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[Bug rtl-optimization/8126] [3.3/3.4/4.0 regression] Floating point computation far slower in 3.2 than in 2.95
- From: "ian at airs dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 16 Jan 2005 03:35:48 -0000
- Subject: [Bug rtl-optimization/8126] [3.3/3.4/4.0 regression] Floating point computation far slower in 3.2 than in 2.95
- References: <20021002075601.8126.o.lauffenburger@topsolid.com>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From ian at airs dot com 2005-01-16 03:35 -------
If we're going to mark this as a regression, can somebody pin down the cases
where mainline gcc is slower than gcc 2.95?
On my system it is about 35% faster. But that is on a Pentium 4.
I know that Roger Sayle did some work on reg-stack shuffling, but I don't know
how much that affects this PR, if at all.
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CC| |ian at airs dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=8126