commit 1c08e4864e2ffe0e89a2e170b11d86a11e94b851
author David Sherwood <david.sherwood@arm.com> Tue Mar 23 16:28:09 2021 +0000
committer Copybara-Service <copybara-worker@google.com> Fri Apr 16 12:54:51 2021 -0700
tree b862a69513470d984f3a23914a5568df17f756e5
parent 9168486352af9d8a120ff2e74bdbda4e6eec84c7

[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

GitOrigin-RevId: ea14df695ebde3f5bdd5ba7548d3d49e8f1c4411