[PATCH] D125070: [InstCombine] Simplify chain of GEP with constant indices

[William Junda Huang via Phabricator via llvm-commits]

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Detects a chain of GEP where the first and last instructions
have constant indices, and combines them into one if such transformation
is valid


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D125070

Files:
  llvm/lib/Transforms/InstCombine/InstCombineInternal.h
  llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
  llvm/test/Transforms/InstCombine/gep-merge-constant-indices.ll
  llvm/test/Transforms/LoopVectorize/AArch64/vector-reverse-mask4.ll
  llvm/test/Transforms/LoopVectorize/interleaved-accesses.ll

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