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target-i386: Tidy load + truncate 

We can now use tcg_gen_qemu_ld_i32 directly to avoid the truncation.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-11-02 09:54:48 -10:00
parent 24b9c00fc3
commit 80b0201384
1 changed files with 19 additions and 20 deletions
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39
target-i386/translate.c
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@ -4303,12 +4303,11 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
case 0x22:
if (ot == MO_32) { /* pinsrd */
if (mod == 3) {
gen_op_mov_v_reg(ot, cpu_tmp0, rm);
tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_regs[rm]);
} else {
tcg_gen_qemu_ld_tl(cpu_tmp0, cpu_A0,
s->mem_index, MO_LEUL);
tcg_gen_qemu_ld_i32(cpu_tmp2_i32, cpu_A0,
s->mem_index, MO_LEUL);
}
tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_tmp0);
tcg_gen_st_i32(cpu_tmp2_i32, cpu_env,
offsetof(CPUX86State,
xmm_regs[reg].XMM_L(val & 3)));
@ -5905,13 +5904,13 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s,
switch(op >> 4) {
case 0:
gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
tcg_gen_qemu_ld_i32(cpu_tmp2_i32, cpu_A0,
s->mem_index, MO_LEUL);
gen_helper_flds_FT0(cpu_env, cpu_tmp2_i32);
break;
case 1:
gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
tcg_gen_qemu_ld_i32(cpu_tmp2_i32, cpu_A0,
s->mem_index, MO_LEUL);
gen_helper_fildl_FT0(cpu_env, cpu_tmp2_i32);
break;
case 2:
@ -5921,8 +5920,8 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s,
break;
case 3:
default:
gen_op_ld_v(s, MO_SW, cpu_T[0], cpu_A0);
tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
tcg_gen_qemu_ld_i32(cpu_tmp2_i32, cpu_A0,
s->mem_index, MO_LESW);
gen_helper_fildl_FT0(cpu_env, cpu_tmp2_i32);
break;
}
@ -5944,13 +5943,13 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s,
case 0:
switch(op >> 4) {
case 0:
gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
tcg_gen_qemu_ld_i32(cpu_tmp2_i32, cpu_A0,
s->mem_index, MO_LEUL);
gen_helper_flds_ST0(cpu_env, cpu_tmp2_i32);
break;
case 1:
gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
tcg_gen_qemu_ld_i32(cpu_tmp2_i32, cpu_A0,
s->mem_index, MO_LEUL);
gen_helper_fildl_ST0(cpu_env, cpu_tmp2_i32);
break;
case 2:
@ -5960,8 +5959,8 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s,
break;
case 3:
default:
gen_op_ld_v(s, MO_SW, cpu_T[0], cpu_A0);
tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
tcg_gen_qemu_ld_i32(cpu_tmp2_i32, cpu_A0,
s->mem_index, MO_LESW);
gen_helper_fildl_ST0(cpu_env, cpu_tmp2_i32);
break;
}
@ -6023,8 +6022,8 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s,
gen_helper_fldenv(cpu_env, cpu_A0, tcg_const_i32(s->dflag));
break;
case 0x0d: /* fldcw mem */
gen_op_ld_v(s, MO_16, cpu_T[0], cpu_A0);
tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
tcg_gen_qemu_ld_i32(cpu_tmp2_i32, cpu_A0,
s->mem_index, MO_LEUW);
gen_helper_fldcw(cpu_env, cpu_tmp2_i32);
break;
case 0x0e: /* fnstenv mem */
@ -7953,8 +7952,8 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s,
goto illegal_op;
gen_lea_modrm(env, s, modrm);
if (op == 2) {
gen_op_ld_v(s, MO_32, cpu_T[0], cpu_A0);
tcg_gen_trunc_tl_i32(cpu_tmp2_i32, cpu_T[0]);
tcg_gen_qemu_ld_i32(cpu_tmp2_i32, cpu_A0,
s->mem_index, MO_LEUL);
gen_helper_ldmxcsr(cpu_env, cpu_tmp2_i32);
} else {
tcg_gen_ld32u_tl(cpu_T[0], cpu_env, offsetof(CPUX86State, mxcsr));