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Re: [PATCH]: Misc scheduler changes
On Mon, Dec 10, 2001 at 10:24:07AM -0500, Daniel Berlin wrote:
> The first is fixing a check for constants that only checked CONST_INT.
> The second only considers a store risky if it can trap (the assumption was
> that all stores can trap, but hey, who knows).
These two are ok.
> The third stops us from creating memory dependences on unchanging memory.
> If it can't change, there's no need for a dependence, because it'll never
> conflict with anything else.
This is false. "Unchanging" memory does change. It's rather
mis-named now and I hope it'll go away entirely for gcc 3.2.
Believe what alias.c tells you about it conflicting with other