[all-commits] [llvm/llvm-project] ae978b: [LoopFlatten] Recognise gep+gep (#72515)

[John Brawn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ae978baaf6cc5566036b89ceaadcabb47361ba2f
      https://github.com/llvm/llvm-project/commit/ae978baaf6cc5566036b89ceaadcabb47361ba2f
  Author: John Brawn <john.brawn at arm.com>
  Date:   2024-01-10 (Wed, 10 Jan 2024)

  Changed paths:
    M llvm/include/llvm/IR/PatternMatch.h
    M llvm/lib/Transforms/Scalar/LoopFlatten.cpp
    A llvm/test/Transforms/LoopFlatten/loop-flatten-gep.ll

  Log Message:
  -----------
  [LoopFlatten] Recognise gep+gep (#72515)

Now that InstCombine canonicalises add+gep to gep+gep, LoopFlatten needs
to recognise (gep (gep ptr (i*M)), j) as being something it can
optimise.