No.
> which use them, and when they're stable in between.
No.
> (E.g., subtract instructions set condition codes, which can optimise away a
> following compare instruction if they're related).
No.
> Actually, I don't think "cc" as a clobber makes any difference for GCC &
> x86 at the moment, because I think cc setters always precede the
Yes.
> instructions that use them (on x86). But I wouldn't rely on it, and I
> saw some discussion of relaxing this in the x86 machine description.
Yes. Uh-oh, millions of asms breaking, AGAIN :)
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---==---(_)__ __ ____ __ Marc Lehmann +--
--==---/ / _ \/ // /\ \/ / pcg@goof.com |e|
-=====/_/_//_/\_,_/ /_/\_\ --+
The choice of a GNU generation |
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