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Re: proposal for compilation unil wide alias analyis
- From: Richard Henderson <rth at redhat dot com>
- To: Richard Kenner <kenner at vlsi1 dot ultra dot nyu dot edu>
- Cc: mark at codesourcery dot com, gcc at gcc dot gnu dot org
- Date: Sat, 26 Jun 2004 13:29:22 -0700
- Subject: Re: proposal for compilation unil wide alias analyis
- References: <10406262003.AA19887@vlsi1.ultra.nyu.edu>
On Sat, Jun 26, 2004 at 04:03:33PM -0400, Richard Kenner wrote:
> GCC used to do this in part. We'd use a separate register allocator,
> stupid.c, for the -O0 case. This was eliminated in GCC 3 and we took a
> substantial hit on -O0 compilation speed as a result.
No, we didn't. Go back and look at the measurements done at the time.
r~