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[Bug other/47167] Performance regression in numerical code
- From: "martin at mpa-garching dot mpg dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 5 Jan 2011 14:42:21 +0000
- Subject: [Bug other/47167] Performance regression in numerical code
- Auto-submitted: auto-generated
- References: <bug-47167-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47167
--- Comment #1 from Martin Reinecke <martin@mpa-garching.mpg.de> 2011-01-05 14:42:20 UTC ---
Created attachment 22904
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22904
shorter test case
More compact test case; the hot spot is marked with "CRITICAL LOOP".
Compile with "gcc -O2 -fomit-frame-pointer testcase2.c -lm" and
test using "time ./a.out".