[all-commits] [llvm/llvm-project] 0988bf: [LLVM-Reduce] - Null pointer handling during disti...

[Robert Barinov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0988bf8d75de2f55484db02391db5165e7b7d37d
      https://github.com/llvm/llvm-project/commit/0988bf8d75de2f55484db02391db5165e7b7d37d
  Author: Robert Barinov <robert.barinov at intel.com>
  Date:   2024-11-25 (Mon, 25 Nov 2024)

  Changed paths:
    A llvm/test/tools/llvm-reduce/distinct-dimetadata-nullptr.ll
    M llvm/tools/llvm-reduce/deltas/ReduceDistinctMetadata.cpp

  Log Message:
  -----------
  [LLVM-Reduce] - Null pointer handling during distinct metadata reduction (#117570)

Some distinct metadata nodes, e.g DICompileUnit, have implicit nullptrs
inside them. Iterating over them with dyn_cast leads to a crash, change
the behavior so that the nullptr operands are skipped.

Add the test distinct-metadata-nullptr.ll which will crash if null
pointers are not handled correctly.



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