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authordim <dim@FreeBSD.org>2015-12-30 13:13:10 +0000
committerdim <dim@FreeBSD.org>2015-12-30 13:13:10 +0000
commit9b5bf5c4f53d65d6a48722d7410ed7cb15f5ba3a (patch)
treeb466a4817f79516eb1df8eae92bccf62ecc84003 /contrib/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
parentf09a28d1de99fda4f5517fb12670fc36552f4927 (diff)
parente194cd6d03d91631334d9d5e55b506036f423cc8 (diff)
downloadFreeBSD-src-9b5bf5c4f53d65d6a48722d7410ed7cb15f5ba3a.zip
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Update llvm to trunk r256633.
Diffstat (limited to 'contrib/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp')
-rw-r--r--contrib/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp98
1 files changed, 62 insertions, 36 deletions
diff --git a/contrib/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp b/contrib/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
index 3555822..d75fea5 100644
--- a/contrib/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
+++ b/contrib/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
@@ -192,18 +192,19 @@ void DwarfUnit::addFlag(DIE &Die, dwarf::Attribute Attribute) {
DIEInteger(1));
}
-void DwarfUnit::addUInt(DIE &Die, dwarf::Attribute Attribute,
+void DwarfUnit::addUInt(DIEValueList &Die, dwarf::Attribute Attribute,
Optional<dwarf::Form> Form, uint64_t Integer) {
if (!Form)
Form = DIEInteger::BestForm(false, Integer);
Die.addValue(DIEValueAllocator, Attribute, *Form, DIEInteger(Integer));
}
-void DwarfUnit::addUInt(DIE &Block, dwarf::Form Form, uint64_t Integer) {
+void DwarfUnit::addUInt(DIEValueList &Block, dwarf::Form Form,
+ uint64_t Integer) {
addUInt(Block, (dwarf::Attribute)0, Form, Integer);
}
-void DwarfUnit::addSInt(DIE &Die, dwarf::Attribute Attribute,
+void DwarfUnit::addSInt(DIEValueList &Die, dwarf::Attribute Attribute,
Optional<dwarf::Form> Form, int64_t Integer) {
if (!Form)
Form = DIEInteger::BestForm(true, Integer);
@@ -222,9 +223,10 @@ void DwarfUnit::addString(DIE &Die, dwarf::Attribute Attribute,
DIEString(DU->getStringPool().getEntry(*Asm, String)));
}
-DIE::value_iterator DwarfUnit::addLabel(DIE &Die, dwarf::Attribute Attribute,
- dwarf::Form Form,
- const MCSymbol *Label) {
+DIEValueList::value_iterator DwarfUnit::addLabel(DIEValueList &Die,
+ dwarf::Attribute Attribute,
+ dwarf::Form Form,
+ const MCSymbol *Label) {
return Die.addValue(DIEValueAllocator, Attribute, Form, DIELabel(Label));
}
@@ -277,6 +279,13 @@ void DwarfUnit::addDIETypeSignature(DIE &Die, const DwarfTypeUnit &Type) {
dwarf::DW_FORM_ref_sig8, DIETypeSignature(Type));
}
+void DwarfUnit::addDIETypeSignature(DIE &Die, dwarf::Attribute Attribute,
+ StringRef Identifier) {
+ uint64_t Signature = DD->makeTypeSignature(Identifier);
+ Die.addValue(DIEValueAllocator, Attribute, dwarf::DW_FORM_ref_sig8,
+ DIEInteger(Signature));
+}
+
void DwarfUnit::addDIEEntry(DIE &Die, dwarf::Attribute Attribute,
DIEEntry Entry) {
const DIE *DieCU = Die.getUnitOrNull();
@@ -292,8 +301,6 @@ void DwarfUnit::addDIEEntry(DIE &Die, dwarf::Attribute Attribute,
}
DIE &DwarfUnit::createAndAddDIE(unsigned Tag, DIE &Parent, const DINode *N) {
- assert(Tag != dwarf::DW_TAG_auto_variable &&
- Tag != dwarf::DW_TAG_arg_variable);
DIE &Die = Parent.addChild(DIE::get(DIEValueAllocator, (dwarf::Tag)Tag));
if (N)
insertDIE(N, &Die);
@@ -445,7 +452,7 @@ void DwarfUnit::addBlockByrefAddress(const DbgVariable &DV, DIE &Die,
// Find the __forwarding field and the variable field in the __Block_byref
// struct.
