Short circuit flf ct eval

Author: iluuu1994

Zend/Optimizer/sccp.c

@@ -1717,6 +1717,11 @@ static void sccp_visit_instr(scdf_ctx *scdf, zend_op *opline, zend_ssa_op *ssa_o
 		case ZEND_FRAMELESS_ICALL_1:
 		case ZEND_FRAMELESS_ICALL_2:
 		case ZEND_FRAMELESS_ICALL_3: {
+			/* We already know it can't be evaluated, don't bother checking again */
+			if (ssa_op->result_def < 0 || IS_BOT(&ctx->values[ssa_op->result_def])) {
+				break;
+			}
+
 			if (!ctx->call_map) {
 				SET_RESULT_BOT(result);
 				break;