//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachineModuleInfo.h"
-
-#include "llvm/Constants.h"
+#include "llvm/ADT/PointerUnion.h"
+#include "llvm/Analysis/LibCallSemantics.h"
#include "llvm/Analysis/ValueTracking.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineLocation.h"
+#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/Passes.h"
-#include "llvm/Target/TargetInstrInfo.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetOptions.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/GlobalVariable.h"
-#include "llvm/Intrinsics.h"
-#include "llvm/Instructions.h"
-#include "llvm/Module.h"
+#include "llvm/CodeGen/WinEHFuncInfo.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/GlobalVariable.h"
+#include "llvm/IR/Module.h"
+#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/Dwarf.h"
-#include "llvm/Support/Streams.h"
+#include "llvm/Support/ErrorHandling.h"
using namespace llvm;
using namespace llvm::dwarf;
-// Handle the Pass registration stuff necessary to use TargetData's.
-static RegisterPass<MachineModuleInfo>
-X("machinemoduleinfo", "Module Information");
+// Handle the Pass registration stuff necessary to use DataLayout's.
+INITIALIZE_PASS(MachineModuleInfo, "machinemoduleinfo",
+ "Machine Module Information", false, false)
char MachineModuleInfo::ID = 0;
-//===----------------------------------------------------------------------===//
-
-/// getGlobalVariablesUsing - Return all of the GlobalVariables which have the
-/// specified value in their initializer somewhere.
-static void
-getGlobalVariablesUsing(Value *V, std::vector<GlobalVariable*> &Result) {
- // Scan though value users.
- for (Value::use_iterator I = V->use_begin(), E = V->use_end(); I != E; ++I) {
- if (GlobalVariable *GV = dyn_cast<GlobalVariable>(*I)) {
- // If the user is a GlobalVariable then add to result.
- Result.push_back(GV);
- } else if (Constant *C = dyn_cast<Constant>(*I)) {
- // If the user is a constant variable then scan its users
- getGlobalVariablesUsing(C, Result);
- }
- }
-}
-
-/// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
-/// named GlobalVariable.
-static void
-getGlobalVariablesUsing(Module &M, const std::string &RootName,
- std::vector<GlobalVariable*> &Result) {
- std::vector<const Type*> FieldTypes;
- FieldTypes.push_back(Type::Int32Ty);
- FieldTypes.push_back(Type::Int32Ty);
-
- // Get the GlobalVariable root.
- GlobalVariable *UseRoot = M.getGlobalVariable(RootName,
- StructType::get(FieldTypes));
-
- // If present and linkonce then scan for users.
- if (UseRoot && UseRoot->hasLinkOnceLinkage())
- getGlobalVariablesUsing(UseRoot, Result);
-}
-
-/// isStringValue - Return true if the given value can be coerced to a string.
-///
-static bool isStringValue(Value *V) {
- if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
- if (GV->hasInitializer() && isa<ConstantArray>(GV->getInitializer())) {
- ConstantArray *Init = cast<ConstantArray>(GV->getInitializer());
- return Init->isString();
- }
- } else if (Constant *C = dyn_cast<Constant>(V)) {
- if (GlobalValue *GV = dyn_cast<GlobalValue>(C))
- return isStringValue(GV);
- else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
- if (CE->getOpcode() == Instruction::GetElementPtr) {
- if (CE->getNumOperands() == 3 &&
- cast<Constant>(CE->getOperand(1))->isNullValue() &&
- isa<ConstantInt>(CE->getOperand(2))) {
- return isStringValue(CE->getOperand(0));
- }
- }
- }
- }
- return false;
-}
-
-/// getGlobalVariable - Return either a direct or cast Global value.
