[PATCH] [SimplifyCFG] Double check for constant expression domination

[Nick Lewycky]

hfinkel at anl.gov wrote:
> This does not seem like the right fix. What is isSafeToSpeculativelyExecute checking that C->canTrap is not checking? I'd think that fixing C->canTrap is the right way to address this problem.

I'd also like to make a plea for a testcase here. If we had a testcase, 
we could see for ourselves what isSafeToSpeculativelyExecute is checking 
that c->canTrap isn't.

>
> http://reviews.llvm.org/D5459
>
>
>
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http://reviews.llvm.org/D5459