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[Bug rtl-optimization/19097] [3.4/4.0/4.1/4.2 regression] Quadratic behavior with many sets for the same register in gcse CPROP
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 8 Jan 2006 16:14:32 -0000
- Subject: [Bug rtl-optimization/19097] [3.4/4.0/4.1/4.2 regression] Quadratic behavior with many sets for the same register in gcse CPROP
- References: <bug-19097-7737@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #31 from steven at gcc dot gnu dot org 2006-01-08 16:14 -------
Re. the timings in comment #29, I should have said that my GCC 3.3 was
bootstrapped, but the GCC 4.0 and GCC 4.1 I used were built with "-O0 -g". I
added 3.3 numbers for "ballpark" reference, not for actual comparison.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19097