t rs1)
 
 target_ulong helper_fclass_s(uint64_t frs1)
 {
-    float32 f = frs1;
-    bool sign = float32_is_neg(f);
-
-    if (float32_is_infinity(f)) {
-        return sign ? 1 << 0 : 1 << 7;
-    } else if (float32_is_zero(f)) {
-        return sign ? 1 << 3 : 1 << 4;
-    } else if (float32_is_zero_or_denormal(f)) {
-        return sign ? 1 << 2 : 1 << 5;
-    } else if (float32_is_any_nan(f)) {
-        float_status s = { }; /* for snan_bit_is_one */
-        return float32_is_quiet_nan(f, &s) ? 1 << 9 : 1 << 8;
-    } else {
-        return sign ? 1 << 1 : 1 << 6;
-    }
+    return fclass_s(frs1);
 }
 
 uint64_t helper_fadd_d(CPURISCVState *env, uint64_t frs1, uint64_t frs2)
@@ -353,19 +340,5 @@ uint64_t helper_fcvt_d_lu(CPURISCVState *env, uint64_t rs1)
 
 target_ulong helper_fclass_d(uint64_t frs1)
 {
-    float64 f = frs1;
-    bool sign = float64_is_neg(f);
-
-    if (float64_is_infinity(f)) {
-        return sign ? 1 << 0 : 1 << 7;
-    } else if (float64_is_zero(f)) {
-        return sign ? 1 << 3 : 1 << 4;
-    } else if (float64_is_zero_or_denormal(f)) {
-        return sign ? 1 << 2 : 1 << 5;
-    } else if (float64_is_any_nan(f)) {
-        float_status s = { }; /* for snan_bit_is_one */
-        return float64_is_quiet_nan(f, &s) ? 1 << 9 : 1 << 8;
-    } else {
-        return sign ? 1 << 1 : 1 << 6;
-    }
+    return fclass_d(frs1);
 }
diff --git a/target/riscv/helper.h b/target/riscv/helper.h
index 74a2ad897f..93914fc7c4 100644
--- a/target/riscv/helper.h
+++ b/target/riscv/helper.h
@@ -986,3 +986,7 @@ DEF_HELPER_6(vmford_vv_d, void, ptr, ptr, ptr, ptr, env, i32)
 DEF_HELPER_6(vmford_vf_h, void, ptr, ptr, i64, ptr, env, i32)
 DEF_HELPER_6(vmford_vf_w, void, ptr, ptr, i64, ptr, env, i32)
 DEF_HELPER_6(vmford_vf_d, void, ptr, ptr, i64, ptr, env, i32)
+
+DEF_HELPER_5(vfclass_v_h, void, ptr, ptr, ptr, env, i32)
+DEF_HELPER_5(vfclass_v_w, void, ptr, ptr, ptr, env, i32)
+DEF_HELPER_5(vfclass_v_d, void, ptr, ptr, ptr, env, i32)
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index b0f1c54d53..23e80fe954 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -512,6 +512,7 @@ vmfgt_vf        011101 . ..... ..... 101 ..... 1010111 @r_vm
 vmfge_vf        011111 . ..... ..... 101 ..... 1010111 @r_vm
 vmford_vv       011010 . ..... ..... 001 ..... 1010111 @r_vm
 vmford_vf       011010 . ..... ..... 101 ..... 1010111 @r_vm
+vfclass_v       100011 . ..... 10000 001 ..... 1010111 @r2_vm
 
