From: Paolo Bonzini <pbonzini@redhat.com>
To: qemu-devel@nongnu.org
Subject: [PATCH 10/18] target/i386/tcg: move fcom/fcomp differentiation to gen_helper_fp_arith_ST0_FT0
Date: Wed, 10 Dec 2025 14:16:45 +0100 [thread overview]
Message-ID: <20251210131653.852163-11-pbonzini@redhat.com> (raw)
In-Reply-To: <20251210131653.852163-1-pbonzini@redhat.com>
There is only one call site for gen_helper_fp_arith_ST0_FT0(), therefore
there is no need to check the op1 == 3 in the caller. Once this is done,
eliminate the goto to that call site.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
target/i386/tcg/translate.c | 23 ++++++++---------------
1 file changed, 8 insertions(+), 15 deletions(-)
diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index c755329b3d9..3c55b62bdec 100644
--- a/target/i386/tcg/translate.c
+++ b/target/i386/tcg/translate.c
@@ -1485,6 +1485,7 @@ static void gen_helper_fp_arith_ST0_FT0(int op)
break;
case 3:
gen_helper_fcom_ST0_FT0(tcg_env);
+ gen_helper_fpop(tcg_env);
break;
case 4:
gen_helper_fsub_ST0_FT0(tcg_env);
@@ -2460,36 +2461,28 @@ static void gen_x87(DisasContext *s, X86DecodedInsn *decode)
tcg_gen_qemu_ld_i32(s->tmp2_i32, s->A0,
s->mem_index, MO_LEUL);
gen_helper_flds_FT0(tcg_env, s->tmp2_i32);
- goto fp_arith_ST0_FT0;
+ gen_helper_fp_arith_ST0_FT0(op & 7);
+ break;
case 0x10 ... 0x17: /* fixxxl */
tcg_gen_qemu_ld_i32(s->tmp2_i32, s->A0,
s->mem_index, MO_LEUL);
gen_helper_fildl_FT0(tcg_env, s->tmp2_i32);
- goto fp_arith_ST0_FT0;
+ gen_helper_fp_arith_ST0_FT0(op & 7);
+ break;
case 0x20 ... 0x27: /* fxxxl */
tcg_gen_qemu_ld_i64(s->tmp1_i64, s->A0,
s->mem_index, MO_LEUQ);
gen_helper_fldl_FT0(tcg_env, s->tmp1_i64);
- goto fp_arith_ST0_FT0;
+ gen_helper_fp_arith_ST0_FT0(op & 7);
+ break;
case 0x30 ... 0x37: /* fixxx */
tcg_gen_qemu_ld_i32(s->tmp2_i32, s->A0,
s->mem_index, MO_LESW);
gen_helper_fildl_FT0(tcg_env, s->tmp2_i32);
- goto fp_arith_ST0_FT0;
-
-fp_arith_ST0_FT0:
- {
- int op1 = op & 7;
-
- gen_helper_fp_arith_ST0_FT0(op1);
- if (op1 == 3) {
- /* fcomp needs pop */
- gen_helper_fpop(tcg_env);
- }
- }
+ gen_helper_fp_arith_ST0_FT0(op & 7);
break;
case 0x08: /* flds */
--
2.52.0
next prev parent reply other threads:[~2025-12-10 13:19 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-10 13:16 [PATCH 00/18] First round of target/i386/tcg patches for QEMU 11.0 Paolo Bonzini
2025-12-10 13:16 ` [PATCH 01/18] target/i386/tcg: fix check for invalid VSIB instruction Paolo Bonzini
2025-12-11 15:47 ` Richard Henderson
2025-12-11 20:28 ` Paolo Bonzini
2025-12-11 22:22 ` Richard Henderson
2025-12-12 2:06 ` Paolo Bonzini
2025-12-12 14:37 ` Richard Henderson
2025-12-10 13:16 ` [PATCH 02/18] target/i386/tcg: ignore V3 in 32-bit mode Paolo Bonzini
2025-12-11 15:52 ` Richard Henderson
2025-12-10 13:16 ` [PATCH 03/18] target/i386/tcg: update cc_op after PUSHF Paolo Bonzini
2025-12-11 15:55 ` Richard Henderson
2025-12-10 13:16 ` [PATCH 04/18] target/i386/tcg: mark more instructions that are invalid in 64-bit mode Paolo Bonzini
2025-12-11 15:59 ` Richard Henderson
2025-12-10 13:16 ` [PATCH 05/18] target/i386/tcg: do not compute all flags for SAHF Paolo Bonzini
2025-12-11 16:03 ` Richard Henderson
2025-12-10 13:16 ` [PATCH 06/18] target/i386/tcg: remove do_decode_0F Paolo Bonzini
2025-12-11 16:03 ` Richard Henderson
2025-12-10 13:16 ` [PATCH 07/18] target/i386/tcg: move and expand misplaced comment Paolo Bonzini
2025-12-11 16:04 ` Richard Henderson
2025-12-10 13:16 ` [PATCH 08/18] target/i386/tcg: simplify effective address calculation Paolo Bonzini
2025-12-11 16:15 ` Richard Henderson
2025-12-10 13:16 ` [PATCH 09/18] target/i386/tcg: unnest switch statements in disas_insn_x87 Paolo Bonzini
2025-12-11 16:20 ` Richard Henderson
2025-12-10 13:16 ` Paolo Bonzini [this message]
2025-12-11 16:21 ` [PATCH 10/18] target/i386/tcg: move fcom/fcomp differentiation to gen_helper_fp_arith_ST0_FT0 Richard Henderson
2025-12-10 13:16 ` [PATCH 11/18] target/i386/tcg: reuse gen_helper_fp_arith_ST0_FT0 for fcom STn and fcomp STn Paolo Bonzini
2025-12-11 16:24 ` Richard Henderson
2025-12-10 13:16 ` [PATCH 12/18] target/i386/tcg: reuse gen_helper_fp_arith_ST0_FT0 for undocumented fcom/fcomp variants Paolo Bonzini
2025-12-11 16:26 ` Richard Henderson
2025-12-10 13:16 ` [PATCH 13/18] target/i386/tcg: unify more pop/no-pop x87 instructions Paolo Bonzini
2025-12-10 13:16 ` [PATCH 14/18] target/i386/tcg: kill tmp1_i64 Paolo Bonzini
2025-12-11 16:28 ` Richard Henderson
2025-12-10 13:16 ` [PATCH 15/18] target/i386/tcg: kill tmp2_i32 Paolo Bonzini
2025-12-11 16:29 ` Richard Henderson
2025-12-10 13:16 ` [PATCH 16/18] target/i386/tcg: commonize code to compute SF/ZF/PF Paolo Bonzini
2025-12-11 18:46 ` Richard Henderson
2025-12-12 15:45 ` Paolo Bonzini
2025-12-10 13:16 ` [PATCH 17/18] target/i386/tcg: add a CCOp for SBB x,x Paolo Bonzini
2025-12-11 19:11 ` Richard Henderson
2025-12-12 17:49 ` Paolo Bonzini
2025-12-10 13:16 ` [PATCH 18/18] target/i386/tcg: move fetch code out of translate.c Paolo Bonzini
2025-12-11 19:29 ` Richard Henderson
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