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DebugInfo: Move type units into the debug_types section with appropriate comdat grouping and type unit headers

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This commit does not complete the type units feature - there are issues
around fission support (skeletal type units, pubtypes/pubnames) and
hashing of some types including those containing references to types in
other type units.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197073 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie
2013-12-11 21:36:27 +00:00
parent bd71b0a161
commit 3d2670cc54
8 changed files with 93 additions and 29 deletions
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12
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -3056,19 +3056,17 @@ void DwarfDebug::addDwarfTypeUnitType(uint16_t Language, DIE *RefDie,
// referenced type, or possibly walk the precomputed hashes of related types
// at the end.
uint64_t Signature = DIEHash().computeTypeSignature(*Die);
NewTU->setTypeSignature(Signature);
NewTU->setType(Die);
// Remove the References vector and add the type hash.
I->second.first = Signature;
I->second.second = NULL;
NewTU->initSection(
useSplitDwarf() ? Asm->getObjFileLowering().getDwarfInfoDWOSection()
: Asm->getObjFileLowering().getDwarfInfoSection(),
// FIXME: This is subtle (using the info section even when
// this CU is in the dwo section) and necessary for the
// current arange code - ideally it should iterate
// skeleton units, not full units, if it's going to reference skeletons
useSplitDwarf() ? NULL : DwarfInfoSectionSym);
useSplitDwarf()
? Asm->getObjFileLowering().getDwarfTypesDWOSection(Signature)
: Asm->getObjFileLowering().getDwarfTypesSection(Signature));
}
// Populate all the signatures.