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[Bug rtl-optimization/21485] [4.0/4.1/4.2 Regression] codegen regression due to PRE increasing register pressure
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 10 Mar 2006 14:10:11 -0000
- Subject: [Bug rtl-optimization/21485] [4.0/4.1/4.2 Regression] codegen regression due to PRE increasing register pressure
- References: <bug-21485-10607@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #18 from pinskia at gcc dot gnu dot org 2006-03-10 14:10 -------
(In reply to comment #17)
> What happens to the time if you replace that function with:
This helps about 5% but it does not get the score back up.
3.4.0's score for this machine is about 900.
4.1.0's score is 720.
4.1.0+scource modification is about 780.
so it helps but there is something else which needs to be improved still.
I don't think this is a RA issue now after looking into the source.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
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Keywords|ra |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21485