[PATCH] D128950: Add 'sanitize_memtag' Global IR attribute

[Mitch Phillips via Phabricator via llvm-commits]

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This is for the upcoming MTE globals feature. We need a positive include
mask that can be used by the MTE Globals IR pass because it needs to
interact with other parts of LLVM, including:

1. Suppressing certain global optimisations (like merging),
2. Emitting extra directives by the ASM writer, and
3. Putting extra information in the symbol table entries.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D128950

Files:
  llvm/docs/LangRef.rst
  llvm/include/llvm/IR/GlobalValue.h
  llvm/lib/AsmParser/LLParser.cpp
  llvm/lib/Bitcode/Reader/BitcodeReader.cpp
  llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
  llvm/lib/IR/AsmWriter.cpp
  llvm/test/Assembler/globalvariable-attributes.ll
  llvm/test/Bitcode/compatibility.ll

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