 vsetvli         0 ........... ..... 111 ..... 1010111  @r2_zimm
 vsetvl          1000000 ..... ..... 111 ..... 1010111  @r
diff --git a/target/riscv/insn_trans/trans_rvv.inc.c b/target/riscv/insn_trans/trans_rvv.inc.c
index 6bf4bd1e98..b7327a2972 100644
--- a/target/riscv/insn_trans/trans_rvv.inc.c
+++ b/target/riscv/insn_trans/trans_rvv.inc.c
@@ -2033,3 +2033,6 @@ GEN_OPFVF_TRANS(vmfle_vf, opfvf_cmp_check)
 GEN_OPFVF_TRANS(vmfgt_vf, opfvf_cmp_check)
 GEN_OPFVF_TRANS(vmfge_vf, opfvf_cmp_check)
 GEN_OPFVF_TRANS(vmford_vf, opfvf_cmp_check)
+
+/* Vector Floating-Point Classify Instruction */
+GEN_OPFV_TRANS(vfclass_v, opfv_check)
diff --git a/target/riscv/internals.h b/target/riscv/internals.h
index 6a27d7c716..c9dc2d682a 100644
--- a/target/riscv/internals.h
+++ b/target/riscv/internals.h
@@ -27,4 +27,9 @@ FIELD(VDATA, VM, 8, 1)
 FIELD(VDATA, LMUL, 9, 2)
 FIELD(VDATA, NF, 11, 4)
 FIELD(VDATA, WD, 11, 1)
+
+/* float point classify helpers */
+target_ulong fclass_h(uint64_t frs1);
+target_ulong fclass_s(uint64_t frs1);
+target_ulong fclass_d(uint64_t frs1);
 #endif
diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
index 70bb51b6a8..c1a0d14ea8 100644
--- a/target/riscv/vector_helper.c
+++ b/target/riscv/vector_helper.c
@@ -4053,3 +4053,96 @@ GEN_VEXT_CMP_VV_ENV(vmford_vv_d, uint64_t, H8, !float64_unordered_quiet)
 GEN_VEXT_CMP_VF(vmford_vf_h, uint16_t, H2, !float16_unordered_quiet)
 GEN_VEXT_CMP_VF(vmford_vf_w, uint32_t, H4, !float32_unordered_quiet)
 GEN_VEXT_CMP_VF(vmford_vf_d, uint64_t, H8, !float64_unordered_quiet)
+
+/* Vector Floating-Point Classify Instruction */
+#define OPIVV1(NAME, TD, T2, TX2, HD, HS2, OP)         \
+static void do_##NAME(void *vd, void *vs2, int i)      \
+{                                                      \
+    TX2 s2 = *((T2 *)vs2 + HS2(i));                    \
+    *((TD *)vd + HD(i)) = OP(s2);                      \
+}
+
+#define GEN_VEXT_V(NAME, ESZ, DSZ, CLEAR_FN)           \
+void HELPER(NAME)(void *vd, void *v0, void *vs2,       \
+        CPURISCVState *env, uint32_t desc)             \
+{                                                      \
+    uint32_t vlmax = vext_maxsz(desc) / ESZ;           \
+    uint32_t mlen = vext_mlen(desc);                   \
+    uint32_t vm = vext_vm(desc);                       \
+    uint32_t vl = env->vl;                             \
+    uint32_t i;                                        \
+    if (vl == 0) {                                     \
+        return;                                        \
+    }                                                  \
+    for (i = 0; i < vl; i++) {                         \
+        if (!vm && !vext_elem_mask(v0, mlen, i)) {     \
+            continue;                                  \
+        }                                              \
+        do_##NAME(vd, vs2, i);                         \
+    }                                                  \
+    CLEAR_FN(vd, vl, vl * DSZ,  vlmax * DSZ);          \
+}
+
+target_ulong fclass_h(uint64_t frs1)
+{
+    float16 f = frs1;
+    bool sign = float16_is_neg(f);
+
+    if (float16_is_infinity(f)) {
+        return sign ? 1 << 0 : 1 << 7;
+    } else if (float16_is_zero(f)) {
+        return sign ? 1 << 3 : 1 << 4;
+    } else if (float16_is_zero_or_denormal(f)) {
+        return sign ? 1 << 2 : 1 << 5;
+    } else if (float16_is_any_nan(f)) {
+        float_status s = { }; /* for snan_bit_is_one */
+        return float16_is_quiet_nan(f, &s) ? 1 << 9 : 1 << 8;
+    } else {
+        return sign ? 1 << 1 : 1 << 6;
+    }
+}
+
+target_ulong fclass_s(uint64_t frs1)
+{
+    float32 f = frs1;
+    bool sign = float32_is_neg(f);
+
+    if (float32_is_infinity(f)) {
+        return sign ? 1 << 0 : 1 << 7;
+    } else if (float32_is_zero(f)) {
+        return sign ? 1 << 3 : 1 << 4;
+    } else if (float32_is_zero_or_denormal(f)) {
+        return sign ? 1 << 2 : 1 << 5;
+    } else if (float32_is_any_nan(f)) {
+        float_status s = { }; /* for snan_bit_is_one */
+        return float32_is_quiet_nan(f, &s) ? 1 << 9 : 1 << 8;
+    } else {
+        return sign ? 1 << 1 : 1 << 6;
+    }
+}
+
+target_ulong fclass_d(uint64_t frs1)
+{
+    float64 f = frs1;
+    bool sign = float64_is_neg(f);
+
+    if (float64_is_infinity(f)) {
+        return sign ? 1 << 0 : 1 << 7;
+    } else if (float64_is_zero(f)) {
+        return sign ? 1 << 3 : 1 << 4;
+    } else if (float64_is_zero_or_denormal(f)) {
+        return sign ? 1 << 2 : 1 << 5;
+    } else if (float64_is_any_nan(f)) {
+        float_status s = { }; /* for snan_bit_is_one */
+        return float64_is_quiet_nan(f, &s) ? 1 << 9 : 1 << 8;
+    } else {
+        return sign ? 1 << 1 : 1 << 6;
+    }
+}
+
+RVVCALL(OPIVV1, vfclass_v_h, OP_UU_H, H2, H2, fclass_h)
+RVVCALL(OPIVV1, vfclass_v_w, OP_UU_W, H4, H4, fclass_s)
+RVVCALL(OPIVV1, vfclass_v_d, OP_UU_D, H8, H8, fclass_d)
+GEN_VEXT_V(vfclass_v_h, 2, 2, clearh)
+GEN_VEXT_V(vfclass_v_w, 4, 4, clearl)
+GEN_VEXT_V(vfclass_v_d, 8, 8, clearq)
-- 
2.23.0



