[PATCH] D125516: [GlobalISel] Handle constant splat in funnel shift combine

[Abinav Puthan Purayil via Phabricator via llvm-commits]

abinavpp created this revision.
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This change adds the constant splat versions of m_ICst() (by using
getBuildVectorConstantSplat()) and uses it in
matchOrShiftToFunnelShift(). The getBuildVectorConstantSplat() name is
shortened to getIConstantSplatVal() so that the *SExtVal() version would
have a more compact name.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D125516

Files:
  llvm/include/llvm/CodeGen/GlobalISel/MIPatternMatch.h
  llvm/include/llvm/CodeGen/GlobalISel/Utils.h
  llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
  llvm/lib/CodeGen/GlobalISel/Utils.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/combine-fsh.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/combine-rot.mir
  llvm/unittests/CodeGen/GlobalISel/PatternMatchTest.cpp

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