Avoid useless "mov"

dstogov · dstogov · commit bc37fc57e58a · 2020-06-05T00:05:12.000+03:00
diff --git a/ext/opcache/jit/zend_jit_x86.dasc b/ext/opcache/jit/zend_jit_x86.dasc
@@ -5245,7 +5245,7 @@ static int zend_jit_assign_to_variable(dasm_State    **Dst,
 
 	//ZEND_ASSERT(Z_MODE(var_addr) == IS_MEM_ZVAL);
 	if (var_info & MAY_BE_REF) {
-		if (Z_MODE(var_addr) != IS_REG || Z_REG(var_addr) != ZREG_FCARG1a) {
+		if (Z_MODE(var_addr) != IS_MEM_ZVAL || Z_REG(var_addr) != ZREG_FCARG1a || Z_OFFSET(var_addr) != 0) {
 			|	LOAD_ZVAL_ADDR FCARG1a, var_addr
 			var_addr = ZEND_ADDR_MEM_ZVAL(ZREG_FCARG1a, 0);
 		}

Original file line number	Diff line number	Diff line change
`@@ -5245,7 +5245,7 @@ static int zend_jit_assign_to_variable(dasm_State **Dst,`
`5245`	`5245`
`5246`	`5246`	`//ZEND_ASSERT(Z_MODE(var_addr) == IS_MEM_ZVAL);`
`5247`	`5247`	`if (var_info & MAY_BE_REF) {`
`5248`		`- if (Z_MODE(var_addr) != IS_REG \|\| Z_REG(var_addr) != ZREG_FCARG1a) {`
	`5248`	`+ if (Z_MODE(var_addr) != IS_MEM_ZVAL \|\| Z_REG(var_addr) != ZREG_FCARG1a \|\| Z_OFFSET(var_addr) != 0) {`
`5249`	`5249`	`\| LOAD_ZVAL_ADDR FCARG1a, var_addr`
`5250`	`5250`	`var_addr = ZEND_ADDR_MEM_ZVAL(ZREG_FCARG1a, 0);`
`5251`	`5251`	`}`