  parent reply index

Thread overview: 120+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-17 15:05 [PATCH v6 00/61] target/riscv: support vector extension v0.7.1 LIU Zhiwei
2020-03-17 15:05 ` [PATCH v6 01/61] target/riscv: add vector extension field in CPURISCVState LIU Zhiwei
2020-03-17 15:05 ` [PATCH v6 02/61] target/riscv: implementation-defined constant parameters LIU Zhiwei
2020-03-17 15:05 ` [PATCH v6 03/61] target/riscv: support vector extension csr LIU Zhiwei
2020-03-17 15:05 ` [PATCH v6 04/61] target/riscv: add vector configure instruction LIU Zhiwei
2020-03-23  6:51   ` Kito Cheng
2020-03-23  7:10     ` LIU Zhiwei
2020-03-17 15:05 ` [PATCH v6 05/61] target/riscv: add an internals.h header LIU Zhiwei
2020-03-18 23:45   ` Alistair Francis
2020-03-27 23:41   ` Richard Henderson
2020-03-17 15:05 ` [PATCH v6 06/61] target/riscv: add vector stride load and store instructions LIU Zhiwei
2020-03-18 23:54   ` Alistair Francis
2020-03-17 15:05 ` [PATCH v6 07/61] target/riscv: add vector index " LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 08/61] target/riscv: add fault-only-first unit stride load LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 09/61] target/riscv: add vector amo operations LIU Zhiwei
2020-03-19 17:01   ` Alistair Francis
2020-03-27 23:44   ` Richard Henderson
2020-03-17 15:06 ` [PATCH v6 10/61] target/riscv: vector single-width integer add and subtract LIU Zhiwei
2020-03-20 18:31   ` Alistair Francis
2020-03-27 23:54   ` Richard Henderson
2020-03-28 14:42     ` LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 11/61] target/riscv: vector widening " LIU Zhiwei
2020-03-19 16:28   ` Alistair Francis
2020-03-17 15:06 ` [PATCH v6 12/61] target/riscv: vector integer add-with-carry / subtract-with-borrow instructions LIU Zhiwei
2020-03-19 17:29   ` Alistair Francis
2020-03-28  0:00   ` Richard Henderson
2020-03-17 15:06 ` [PATCH v6 13/61] target/riscv: vector bitwise logical instructions LIU Zhiwei
2020-03-20 18:34   ` Alistair Francis
2020-03-17 15:06 ` [PATCH v6 14/61] target/riscv: vector single-width bit shift instructions LIU Zhiwei
2020-03-19 20:10   ` Alistair Francis
2020-03-17 15:06 ` [PATCH v6 15/61] target/riscv: vector narrowing integer right " LIU Zhiwei
2020-03-20 18:43   ` Alistair Francis
2020-03-17 15:06 ` [PATCH v6 16/61] target/riscv: vector integer comparison instructions LIU Zhiwei
2020-03-25 17:32   ` Alistair Francis
2020-03-17 15:06 ` [PATCH v6 17/61] target/riscv: vector integer min/max instructions LIU Zhiwei
2020-03-20 18:49   ` Alistair Francis
2020-03-17 15:06 ` [PATCH v6 18/61] target/riscv: vector single-width integer multiply instructions LIU Zhiwei
2020-03-25 17:36   ` Alistair Francis
2020-03-28  0:06   ` Richard Henderson
2020-03-28 15:17     ` LIU Zhiwei
2020-03-28 15:47       ` Richard Henderson
2020-03-28 16:13         ` LIU Zhiwei
2020-03-29  4:00           ` LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 19/61] target/riscv: vector integer divide instructions LIU Zhiwei
2020-03-20 18:51   ` Alistair Francis
2020-03-17 15:06 ` [PATCH v6 20/61] target/riscv: vector widening integer multiply instructions LIU Zhiwei
2020-03-25 17:25   ` Alistair Francis
2020-03-17 15:06 ` [PATCH v6 21/61] target/riscv: vector single-width integer multiply-add instructions LIU Zhiwei
2020-03-25 17:27   ` Alistair Francis
2020-03-17 15:06 ` [PATCH v6 22/61] target/riscv: vector widening " LIU Zhiwei
2020-03-25 17:42   ` Alistair Francis
2020-03-17 15:06 ` [PATCH v6 23/61] target/riscv: vector integer merge and move instructions LIU Zhiwei
2020-03-26 17:57   ` Alistair Francis
2020-03-28  0:18   ` Richard Henderson
2020-03-17 15:06 ` [PATCH v6 24/61] target/riscv: vector single-width saturating add and subtract LIU Zhiwei
2020-03-28  0:20   ` Richard Henderson
2020-03-17 15:06 ` [PATCH v6 25/61] target/riscv: vector single-width averaging " LIU Zhiwei
2020-03-19  3:46   ` LIU Zhiwei
2020-03-28  0:32     ` Richard Henderson
2020-03-28  1:07       ` LIU Zhiwei
2020-03-28  1:22         ` Richard Henderson
2020-03-28 15:37           ` LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 26/61] target/riscv: vector single-width fractional multiply with rounding and saturation LIU Zhiwei
2020-03-28  1:08   ` Richard Henderson
2020-03-28 15:41     ` LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 27/61] target/riscv: vector widening saturating scaled multiply-add LIU Zhiwei
2020-03-28  1:23   ` Richard Henderson
