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Re: Supporting 'MAC' instruction on gcc v4.1.1

From: Geert Bosch <bosch at adacore dot com>
To: Andrew Haley <aph-gcc at littlepinkcloud dot COM>
Cc: Rahul <rah dot v dot ragh at gmail dot com>, gcc at gcc dot gnu dot org
Date: Fri, 11 May 2007 12:02:04 -0400
Subject: Re: Supporting 'MAC' instruction on gcc v4.1.1
References: <cf15b2ee0705110526t7e38b910lda4e58d375c4a9e4@mail.gmail.com> <2FE651C5-8A73-4248-AC9F-3FE2941811E5@adacore.com> <17988.35940.556370.969607@zebedee.pink>

On May 11, 2007, at 11:31, Andrew Haley wrote:

It shouldn't have.  All args are ints, and if we are assuming (as the
C standard says) that int overflow is undefined, the transformation is
valid.


Aarghh..! I even quoted the part that mentioned ints, but still thought
it was about float. Sure, for int this should be fine. Undefinedness in
C also isn't really relevant here. Sorry for the noise.

-Geert

References:
- Supporting 'MAC' instruction on gcc v4.1.1
  - From: Rahul
- Re: Supporting 'MAC' instruction on gcc v4.1.1
  - From: Geert Bosch
- Re: Supporting 'MAC' instruction on gcc v4.1.1
  - From: Andrew Haley

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