[all-commits] [llvm/llvm-project] ba8911: [ValueTracking] Fix analyses to update CxtI to be ...

[Juneyoung Lee via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: ba8911d560ef85cae55fc45440afa3bef374f1e0
      https://github.com/llvm/llvm-project/commit/ba8911d560ef85cae55fc45440afa3bef374f1e0
  Author: Juneyoung Lee <aqjune at gmail.com>
  Date:   2020-09-28 (Mon, 28 Sep 2020)

  Changed paths:
    M llvm/lib/Analysis/ValueTracking.cpp
    M llvm/unittests/Analysis/ValueTrackingTest.cpp

  Log Message:
  -----------
  [ValueTracking] Fix analyses to update CxtI to be phi's incoming edges' terminators

It was mentioned that D88276 that when a phi node is visited, terminators at their incoming edges should be used for CtxI.
This is a patch that makes two functions (ComputeNumSignBitsImpl, isGuaranteedNotToBeUndefOrPoison) to do so.

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D88360