[PATCH] D128302: [AArch64][CostModel] Detects that ExtractElement at index is not free in AArch64 when result is used as integer.

[Mingming Liu via Phabricator via llvm-commits]

mingmingl updated this revision to Diff 440759.
mingmingl marked an inline comment as done.
mingmingl added a comment.

In AArch64TargetTransformInfo.cpp, change helper function `isExtractedElementUsedAsInteger` by

1. assert that all users of an instruction are instructions
2. simplify the store operation usage check, since integer could only be directly used as value as it is, the source of store operation (i.e., not the destination to store the value to).
3. require that uitofpinst/sitofpinst is the only use of extract-element if we think the extract-element operation is free.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D128302/new/

https://reviews.llvm.org/D128302

Files:
  llvm/include/llvm/Analysis/TargetTransformInfo.h
  llvm/include/llvm/Analysis/TargetTransformInfoImpl.h
  llvm/include/llvm/CodeGen/BasicTTIImpl.h
  llvm/lib/Analysis/TargetTransformInfo.cpp
  llvm/lib/CodeGen/CodeGenPrepare.cpp
  llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
  llvm/lib/Target/AArch64/AArch64TargetTransformInfo.h
  llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
  llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.h
  llvm/lib/Target/AMDGPU/R600TargetTransformInfo.cpp
  llvm/lib/Target/AMDGPU/R600TargetTransformInfo.h
  llvm/lib/Target/ARM/ARMTargetTransformInfo.cpp
  llvm/lib/Target/ARM/ARMTargetTransformInfo.h
  llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.cpp
  llvm/lib/Target/Hexagon/HexagonTargetTransformInfo.h
  llvm/lib/Target/PowerPC/PPCTargetTransformInfo.cpp
  llvm/lib/Target/PowerPC/PPCTargetTransformInfo.h
  llvm/lib/Target/SystemZ/SystemZTargetTransformInfo.cpp
  llvm/lib/Target/SystemZ/SystemZTargetTransformInfo.h
  llvm/lib/Target/WebAssembly/WebAssemblyTargetTransformInfo.cpp
  llvm/lib/Target/WebAssembly/WebAssemblyTargetTransformInfo.h
  llvm/lib/Target/X86/X86TargetTransformInfo.cpp
  llvm/lib/Target/X86/X86TargetTransformInfo.h
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
  llvm/lib/Transforms/Vectorize/VectorCombine.cpp
  llvm/test/Analysis/CostModel/AArch64/kryo.ll

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