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[Qemu-devel] [PATCH 34/57] target-i386: expand cmov via movcond
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 34/57] target-i386: expand cmov via movcond |
Date: |
Wed, 23 Jan 2013 20:03:18 -0800 |
Signed-off-by: Richard Henderson <address@hidden>
---
target-i386/translate.c | 52 ++++++++++++++++++++++++++-----------------------
1 file changed, 28 insertions(+), 24 deletions(-)
diff --git a/target-i386/translate.c b/target-i386/translate.c
index 2a220c1..9752c16 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -2410,33 +2410,37 @@ static inline void gen_jcc(DisasContext *s, int b,
static void gen_cmovcc1(CPUX86State *env, DisasContext *s, int ot, int b,
int modrm, int reg)
{
- int l1, mod = (modrm >> 6) & 3;
- TCGv t0 = tcg_temp_local_new();
+ CCPrepare cc;
- if (mod != 3) {
- int reg_addr, offset_addr;
- gen_lea_modrm(env, s, modrm, ®_addr, &offset_addr);
- gen_op_ld_v(ot + s->mem_index, t0, cpu_A0);
- } else {
- int rm = (modrm & 7) | REX_B(s);
- gen_op_mov_v_reg(ot, t0, rm);
- }
+ gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
- l1 = gen_new_label();
- gen_jcc1(s, b ^ 1, l1);
-#ifdef TARGET_X86_64
- if (ot == OT_LONG) {
- tcg_gen_mov_tl(cpu_regs[reg], t0);
- gen_set_label(l1);
- tcg_gen_ext32u_tl(cpu_regs[reg], cpu_regs[reg]);
- } else
-#endif
- {
- gen_op_mov_reg_v(ot, reg, t0);
- gen_set_label(l1);
- }
+ cc = gen_prepare_cc(s, b, cpu_T[1]);
+ switch (cc.cond) {
+ default:
+ if (cc.mask != -1) {
+ TCGv t0 = tcg_temp_new();
+ tcg_gen_andi_tl(t0, cc.reg, cc.mask);
+ cc.reg = t0;
+ }
+ if (!cc.use_reg2) {
+ cc.reg2 = tcg_const_tl(cc.imm);
+ }
- tcg_temp_free(t0);
+ tcg_gen_movcond_tl(cc.cond, cpu_T[0], cc.reg, cc.reg2,
+ cpu_T[0], cpu_regs[reg]);
+
+ if (cc.mask != -1) {
+ tcg_temp_free(cc.reg);
+ }
+ if (!cc.use_reg2) {
+ tcg_temp_free(cc.reg2);
+ }
+ /* FALLTHRU */
+ case TCG_COND_ALWAYS:
+ gen_op_mov_reg_T0(ot, reg);
+ case TCG_COND_NEVER:
+ break;
+ }
}
static inline void gen_op_movl_T0_seg(int seg_reg)
--
1.7.11.7
- [Qemu-devel] [PATCH 49/57] target-i386: Implement BZHI, (continued)
- [Qemu-devel] [PATCH 49/57] target-i386: Implement BZHI, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 39/57] target-i386: optimize flags checking after sub using CC_SRC2, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 36/57] target-i386: use gen_op for cmps/scas, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 48/57] target-i386: Implement BLSR, BLSMSK, BLSI, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 46/57] target-i386: Implement ANDN, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 51/57] target-i386: Implement PDEP, PEXT, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 38/57] target-i386: Update cc_op before TCG branches, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 50/57] target-i386: Implement MULX, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 45/57] target-i386: Implement MOVBE, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 32/57] target-i386: cleanup temporary macros for CCPrepare, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 34/57] target-i386: expand cmov via movcond,
Richard Henderson <=
- [Qemu-devel] [PATCH 37/57] target-i386: introduce gen_jcc1_noeob, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 52/57] target-i386: Implement SHLX, SARX, SHRX, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 20/57] target-i386: Move CC discards to set_cc_op, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 21/57] target-i386: do not call helper to compute ZF/SF, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 26/57] target-i386: optimize setle, Richard Henderson, 2013/01/24
- [Qemu-devel] [PATCH 22/57] target-i386: use inverted setcond when computing NS or NZ, Richard Henderson, 2013/01/24
- [Qemu-devel] [PATCH 24/57] target-i386: change gen_setcc_slow_T0 to gen_setcc_slow, Richard Henderson, 2013/01/24
- [Qemu-devel] [PATCH 29/57] target-i386: introduce gen_prepare_cc, Richard Henderson, 2013/01/24
- [Qemu-devel] [PATCH 27/57] target-i386: optimize setcc instructions, Richard Henderson, 2013/01/24
- [Qemu-devel] [PATCH 47/57] target-i386: Implement BEXTR, Richard Henderson, 2013/01/24