OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

target/i386: speedup JO/SETO after MUL or IMUL

Browse Source 
OF is equal to the carry flag, so use the same CCPrepare.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2023-10-25 13:13:13 +02:00
parent 6032627f07
commit 1e7dde8008
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
target/i386/tcg/translate.c
View File

@ -1020,6 +1020,9 @@ static CCPrepare gen_prepare_eflags_o(DisasContext *s, TCGv reg)
case CC_OP_CLR:
case CC_OP_POPCNT:
return (CCPrepare) { .cond = TCG_COND_NEVER, .mask = -1 };
case CC_OP_MULB ... CC_OP_MULQ:
return (CCPrepare) { .cond = TCG_COND_NE,
.reg = cpu_cc_src, .mask = -1 };
default:
gen_compute_eflags(s);
return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src,