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Re: Automatic architecture optimization

Rainer Orth wrote:
prj@po.cwru.edu (Paul Jarc) writes:
... I'd prefer syntax like -march=current or some such. 

Sun cc has -xarch=native, Compaq cc uses -arch host.  Btw., both have also
(as default) -xarch=generic or -arch generic, which is contrary to GCC's
practice (on some platforms) to configure and thus generate code for the
host one happens to bootstrap the compiler on.

Any of -march = {current, host, native, auto} seem fine to me. IMHO, a detail to be resolved when it works.

As another datapoint, IBM's xlc/xlf has -qarch=auto, which is off by default (except at -O4 or -O5) and thus produces code for any Power or PowerPC processor.


- Matt


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