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Re: Simple contribution please?


From: Richard Braun
Subject: Re: Simple contribution please?
Date: Wed, 17 Aug 2016 14:55:35 +0200
User-agent: Mutt/1.5.23 (2014-03-12)

On Wed, Aug 17, 2016 at 10:50:56AM +0200, Samuel Thibault wrote:
> Mmm. This is a clobber, so it's supposed to indicate what is written,
> not what is read :) But I agree with the "move" rationale, let's be safe
> (it doesn't really matter here, there's a memory compiler barrier at the
> function call anyway).

My thinking was rather to let gcc know that memory is being read so
that it wouldn't generate instructions that might change it in
parallel, although I don't think it's possible considering the
instructions actually used.

-- 
Richard Braun



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