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Re: PATCH: Fix 20000724-1.c
- To: Jan Hubicka <jh at suse dot cz>
- Subject: Re: PATCH: Fix 20000724-1.c
- From: Richard Henderson <rth at redhat dot com>
- Date: Tue, 1 May 2001 10:01:32 -0700
- Cc: Mark Mitchell <mark at codesourcery dot com>, gcc-patches at gcc dot gnu dot org
- References: <20010430075941M.mitchell@codesourcery.com> <20010430094928.B8430@redhat.com> <20010430105529F.mitchell@codesourcery.com> <20010430110409.B8491@redhat.com> <20010501133814.A11934@atrey.karlin.mff.cuni.cz>
On Tue, May 01, 2001 at 01:38:14PM +0200, Jan Hubicka wrote:
> Imagine that you take address of stack slot into register,
> then read using that register and then deallocate. I don't
> see any way scheduler will add dependancy between deallocate
> and read.
Yes, I did notice and comment on this problem yesterday in one
of the messages on this thread. I don't know what to do about it.
> > Worse come to worse, it might make sense to not do stack
> > comhining across volatile asms either.
> Why exactly?
As a last resort to fix the problem. It wasn't necessary.
r~