Use ZEND_JMP instead of ZEND_BRK/ZEND_CONT

Emit necessary FREEs during compilation, convert to JMP during
pass_two (we may not know target opline beforehand).

1 files changed, 26 insertions, 16 deletions

diff --git a/Zend/zend_opcode.c b/Zend/zend_opcode.c
index 933c75a706..7365d6a518 100644
--- a/Zend/zend_opcode.c
+++ b/Zend/zend_opcode.c
@@ -666,6 +666,20 @@ static void zend_resolve_finally_ret(zend_op_array *op_array, uint32_t op_num)
 	}
 }
 
+static uint32_t zend_get_brk_cont_target(const zend_op_array *op_array, const zend_op *opline) {
+	int nest_levels = opline->op2.num;
+	int array_offset = opline->op1.num;
+	zend_brk_cont_element *jmp_to;
+	do {
+		jmp_to = &op_array->brk_cont_array[array_offset];
+		if (nest_levels > 1) {
+			array_offset = jmp_to->parent;
+		}
+	} while (--nest_levels > 0);
+
+	return opline->opcode == ZEND_BRK ? jmp_to->brk : jmp_to->cont;
+}
+
 static void zend_resolve_finally_calls(zend_op_array *op_array)
 {
 	uint32_t i, j;
@@ -681,22 +695,8 @@ static void zend_resolve_finally_calls(zend_op_array *op_array)
 				break;
 			case ZEND_BRK:
 			case ZEND_CONT:
-			{
-				int nest_levels = opline->op2.num;
-				int array_offset = opline->op1.num;
-				zend_brk_cont_element *jmp_to;
-
-				if (array_offset != -1) {
-					do {
-						jmp_to = &op_array->brk_cont_array[array_offset];
-						if (nest_levels > 1) {
-							array_offset = jmp_to->parent;
-						}
-					} while (--nest_levels > 0);
-					zend_resolve_finally_call(op_array, i, opline->opcode == ZEND_BRK ? jmp_to->brk : jmp_to->cont);
-					break;
-				}
-			}
+				zend_resolve_finally_call(op_array, i, zend_get_brk_cont_target(op_array, opline));
+				break;
 			case ZEND_GOTO:
 				if (Z_TYPE_P(CT_CONSTANT_EX(op_array, opline->op2.constant)) != IS_LONG) {
 					uint32_t num = opline->op2.constant;
@@ -774,6 +774,16 @@ ZEND_API int pass_two(zend_op_array *op_array)
 			case ZEND_DECLARE_INHERITED_CLASS_DELAYED:
 				opline->extended_value = (uint32_t)(zend_intptr_t)ZEND_CALL_VAR_NUM(NULL, op_array->last_var + opline->extended_value);
 				break;
+			case ZEND_BRK:
+			case ZEND_CONT:
+				{
+					uint32_t jmp_target = zend_get_brk_cont_target(op_array, opline);
+					opline->opcode = ZEND_JMP;
+					opline->op1.opline_num = jmp_target;
+					opline->op2.num = 0;
+					ZEND_PASS_TWO_UPDATE_JMP_TARGET(op_array, opline, opline->op1);
+				}
+				break;
 			case ZEND_GOTO:
 				if (Z_TYPE_P(RT_CONSTANT(op_array, opline->op2)) != IS_LONG) {
 					zend_resolve_goto_label(op_array, opline, 1);