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Sat, 19 Jun 2021 11:14:54 -0700 (PDT) Received: from localhost.localdomain ([71.212.149.176]) by smtp.gmail.com with ESMTPSA id k35sm12059113pgi.21.2021.06.19.11.14.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Jun 2021 11:14:53 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 01/33] tcg: Combine dh_is_64bit and dh_is_signed to dh_typecode Date: Sat, 19 Jun 2021 11:14:20 -0700 Message-Id: <20210619181452.877683-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210619181452.877683-1-richard.henderson@linaro.org> References: <20210619181452.877683-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::436; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x436.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" We will shortly be interested in distinguishing pointers from integers in the helper's declaration, as well as a true void return. We currently have two parallel 1 bit fields; merge them and expand to a 3 bit field. Our current maximum is 7 helper arguments, plus the return makes 8 * 3 = 24 bits used within the uint32_t typemask. Tested-by: Philippe Mathieu-Daudé Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson --- include/exec/helper-head.h | 37 +++++-------------- include/exec/helper-tcg.h | 34 ++++++++--------- target/hppa/helper.h | 3 -- target/i386/ops_sse_header.h | 3 -- target/m68k/helper.h | 1 - target/ppc/helper.h | 3 -- tcg/tcg.c | 71 +++++++++++++++++++++--------------- 7 files changed, 67 insertions(+), 85 deletions(-) diff --git a/include/exec/helper-head.h b/include/exec/helper-head.h index 3094c7946d..b974eb394a 100644 --- a/include/exec/helper-head.h +++ b/include/exec/helper-head.h @@ -85,32 +85,14 @@ #define dh_retvar_ptr tcgv_ptr_temp(retval) #define dh_retvar(t) glue(dh_retvar_, dh_alias(t)) -#define dh_is_64bit_void 0 -#define dh_is_64bit_noreturn 0 -#define dh_is_64bit_i32 0 -#define dh_is_64bit_i64 1 -#define dh_is_64bit_ptr (sizeof(void *) == 8) -#define dh_is_64bit_cptr dh_is_64bit_ptr -#define dh_is_64bit(t) glue(dh_is_64bit_, dh_alias(t)) - -#define dh_is_signed_void 0 -#define dh_is_signed_noreturn 0 -#define dh_is_signed_i32 0 -#define dh_is_signed_s32 1 -#define dh_is_signed_i64 0 -#define dh_is_signed_s64 1 -#define dh_is_signed_f16 0 -#define dh_is_signed_f32 0 -#define dh_is_signed_f64 0 -#define dh_is_signed_tl 0 -#define dh_is_signed_int 1 -/* ??? This is highly specific to the host cpu. There are even special - extension instructions that may be required, e.g. ia64's addp4. But - for now we don't support any 64-bit targets with 32-bit pointers. */ -#define dh_is_signed_ptr 0 -#define dh_is_signed_cptr dh_is_signed_ptr -#define dh_is_signed_env dh_is_signed_ptr -#define dh_is_signed(t) dh_is_signed_##t +#define dh_typecode_void 0 +#define dh_typecode_noreturn 0 +#define dh_typecode_i32 2 +#define dh_typecode_s32 3 +#define dh_typecode_i64 4 +#define dh_typecode_s64 5 +#define dh_typecode_ptr 6 +#define dh_typecode(t) glue(dh_typecode_, dh_alias(t)) #define dh_callflag_i32 0 #define dh_callflag_s32 0 @@ -126,8 +108,7 @@ #define dh_callflag_noreturn TCG_CALL_NO_RETURN #define dh_callflag(t) glue(dh_callflag_, dh_alias(t)) -#define dh_sizemask(t, n) \ - ((dh_is_64bit(t) << (n*2)) | (dh_is_signed(t) << (n*2+1))) +#define dh_typemask(t, n) (dh_typecode(t) << (n * 3)) #define dh_arg(t, n) \ glue(glue(tcgv_, dh_alias(t)), _temp)(glue(arg, n)) diff --git a/include/exec/helper-tcg.h b/include/exec/helper-tcg.h index 6888514635..16cd318b83 100644 --- a/include/exec/helper-tcg.h +++ b/include/exec/helper-tcg.h @@ -13,50 +13,50 @@ #define DEF_HELPER_FLAGS_0(NAME, FLAGS, ret) \ { .func = HELPER(NAME), .name = str(NAME), \ .flags = FLAGS | dh_callflag(ret), \ - .sizemask = dh_sizemask(ret, 0) }, + .typemask = dh_typemask(ret, 0) }, #define DEF_HELPER_FLAGS_1(NAME, FLAGS, ret, t1) \ { .func = HELPER(NAME), .name = str(NAME), \ .flags = FLAGS | dh_callflag(ret), \ - .sizemask = dh_sizemask(ret, 0) | dh_sizemask(t1, 1) }, + .typemask = dh_typemask(ret, 0) | dh_typemask(t1, 1) }, #define DEF_HELPER_FLAGS_2(NAME, FLAGS, ret, t1, t2) \ { .func = HELPER(NAME), .name = str(NAME), \ .flags = FLAGS | dh_callflag(ret), \ - .sizemask = dh_sizemask(ret, 0) | dh_sizemask(t1, 1) \ - | dh_sizemask(t2, 2) }, + .typemask = dh_typemask(ret, 0) | dh_typemask(t1, 1) \ + | dh_typemask(t2, 2) }, #define DEF_HELPER_FLAGS_3(NAME, FLAGS, ret, t1, t2, t3) \ { .func = HELPER(NAME), .name = str(NAME), \ .flags = FLAGS | dh_callflag(ret), \ - .sizemask = dh_sizemask(ret, 0) | dh_sizemask(t1, 1) \ - | dh_sizemask(t2, 2) | dh_sizemask(t3, 3) }, + .typemask = dh_typemask(ret, 0) | dh_typemask(t1, 1) \ + | dh_typemask(t2, 2) | dh_typemask(t3, 3) }, #define DEF_HELPER_FLAGS_4(NAME, FLAGS, ret, t1, t2, t3, t4) \ { .func = HELPER(NAME), .name = str(NAME), \ .flags = FLAGS | dh_callflag(ret), \ - .sizemask = dh_sizemask(ret, 0) | dh_sizemask(t1, 1) \ - | dh_sizemask(t2, 2) | dh_sizemask(t3, 3) | dh_sizemask(t4, 4) }, + .typemask = dh_typemask(ret, 0) | dh_typemask(t1, 1) \ + | dh_typemask(t2, 2) | dh_typemask(t3, 3) | dh_typemask(t4, 4) }, #define DEF_HELPER_FLAGS_5(NAME, FLAGS, ret, t1, t2, t3, t4, t5) \ { .func = HELPER(NAME), .name = str(NAME), \ .flags = FLAGS | dh_callflag(ret), \ - .sizemask = dh_sizemask(ret, 0) | dh_sizemask(t1, 1) \ - | dh_sizemask(t2, 2) | dh_sizemask(t3, 3) | dh_sizemask(t4, 4) \ - | dh_sizemask(t5, 5) }, + .typemask = dh_typemask(ret, 0) | dh_typemask(t1, 1) \ + | dh_typemask(t2, 2) | dh_typemask(t3, 3) | dh_typemask(t4, 4) \ + | dh_typemask(t5, 5) }, #define DEF_HELPER_FLAGS_6(NAME, FLAGS, ret, t1, t2, t3, t4, t5, t6) \ { .func = HELPER(NAME), .name = str(NAME), \ .flags = FLAGS | dh_callflag(ret), \ - .sizemask = dh_sizemask(ret, 0) | dh_sizemask(t1, 1) \ - | dh_sizemask(t2, 2) | dh_sizemask(t3, 3) | dh_sizemask(t4, 4) \ - | dh_sizemask(t5, 5) | dh_sizemask(t6, 6) }, + .typemask = dh_typemask(ret, 0) | dh_typemask(t1, 1) \ + | dh_typemask(t2, 2) | dh_typemask(t3, 3) | dh_typemask(t4, 4) \ + | dh_typemask(t5, 5) | dh_typemask(t6, 6) }, #define DEF_HELPER_FLAGS_7(NAME, FLAGS, ret, t1, t2, t3, t4, t5, t6, t7) \ { .func = HELPER(NAME), .name = str(NAME), .flags = FLAGS, \ - .sizemask = dh_sizemask(ret, 0) | dh_sizemask(t1, 1) \ - | dh_sizemask(t2, 2) | dh_sizemask(t3, 3) | dh_sizemask(t4, 4) \ - | dh_sizemask(t5, 5) | dh_sizemask(t6, 6) | dh_sizemask(t7, 7) }, + .typemask = dh_typemask(ret, 0) | dh_typemask(t1, 1) \ + | dh_typemask(t2, 2) | dh_typemask(t3, 3) | dh_typemask(t4, 4) \ + | dh_typemask(t5, 5) | dh_typemask(t6, 6) | dh_typemask(t7, 7) }, #include "helper.h" #include "trace/generated-helpers.h" diff --git a/target/hppa/helper.h b/target/hppa/helper.h index 2d483aab58..0a629ffa7c 100644 --- a/target/hppa/helper.h +++ b/target/hppa/helper.h @@ -1,12 +1,9 @@ #if TARGET_REGISTER_BITS == 64 # define dh_alias_tr i64 -# define dh_is_64bit_tr 1 #else # define dh_alias_tr i32 -# define dh_is_64bit_tr 0 #endif #define dh_ctype_tr target_ureg -#define dh_is_signed_tr 0 DEF_HELPER_2(excp, noreturn, env, int) DEF_HELPER_FLAGS_2(tsv, TCG_CALL_NO_WG, void, env, tr) diff --git a/target/i386/ops_sse_header.h b/target/i386/ops_sse_header.h index 6c0c849347..e68af5c403 100644 --- a/target/i386/ops_sse_header.h +++ b/target/i386/ops_sse_header.h @@ -30,9 +30,6 @@ #define dh_ctype_Reg Reg * #define dh_ctype_ZMMReg ZMMReg * #define dh_ctype_MMXReg MMXReg * -#define dh_is_signed_Reg dh_is_signed_ptr -#define dh_is_signed_ZMMReg dh_is_signed_ptr -#define dh_is_signed_MMXReg dh_is_signed_ptr DEF_HELPER_3(glue(psrlw, SUFFIX), void, env, Reg, Reg) DEF_HELPER_3(glue(psraw, SUFFIX), void, env, Reg, Reg) diff --git a/target/m68k/helper.h b/target/m68k/helper.h index 77808497a9..9842eeaa95 100644 --- a/target/m68k/helper.h +++ b/target/m68k/helper.h @@ -17,7 +17,6 @@ DEF_HELPER_4(cas2l_parallel, void, env, i32, i32, i32) #define dh_alias_fp ptr #define dh_ctype_fp FPReg * -#define dh_is_signed_fp dh_is_signed_ptr DEF_HELPER_3(exts32, void, env, fp, s32) DEF_HELPER_3(extf32, void, env, fp, f32) diff --git a/target/ppc/helper.h b/target/ppc/helper.h index c517b9f025..4076aa281e 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -109,11 +109,9 @@ DEF_HELPER_FLAGS_1(ftsqrt, TCG_CALL_NO_RWG_SE, i32, i64) #define dh_alias_avr ptr #define dh_ctype_avr ppc_avr_t * -#define dh_is_signed_avr dh_is_signed_ptr #define dh_alias_vsr ptr #define dh_ctype_vsr ppc_vsr_t * -#define