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Re: Thoughts on memcmp expansion (PR43052)

From: Bernd Schmidt <bschmidt at redhat dot com>
To: Richard Biener <richard dot guenther at gmail dot com>
Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, Nick Clifton <nickc at redhat dot com>, Joseph Myers <joseph at codesourcery dot com>
Date: Fri, 13 May 2016 15:13:21 +0200
Subject: Re: Thoughts on memcmp expansion (PR43052)
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On 05/13/2016 03:07 PM, Richard Biener wrote:

On Fri, May 13, 2016 at 3:05 PM, Bernd Schmidt <bschmidt@redhat.com> wrote:

Huh? Can you elaborate?


When you have a builtin taking a size in bytes then a byte is 8 bits,
not BITS_PER_UNIT bits.

That makes no sense to me. I think the definition of a byte depends onthe machine (hence the term "octet" was coined to be unambiguous). Also,such a definition would seem to imply that machines with 10-bit bytescannot implement memcpy or memcmp.


Joseph, can you clarify the standard's meaning here?


Bernd

Follow-Ups:
- Re: Thoughts on memcmp expansion (PR43052)
  - From: Joseph Myers

References:
- Re: Thoughts on memcmp expansion (PR43052)
  - From: Richard Biener
- Re: Thoughts on memcmp expansion (PR43052)
  - From: Bernd Schmidt
- Re: Thoughts on memcmp expansion (PR43052)
  - From: Richard Biener
- Re: Thoughts on memcmp expansion (PR43052)
  - From: Bernd Schmidt
- Re: Thoughts on memcmp expansion (PR43052)
  - From: Richard Biener
- Re: Thoughts on memcmp expansion (PR43052)
  - From: Bernd Schmidt
- Re: Thoughts on memcmp expansion (PR43052)
  - From: Richard Biener

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