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Re: [patch] Fix PR40021: miscompile of BLAS (hence tonto and gamess)


Michael Matz wrote:
> Hi,
> 
> 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.

Paolo


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