30 lines
955 B
Diff
30 lines
955 B
Diff
|
From f08c59ce7dee67a95cf06d9588b4312e7d071788 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Aurelien Jarno <aurelien@aurel32.net>
|
||
|
|
Date: Thu, 6 Sep 2012 16:47:14 +0200
|
||
|
|
Subject: [PATCH] tcg/optimize: simplify and r, a, 0 cases
|
||
|
|
|
||
|
|
and r, a, 0 is equivalent to a movi r, 0.
|
||
|
|
|
||
|
|
Reviewed-by: Richard Henderson <rth@twiddle.net>
|
||
|
|
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
|
||
|
|
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
|
||
|
|
---
|
||
|
|
tcg/optimize.c | 1 +
|
||
|
|
1 file changed, 1 insertion(+)
|
||
|
|
|
||
|
|
diff --git a/tcg/optimize.c b/tcg/optimize.c
|
||
|
|
index 0db849e..c12cb2b 100644
|
||
|
|
--- a/tcg/optimize.c
|
||
|
|
+++ b/tcg/optimize.c
|
||
|
|
@@ -360,6 +360,7 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr,
|
||
|
|
|
||
|
|
/* Simplify expression for "op r, a, 0 => movi r, 0" cases */
|
||
|
|
switch (op) {
|
||
|
|
+ CASE_OP_32_64(and):
|
||
|
|
CASE_OP_32_64(mul):
|
||
|
|
if ((temps[args[2]].state == TCG_TEMP_CONST
|
||
|
|
&& temps[args[2]].val == 0)) {
|
||
|
|
--
|
||
|
|
1.7.12.1
|
||
|
|
|