From 0dcd65f271dce9364bae205b036ca44b4fc96894 Mon Sep 17 00:00:00 2001
From: Per Hedbor <ph@opera.com>
Date: Mon, 18 Aug 2014 15:12:20 +0200
Subject: [PATCH] Automatically convert cmp_reg[32](reg,0) to test_reg(reg).
---
src/code/amd64.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/src/code/amd64.c b/src/code/amd64.c
index 1b431664be..5fad0a848e 100644
--- a/src/code/amd64.c
+++ b/src/code/amd64.c
@@ -665,6 +665,11 @@ static void test_reg32( enum amd64_reg reg1 )
static void cmp_reg_imm( enum amd64_reg reg, int imm32 )
{
+ if(!imm32)
+ {
+ test_reg( reg );
+ return;
+ }
rex(1, 0, 0, reg);
if( imm32 > 0x7f || imm32 < -0x80 )
{
@@ -690,6 +695,11 @@ static void cmp_reg_imm( enum amd64_reg reg, int imm32 )
static void cmp_reg32_imm( enum amd64_reg reg, int imm32 )
{
+ if(!imm32)
+ {
+ test_reg( reg );
+ return;
+ }
rex(0, 0, 0, reg);
if( imm32 > 0x7f || imm32 < -0x80 )
{
--
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