dh_is_signed_vsr dh_is_signed_ptr DEF_HELPER_3(vavgub, void, avr, avr, avr) DEF_HELPER_3(vavguh, void, avr, avr, avr) @@ -697,7 +695,6 @@ DEF_HELPER_3(store_601_batu, void, env, i32, tl) #define dh_alias_fprp ptr #define dh_ctype_fprp ppc_fprp_t * -#define dh_is_signed_fprp dh_is_signed_ptr DEF_HELPER_4(dadd, void, env, fprp, fprp, fprp) DEF_HELPER_4(daddq, void, env, fprp, fprp, fprp) diff --git a/tcg/tcg.c b/tcg/tcg.c index ca482c2301..3d6e6b260c 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -536,7 +536,7 @@ typedef struct TCGHelperInfo { void *func; const char *name; unsigned flags; - unsigned sizemask; + unsigned typemask; } TCGHelperInfo; #include "exec/helper-proto.h" @@ -1395,13 +1395,13 @@ bool tcg_op_supported(TCGOpcode op) void tcg_gen_callN(void *func, TCGTemp *ret, int nargs, TCGTemp **args) { int i, real_args, nb_rets, pi; - unsigned sizemask, flags; + unsigned typemask, flags; TCGHelperInfo *info; TCGOp *op; info = g_hash_table_lookup(helper_table, (gpointer)func); flags = info->flags; - sizemask = info->sizemask; + typemask = info->typemask; #ifdef CONFIG_PLUGIN /* detect non-plugin helpers */ @@ -1414,36 +1414,41 @@ void tcg_gen_callN(void *func, TCGTemp *ret, int nargs, TCGTemp **args) && !defined(CONFIG_TCG_INTERPRETER) /* We have 64-bit values in one register, but need to pass as two separate parameters. Split them. */ - int orig_sizemask = sizemask; + int orig_typemask = typemask; int orig_nargs = nargs; TCGv_i64 retl, reth; TCGTemp *split_args[MAX_OPC_PARAM]; retl = NULL; reth = NULL; - if (sizemask != 0) { - for (i = real_args = 0; i < nargs; ++i) { - int is_64bit = sizemask & (1 << (i+1)*2); - if (is_64bit) { - TCGv_i64 orig = temp_tcgv_i64(args[i]); - TCGv_i32 h = tcg_temp_new_i32(); - TCGv_i32 l = tcg_temp_new_i32(); - tcg_gen_extr_i64_i32(l, h, orig); - split_args[real_args++] = tcgv_i32_temp(h); - split_args[real_args++] = tcgv_i32_temp(l); - } else { - split_args[real_args++] = args[i]; - } + typemask = 0; + for (i = real_args = 0; i < nargs; ++i) { + int argtype = extract32(orig_typemask, (i + 1) * 3, 3); + bool is_64bit = (argtype & ~1) == dh_typecode_i64; + + if (is_64bit) { + TCGv_i64 orig = temp_tcgv_i64(args[i]); + TCGv_i32 h = tcg_temp_new_i32(); + TCGv_i32 l = tcg_temp_new_i32(); + tcg_gen_extr_i64_i32(l, h, orig); + split_args[real_args++] = tcgv_i32_temp(h); + typemask |= dh_typecode_i32 << (real_args * 3); + split_args[real_args++] = tcgv_i32_temp(l); + typemask |= dh_typecode_i32 << (real_args * 3); + } else { + split_args[real_args++] = args[i]; + typemask |= argtype << (real_args * 3); } - nargs = real_args; - args = split_args; - sizemask = 0; } + nargs = real_args; + args = split_args; #elif defined(TCG_TARGET_EXTEND_ARGS) && TCG_TARGET_REG_BITS == 64 for (i = 0; i < nargs; ++i) { - int is_64bit = sizemask & (1 << (i+1)*2); - int is_signed = sizemask & (2 << (i+1)*2); - if (!is_64bit) { + int argtype = extract32(typemask, (i + 1) * 3, 3); + bool is_32bit = (argtype & ~1) == dh_typecode_i32; + bool is_signed = argtype & 1; + + if (is_32bit) { TCGv_i64 temp = tcg_temp_new_i64(); TCGv_i64 orig = temp_tcgv_i64(args[i]); if (is_signed) { @@ -1462,7 +1467,7 @@ void tcg_gen_callN(void *func, TCGTemp *ret, int nargs, TCGTemp **args) if (ret != NULL) { #if defined(__sparc__) && !defined(__arch64__) \ && !defined(CONFIG_TCG_INTERPRETER) - if (orig_sizemask & 1) { + if ((typemask & 6) == dh_typecode_i64) { /* The 32-bit ABI is going to return the 64-bit value in the %o0/%o1 register pair. Prepare for this by using two return temporaries, and reassemble below. */ @@ -1476,7 +1481,7 @@ void tcg_gen_callN(void *func, TCGTemp *ret, int nargs, TCGTemp **args) nb_rets = 1; } #else - if (TCG_TARGET_REG_BITS < 64 && (sizemask & 1)) { + if (TCG_TARGET_REG_BITS < 64 && (typemask & 6) == dh_typecode_i64) { #ifdef HOST_WORDS_BIGENDIAN op->args[pi++] = temp_arg(ret + 1); op->args[pi++] = temp_arg(ret); @@ -1497,7 +1502,9 @@ void tcg_gen_callN(void *func, TCGTemp *ret, int nargs, TCGTemp **args) real_args = 0; for (i = 0; i < nargs; i++) { - int is_64bit = sizemask & (1 << (i+1)*2); + int argtype = extract32(typemask, (i + 1) * 3, 3); + bool is_64bit = (argtype & ~1) == dh_typecode_i64; + if (TCG_TARGET_REG_BITS < 64 && is_64bit) { #ifdef TCG_TARGET_CALL_ALIGN_ARGS /* some targets want aligned 64 bit args */ @@ -1542,7 +1549,9 @@ void tcg_gen_callN(void *func, TCGTemp *ret, int nargs, TCGTemp **args) && !defined(CONFIG_TCG_INTERPRETER) /* Free all of the parts we allocated above. */ for (i = real_args = 0; i < orig_nargs; ++i) { - int is_64bit = orig_sizemask & (1 << (i+1)*2); + int argtype = extract32(orig_typemask, (i + 1) * 3, 3); + bool is_64bit = (argtype & ~1) == dh_typecode_i64; + if (is_64bit) { tcg_temp_free_internal(args[real_args++]); tcg_temp_free_internal(args[real_args++]); @@ -1550,7 +1559,7 @@ void tcg_gen_callN(void *func, TCGTemp *ret, int nargs, TCGTemp **args) real_args++; } } - if (orig_sizemask & 1) { + if ((orig_typemask & 6) == dh_typecode_i64) { /* The 32-bit ABI returned two 32-bit pieces. Re-assemble them. Note that describing these as TCGv_i64 eliminates an unnecessary zero-extension that tcg_gen_concat_i32_i64 would create. */ @@ -1560,8 +1569,10 @@ void tcg_gen_callN(void *func, TCGTemp *ret, int nargs, TCGTemp **args) } #elif defined(TCG_TARGET_EXTEND_ARGS) && TCG_TARGET_REG_BITS == 64 for (i = 0; i < nargs; ++i) { - int is_64bit = sizemask & (1 << (i+1)*2); - if (!is_64bit) { + int argtype = extract32(typemask, (i + 1) * 3, 3); + bool is_32bit = (argtype & ~1) == dh_typecode_i32; + + if (is_32bit) { tcg_temp_free_internal(args[i]); } } -- 2.25.1