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Commit 25ce1e04 authored by Juneyoung Lee's avatar Juneyoung Lee
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[ValueTracking] Add UndefOrPoison/Poison-only version of relevant functions 

This patch adds isGuaranteedNotToBePoison and programUndefinedIfUndefOrPoison.

isGuaranteedNotToBePoison will be used at D75808. The latter function is used at isGuaranteedNotToBePoison.

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D84242
parent 455cce3e
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