[all-commits] [llvm/llvm-project] 8f108c: Revert "[SLP] Optionally preserve MemorySSA"

[Philip Reames via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8f108c32bcd52cb03d3fb36d09f5aa78d35ec6c2
      https://github.com/llvm/llvm-project/commit/8f108c32bcd52cb03d3fb36d09f5aa78d35ec6c2
  Author: Philip Reames <listmail at philipreames.com>
  Date:   2022-03-18 (Fri, 18 Mar 2022)

  Changed paths:
    M llvm/include/llvm/Transforms/Vectorize/SLPVectorizer.h
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp

  Log Message:
  -----------
  Revert "[SLP] Optionally preserve MemorySSA"

This reverts commit 1cfa986d68e2f04854ef30c432b8aa28e13a9706.  See https://github.com/llvm/llvm-project/issues/54256 for why I'm discontinuing the project.

Seperately, it turns out that while this patch does correctly preserve MSSA, it's correct only at the end of the pass; not between vectorization attempts.  Even if we decide to resurrect this, we'll need to fix that before reapplying.