[llvm-dev] Tail merging "undef" with a defined register: wrong code

Krzysztof Parzyszek via llvm-dev llvm-dev at lists.llvm.org
Fri Jul 28 14:17:37 PDT 2017

On 7/28/2017 4:00 PM, Quentin Colombet wrote:
> I am having a hard time seeing the problem from the example, shouldn’t 
> we just put an implicit_def at the end of bb.0?

That should work actually, even in the general case. I overlooked 
something when I first said it wouldn't.


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