JIT: Eliminate useless exception check

Author: dstogov

ext/opcache/jit/zend_jit_arm64.dasc

@@ -12331,14 +12331,16 @@ static int zend_jit_fetch_obj(dasm_State          **Dst,
 			|	EXT_CALL zend_jit_extract_helper, REG0
 			|1:
 		} else if (!op1_avoid_refcounting) {
+			if (on_this) {
+				op1_info &= ~MAY_BE_RC1;
+			}
 			|	FREE_OP opline->op1_type, opline->op1, op1_info, 1, opline, ZREG_TMP1, ZREG_TMP2
 		}
 	}
 
 	if (JIT_G(trigger) == ZEND_JIT_ON_HOT_TRACE
 	 && prop_info
-	 && opline->op1_type != IS_VAR
-	 && opline->op1_type != IS_TMP_VAR) {
+	 && (!(opline->op1_type & (IS_VAR|IS_TMP_VAR)) || on_this || op1_indirect)) {
 		may_throw = 0;
 	}
 

ext/opcache/jit/zend_jit_x86.dasc

@@ -13036,14 +13036,16 @@ static int zend_jit_fetch_obj(dasm_State          **Dst,
 			|	EXT_CALL zend_jit_extract_helper, r0
 			|1:
 		} else if (!op1_avoid_refcounting) {
+			if (on_this) {
+				op1_info &= ~MAY_BE_RC1;
+			}
 			|	FREE_OP opline->op1_type, opline->op1, op1_info, 1, opline
 		}
 	}
 
 	if (JIT_G(trigger) == ZEND_JIT_ON_HOT_TRACE
 	 && prop_info
-	 && opline->op1_type != IS_VAR
-	 && opline->op1_type != IS_TMP_VAR) {
+	 && (!(opline->op1_type & (IS_VAR|IS_TMP_VAR)) || on_this || op1_indirect)) {
 		may_throw = 0;
 	}