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Use named MDNode, llvm.dbg.sp, to collect subprogram info. This will be used to emit local variable's debug info of deleted functions.

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llvm-svn: 106989
This commit is contained in:
Devang Patel 2010-06-28 05:53:08 +00:00
parent a0473aa51c
commit fdca552823
1 changed files with 23 additions and 11 deletions
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34
lib/Analysis/DebugInfo.cpp
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@ -971,7 +971,12 @@ DISubprogram DIFactory::CreateSubprogram(DIDescriptor Context,
ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
Fn
};
return DISubprogram(MDNode::get(VMContext, &Elts[0], 17));
MDNode *Node = MDNode::get(VMContext, &Elts[0], 17);
// Create a named metadata so that we do not lose this mdnode.
NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.sp");
NMD->addOperand(Node);
return DISubprogram(Node);
}
/// CreateSubprogramDefinition - Create new subprogram descriptor for the
@ -1000,7 +1005,12 @@ DISubprogram DIFactory::CreateSubprogramDefinition(DISubprogram &SPDeclaration)
DeclNode->getOperand(15), // isOptimized
SPDeclaration.getFunction()
};
return DISubprogram(MDNode::get(VMContext, &Elts[0], 16));
MDNode *Node =MDNode::get(VMContext, &Elts[0], 16);
// Create a named metadata so that we do not lose this mdnode.
NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.sp");
NMD->addOperand(Node);
return DISubprogram(Node);
}
/// CreateGlobalVariable - Create a new descriptor for the specified global.
@ -1230,17 +1240,19 @@ void DebugInfoFinder::processModule(Module &M) {
processLocation(DILocation(IA));
}
NamedMDNode *NMD = M.getNamedMetadata("llvm.dbg.gv");
if (!NMD)
return;
for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
DIGlobalVariable DIG(cast<MDNode>(NMD->getOperand(i)));
if (addGlobalVariable(DIG)) {
addCompileUnit(DIG.getCompileUnit());
processType(DIG.getType());
if (NamedMDNode *NMD = M.getNamedMetadata("llvm.dbg.gv")) {
for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
DIGlobalVariable DIG(cast<MDNode>(NMD->getOperand(i)));
if (addGlobalVariable(DIG)) {
addCompileUnit(DIG.getCompileUnit());
processType(DIG.getType());
}
}
}
if (NamedMDNode *NMD = M.getNamedMetadata("llvm.dbg.sp"))
for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i)
processSubprogram(DISubprogram(NMD->getOperand(i)));
}
/// processLocation - Process DILocation.