2020-03-17 15:06 ` [PATCH v6 28/61] target/riscv: vector single-width scaling shift instructions LIU Zhiwei
2020-03-28  1:24   ` Richard Henderson
2020-03-17 15:06 ` [PATCH v6 29/61] target/riscv: vector narrowing fixed-point clip instructions LIU Zhiwei
2020-03-28  1:50   ` Richard Henderson
2020-03-17 15:06 ` [PATCH v6 30/61] target/riscv: vector single-width floating-point add/subtract instructions LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 31/61] target/riscv: vector widening " LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 32/61] target/riscv: vector single-width floating-point multiply/divide instructions LIU Zhiwei
2020-03-25 17:46   ` Alistair Francis
2020-03-17 15:06 ` [PATCH v6 33/61] target/riscv: vector widening floating-point multiply LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 34/61] target/riscv: vector single-width floating-point fused multiply-add instructions LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 35/61] target/riscv: vector widening " LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 36/61] target/riscv: vector floating-point square-root instruction LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 37/61] target/riscv: vector floating-point min/max instructions LIU Zhiwei
2020-03-25 17:47   ` Alistair Francis
2020-03-17 15:06 ` [PATCH v6 38/61] target/riscv: vector floating-point sign-injection instructions LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 39/61] target/riscv: vector floating-point compare instructions LIU Zhiwei
2020-03-28  2:01   ` Richard Henderson
2020-03-28 15:44     ` LIU Zhiwei
2020-03-17 15:06 ` LIU Zhiwei [this message]
2020-03-28  2:06   ` [PATCH v6 40/61] target/riscv: vector floating-point classify instructions Richard Henderson
2020-03-17 15:06 ` [PATCH v6 41/61] target/riscv: vector floating-point merge instructions LIU Zhiwei
2020-03-28  3:23   ` Richard Henderson
2020-03-28 15:47     ` LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 42/61] target/riscv: vector floating-point/integer type-convert instructions LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 43/61] target/riscv: widening " LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 44/61] target/riscv: narrowing " LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 45/61] target/riscv: vector single-width integer reduction instructions LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 46/61] target/riscv: vector wideing " LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 47/61] target/riscv: vector single-width floating-point " LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 48/61] target/riscv: vector widening " LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 49/61] target/riscv: vector mask-register logical instructions LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 50/61] target/riscv: vector mask population count vmpopc LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 51/61] target/riscv: vmfirst find-first-set mask bit LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 52/61] target/riscv: set-X-first " LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 53/61] target/riscv: vector iota instruction LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 54/61] target/riscv: vector element index instruction LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 55/61] target/riscv: integer extract instruction LIU Zhiwei
2020-03-28  3:36   ` Richard Henderson
2020-03-28 16:23     ` LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 56/61] target/riscv: integer scalar move instruction LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 57/61] target/riscv: floating-point scalar move instructions LIU Zhiwei
2020-03-28  3:44   ` Richard Henderson
2020-03-28 16:31     ` LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 58/61] target/riscv: vector slide instructions LIU Zhiwei
2020-03-28  3:50   ` Richard Henderson
2020-03-28 13:40   ` LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 59/61] target/riscv: vector register gather instruction LIU Zhiwei
2020-03-28  3:57   ` Richard Henderson
2020-03-17 15:06 ` [PATCH v6 60/61] target/riscv: vector compress instruction LIU Zhiwei
2020-03-17 15:06 ` [PATCH v6 61/61] target/riscv: configure and turn on vector extension from command line LIU Zhiwei
2020-03-25 17:49   ` Alistair Francis
2020-03-28  4:00   ` Richard Henderson
2020-03-17 20:47 ` [PATCH v6 00/61] target/riscv: support vector extension v0.7.1 no-reply

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