[PATCH] D125438: [InstCombine] NEW Baseline tests for InstCombine optimization to merge GEP instructions with constant indices

[William Junda Huang via Phabricator via llvm-commits]

huangjd created this revision.
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Splitted the merge constant-indexed GEP optimization into two smaller transformations: 1. Merging GEP of GEP if both are constant-indexed. 2. Swapping constant indexed GEP in a chain of (non-constant) GEP to the end, so that 1 can be applied repeatedly.
There is existing code to partially  handle transformation 1, but it only deals with limited cases

Unit tests are breaking down into two parts for the 2 transformations.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D125438

Files:
  llvm/test/Transforms/InstCombine/gep-canonicalize-constant-indices.ll
  llvm/test/Transforms/InstCombine/gep-merge-constant-indices.ll

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