[PATCH] D125511: [InstCombine] Merging constant-indexed GEP of GEP in both directions

[William Junda Huang via Phabricator via llvm-commits]

huangjd updated this revision to Diff 429420.
huangjd added a comment.

Added fallback if merging GEP of GEP with all constant indices fails on both directions, convert the expression into GEP of i8, using the sum of both GEP's offsets


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D125511/new/

https://reviews.llvm.org/D125511

Files:
  llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
  llvm/test/Transforms/InstCombine/gep-merge-constant-indices.ll
  llvm/test/Transforms/InstCombine/opaque-ptr.ll

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