[all-commits] [llvm/llvm-project] da4a2f: [AArch64ISelLowering] Fix null pointer access in p...

[huihzhang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: da4a2fd832a5b2e97f2bb854ab22766db910c994
      https://github.com/llvm/llvm-project/commit/da4a2fd832a5b2e97f2bb854ab22766db910c994
  Author: Huihui Zhang <huihuiz at quicinc.com>
  Date:   2021-09-10 (Fri, 10 Sep 2021)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    A llvm/test/CodeGen/AArch64/aarch64-sve-and-combine-crash.ll

  Log Message:
  -----------
  [AArch64ISelLowering] Fix null pointer access in performSVEAndCombine.

When combining 'and' of an unsigned unpack and shuffle instruction,
bail early if shuffle is not constructed from a constant integer.

Reviewed By: paulwalker-arm

Differential Revision: https://reviews.llvm.org/D109556