[all-commits] [llvm/llvm-project] e414ba: [ValueTracking] Shufflevector produces poison rath...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e414ba33b44971d47d24d75b7da94898d2cc8bde
      https://github.com/llvm/llvm-project/commit/e414ba33b44971d47d24d75b7da94898d2cc8bde
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2023-12-21 (Thu, 21 Dec 2023)

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

  Log Message:
  -----------
  [ValueTracking] Shufflevector produces poison rather than undef

Shufflevector semantics have changed so that poison mask elements
return poison rather than undef. Reflect this in the
canCreateUndefOrPoison() implementation.