[all-commits] [llvm/llvm-project] ea14df: [SVE][LoopVectorize] Fix crash in InnerLoopVectori...

[david-arm via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ea14df695ebde3f5bdd5ba7548d3d49e8f1c4411
      https://github.com/llvm/llvm-project/commit/ea14df695ebde3f5bdd5ba7548d3d49e8f1c4411
  Author: David Sherwood <david.sherwood at arm.com>
  Date:   2021-04-15 (Thu, 15 Apr 2021)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    A llvm/test/Transforms/LoopVectorize/AArch64/sve-widen-phi.ll

  Log Message:
  -----------
  [SVE][LoopVectorize] Fix crash in InnerLoopVectorizer::widenPHIInstruction

There were a few places in widenPHIInstruction where calculations of
offsets were failing to take the runtime calculation of VF into
account for scalable vectors. I've fixed those cases in this patch
as well as adding an assert that we should not be scalarising for
scalable vectors.

Tests are added here:

  Transforms/LoopVectorize/AArch64/sve-widen-phi.ll

Differential Revision: https://reviews.llvm.org/D99254