[all-commits] [llvm/llvm-project] d71ad4: [SLP]Fix insertpoint of the extractellements instr...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d71ad4108056d685f48407447095d8d92fd7685d
      https://github.com/llvm/llvm-project/commit/d71ad4108056d685f48407447095d8d92fd7685d
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2022-10-12 (Wed, 12 Oct 2022)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    A llvm/test/Transforms/SLPVectorizer/X86/extractelement-insertpoint.ll

  Log Message:
  -----------
  [SLP]Fix insertpoint of the extractellements instructions to avoid reshuffle crash.

Need to set the insertpoint for extractelement to point to the first
instruction in the node to avoid possible crash during external uses
combine  process. Without it we may endup with the incorrect
transformation.

Differential Revision: https://reviews.llvm.org/D135591