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authorRichard Henderson <rth@twiddle.net>2012-10-10 09:02:43 -0700
committerBlue Swirl <blauwirbel@gmail.com>2012-10-13 10:39:53 +0000
commitfd84ea2391c044a7840c25dd35336bdaf2a302d0 (patch)
treeda89175c8256e920ddeead4feebe0344820775ba /tcg/sparc/tcg-target.c
parent89269f6cea17d8381e0c366c44780f58ac3c67d8 (diff)
tcg-sparc: Optimize setcond2 equality compare with 0.
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'tcg/sparc/tcg-target.c')
-rw-r--r--tcg/sparc/tcg-target.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/tcg/sparc/tcg-target.c b/tcg/sparc/tcg-target.c
index f7d52d63e2..9c87cb632a 100644
--- a/tcg/sparc/tcg-target.c
+++ b/tcg/sparc/tcg-target.c
@@ -693,9 +693,18 @@ static void tcg_out_setcond2_i32(TCGContext *s, TCGCond cond, TCGArg ret,
switch (cond) {
case TCG_COND_EQ:
case TCG_COND_NE:
- tcg_out_setcond_i32(s, cond, tmp, al, bl, blconst);
- tcg_out_cmp(s, ah, bh, bhconst);
- tcg_out_mov(s, TCG_TYPE_I32, ret, tmp);
+ if (bl == 0 && bh == 0) {
+ if (cond == TCG_COND_EQ) {
+ tcg_out_arith(s, TCG_REG_G0, al, ah, ARITH_ORCC);
+ tcg_out_movi(s, TCG_TYPE_I32, ret, 1);
+ } else {
+ tcg_out_arith(s, ret, al, ah, ARITH_ORCC);
+ }
+ } else {
+ tcg_out_setcond_i32(s, cond, tmp, al, bl, blconst);
+ tcg_out_cmp(s, ah, bh, bhconst);
+ tcg_out_mov(s, TCG_TYPE_I32, ret, tmp);
+ }
tcg_out_movcc(s, TCG_COND_NE, MOVCC_ICC, ret, cond == TCG_COND_NE, 1);
break;