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Currently each Function points to a DISubprogram and DISubprogram has a scope field. For member functions the scope is a DICompositeType. DIScopes point to the DICompileUnit to facilitate type uniquing. Distinct DISubprograms (with isDefinition: true) are not part of the type hierarchy and cannot be uniqued. This change removes the subprograms list from DICompileUnit and instead adds a pointer to the owning compile unit to distinct DISubprograms. This would make it easy for ThinLTO to strip unneeded DISubprograms and their transitively referenced debug info. Motivation ---------- Materializing DISubprograms is currently the most expensive operation when doing a ThinLTO build of clang. We want the DISubprogram to be stored in a separate Bitcode block (or the same block as the function body) so we can avoid having to expensively deserialize all DISubprograms together with the global metadata. If a function has been inlined into another subprogram we need to store a reference the block containing the inlined subprogram. Attached to https://llvm.org/bugs/show_bug.cgi?id=27284 is a python script that updates LLVM IR testcases to the new format. http://reviews.llvm.org/D19034 <rdar://problem/25256815> llvm-svn: 266446 |
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AddressPool.cpp | ||
AddressPool.h | ||
ARMException.cpp | ||
AsmPrinter.cpp | ||
AsmPrinterDwarf.cpp | ||
AsmPrinterHandler.h | ||
AsmPrinterInlineAsm.cpp | ||
ByteStreamer.h | ||
CMakeLists.txt | ||
CodeViewDebug.cpp | ||
CodeViewDebug.h | ||
DbgValueHistoryCalculator.cpp | ||
DbgValueHistoryCalculator.h | ||
DebugHandlerBase.cpp | ||
DebugHandlerBase.h | ||
DebugLocEntry.h | ||
DebugLocStream.cpp | ||
DebugLocStream.h | ||
DIE.cpp | ||
DIEHash.cpp | ||
DIEHash.h | ||
DwarfAccelTable.cpp | ||
DwarfAccelTable.h | ||
DwarfCFIException.cpp | ||
DwarfCompileUnit.cpp | ||
DwarfCompileUnit.h | ||
DwarfDebug.cpp | ||
DwarfDebug.h | ||
DwarfException.h | ||
DwarfExpression.cpp | ||
DwarfExpression.h | ||
DwarfFile.cpp | ||
DwarfFile.h | ||
DwarfStringPool.cpp | ||
DwarfStringPool.h | ||
DwarfUnit.cpp | ||
DwarfUnit.h | ||
EHStreamer.cpp | ||
EHStreamer.h | ||
ErlangGCPrinter.cpp | ||
LLVMBuild.txt | ||
OcamlGCPrinter.cpp | ||
WinException.cpp | ||
WinException.h |