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from a5bd54307b1 Place undefined globals in .bss instead of .data new 04aa65061f7 Add DWARF for discriminated unions

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Summary of changes: include/llvm/IR/DIBuilder.h | 42 ++++++++++++ include/llvm/IR/DebugInfoMetadata.h | 31 ++++++--- lib/AsmParser/LLParser.cpp | 8 ++- lib/BinaryFormat/Dwarf.cpp | 12 ---- lib/Bitcode/Reader/MetadataLoader.cpp | 7 +- lib/Bitcode/Writer/BitcodeWriter.cpp | 1 + lib/CodeGen/AsmPrinter/DwarfUnit.cpp | 36 +++++++++- lib/CodeGen/AsmPrinter/DwarfUnit.h | 2 +- lib/IR/AsmWriter.cpp | 1 + lib/IR/DIBuilder.cpp | 25 +++++++ lib/IR/DebugInfoMetadata.cpp | 20 +++--- lib/IR/LLVMContextImpl.h | 12 ++-- lib/IR/Verifier.cpp | 8 ++- test/Assembler/debug-info.ll | 11 ++- test/DebugInfo/Generic/discriminated-union.ll | 80 ++++++++++++++++++++++ .../Generic/univariant-discriminated-union.ll | 65 ++++++++++++++++++ test/Verifier/variant-part.ll | 8 +++ unittests/IR/DebugTypeODRUniquingTest.cpp | 22 +++--- unittests/IR/MetadataTest.cpp | 45 ++++++++++++ 19 files changed, 380 insertions(+), 56 deletions(-) create mode 100644 test/DebugInfo/Generic/discriminated-union.ll create mode 100644 test/DebugInfo/Generic/univariant-discriminated-union.ll create mode 100644 test/Verifier/variant-part.ll