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[Qemu-devel] [PATCH v2 05/10] tcg/optimize: optimize "op r, a, a => mov
From: |
Aurelien Jarno |
Subject: |
[Qemu-devel] [PATCH v2 05/10] tcg/optimize: optimize "op r, a, a => mov r, a" |
Date: |
Fri, 21 Sep 2012 21:43:13 +0200 |
Now that we can easily detect all copies, we can optimize the
"op r, a, a => mov r, a" case a bit more.
Reviewed-by: Richard Henderson <address@hidden>
Signed-off-by: Aurelien Jarno <address@hidden>
---
tcg/optimize.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tcg/optimize.c b/tcg/optimize.c
index aeb2225..b9a7da9 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -524,7 +524,7 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t
*tcg_opc_ptr,
switch (op) {
CASE_OP_32_64(or):
CASE_OP_32_64(and):
- if (args[1] == args[2]) {
+ if (temps_are_copies(args[1], args[2])) {
if (temps_are_copies(args[0], args[1])) {
gen_opc_buf[op_index] = INDEX_op_nop;
} else {
--
1.7.10.4
- Re: [Qemu-devel] [PATCH v2 10/10] tcg/optimize: add constant folding for deposit, (continued)
[Qemu-devel] [PATCH v2 02/10] tcg/optimize: check types in copy propagation, Aurelien Jarno, 2012/09/21
[Qemu-devel] [PATCH v2 07/10] tcg/optimize: further optimize brcond/movcond/setcond, Aurelien Jarno, 2012/09/21
[Qemu-devel] [PATCH v2 09/10] tcg: remove #ifdef #endif around TCGOpcode tests, Aurelien Jarno, 2012/09/21
[Qemu-devel] [PATCH v2 04/10] tcg/optimize: do copy propagation for all operations, Aurelien Jarno, 2012/09/21
[Qemu-devel] [PATCH v2 05/10] tcg/optimize: optimize "op r, a, a => mov r, a",
Aurelien Jarno <=
[Qemu-devel] [PATCH v2 03/10] tcg/optimize: rework copy progagation, Aurelien Jarno, 2012/09/21
Re: [Qemu-devel] [PATCH v2 00/10] tcg/optimize: rework copy propagation, Richard Henderson, 2012/09/21