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Refactor constructImportedEntityDIE(DwarfUnit, DIImportedEntity) to return a DIE rather than inserting it into a specified context.

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First of many steps to improve lexical scope construction (to omit
trivial lexical scopes - those without any direct variables). To that
end it's easier not to create imported entities directly into the
lexical scope node, but to build them, then add them if necessary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216838 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie 2014-08-31 05:32:06 +00:00
parent b8ee7c2bf6
commit ba466e6909
2 changed files with 16 additions and 11 deletions
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22
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -688,22 +688,23 @@ void DwarfDebug::constructImportedEntityDIE(DwarfCompileUnit &TheCU,
DIImportedEntity Module(N);
assert(Module.Verify());
if (DIE *D = TheCU.getOrCreateContextDIE(Module.getContext()))
constructImportedEntityDIE(TheCU, Module, *D);
D->addChild(constructImportedEntityDIE(TheCU, Module));
}
void DwarfDebug::constructImportedEntityDIE(DwarfCompileUnit &TheCU,
const MDNode *N, DIE &Context) {
DIImportedEntity Module(N);
assert(Module.Verify());
return constructImportedEntityDIE(TheCU, Module, Context);
Context.addChild(constructImportedEntityDIE(TheCU, Module));
}
void DwarfDebug::constructImportedEntityDIE(DwarfCompileUnit &TheCU,
const DIImportedEntity &Module,
DIE &Context) {
std::unique_ptr<DIE>
DwarfDebug::constructImportedEntityDIE(DwarfCompileUnit &TheCU,
const DIImportedEntity &Module) {
assert(Module.Verify() &&
"Use one of the MDNode * overloads to handle invalid metadata");
DIE &IMDie = TheCU.createAndAddDIE(Module.getTag(), Context, Module);
std::unique_ptr<DIE> IMDie = make_unique<DIE>((dwarf::Tag)Module.getTag());
TheCU.insertDIE(Module, IMDie.get());
DIE *EntityDie;
DIDescriptor Entity = resolve(Module.getEntity());
if (Entity.isNameSpace())
@ -714,13 +715,16 @@ void DwarfDebug::constructImportedEntityDIE(DwarfCompileUnit &TheCU,
EntityDie = TheCU.getOrCreateTypeDIE(DIType(Entity));
else
EntityDie = TheCU.getDIE(Entity);
TheCU.addSourceLine(IMDie, Module.getLineNumber(),
assert(EntityDie);
TheCU.addSourceLine(*IMDie, Module.getLineNumber(),
Module.getContext().getFilename(),
Module.getContext().getDirectory());
TheCU.addDIEEntry(IMDie, dwarf::DW_AT_import, *EntityDie);
TheCU.addDIEEntry(*IMDie, dwarf::DW_AT_import, *EntityDie);
StringRef Name = Module.getName();
if (!Name.empty())
TheCU.addString(IMDie, dwarf::DW_AT_name, Name);
TheCU.addString(*IMDie, dwarf::DW_AT_name, Name);
return IMDie;
}
// Emit all Dwarf sections that should come prior to the content. Create

5
lib/CodeGen/AsmPrinter/DwarfDebug.h
View File

@ -515,8 +515,9 @@ class DwarfDebug : public AsmPrinterHandler {
DIE &Context);
/// \brief Construct import_module DIE.
void constructImportedEntityDIE(DwarfCompileUnit &TheCU,
const DIImportedEntity &Module, DIE &Context);
std::unique_ptr<DIE>
constructImportedEntityDIE(DwarfCompileUnit &TheCU,
const DIImportedEntity &Module);
/// \brief Register a source line with debug info. Returns the unique
/// label that was emitted and which provides correspondence to the