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[Qemu-devel] [PATCH 35/57] target-i386: kill cpu_T3
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 35/57] target-i386: kill cpu_T3 |
Date: |
Wed, 23 Jan 2013 20:03:19 -0800 |
From: Paolo Bonzini <address@hidden>
It is almost unused, and it is simpler to pass a TCG value directly
to gen_shiftd_rm_T1_T3. This value is then written to t2 without
going through a temporary register.
Signed-off-by: Paolo Bonzini <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
target-i386/translate.c | 19 ++++++++-----------
1 file changed, 8 insertions(+), 11 deletions(-)
diff --git a/target-i386/translate.c b/target-i386/translate.c
index 9752c16..5d93d70 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -64,7 +64,7 @@ static TCGv cpu_A0, cpu_cc_src, cpu_cc_dst;
static TCGv_i32 cpu_cc_op;
static TCGv cpu_regs[CPU_NB_REGS];
/* local temps */
-static TCGv cpu_T[2], cpu_T3;
+static TCGv cpu_T[2];
/* local register indexes (only used inside old micro ops) */
static TCGv cpu_tmp0, cpu_tmp4;
static TCGv_ptr cpu_ptr0, cpu_ptr1;
@@ -1851,8 +1851,8 @@ static void gen_rotc_rm_T1(DisasContext *s, int ot, int
op1,
}
/* XXX: add faster immediate case */
-static void gen_shiftd_rm_T1_T3(DisasContext *s, int ot, int op1,
- int is_right)
+static void gen_shiftd_rm_T1(DisasContext *s, int ot, int op1,
+ int is_right, TCGv count)
{
int label1, label2, data_bits;
target_ulong mask;
@@ -1876,10 +1876,8 @@ static void gen_shiftd_rm_T1_T3(DisasContext *s, int ot,
int op1,
gen_op_mov_v_reg(ot, t0, op1);
}
- tcg_gen_andi_tl(cpu_T3, cpu_T3, mask);
-
+ tcg_gen_andi_tl(t2, count, mask);
tcg_gen_mov_tl(t1, cpu_T[1]);
- tcg_gen_mov_tl(t2, cpu_T3);
/* Must test zero case to avoid using undefined behaviour in TCG
shifts. */
@@ -5583,12 +5581,12 @@ static target_ulong disas_insn(CPUX86State *env,
DisasContext *s,
gen_op_mov_TN_reg(ot, 1, reg);
if (shift) {
- val = cpu_ldub_code(env, s->pc++);
- tcg_gen_movi_tl(cpu_T3, val);
+ TCGv imm = tcg_const_tl(cpu_ldub_code(env, s->pc++));
+ gen_shiftd_rm_T1(s, ot, opreg, op, imm);
+ tcg_temp_free(imm);
} else {
- tcg_gen_mov_tl(cpu_T3, cpu_regs[R_ECX]);
+ gen_shiftd_rm_T1(s, ot, opreg, op, cpu_regs[R_ECX]);
}
- gen_shiftd_rm_T1_T3(s, ot, opreg, op);
break;
/************************/
@@ -7869,7 +7867,6 @@ static inline void
gen_intermediate_code_internal(CPUX86State *env,
cpu_T[0] = tcg_temp_new();
cpu_T[1] = tcg_temp_new();
cpu_A0 = tcg_temp_new();
- cpu_T3 = tcg_temp_new();
cpu_tmp0 = tcg_temp_new();
cpu_tmp1_i64 = tcg_temp_new_i64();
--
1.7.11.7
- [Qemu-devel] [PATCH 43/57] target-i386: Tidy prefix parsing, (continued)
- [Qemu-devel] [PATCH 43/57] target-i386: Tidy prefix parsing, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 42/57] target-i386: Make helper_cc_compute_all const, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 53/57] target-i386: Implement RORX, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 55/57] target-i386: Use clz/ctz for bsf/bsr helpers, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 54/57] target-i386: Implement ADX extension, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 56/57] target-i386: Simplify bsf/bsr flags computation, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 57/57] target-i386: Implement tzcnt and fix lzcnt, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 33/57] target-i386: introduce gen_cmovcc1, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 31/57] target-i386: inline gen_prepare_cc_slow, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 40/57] target-i386: Use CC_SRC2 for ADC and SBB, Richard Henderson, 2013/01/23
- [Qemu-devel] [PATCH 35/57] target-i386: kill cpu_T3,
Richard Henderson <=
- [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