[PATCH] D118351: [AMDGPU][GlobalISel] Code quality: don't expand G_BUILD_VECTOR_TRUNC if not neccessary

[Mateja Marjanovic via Phabricator via llvm-commits]

matejam updated this revision to Diff 405924.
matejam retitled this revision from "[AMDGPU][GlobalISel] Code quality: remove unnecessary or, and, shift instructions" to "[AMDGPU][GlobalISel] Code quality: don't expand G_BUILD_VECTOR_TRUNC if not neccessary".
matejam edited the summary of this revision.
matejam added a comment.
Herald added a subscriber: wenlei.

Instead of using a combiner in the legalizer, change the implementation of apply mapping for G_BUILD_VECTOR_TRUNC in regbankselect.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D118351/new/

https://reviews.llvm.org/D118351

Files:
  llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/combine-fma-add-mul.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/combine-or-and-shl.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/combine-or-and-shl.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.atomic.dim.a16.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.gather4.a16.dim.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.load.1d.d16.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.load.3d.a16.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.sample.g16.ll
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.image.sample.g16.a16.dim.ll

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