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[Qemu-devel] [PATCH 08/12] tcg-sparc: Optimize setcond2 equality compare
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 08/12] tcg-sparc: Optimize setcond2 equality compare with 0. |
Date: |
Wed, 26 Sep 2012 18:55:38 -0700 |
Signed-off-by: Richard Henderson <address@hidden>
---
tcg/sparc/tcg-target.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/tcg/sparc/tcg-target.c b/tcg/sparc/tcg-target.c
index b1f3eaf..1618996 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;
--
1.7.11.4
- [Qemu-devel] [PATCH 00/12] tcg-sparc fixes and improvements, Richard Henderson, 2012/09/26
- [Qemu-devel] [PATCH 01/12] tcg-sparc: Fix brcond2, Richard Henderson, 2012/09/26
- [Qemu-devel] [PATCH 03/12] tcg-sparc: Fix setcond2, Richard Henderson, 2012/09/26
- [Qemu-devel] [PATCH 02/12] tcg-sparc: Implement movcond., Richard Henderson, 2012/09/26
- [Qemu-devel] [PATCH 04/12] tcg-sparc: Fix qemu_st for 32-bit, Richard Henderson, 2012/09/26
- [Qemu-devel] [PATCH 06/12] tcg-sparc: Fix add2/sub2, Richard Henderson, 2012/09/26
- [Qemu-devel] [PATCH 05/12] tcg-sparc: Fix setcond, Richard Henderson, 2012/09/26
- [Qemu-devel] [PATCH 08/12] tcg-sparc: Optimize setcond2 equality compare with 0.,
Richard Henderson <=
- [Qemu-devel] [PATCH 07/12] tcg-sparc: Use Z constraint for %g0, Richard Henderson, 2012/09/26
- [Qemu-devel] [PATCH 11/12] tcg-sparc: Emit BPr insns for brcond_i64, Richard Henderson, 2012/09/26
- [Qemu-devel] [PATCH 09/12] tcg-sparc: Drop use of Bicc in favor of BPcc, Richard Henderson, 2012/09/26
- [Qemu-devel] [PATCH 12/12] tcg-sparc: Emit MOVR insns for setcond_i64 and movcond_64, Richard Henderson, 2012/09/26
- [Qemu-devel] [PATCH 10/12] tcg-sparc: Dump illegal opode contents, Richard Henderson, 2012/09/26