strcmp() is slow. Initiate comparison with "__LINE__" or "__FILE__"
only if the identifier starts with '_', which is rare.
---
src/compiler/glsl/glcpp/glcpp-parse.y | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/src/compiler/glsl/glcpp/glcpp-parse.y
b/src/compiler/glsl/glcpp/glcpp-parse.y
index d5aa27e..4780c9f 100644
--- a/src/compiler/glsl/glcpp/glcpp-parse.y
+++ b/src/compiler/glsl/glcpp/glcpp-parse.y
@@ -1834,11 +1834,15 @@ _glcpp_parser_expand_node(glcpp_parser_t *parser,
token_node_t *node,
/* Special handling for __LINE__ and __FILE__, (not through
* the hash table). */
- if (strcmp(identifier, "__LINE__") == 0)
- return _token_list_create_with_one_integer(parser,
node->token->location.first_line);
-
- if (strcmp(identifier, "__FILE__") == 0)
- return _token_list_create_with_one_integer(parser,
node->token->location.source);
+ if (*identifier == '_') {
+ if (strcmp(identifier, "__LINE__") == 0)
+ return _token_list_create_with_one_integer(parser,
+
node->token->location.first_line);
+
+ if (strcmp(identifier, "__FILE__") == 0)
+ return _token_list_create_with_one_integer(parser,
+
node->token->location.source);
+ }
/* Look up this identifier in the hash table. */
entry = _mesa_hash_table_search(parser->defines, identifier);
--
2.7.4
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