-///
-static GlobalVariable *getGlobalVariable(Value *V) {
- if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
- return GV;
- } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
- if (CE->getOpcode() == Instruction::BitCast) {
- return dyn_cast<GlobalVariable>(CE->getOperand(0));
- } else if (CE->getOpcode() == Instruction::GetElementPtr) {
- for (unsigned int i=1; i<CE->getNumOperands(); i++) {
- if (!CE->getOperand(i)->isNullValue())
- return NULL;
- }
- return dyn_cast<GlobalVariable>(CE->getOperand(0));
- }
- }
- return NULL;
-}
-
-/// isGlobalVariable - Return true if the given value can be coerced to a
-/// GlobalVariable.
-static bool isGlobalVariable(Value *V) {
- if (isa<GlobalVariable>(V) || isa<ConstantPointerNull>(V)) {
- return true;
- } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
- if (CE->getOpcode() == Instruction::BitCast) {
- return isa<GlobalVariable>(CE->getOperand(0));
- } else if (CE->getOpcode() == Instruction::GetElementPtr) {
- for (unsigned int i=1; i<CE->getNumOperands(); i++) {
- if (!CE->getOperand(i)->isNullValue())
- return false;
- }
- return isa<GlobalVariable>(CE->getOperand(0));
- }
- }
- return false;
-}
+// Out of line virtual method.
+MachineModuleInfoImpl::~MachineModuleInfoImpl() {}
-/// getUIntOperand - Return ith operand if it is an unsigned integer.
-///
-static ConstantInt *getUIntOperand(GlobalVariable *GV, unsigned i) {
- // Make sure the GlobalVariable has an initializer.
- if (!GV->hasInitializer()) return NULL;
-
- // Get the initializer constant.
- ConstantStruct *CI = dyn_cast<ConstantStruct>(GV->getInitializer());
- if (!CI) return NULL;
-
- // Check if there is at least i + 1 operands.
- unsigned N = CI->getNumOperands();
- if (i >= N) return NULL;
-
- // Check constant.
- return dyn_cast<ConstantInt>(CI->getOperand(i));
-}
-
-//===----------------------------------------------------------------------===//
+namespace llvm {
+class MMIAddrLabelMapCallbackPtr : CallbackVH {
+ MMIAddrLabelMap *Map;
+public:
+ MMIAddrLabelMapCallbackPtr() : Map(nullptr) {}
+ MMIAddrLabelMapCallbackPtr(Value *V) : CallbackVH(V), Map(nullptr) {}
-static unsigned CountFields(DebugInfoDesc *DD) {
- unsigned Count = 0;
-
- switch (DD->getTag()) {
- case DW_TAG_anchor: // AnchorDesc
- // Tag
- // AnchorTag
- Count = 2;
- break;
- case DW_TAG_compile_unit: // CompileUnitDesc
- // [DW_TAG_anchor]
- // if (Version == 0) DebugVersion
- // Language
- // FileName
- // Directory
- // Producer
- Count = 6;
-
- // Handle cases out of sync with compiler.
- if (DD->getVersion() == 0)
- ++Count;
-
- break;
- case DW_TAG_variable: // GlobalVariableDesc
- // [DW_TAG_anchor]
- // Context
- // Name
- // FullName
- // LinkageName
- // File
- // Line
- // TyDesc
- // IsStatic
- // IsDefinition
- // Global
- Count = 12;
- break;
- case DW_TAG_subprogram: // SubprogramDesc
- // [DW_TAG_anchor]
- // Context
- // Name
- // FullName
- // LinkageName
- // File
- // Line
- // TyDesc
- // IsStatic
- // IsDefinition
- Count = 11;
- break;
- case DW_TAG_lexical_block: // BlockDesc
- // Tag
- // Context
- Count = 2;
- break;
- case DW_TAG_base_type: // BasicTypeDesc
- // Tag
- // Context
- // Name
- // File
- // Line
- // Size
- // Align
- // Offset
- // if (Version > LLVMDebugVersion4) Flags
- // Encoding
- Count = 9;
-
- if (DD->getVersion() > LLVMDebugVersion4)
- ++Count;
