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authorbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2008-05-25 18:49:06 +0000
committerbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2008-05-25 18:49:06 +0000
commit560f92cc34865f1f552079240d630a524a76c084 (patch)
tree995b180292ef42c5ed58fdcc868c8f8f51813f17 /tcg/x86_64
parentaffa3264db0fa0508d3fe9755592a21f48cc077e (diff)
jump simplification
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4583 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'tcg/x86_64')
-rw-r--r--tcg/x86_64/tcg-target.c23
1 files changed, 1 insertions, 22 deletions
diff --git a/tcg/x86_64/tcg-target.c b/tcg/x86_64/tcg-target.c
index 7197f401c..168faabee 100644
--- a/tcg/x86_64/tcg-target.c
+++ b/tcg/x86_64/tcg-target.c
@@ -450,41 +450,20 @@ static void tcg_out_brcond(TCGContext *s, int cond,
TCGArg arg1, TCGArg arg2, int const_arg2,
int label_index, int rexw)
{
- int c;
if (const_arg2) {
if (arg2 == 0) {
- /* use test */
- switch(cond) {
- case TCG_COND_EQ:
- c = JCC_JE;
- break;
- case TCG_COND_NE:
- c = JCC_JNE;
- break;
- case TCG_COND_LT:
- c = JCC_JS;
- break;
- case TCG_COND_GE:
- c = JCC_JNS;
- break;
- default:
- goto do_cmpi;
- }
/* test r, r */
tcg_out_modrm(s, 0x85 | rexw, arg1, arg1);
- tcg_out_jxx(s, c, label_index);
} else {
- do_cmpi:
if (rexw)
tgen_arithi64(s, ARITH_CMP, arg1, arg2);
else
tgen_arithi32(s, ARITH_CMP, arg1, arg2);
- tcg_out_jxx(s, tcg_cond_to_jcc[cond], label_index);
}
} else {
tcg_out_modrm(s, 0x01 | (ARITH_CMP << 3) | rexw, arg2, arg1);
- tcg_out_jxx(s, tcg_cond_to_jcc[cond], label_index);
}
+ tcg_out_jxx(s, tcg_cond_to_jcc[cond], label_index);
}
#if defined(CONFIG_SOFTMMU)