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target-mips: optimize write to env->hflags 

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6941 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2009-03-29 01:28:29 +00:00
parent d45f89f4e4
commit 41db460791
1 changed files with 7 additions and 14 deletions
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21
target-mips/translate.c
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@ -429,8 +429,8 @@ enum {
static TCGv_ptr cpu_env;
static TCGv cpu_gpr[32], cpu_PC;
static TCGv cpu_HI[MIPS_DSP_ACC], cpu_LO[MIPS_DSP_ACC], cpu_ACX[MIPS_DSP_ACC];
static TCGv cpu_dspctrl, btarget;
static TCGv bcond;
static TCGv cpu_dspctrl, btarget, bcond;
static TCGv_i32 hflags;
static TCGv_i32 fpu_fpr32[32], fpu_fpr32h[32];
static TCGv_i32 fpu_fcr0, fpu_fcr31;
@ -758,11 +758,7 @@ static inline void save_cpu_state (DisasContext *ctx, int do_save_pc)
ctx->saved_pc = ctx->pc;
}
if (ctx->hflags != ctx->saved_hflags) {
TCGv_i32 r_tmp = tcg_temp_new_i32();
tcg_gen_movi_i32(r_tmp, ctx->hflags);
tcg_gen_st_i32(r_tmp, cpu_env, offsetof(CPUState, hflags));
tcg_temp_free_i32(r_tmp);
tcg_gen_movi_i32(hflags, ctx->hflags);
ctx->saved_hflags = ctx->hflags;
switch (ctx->hflags & MIPS_HFLAG_BMASK) {
case MIPS_HFLAG_BR:
@ -7555,13 +7551,7 @@ static void decode_opc (CPUState *env, DisasContext *ctx)
MIPS_DEBUG("blikely condition (" TARGET_FMT_lx ")", ctx->pc + 4);
tcg_gen_brcondi_tl(TCG_COND_NE, bcond, 0, l1);
{
TCGv_i32 r_tmp = tcg_temp_new_i32();
tcg_gen_movi_i32(r_tmp, ctx->hflags & ~MIPS_HFLAG_BMASK);
tcg_gen_st_i32(r_tmp, cpu_env, offsetof(CPUState, hflags));
tcg_temp_free_i32(r_tmp);
}
tcg_gen_movi_i32(hflags, ctx->hflags & ~MIPS_HFLAG_BMASK);
gen_goto_tb(ctx, 1, ctx->pc + 4);
gen_set_label(l1);
}
@ -8413,6 +8403,9 @@ static void mips_tcg_init(void)
offsetof(CPUState, bcond), "bcond");
btarget = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUState, btarget), "btarget");
hflags = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUState, hflags), "hflags");
for (i = 0; i < 32; i++)
fpu_fpr32[i] = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUState, active_fpu.fpr[i].w[FP_ENDIAN_IDX]),