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target/i386: Fix the comment for repz_opt 

After fixing a typo in the comment, fixup for CODING_STYLE.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210514151342.384376-28-richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-05-14 10:13:19 -05:00
parent 305d08e512
commit 3236c2ade2
1 changed files with 4 additions and 9 deletions
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13
target/i386/tcg/translate.c
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@ -8521,15 +8521,10 @@ static void i386_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cpu)
dc->cpuid_xsave_features = env->features[FEAT_XSAVE]; dc->cpuid_xsave_features = env->features[FEAT_XSAVE];
dc->jmp_opt = !(dc->base.singlestep_enabled || dc->jmp_opt = !(dc->base.singlestep_enabled ||
(flags & (HF_TF_MASK | HF_INHIBIT_IRQ_MASK))); (flags & (HF_TF_MASK | HF_INHIBIT_IRQ_MASK)));
/* Do not optimize repz jumps at all in icount mode, because /*
rep movsS instructions are execured with different paths * If jmp_opt, we want to handle each string instruction individually.
in !repz_opt and repz_opt modes. The first one was used * For icount also disable repz optimization so that each iteration
always except single step mode. And this setting * is accounted separately.
disables jumps optimization and control paths become
equivalent in run and single step modes.
Now there will be no jump optimization for repz in
record/replay modes and there will always be an
additional step for ecx=0 when icount is enabled.
*/ */
dc->repz_opt = !dc->jmp_opt && !(tb_cflags(dc->base.tb) & CF_USE_ICOUNT); dc->repz_opt = !dc->jmp_opt && !(tb_cflags(dc->base.tb) & CF_USE_ICOUNT);