From: Aurelien Jarno <aurelien@aurel32.net>
To: qemu-devel@nongnu.org
Cc: Aurelien Jarno <aurelien@aurel32.net>
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 [thread overview]
Message-ID: <1348256598-8146-6-git-send-email-aurelien@aurel32.net> (raw)
In-Reply-To: <1348256598-8146-1-git-send-email-aurelien@aurel32.net>
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 <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
---
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
next prev parent reply other threads:[~2012-09-21 19:43 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-21 19:43 [Qemu-devel] [PATCH v2 00/10] tcg/optimize: rework copy propagation Aurelien Jarno
2012-09-21 19:43 ` [Qemu-devel] [PATCH v2 01/10] tcg/optimize: remove TCG_TEMP_ANY Aurelien Jarno
2012-09-21 19:43 ` [Qemu-devel] [PATCH v2 02/10] tcg/optimize: check types in copy propagation Aurelien Jarno
2012-09-21 19:43 ` [Qemu-devel] [PATCH v2 03/10] tcg/optimize: rework copy progagation Aurelien Jarno
2012-09-21 19:43 ` [Qemu-devel] [PATCH v2 04/10] tcg/optimize: do copy propagation for all operations Aurelien Jarno
2012-09-21 19:43 ` Aurelien Jarno [this message]
2012-09-21 19:43 ` [Qemu-devel] [PATCH v2 06/10] tcg/optimize: optimize "op r, a, a => movi r, 0" Aurelien Jarno
2012-09-21 19:43 ` [Qemu-devel] [PATCH v2 07/10] tcg/optimize: further optimize brcond/movcond/setcond Aurelien Jarno
2012-09-21 23:17 ` Richard Henderson
2012-09-22 9:35 ` Aurelien Jarno
2012-09-22 12:46 ` Richard Henderson
2012-09-21 19:43 ` [Qemu-devel] [PATCH v2 08/10] tcg/optimize: prefer the "op a, a, b" form for commutative ops Aurelien Jarno
2012-09-21 19:43 ` [Qemu-devel] [PATCH v2 09/10] tcg: remove #ifdef #endif around TCGOpcode tests Aurelien Jarno
2012-09-21 19:43 ` [Qemu-devel] [PATCH v2 10/10] tcg/optimize: add constant folding for deposit Aurelien Jarno
2012-09-21 23:22 ` Richard Henderson
2012-09-22 9:41 ` Aurelien Jarno
2012-09-22 12:45 ` Richard Henderson
2012-09-22 14:41 ` Blue Swirl
2012-09-21 23:23 ` [Qemu-devel] [PATCH v2 00/10] tcg/optimize: rework copy propagation Richard Henderson
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