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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 14:13:29 -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 #19 from pinskia at gcc dot gnu dot org 2006-03-10 14:13 -------
(In reply to comment #18)
> (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.
Also the asm is about the same for this function, at least on i686 between
3.4.0 and the source modified version with 4.1.0.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21485