com php-src: Add a comment: ext/opcache/Optimizer/compact_lit erals.c

Commit: e011e6fdf4a7b65d4cf92dcad57f1e4fe4b25b80 Author: Xinchen Hui <laruence@php.net> Wed, 17 Jun 2015 17:33:55 +0800 Parents: a524a375d928366cc971b938f386556d1ef3d6e7 Branches: master Link: http://git.php.net/?p=php-src.git;a=commitdiff;h=e011e6fdf4a7b65d4cf92dcad57f1e4fe4b25b80 Log: Add a comment Changed paths: M ext/opcache/Optimizer/compact_literals.c Diff: diff --git a/ext/opcache/Optimizer/compact_literals.c b/ext/opcache/Optimizer/compact_literals.c index c20ddbd..deae12c 100644 --- a/ext/opcache/Optimizer/compact_literals.c +++ b/ext/opcache/Optimizer/compact_literals.c @@ -345,6 +345,8 @@ void zend_optimizer_compact_literals(zend_op_array *op_array, zend_optimizer_ctx } switch (Z_TYPE(op_array->literals[i])) { case IS_NULL: + /* Only checking MAY_MERGE for IS_NULL here + * is because only IS_NULL can be default value for class type hinting(RECV_INIT). */ if ((info[i].flags & LITERAL_MAY_MERGE)) { if (l_null < 0) { l_null = j;