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Set DW_AT_artificial only if argument is marked as artificial.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95461 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2010-02-06 01:02:37 +00:00
parent e6373eb826
commit b4645643de
3 changed files with 44 additions and 6 deletions
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10
include/llvm/Analysis/DebugInfo.h
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@ -193,7 +193,9 @@ namespace llvm {
FlagFwdDecl = 1 << 2, FlagFwdDecl = 1 << 2,
FlagAppleBlock = 1 << 3, FlagAppleBlock = 1 << 3,
FlagBlockByrefStruct = 1 << 4, FlagBlockByrefStruct = 1 << 4,
FlagVirtual = 1 << 5 FlagVirtual = 1 << 5,
FlagArtificial = 1 << 6 // To identify artificial arguments in
// a subroutine type. e.g. "this" in c++.
}; };
protected: protected:
@ -241,6 +243,9 @@ namespace llvm {
bool isVirtual() const { bool isVirtual() const {
return (getFlags() & FlagVirtual) != 0; return (getFlags() & FlagVirtual) != 0;
} }
bool isArtificial() const {
return (getFlags() & FlagArtificial) != 0;
}
/// dump - print type. /// dump - print type.
void dump() const; void dump() const;
@ -574,6 +579,9 @@ namespace llvm {
unsigned RunTimeLang = 0, unsigned RunTimeLang = 0,
MDNode *ContainingType = 0); MDNode *ContainingType = 0);
/// CreateArtificialType - Create a new DIType with "artificial" flag set.
DIType CreateArtificialType(DIType Ty);
/// CreateCompositeType - Create a composite type like array, struct, etc. /// CreateCompositeType - Create a composite type like array, struct, etc.
DICompositeType CreateCompositeTypeEx(unsigned Tag, DIDescriptor Context, DICompositeType CreateCompositeTypeEx(unsigned Tag, DIDescriptor Context,
StringRef Name, StringRef Name,

23
lib/Analysis/DebugInfo.cpp
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@ -725,6 +725,29 @@ DIBasicType DIFactory::CreateBasicTypeEx(DIDescriptor Context,
return DIBasicType(MDNode::get(VMContext, &Elts[0], 10)); return DIBasicType(MDNode::get(VMContext, &Elts[0], 10));
} }
/// CreateArtificialType - Create a new DIType with "artificial" flag set.
DIType DIFactory::CreateArtificialType(DIType Ty) {
if (Ty.isArtificial())
return Ty;
SmallVector<Value *, 9> Elts;
MDNode *N = Ty.getNode();
assert (N && "Unexpected input DIType!");
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
if (Value *V = N->getOperand(i))
Elts.push_back(V);
else
Elts.push_back(Constant::getNullValue(Type::getInt32Ty(VMContext)));
}
unsigned CurFlags = Ty.getFlags();
CurFlags = CurFlags | DIType::FlagArtificial;
// Flags are stored at this slot.
Elts[8] = ConstantInt::get(Type::getInt32Ty(VMContext), CurFlags);
return DIType(MDNode::get(VMContext, Elts.data(), Elts.size()));
}
/// CreateDerivedType - Create a derived type like const qualified type, /// CreateDerivedType - Create a derived type like const qualified type,
/// pointer, typedef, etc. /// pointer, typedef, etc.

17
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -1214,8 +1214,10 @@ DIE *DwarfDebug::createSubprogramDIE(const DISubprogram &SP, bool MakeDecl) {
if (SPTag == dwarf::DW_TAG_subroutine_type) if (SPTag == dwarf::DW_TAG_subroutine_type)
for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) { for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) {
DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter); DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
addType(Arg, DIType(Args.getElement(i).getNode())); DIType ATy = DIType(DIType(Args.getElement(i).getNode()));
addUInt(Arg, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1); // ?? addType(Arg, ATy);
if (ATy.isArtificial())
addUInt(Arg, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
SPDie->addChild(Arg); SPDie->addChild(Arg);
} }
} }
@ -1342,8 +1344,10 @@ DIE *DwarfDebug::updateSubprogramScopeDIE(MDNode *SPNode) {
if (SPTag == dwarf::DW_TAG_subroutine_type) if (SPTag == dwarf::DW_TAG_subroutine_type)
for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) { for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) {
DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter); DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
addType(Arg, DIType(Args.getElement(i).getNode())); DIType ATy = DIType(DIType(Args.getElement(i).getNode()));
addUInt(Arg, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1); // ?? addType(Arg, ATy);
if (ATy.isArtificial())
addUInt(Arg, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
SPDie->addChild(Arg); SPDie->addChild(Arg);
} }
DIE *SPDeclDie = SPDie; DIE *SPDeclDie = SPDie;
@ -1352,7 +1356,7 @@ DIE *DwarfDebug::updateSubprogramScopeDIE(MDNode *SPNode) {
SPDeclDie); SPDeclDie);
ModuleCU->addDie(SPDie); ModuleCU->addDie(SPDie);
} }
addLabel(SPDie, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr, addLabel(SPDie, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
DWLabel("func_begin", SubprogramCount)); DWLabel("func_begin", SubprogramCount));
addLabel(SPDie, dwarf::DW_AT_high_pc, dwarf::DW_FORM_addr, addLabel(SPDie, dwarf::DW_AT_high_pc, dwarf::DW_FORM_addr,
@ -1515,6 +1519,9 @@ DIE *DwarfDebug::constructVariableDIE(DbgVariable *DV, DbgScope *Scope) {
else else
addAddress(VariableDie, dwarf::DW_AT_location, Location); addAddress(VariableDie, dwarf::DW_AT_location, Location);
} }
if (Tag == dwarf::DW_TAG_formal_parameter && VD.getType().isArtificial())
addUInt(VariableDie, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
DV->setDIE(VariableDie); DV->setDIE(VariableDie);
return VariableDie; return VariableDie;