[PATCH] D135267: [DWARF] Share across CUs only when order free

[DianQK via Phabricator via llvm-commits]

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This patch fixed some invalidating cross-unit references. When a successor node exists for `DIType`, we cannot freely share `DIType` across CUs.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D135267

Files:
  llvm/include/llvm/IR/DebugInfoMetadata.h
  llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
  llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
  llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
  llvm/test/DebugInfo/cross-cu-scope-2.ll
  llvm/test/DebugInfo/cross-cu-scope.ll

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