[all-commits] [llvm/llvm-project] d78345: Reland [GlobalISel] Start using vectors in GISelKn...

[petar-avramovic via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d7834556b7ad3bbfc03ed5dd8d875d1d73c674c2
      https://github.com/llvm/llvm-project/commit/d7834556b7ad3bbfc03ed5dd8d875d1d73c674c2
  Author: Petar Avramovic <Petar.Avramovic at amd.com>
  Date:   2021-03-04 (Thu, 04 Mar 2021)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/GISelKnownBits.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/combine-urem-pow-2.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/urem.i32.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/urem.i64.ll
    M llvm/unittests/CodeGen/GlobalISel/CMakeLists.txt
    M llvm/unittests/CodeGen/GlobalISel/KnownBitsTest.cpp
    A llvm/unittests/CodeGen/GlobalISel/KnownBitsVectorTest.cpp

  Log Message:
  -----------
  Reland [GlobalISel] Start using vectors in GISelKnownBits

This is recommit of 4c8fb7ddd6fa49258e0e9427e7345fb56ba522d4.
MIR in one unit test had mismatched types.

For vectors we consider a bit as known if it is the same for all demanded
vector elements (all elements by default). KnownBits BitWidth for vector
type is size of vector element. Add support for G_BUILD_VECTOR.
This allows combines of urem_pow2_to_mask in pre-legalizer combiner.

Differential Revision: https://reviews.llvm.org/D96122