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Re: Optimization: Conclusions from Evolutionary Analysis

From: Scott Robert Ladd <coyote at coyotegulch dot com>
To: Dan Nicolaescu <dann at ics dot uci dot edu>
Cc: gcc at gcc dot gnu dot org
Date: Tue, 18 Nov 2003 13:27:31 -0500
Subject: Re: Optimization: Conclusions from Evolutionary Analysis
References: <3FBA36BB.90705@coyotegulch.com> <200311181659.hAIGxo9p010727@gremlin.ics.uci.edu>

Dan Nicolaescu wrote:

If -fomit-frame-pointer were to be enabled by default, -momit-leaf-frame-pointer should not have any effect. This is rather strange....

I've looked into this a bit further...

Acovea performs all compiles with *at least* -O1; therefore, on the P4, the -fomit-frame-pointer option is implicitly not enabled. This allows -momit-leaf-frame-pointer to affect code generation.

--
Scott Robert Ladd
Coyote Gulch Productions (http://www.coyotegulch.com)
Software Invention for High-Performance Computing
In development: Alex, a database for common folk

References:
- Optimization: Conclusions from Evolutionary Analysis
  - From: Scott Robert Ladd
- Re: Optimization: Conclusions from Evolutionary Analysis
  - From: Dan Nicolaescu

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