[all-commits] [llvm/llvm-project] 0f0905: [NFC][InstCombine] Add test for one-use one-index ...

[clin111 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0f0905605e52887eb05a08df4e3c89c617efaa70
      https://github.com/llvm/llvm-project/commit/0f0905605e52887eb05a08df4e3c89c617efaa70
  Author: Chang-Sun Lin, Jr <chang-sun.lin.jr at intel.com>
  Date:   2021-08-19 (Thu, 19 Aug 2021)

  Changed paths:
    M llvm/test/Transforms/InstCombine/gep-combine-loop-invariant.ll

  Log Message:
  -----------
  [NFC][InstCombine] Add test for one-use one-index geps in different loops


  Commit: 9cae598f8b647bccab357c4457a67ec0ed424611
      https://github.com/llvm/llvm-project/commit/9cae598f8b647bccab357c4457a67ec0ed424611
  Author: Chang-Sun Lin, Jr <chang-sun.lin.jr at intel.com>
  Date:   2021-08-19 (Thu, 19 Aug 2021)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
    M llvm/test/Transforms/InstCombine/gep-combine-loop-invariant.ll

  Log Message:
  -----------
  [InstCombine] Avoid folding GEPs across loop boundaries

Folding a GEP from outside to inside a loop will materialize an add where there wasn't an equivalent operation before. Check the containing loops before making this fold.

Reviewed By: lebedev.ri

Differential Revision: https://reviews.llvm.org/D107935


Compare: https://github.com/llvm/llvm-project/compare/33d44b762e65...9cae598f8b64