[all-commits] [llvm/llvm-project] da5f45: [ConstantFolding] Preserve nowrap flags in gep of ...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: da5f45f5937d3cde4ff76aeeb208e72ee504baaf
      https://github.com/llvm/llvm-project/commit/da5f45f5937d3cde4ff76aeeb208e72ee504baaf
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2024-06-11 (Tue, 11 Jun 2024)

  Changed paths:
    M llvm/lib/Analysis/ConstantFolding.cpp
    M llvm/test/Transforms/InstCombine/getelementptr.ll

  Log Message:
  -----------
  [ConstantFolding] Preserve nowrap flags in gep of gep fold

A caveat here is that we can only preserve nusw if the offset
additions did not overflow.

Proofs: https://alive2.llvm.org/ce/z/u56z_u



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