[PATCH] D104410: GlobalISel/Utils: Add util function and matcher for constant splat

[Petar Avramovic via Phabricator via llvm-commits]

Petar.Avramovic created this revision.
Petar.Avramovic added reviewers: foad, arsenm, aemerson, paquette.
Herald added subscribers: hiraditya, rovka.
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Herald added subscribers: llvm-commits, wdng.
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Add flexible function for constant splat matching. Able to recognize
constant splat that was padded with undefs. Add generic matcher for
splat constants (integer, floating point, allow undef or not) and
one specialized for floating point type.


https://reviews.llvm.org/D104410

Files:
  llvm/include/llvm/CodeGen/GlobalISel/MIPatternMatch.h
  llvm/include/llvm/CodeGen/GlobalISel/Utils.h
  llvm/lib/CodeGen/GlobalISel/Utils.cpp
  llvm/unittests/CodeGen/GlobalISel/PatternMatchTest.cpp

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