[PATCH] D146737: [AMDGPU] Default component broadcast store

[Mateja Marjanovic via Phabricator via llvm-commits]

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For image and buffer stores the default behaviour on GFX11 and
older is to set all unset components to zero. So if we pass
only X component it will be the same as X000, or XY same as XY00.

This patch simplifies the passed vector of components in InstCombine
pass by removing elements from the end that are equal to zero.

For image intrinsics it also trims DMask if necessary.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D146737

Files:
  llvm/lib/Target/AMDGPU/AMDGPUInstCombineIntrinsic.cpp
  llvm/test/Transforms/InstCombine/AMDGPU/amdgcn-intrinsics.ll
  llvm/test/Transforms/InstCombine/AMDGPU/amdgcn-simplify-image-buffer-stores.ll

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