- DINodeArray Fields = cast<DICompositeTypeBase>(TmpTy)->getElements();
+ DINodeArray Fields = cast<DICompositeType>(TmpTy)->getElements();
const DIDerivedType *varField = nullptr;
const DIDerivedType *forwardingField = nullptr;
@@ -506,34 +513,35 @@ void DwarfUnit::addBlockByrefAddress(const DbgVariable &DV, DIE &Die,
/// Return true if type encoding is unsigned.
static bool isUnsignedDIType(DwarfDebug *DD, const DIType *Ty) {
- if (auto *DTy = dyn_cast<DIDerivedTypeBase>(Ty)) {
+ if (auto *CTy = dyn_cast<DICompositeType>(Ty)) {
+ // FIXME: Enums without a fixed underlying type have unknown signedness
+ // here, leading to incorrectly emitted constants.
+ if (CTy->getTag() == dwarf::DW_TAG_enumeration_type)
+ return false;
+
+ // (Pieces of) aggregate types that get hacked apart by SROA may be
+ // represented by a constant. Encode them as unsigned bytes.
+ return true;
+ }
+
+ if (auto *DTy = dyn_cast<DIDerivedType>(Ty)) {
dwarf::Tag T = (dwarf::Tag)Ty->getTag();
// Encode pointer constants as unsigned bytes. This is used at least for
// null pointer constant emission.
- // (Pieces of) aggregate types that get hacked apart by SROA may also be
- // represented by a constant. Encode them as unsigned bytes.
// FIXME: reference and rvalue_reference /probably/ shouldn't be allowed
// here, but accept them for now due to a bug in SROA producing bogus
// dbg.values.
- if (T == dwarf::DW_TAG_array_type ||
- T == dwarf::DW_TAG_class_type ||
- T == dwarf::DW_TAG_pointer_type ||
+ if (T == dwarf::DW_TAG_pointer_type ||
T == dwarf::DW_TAG_ptr_to_member_type ||
T == dwarf::DW_TAG_reference_type ||
- T == dwarf::DW_TAG_rvalue_reference_type ||
- T == dwarf::DW_TAG_structure_type ||
- T == dwarf::DW_TAG_union_type)
+ T == dwarf::DW_TAG_rvalue_reference_type)
return true;
assert(T == dwarf::DW_TAG_typedef || T == dwarf::DW_TAG_const_type ||
T == dwarf::DW_TAG_volatile_type ||
- T == dwarf::DW_TAG_restrict_type ||
- T == dwarf::DW_TAG_enumeration_type);
- if (DITypeRef Deriv = DTy->getBaseType())
- return isUnsignedDIType(DD, DD->resolve(Deriv));
- // FIXME: Enums without a fixed underlying type have unknown signedness
- // here, leading to incorrectly emitted constants.
- assert(DTy->getTag() == dwarf::DW_TAG_enumeration_type);
- return false;
+ T == dwarf::DW_TAG_restrict_type);
+ DITypeRef Deriv = DTy->getBaseType();
+ assert(Deriv && "Expected valid base type");
+ return isUnsignedDIType(DD, DD->resolve(Deriv));
}
auto *BTy = cast<DIBasicType>(Ty);
@@ -659,7 +667,7 @@ void DwarfUnit::addConstantValue(DIE &Die, const APInt &Val, bool Unsigned) {
}
void DwarfUnit::addLinkageName(DIE &Die, StringRef LinkageName) {
- if (!LinkageName.empty())
+ if (!LinkageName.empty() && DD->useLinkageNames())
addString(Die,
DD->getDwarfVersion() >= 4 ? dwarf::DW_AT_linkage_name
: dwarf::DW_AT_MIPS_linkage_name,
@@ -685,6 +693,8 @@ DIE *DwarfUnit::getOrCreateContextDIE(const DIScope *Context) {
return getOrCreateNameSpace(NS);
if (auto *SP = dyn_cast<DISubprogram>(Context))
return getOrCreateSubprogramDIE(SP);
+ if (auto *M = dyn_cast<DIModule>(Context))
+ return getOrCreateModule(M);
return getDIE(Context);
}
@@ -700,7 +710,8 @@ DIE *DwarfUnit::createTypeDIE(const DICompositeType *Ty) {
constructTypeDIE(TyDIE, cast<DICompositeType>(Ty));
- updateAcceleratorTables(Context, Ty, TyDIE);
+ if (!Ty->isExternalTypeRef())
+ updateAcceleratorTables(Context, Ty, TyDIE);
return &TyDIE;
}
@@ -753,7 +764,7 @@ void DwarfUnit::updateAcceleratorTables(const DIScope *Context,
const DIType *Ty, const DIE &TyDIE) {
if (!Ty->getName().empty() && !Ty->isForwardDecl()) {
bool IsImplementation = 0;
- if (auto *CT = dyn_cast<DICompositeTypeBase>(Ty)) {
+ if (auto *CT = dyn_cast<DICompositeType>(Ty)) {
// A runtime language of 0 actually means C/C++ and that any
// non-negative value is some version of Objective-C/C++.
