[all-commits] [llvm/llvm-project] 35af27: [VPlan] Only create extracts for recurrence exits ...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 35af27c30a29106dc18c291f0220f429fca15345
      https://github.com/llvm/llvm-project/commit/35af27c30a29106dc18c291f0220f429fca15345
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2023-04-10 (Mon, 10 Apr 2023)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/first-order-recurrence-fold-tail.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/fixed-order-recurrence.ll
    M llvm/test/Transforms/LoopVectorize/SystemZ/predicated-first-order-recurrence.ll
    M llvm/test/Transforms/LoopVectorize/X86/fixed-order-recurrence.ll
    M llvm/test/Transforms/LoopVectorize/first-order-recurrence-complex.ll
    M llvm/test/Transforms/LoopVectorize/first-order-recurrence-multiply-recurrences.ll
    M llvm/test/Transforms/LoopVectorize/first-order-recurrence.ll
    M llvm/test/Transforms/LoopVectorize/induction.ll

  Log Message:
  -----------
  [VPlan] Only create extracts for recurrence exits if there are live-outs.

Move the code to collect live-out earlier and only generate extracts for
exit values if there are any live-outs that use them.

Depends on D147472.

Reviewed By: Ayal

Differential Revision: https://reviews.llvm.org/D147567