[all-commits] [llvm/llvm-project] 843941: [IR] Let ConstantVector::getSplat use poison inste...

[david-arm via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8439415333198406124de641c84591d573a29bd6
      https://github.com/llvm/llvm-project/commit/8439415333198406124de641c84591d573a29bd6
  Author: David Sherwood <david.sherwood at arm.com>
  Date:   2021-08-10 (Tue, 10 Aug 2021)

  Changed paths:
    M llvm/lib/IR/Constants.cpp
    M llvm/test/Transforms/CodeGenPrepare/AArch64/gather-scatter-opt-inseltpoison.ll
    M llvm/test/Transforms/CodeGenPrepare/AArch64/gather-scatter-opt.ll
    M llvm/test/Transforms/InstCombine/div.ll
    M llvm/test/Transforms/InstCombine/fdiv.ll
    M llvm/test/Transforms/InstCombine/fmul.ll
    M llvm/test/Transforms/InstCombine/select.ll
    M llvm/test/Transforms/InstCombine/sub.ll
    M llvm/test/Transforms/InstCombine/zext-ctlz-trunc-to-ctlz-add.ll
    M llvm/test/Transforms/InstSimplify/ConstProp/vscale-inseltpoison.ll
    M llvm/test/Transforms/InstSimplify/ConstProp/vscale.ll
    M llvm/test/Transforms/InstSimplify/cmp-vec-fast-path.ll
    M llvm/test/Transforms/InstSimplify/gep.ll
    M llvm/test/Transforms/InstSimplify/vscale-inseltpoison.ll
    M llvm/test/Transforms/InstSimplify/vscale.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/first-order-recurrence.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/scalable-strict-fadd.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-gather-scatter.ll
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-widen-phi.ll
    M llvm/test/Transforms/LoopVectorize/scalable-first-order-recurrence.ll
    M llvm/test/Transforms/LoopVectorize/scalable-inductions.ll

  Log Message:
  -----------
  [IR] Let ConstantVector::getSplat use poison instead of undef

This patch updates ConstantVector::getSplat to use poison instead
of undef when using insertelement/shufflevector to splat.

This follows on from D93793.

Differential Revision: https://reviews.llvm.org/D107751