[PATCH] D147567: [VPlan] Only create extracts for recurrence exits if there are live-outs.

[Florian Hahn via Phabricator via llvm-commits]

fhahn created this revision.
fhahn added reviewers: Ayal, gilr, rengolin.
Herald added subscribers: StephenFan, tschuett, psnobl, rogfer01, bollu, hiraditya.
Herald added a project: All.
fhahn requested review of this revision.
Herald added subscribers: pcwang-thead, vkmr.
Herald added a project: LLVM.

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 <https://reviews.llvm.org/D147472>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D147567

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

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