[PATCH] D124098: Don't replace Undef with null value for Constants

[ykhatav via Phabricator via llvm-commits]

ykhatav created this revision.
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The following patch - (https://reviews.llvm.org/D117300)  introduced null's into the debug information and those nulls are expected to be undef values. The RAUW debug info handlers are for instructions, not constants and the debug information expects the value to be undef and not null. This patch tries to fix this behavior by not replacing undef with null value in Constants for debug info metadata.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D124098

Files:
  llvm/include/llvm/IR/Metadata.h
  llvm/lib/IR/Constants.cpp
  llvm/lib/IR/Metadata.cpp
  llvm/test/DebugInfo/X86/undef-type-md.ll

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