[PATCH] D111035: [AArch64] Fix incorrect removal of COPYs in AArch64RedundantCopyElimination

[Yuichiro Utsumi via Phabricator via llvm-commits]

yutsumi added a comment.

After my colleague modified llvm/lib/CodeGen/CalcSpillWeights.cpp for the register allocator in the LLVM 7 based compiler, he faced the Segmentation fault when executing a program.
As a result of an investigation, we found that the modification for the register allocator is not bad, and this fix is needed.
The above modification for the register allocator cannot be applied to the current main branch straightly, and cannot be published because that modification is in our product code.


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D111035