[all-commits] [llvm/llvm-project] 4bf3b7: Recommit "[LICM] Only create load in pre-header wh...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4bf3b7dc929c8288e9e5631978ef060d9140b251
      https://github.com/llvm/llvm-project/commit/4bf3b7dc929c8288e9e5631978ef060d9140b251
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2022-04-13 (Wed, 13 Apr 2022)

  Changed paths:
    M llvm/lib/Transforms/Scalar/LICM.cpp
    M llvm/test/Transforms/LICM/scalar-promote.ll

  Log Message:
  -----------
  Recommit "[LICM] Only create load in pre-header when promoting load."

This reverts the revert commit 1ddc719680c21f3.

This version of the patch sets the initial available value to poison,
which resolves an issue with the SSAUpdater breaking LCSSA form.