[PATCH] D55655: [DAGCombiner] after simplifying demanded elements of vector operand of extract, revisit the extract

[Sanjay Patel via Phabricator via llvm-commits]

spatel reopened this revision.
spatel added a comment.
This revision is now accepted and ready to land.

Reverted at rL349056 <https://reviews.llvm.org/rL349056> because:

  ==42943==ERROR: AddressSanitizer: use-after-poison on address 0x6210000f2a10 at pc 0x0000056013aa bp 0x7ffce91a7550 sp 0x7ffce91a7548
  READ of size 8 at 0x6210000f2a10 thread T0
      #0 0x56013a9 in use_empty /b/sanitizer-x86_64-linux-fast/build/llvm/include/llvm/CodeGen/SelectionDAGNodes.h:703:35
      #1 0x56013a9 in visitEXTRACT_VECTOR_ELT /b/sanitizer-x86_64-linux-fast/build/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:15704

What is the proper way to check for node deadness is here?


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D55655/new/

https://reviews.llvm.org/D55655