[all-commits] [llvm/llvm-project] b93287: [InstCombine] Add mul(x, x) tests showing miscompile

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b93287754bfaaea2b15d87cd61ea153e2af69a4a
      https://github.com/llvm/llvm-project/commit/b93287754bfaaea2b15d87cd61ea153e2af69a4a
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2022-02-06 (Sun, 06 Feb 2022)

  Changed paths:
    M llvm/test/Transforms/InstCombine/mul-masked-bits.ll

  Log Message:
  -----------
  [InstCombine] Add mul(x,x) tests showing miscompile

As raised by @efriedma on D117995 - the source must not be undef to demand any bits in mul(x,x) other than bit[1]

https://alive2.llvm.org/ce/z/Cxkjen