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Re: RFA: New pass to delete unexecutable paths in the CFG
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On 11/07/11 08:54, Tom Tromey wrote:
>>>>>> "Jeff" == Jeff Law <law@redhat.com> writes:
>
> Jeff> So, presumably there's no way to know we're throwing to Jeff>
> NullPointerException from the exception information attached to
> the Jeff> statement or BB? If not I could disable if the statement
> with the Jeff> memory op throws anywhere. It's not ideal, but
> conservatively correct.
>
> I don't know the answer, but Java uses -fnon-call-exceptions, so
> maybe gating it on this would be appropriate. Or, adding a new
> flag that the Java FE sets would also be fine by me.
I'll poke at it a little; I suspect the easiest thing to do will be to
either avoid this entirely if -fnon-call-exceptions or avoid if
there're an abnormal edge leading out of the block.
Jeff
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