Hi,
This patch (fixed by Richard, I just helped testing) fixes a bug in
the hash function which leads to too many collisions and a 3x compile
time overhead for tramp3d. After applying the patch, the compile time
of tramp3d returns to normal (the same as no block-location patch).
Bootstrapped and passed all gcc regression tests.
As the bug itself is obvious, I'll check in the patch to trunk now.
Thanks,
Dehao
libcpp/ChangeLog:
2012-09-25 Dehao Chen <de...@google.com>
PR middle-end/54704
* line-map.c (location_adhoc_data_hash): Fix the hash function.
Index: libcpp/line-map.c
===================================================================
--- libcpp/line-map.c (revision 191743)
+++ libcpp/line-map.c (working copy)
@@ -58,7 +58,7 @@ location_adhoc_data_hash (const void *l)
{
const struct location_adhoc_data *lb =
(const struct location_adhoc_data *) l;
- return (hashval_t) lb->locus + (size_t) &lb->data;
+ return (hashval_t) lb->locus + (size_t) lb->data;
}
/* Compare function for location_adhoc_data hashtable. */
