[PATCH] D87965: [InstCombine] replace phi values from unreachable blocks with 'undef'

[Sanjay Patel via Phabricator via llvm-commits]

spatel marked an inline comment as done.
spatel added inline comments.


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Comment at: llvm/lib/Transforms/InstCombine/InstructionCombining.cpp:2816
 
+    replaceInstUsesWith(*Prev, UndefValue::get(Prev->getType()));
     eraseInstFromFunction(*Prev);
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lebedev.ri wrote:
> This needs a motivational comment
Thanks! Will add comment and change the patch title/description on commit.


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  https://reviews.llvm.org/D87965/new/

https://reviews.llvm.org/D87965