[all-commits] [llvm/llvm-project] 6f01cb: Handle `select` in programUndefinedIfPoison.

[Justin Lebar via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6f01cb91d763f740339683e1bde029e9f9f3bdf4
      https://github.com/llvm/llvm-project/commit/6f01cb91d763f740339683e1bde029e9f9f3bdf4
  Author: Justin Lebar <justin.lebar at gmail.com>
  Date:   2023-04-28 (Fri, 28 Apr 2023)

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

  Log Message:
  -----------
  Handle `select` in programUndefinedIfPoison.

If both the true and false operands of a `select` are poison, then the `select`
is poison.

Differential Revision: https://reviews.llvm.org/D149427