Paolo Carlini - Re: __gcc_cpu_feature (original) (raw)

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• From: Paolo Carlini
• To: Richard Guenther
• Cc: gcc at gcc dot gnu dot org, libstdc++ at gcc dot gnu dot org
• Date: Tue, 08 Nov 2005 13:25:37 +0100
• Subject: Re: __gcc_cpu_feature
• References: <436DDC36.8070308@suse.de> <436E4DF0.3070004@codesourcery.com> <436E51C4.8060108@suse.de> <436E5345.1010504@codesourcery.com> <84fc9c000511061116w1e6b5fb5lb6340a8175a1f084@mail.gmail.com> <437088FB.7040604@suse.de> <84fc9c000511080416u5261edbfgdf9aba5f175b7338@mail.gmail.com>

Richard Guenther wrote:

What would be interesting to know, is what architectures apart from ia32 will likely profit from this?

A quick comment about this: many. It's not only about i386 vs i486+, it's about all the arches that don't have the builtins currently implemented not because of fundamental limitations, but because of lazyness of the maintainers :-) I mean, currently we have nothing more than: i686 (and real, 64-bit, x86_64), ia64, alpha, powerpc, s390. Jakub just contributed sparc in gomp-branch (but, I gather, only new sparcs are amenable to that)

There is also the case of hppa, which, I gather, is uncertain whether or not can have the builtins implemented in the first place.

Paolo.

• References:
  • Call for compiler help/advice: atomic builtins for v3
    * From: Paolo Carlini
  • Re: Call for compiler help/advice: atomic builtins for v3
    * From: Mark Mitchell
  • Re: Call for compiler help/advice: atomic builtins for v3
    * From: Paolo Carlini
  • Re: Call for compiler help/advice: atomic builtins for v3
    * From: Mark Mitchell
  • Re: Call for compiler help/advice: atomic builtins for v3
    * From: Richard Guenther
  • __gcc_cpu_feature
    * From: Paolo Carlini
  • Re: __gcc_cpu_feature
    * From: Richard Guenther