From 8b8cf8f8f507c503282465264e2f9e0f72ef4b03 Mon Sep 17 00:00:00 2001
From: Dmitry Stogov <dmitry@zend.com>
Date: Mon, 28 Feb 2022 10:58:14 +0300
Subject: [PATCH] JIT: Fix register clobbering

---
 ext/opcache/jit/zend_jit_arm64.dasc          | 20 ++++++++++----------
 ext/opcache/tests/jit/assign_dim_op_007.phpt |  2 --
 2 files changed, 10 insertions(+), 12 deletions(-)

diff --git a/ext/opcache/jit/zend_jit_arm64.dasc b/ext/opcache/jit/zend_jit_arm64.dasc
index 6d6bc471ec2..31b52606054 100644
--- a/ext/opcache/jit/zend_jit_arm64.dasc
+++ b/ext/opcache/jit/zend_jit_arm64.dasc
@@ -3816,7 +3816,7 @@ static int zend_jit_inc_dec(dasm_State **Dst, const zend_op *opline, uint32_t op
 				|	LOAD_64BIT_VAL TMP1, val
 				|	fmov Rd(Z_REG(op1_def_addr)-ZREG_V0), TMP1
 			} else {
-				|	SET_ZVAL_LVAL op1_def_addr, val, REG0, TMP1
+				|	SET_ZVAL_LVAL op1_def_addr, val, TMP2, TMP1
 			}
 		} else {
 			uint64_t val = 0xc3e0000000000000;
@@ -3824,7 +3824,7 @@ static int zend_jit_inc_dec(dasm_State **Dst, const zend_op *opline, uint32_t op
 				|	LOAD_64BIT_VAL TMP1, val
 				|	fmov Rd(Z_REG(op1_def_addr)-ZREG_V0), TMP1
 			} else {
-				|	SET_ZVAL_LVAL op1_def_addr, val, REG0, TMP1
+				|	SET_ZVAL_LVAL op1_def_addr, val, TMP2, TMP1
 			}
 		}
 		if (Z_MODE(op1_def_addr) == IS_MEM_ZVAL) {
@@ -4155,7 +4155,7 @@ static int zend_jit_math_long_long(dasm_State    **Dst,
 						|	LOAD_64BIT_VAL TMP1, val
 						|	fmov Rd(Z_REG(res_addr)-ZREG_V0), TMP1
 					} else {
-						|	SET_ZVAL_LVAL res_addr, val, REG0, TMP1
+						|	SET_ZVAL_LVAL res_addr, val, TMP2, TMP1
 					}
 					break;
 				} else if (opcode == ZEND_SUB) {
@@ -4164,7 +4164,7 @@ static int zend_jit_math_long_long(dasm_State    **Dst,
 						|	LOAD_64BIT_VAL TMP1, val
 						|	fmov Rd(Z_REG(res_addr)-ZREG_V0), TMP1
 					} else {
-						|	SET_ZVAL_LVAL res_addr, val, REG0, TMP1
+						|	SET_ZVAL_LVAL res_addr, val, TMP2, TMP1
 					}
 					break;
 				}
@@ -12942,20 +12942,20 @@ static int zend_jit_incdec_obj(dasm_State          **Dst,
 			|3:
 			if (opline->opcode == ZEND_PRE_INC_OBJ || opline->opcode == ZEND_POST_INC_OBJ) {
 				uint64_t val = 0x43e0000000000000;
-				|	LOAD_64BIT_VAL REG0, val
-				|	SET_ZVAL_LVAL_FROM_REG var_addr, REG0, TMP1
+				|	LOAD_64BIT_VAL TMP2, val
+				|	SET_ZVAL_LVAL_FROM_REG var_addr, TMP2, TMP1
 				|	SET_ZVAL_TYPE_INFO var_addr, IS_DOUBLE, TMP1w, TMP2
 				if (opline->opcode == ZEND_PRE_INC_OBJ && opline->result_type != IS_UNUSED) {
-					|	SET_ZVAL_LVAL_FROM_REG res_addr, REG0, TMP1
+					|	SET_ZVAL_LVAL_FROM_REG res_addr, TMP2, TMP1
 					|	SET_ZVAL_TYPE_INFO res_addr, IS_DOUBLE, TMP1w, TMP2
 				}
 			} else {
 				uint64_t val = 0xc3e0000000000000;
-				|	LOAD_64BIT_VAL REG0, val
-				|	SET_ZVAL_LVAL_FROM_REG var_addr, REG0, TMP1
+				|	LOAD_64BIT_VAL TMP2, val
+				|	SET_ZVAL_LVAL_FROM_REG var_addr, TMP2, TMP1
 				|	SET_ZVAL_TYPE_INFO var_addr, IS_DOUBLE, TMP1w, TMP2
 				if (opline->opcode == ZEND_PRE_DEC_OBJ && opline->result_type != IS_UNUSED) {
-					|	SET_ZVAL_LVAL_FROM_REG res_addr, REG0, TMP1
+					|	SET_ZVAL_LVAL_FROM_REG res_addr, TMP2, TMP1
 					|	SET_ZVAL_TYPE_INFO res_addr, IS_DOUBLE, TMP1w, TMP2
 				}
 			}
diff --git a/ext/opcache/tests/jit/assign_dim_op_007.phpt b/ext/opcache/tests/jit/assign_dim_op_007.phpt
index cf7125c2a45..e8708a12551 100644
--- a/ext/opcache/tests/jit/assign_dim_op_007.phpt
+++ b/ext/opcache/tests/jit/assign_dim_op_007.phpt
@@ -5,8 +5,6 @@ opcache.enable=1
 opcache.enable_cli=1
 opcache.file_update_protection=0
 opcache.jit_buffer_size=1M
---XFAIL--
-See https://github.com/php/php-src/issues/8147
 --FILE--
 <?php
 class test {