[all-commits] [llvm/llvm-project] 45e1a2: GlobalISel: Make known bits/alignment API more con...

[Matt Arsenault via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 45e1a22a92bf2c33336ccc02ea4fa3996f60252b
      https://github.com/llvm/llvm-project/commit/45e1a22a92bf2c33336ccc02ea4fa3996f60252b
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2020-06-05 (Fri, 05 Jun 2020)

  Changed paths:
    M llvm/include/llvm/CodeGen/GlobalISel/GISelKnownBits.h
    M llvm/include/llvm/CodeGen/TargetLowering.h
    M llvm/lib/CodeGen/GlobalISel/GISelKnownBits.cpp
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-load-private.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-store-private.mir

  Log Message:
  -----------
  GlobalISel: Make known bits/alignment API more consistent

Just computing the alignment makes sense without caring about the
general known bits, such as for non-integral pointers. Separate the
two and start calling into the TargetLowering hooks for frame indexes.

Start calling the TargetLowering implementation for FrameIndexes,
which improves the AMDGPU matching for stack addressing modes. Also
introduce a new hook for returning known alignment of target
instructions. For AMDGPU, it would be useful to report the known
alignment implied by certain intrinsic calls.

Also stop using MaybeAlign.