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Add the support code to enable the dwarf accelerator tables. Upcoming patches

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to fix the types section (all types, not just global types), and testcases.

The code to do the final emission is disabled by default.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143923 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
2011-11-07 09:24:32 +00:00
parent bcbd3a4637
commit 09ac3d8413
7 changed files with 268 additions and 8 deletions
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13
lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
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@ -904,8 +904,11 @@ DIE *CompileUnit::getOrCreateNameSpace(DINameSpace NS) {
return NDie;
NDie = new DIE(dwarf::DW_TAG_namespace);
insertDIE(NS, NDie);
if (!NS.getName().empty())
if (!NS.getName().empty()) {
addString(NDie, dwarf::DW_AT_name, NS.getName());
addAccelNamespace(NS.getName(), NDie);
} else
addAccelNamespace("(anonymous namespace)", NDie);
addSourceLine(NDie, NS);
addToContextOwner(NDie, NS.getContext());
return NDie;
@ -1078,7 +1081,9 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
DIDescriptor GVContext = GV.getContext();
addToContextOwner(VariableDIE, GVContext);
// Add location.
bool addToAccelTable = false;
if (isGlobalVariable) {
addToAccelTable = true;
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
addLabel(Block, 0, dwarf::DW_FORM_udata,
@ -1097,11 +1102,12 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
addDie(VariableSpecDIE);
} else {
addBlock(VariableDIE, dwarf::DW_AT_location, 0, Block);
}
}
} else if (const ConstantInt *CI =
dyn_cast_or_null<ConstantInt>(GV.getConstant()))
addConstantValue(VariableDIE, CI, GTy.isUnsignedDIType());
else if (const ConstantExpr *CE = getMergedGlobalExpr(N->getOperand(11))) {
addToAccelTable = true;
// GV is a merged global.
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
Value *Ptr = CE->getOperand(0);
@ -1116,6 +1122,9 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
addBlock(VariableDIE, dwarf::DW_AT_location, 0, Block);
}
if (addToAccelTable)
addAccelName(GV.getName(), VariableDIE);
return;
}