IsImplementation = CT->getRuntimeLang() == 0 || CT->isObjcClassComplete();
@@ -795,8 +806,7 @@ std::string DwarfUnit::getParentContextString(const DIScope *Context) const {
// Reverse iterate over our list to go from the outermost construct to the
// innermost.
- for (auto I = Parents.rbegin(), E = Parents.rend(); I != E; ++I) {
- const DIScope *Ctx = *I;
+ for (const DIScope *Ctx : make_range(Parents.rbegin(), Parents.rend())) {
StringRef Name = Ctx->getName();
if (Name.empty() && isa<DINamespace>(Ctx))
Name = "(anonymous namespace)";
@@ -843,7 +853,9 @@ void DwarfUnit::constructTypeDIE(DIE &Buffer, const DIDerivedType *DTy) {
// Add size if non-zero (derived types might be zero-sized.)
if (Size && Tag != dwarf::DW_TAG_pointer_type
- && Tag != dwarf::DW_TAG_ptr_to_member_type)
+ && Tag != dwarf::DW_TAG_ptr_to_member_type
+ && Tag != dwarf::DW_TAG_reference_type
+ && Tag != dwarf::DW_TAG_rvalue_reference_type)
addUInt(Buffer, dwarf::DW_AT_byte_size, None, Size);
if (Tag == dwarf::DW_TAG_ptr_to_member_type)
@@ -899,6 +911,13 @@ void DwarfUnit::constructTypeDIE(DIE &Buffer, const DISubroutineType *CTy) {
}
void DwarfUnit::constructTypeDIE(DIE &Buffer, const DICompositeType *CTy) {
+ if (CTy->isExternalTypeRef()) {
+ StringRef Identifier = CTy->getIdentifier();
+ assert(!Identifier.empty() && "external type ref without identifier");
+ addFlag(Buffer, dwarf::DW_AT_declaration);
+ return addDIETypeSignature(Buffer, dwarf::DW_AT_signature, Identifier);
+ }
+
// Add name if not anonymous or intermediate type.
StringRef Name = CTy->getName();
@@ -1134,6 +1153,14 @@ bool DwarfUnit::applySubprogramDefinitionAttributes(const DISubprogram *SP,
"definition DIE was created in "
"getOrCreateSubprogramDIE");
DeclLinkageName = SPDecl->getLinkageName();
+ unsigned DeclID =
+ getOrCreateSourceID(SPDecl->getFilename(), SPDecl->getDirectory());
+ unsigned DefID = getOrCreateSourceID(SP->getFilename(), SP->getDirectory());
+ if (DeclID != DefID)
+ addUInt(SPDie, dwarf::DW_AT_decl_file, None, DefID);
+
+ if (SP->getLine() != SPDecl->getLine())
+ addUInt(SPDie, dwarf::DW_AT_decl_line, None, SP->getLine());
}
// Add function template parameters.
@@ -1180,11 +1207,10 @@ void DwarfUnit::applySubprogramAttributes(const DISubprogram *SP, DIE &SPDie,
Language == dwarf::DW_LANG_ObjC))
addFlag(SPDie, dwarf::DW_AT_prototyped);
- const DISubroutineType *SPTy = SP->getType();
- assert(SPTy->getTag() == dwarf::DW_TAG_subroutine_type &&
- "the type of a subprogram should be a subroutine");
+ DITypeRefArray Args;
+ if (const DISubroutineType *SPTy = SP->getType())
+ Args = SPTy->getTypeArray();
- auto Args = SPTy->getTypeArray();
// Add a return type. If this is a type like a C/C++ void type we don't add a
// return type.
if (Args.size())
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