[PATCH] D133891: [SLP]Improve isUndefVector function by adding insertelement analysis.

[Steven Johnson via Phabricator via llvm-commits]

srj added a comment.

Running in a different environment with a bit more runtime checking gives me this:

  F0000 00:00:1663704938.984352  305116 debugallocation.cc:397] RAW: memory stomping bug: a word after object at 0x26193e2a84f0 has been corrupted
      @     0x55c15c135380  absl::raw_log_internal::RawLog()
      @     0x55c15c028832  MallocBlock::CheckLocked()
      @     0x55c15c028577  MallocBlock::CheckAndClear()
      @     0x55c15c1bb892  __libc_free
      @     0x55c15aed36c2  llvm::slpvectorizer::BoUpSLP::getEntryCost()
      @     0x55c15aed9c83  llvm::slpvectorizer::BoUpSLP::getTreeCost()
      @     0x55c15aeee58c  llvm::SLPVectorizerPass::tryToVectorizeList()
      @     0x55c15aef26e5  llvm::SLPVectorizerPass::vectorizeInsertElementInst()
      @     0x55c15aef294b  llvm::SLPVectorizerPass::vectorizeSimpleInstructions()
      @     0x55c15aeeaec7  llvm::SLPVectorizerPass::vectorizeChainsInBlock()
      @     0x55c15aee8e30  llvm::SLPVectorizerPass::runImpl()
      @     0x55c15aee872a  llvm::SLPVectorizerPass::run()


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D133891/new/

https://reviews.llvm.org/D133891