[PATCH] D114625: [GlobalISel] Add matchers for constant splat.

[Abinav Puthan Purayil via Phabricator via llvm-commits]

abinavpp created this revision.
abinavpp added reviewers: aemerson, arsenm, foad, paquette.
Herald added subscribers: kerbowa, hiraditya, rovka, nhaehnle, jvesely.
abinavpp requested review of this revision.
Herald added subscribers: llvm-commits, wdng.
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This change exposes isBuildVectorConstantSplat() to the llvm namespace
and uses it to implement the constant splat versions of
m_SpecificICst().

CombinerHelper::matchOrShiftToFunnelShift() can now work with vector
types and CombinerHelper::matchMulOBy2()'s match for a constant splat is
simplified.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D114625

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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