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Re: Automatic architecture optimization

On Thu, 4 Sep 2003 17:02:44 -0400, Michael Meissner wrote:
Well the -m<xxx> options are done by each port (ie, it is not standardized
across platforms).  Have you considered writing the code to do this and
contributing it?

Perhaps. I'm trying to understand the issues at the moment, and if such an effort is likely to be accepted.

A low tech approach is to use a shell script (maybe even calling it gcc and
putting it in your PATH ahead of the system gcc) that determines the machine
(possibly using uname -p) type and then invokes the real gcc with those
options.  Of the top of my head, something like:

My interest is to have a standard flag (either e.g. -march or -O4 as in xlc on AIX) available in gcc so that software users can compile with more aggressive optimization when appropriate. I'd thus favor internalizing a method similar to your shell script, although necessarily more complicated (uname -p is not always reliable), and probably part of each port.

- Matt

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