From: Dmitry Stogov <dmitry@zend.com>
Date: Wed, 29 Jul 2020 19:01:19 +0000 (+0300)
Subject: Fixed temporary register usage
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=44384dfb3e620bf947b263dcf9169f3637c0acc5;p=php

Fixed temporary register usage
---

diff --git a/ext/opcache/jit/zend_jit_x86.dasc b/ext/opcache/jit/zend_jit_x86.dasc
index 19e56ef6b6..efb0b7f682 100644
--- a/ext/opcache/jit/zend_jit_x86.dasc
+++ b/ext/opcache/jit/zend_jit_x86.dasc
@@ -4101,7 +4101,7 @@ static int zend_jit_math_double_long(dasm_State    **Dst,
 
 		if (Z_MODE(res_addr) == IS_REG) {
 			result_reg = Z_REG(res_addr);
-			tmp_reg = ZREG_XMM0;
+			tmp_reg = (result_reg == ZREG_XMM0) ? ZREG_XMM1 : ZREG_XMM0;
 		} else if (Z_MODE(op1_addr) == IS_REG && Z_LAST_USE(op1_addr)) {
 			result_reg = Z_REG(op1_addr);
 			tmp_reg = ZREG_XMM0;