[PATCH] D92270: [ConstantFold] Fold more operations to poison
Juneyoung Lee via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Mon Nov 30 06:05:57 PST 2020
aqjune added a comment.
In D92270#2422661 <https://reviews.llvm.org/D92270#2422661>, @uabelho wrote:
> Should langref also be updated to describe this? Or does it already?
> I just found this
> "An instruction that depends on a poison value, produces a poison value itself."
> here
> http://llvm.org/docs/LangRef.html#poison-values
I think "Values other than phi nodes and select instructions depend on their operands." was supposed to say that. :)
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https://reviews.llvm.org/D92270/new/
https://reviews.llvm.org/D92270
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