[PATCH] D132344: [LV][SLP] Mark is_fpclass as vectorizable

[Yilong Guo via Phabricator via llvm-commits]

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Fix format and add a test.


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This adds is_fpclass to the list of trivially vectorizable intrinsics, so that LV can vectorize it and SLP can vectorize/scalarize it.

Unlike other intrinsics, the signature of an is_fpclass doesn't use the return type as an overloaded type (i1 @llvm.is.fpclass.f32) -- the return element type is always i1 and the return vector width matches with the first operand.
This patch introduces a new utility function isVectorIntrinsicWithReturnOverloadType, to determine whether an intrinsic uses the return type as the first overloaded type.

Signed-off-by: Yilong Guo <yilong.guo at intel.com>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D132344

Files:
  llvm/include/llvm/Analysis/VectorUtils.h
  llvm/lib/Analysis/VectorUtils.cpp
  llvm/lib/Transforms/Scalar/Scalarizer.cpp
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
  llvm/test/Transforms/LoopVectorize/is_fpclass.ll
  llvm/test/Transforms/SLPVectorizer/X86/intrinsic.ll
  llvm/test/Transforms/Scalarizer/intrinsics.ll

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