[all-commits] [llvm/llvm-project] 49e463: [IR] Constant::getAggregateElement - early-out for...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 49e463ff803d144bec510d6c1e061aafbf3b27cf
      https://github.com/llvm/llvm-project/commit/49e463ff803d144bec510d6c1e061aafbf3b27cf
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2020-11-24 (Tue, 24 Nov 2020)

  Changed paths:
    M llvm/lib/IR/Constants.cpp
    M llvm/test/Transforms/InstCombine/vscale_extractelement.ll

  Log Message:
  -----------
  [IR] Constant::getAggregateElement - early-out for ScalableVectorType

We can't call getNumElements() for ScalableVectorType types - just bail for now, although ConstantAggregateZero/UndefValue could return a reasonable value.

Fixes crash shown in OSS-Fuzz #25272 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25272