[all-commits] [llvm/llvm-project] cb5e3f: [ARM] Prevent large integer VQDMULH pattern crashes

David Green via All-commits all-commits at lists.llvm.org
Sat Sep 18 10:47:19 PDT 2021


  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cb5e3f79592416cc5c1413655eddc641b1dae920
      https://github.com/llvm/llvm-project/commit/cb5e3f79592416cc5c1413655eddc641b1dae920
  Author: David Green <david.green at arm.com>
  Date:   2021-09-18 (Sat, 18 Sep 2021)

  Changed paths:
    M llvm/lib/Target/ARM/ARMISelLowering.cpp
    M llvm/test/CodeGen/Thumb2/mve-vqdmulh.ll

  Log Message:
  -----------
  [ARM] Prevent large integer VQDMULH pattern crashes

Put a limit on the size of constant integers we test when looking for
VQDMULH, to prevent it from crashing from values more than 64bits.




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