[all-commits] [llvm/llvm-project] 2d7bab: [InstCombine] Always create new GEPs when swapping...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2d7bab666f5a71a70da0ed7925fda5ce634d21e5
      https://github.com/llvm/llvm-project/commit/2d7bab666f5a71a70da0ed7925fda5ce634d21e5
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2022-05-30 (Mon, 30 May 2022)

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

  Log Message:
  -----------
  [InstCombine] Always create new GEPs when swapping GEPs

As the long explanatory comment attests, performing the modification
in place is pretty tricky. Drop this unnecessary complexity and
always create new instructions.

This should be NFC-ish, but can probably cause difference due to
worklist order.