[all-commits] [llvm/llvm-project] c061e5: [CodeGen] Fix warnings in sve-vector-splat.ll and ...

[david-arm via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: c061e56e880a20488e0f7e6cf9975aa24b83067c
      https://github.com/llvm/llvm-project/commit/c061e56e880a20488e0f7e6cf9975aa24b83067c
  Author: David Sherwood <david.sherwood at arm.com>
  Date:   2020-07-07 (Tue, 07 Jul 2020)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
    M llvm/test/CodeGen/AArch64/sve-trunc.ll
    M llvm/test/CodeGen/AArch64/sve-vector-splat.ll

  Log Message:
  -----------
  [CodeGen] Fix warnings in sve-vector-splat.ll and sve-trunc.ll

This patch fixes all remaining warnings in:

  llvm/test/CodeGen/AArch64/sve-trunc.ll
  llvm/test/CodeGen/AArch64/sve-vector-splat.ll

I hit some warnings related to getCopyPartsToVector. I fixed two
issues:

1. In widenVectorToPartType() we assumed that we'd always be
using BUILD_VECTOR nodes to expand from one vector type to another,
which is incorrect for scalable vector types. I've fixed this for now
by simply bailing out immediately for scalable vectors.
2. In getCopyToPartsVector() I've changed the code to compare
the element counts of different types.

Differential Revision: https://reviews.llvm.org/D83028