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target/i386: add a note about gen_jcc1 

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2024-08-14 13:44:47 +02:00
parent cea677e821
commit 44d58e938b
1 changed files with 4 additions and 0 deletions
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4
target/i386/tcg/translate.c
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@ -1193,6 +1193,10 @@ static inline void gen_jcc1(DisasContext *s, int b, TCGLabel *l1)
{ {
CCPrepare cc = gen_prepare_cc(s, b, NULL); CCPrepare cc = gen_prepare_cc(s, b, NULL);
/*
* Note that this must be _after_ gen_prepare_cc, because it
* can change the cc_op from CC_OP_DYNAMIC to CC_OP_EFLAGS!
*/
gen_update_cc_op(s); gen_update_cc_op(s);
if (cc.use_reg2) { if (cc.use_reg2) {
tcg_gen_brcond_tl(cc.cond, cc.reg, cc.reg2, l1); tcg_gen_brcond_tl(cc.cond, cc.reg, cc.reg2, l1);