[all-commits] [llvm/llvm-project] 66de26: GlobalISel: Fix matchEqualDefs for instructions wi...

[petar-avramovic via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 66de26b1f9ecf22193aea2edfac03db03f138feb
      https://github.com/llvm/llvm-project/commit/66de26b1f9ecf22193aea2edfac03db03f138feb
  Author: Petar Avramovic <Petar.Avramovic at amd.com>
  Date:   2021-08-05 (Thu, 05 Aug 2021)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/postlegalizercombiner-select.mir

  Log Message:
  -----------
  GlobalISel: Fix matchEqualDefs for instructions with multiple defs

Instructions that produceSameValue produce same values for operands with
same index. matchEqualDefs used to return true for any two values from
different instructions that produce same values. Fix this by checking if
values are defined by operands with the same index.

Differential Revision: https://reviews.llvm.org/D107362