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Re: [patch] Fix PR40021: miscompile of BLAS (hence tonto and gamess)
Hi,
On Wed, 6 May 2009, Paolo Bonzini wrote:
> > as detailed in the bugreport we can end up in a situation where a
> > basic block with just one successor edge ends with multiple jump
> > instructions to the same target (only during expansion itself). We
> > are confused if we want to insert instructions on such edge and insert
> > them before the last jump, but after the others, which later leads to
> > miscompilations as the inserted instruction isn't ru then.
>
> Please file a missed optimization though because the if could be
> simplified on the tree level.
Richi hacked on that already, but to not forget about it: PR40052