-
- break;
- case DW_TAG_typedef:
- case DW_TAG_pointer_type:
- case DW_TAG_reference_type:
- case DW_TAG_const_type:
- case DW_TAG_volatile_type:
- case DW_TAG_restrict_type:
- case DW_TAG_member:
- case DW_TAG_inheritance: // DerivedTypeDesc
- // Tag
- // Context
- // Name
- // File
- // Line
- // Size
- // Align
- // Offset
- // if (Version > LLVMDebugVersion4) Flags
- // FromType
- Count = 9;
-
- if (DD->getVersion() > LLVMDebugVersion4)
- ++Count;
-
- break;
- case DW_TAG_array_type:
- case DW_TAG_structure_type:
- case DW_TAG_union_type:
- case DW_TAG_enumeration_type:
- case DW_TAG_vector_type:
- case DW_TAG_subroutine_type: // CompositeTypeDesc
- // Tag
- // Context
- // Name
- // File
- // Line
- // Size
- // Align
- // Offset
- // if (Version > LLVMDebugVersion4) Flags
- // FromType
- // Elements
- Count = 10;
-
- if (DD->getVersion() > LLVMDebugVersion4)
- ++Count;
-
- break;
- case DW_TAG_subrange_type: // SubrangeDesc
- // Tag
- // Lo
- // Hi
- Count = 3;
- break;
- case DW_TAG_enumerator: // EnumeratorDesc
- // Tag
- // Name
- // Value
- Count = 3;
- break;
- case DW_TAG_return_variable:
- case DW_TAG_arg_variable:
- case DW_TAG_auto_variable: // VariableDesc
- // Tag
- // Context
- // Name
- // File
- // Line
- // TyDesc
- Count = 6;
- break;
- default:
- break;
+ void setPtr(BasicBlock *BB) {
+ ValueHandleBase::operator=(BB);
}
- return Count;
-}
+ void setMap(MMIAddrLabelMap *map) { Map = map; }
-//===----------------------------------------------------------------------===//
-
-/// ApplyToFields - Target the visitor to each field of the debug information
-/// descriptor.
-void DIVisitor::ApplyToFields(DebugInfoDesc *DD) {
- DD->ApplyToFields(this);
-}
-
-namespace {
-
-//===----------------------------------------------------------------------===//
-/// DIDeserializeVisitor - This DIVisitor deserializes all the fields in the
-/// supplied DebugInfoDesc.
-class DIDeserializeVisitor : public DIVisitor {
-private:
- DIDeserializer &DR; // Active deserializer.
- unsigned I; // Current operand index.
- ConstantStruct *CI; // GlobalVariable constant initializer.
-
-public:
- DIDeserializeVisitor(DIDeserializer &D, GlobalVariable *GV)
- : DIVisitor(), DR(D), I(0), CI(cast<ConstantStruct>(GV->getInitializer()))
- {}
-
- /// Apply - Set the value of each of the fields.
- ///
- virtual void Apply(int &Field) {
- Constant *C = CI->getOperand(I++);
- Field = cast<ConstantInt>(C)->getSExtValue();
- }
- virtual void Apply(unsigned &Field) {
- Constant *C = CI->getOperand(I++);
- Field = cast<ConstantInt>(C)->getZExtValue();
- }
- virtual void Apply(int64_t &Field) {
- Constant *C = CI->getOperand(I++);
- Field = cast<ConstantInt>(C)->getSExtValue();
- }
- virtual void Apply(uint64_t &Field) {
- Constant *C = CI->getOperand(I++);
- Field = cast<ConstantInt>(C)->getZExtValue();
- }
- virtual void Apply(bool &Field) {
- Constant *C = CI->getOperand(I++);
- Field = cast<ConstantInt>(C)->getZExtValue();
- }
- virtual void Apply(std::string &Field) {
- Constant *C = CI->getOperand(I++);
- // Fills in the string if it succeeds
- if (!GetConstantStringInfo(C, Field))
- Field.clear();
- }
- virtual void Apply(DebugInfoDesc *&Field) {
- Constant *C = CI->getOperand(I++);
- Field = DR.Deserialize(C);
- }
- virtual void Apply(GlobalVariable *&Field) {
- Constant *C = CI->getOperand(I++);
- Field = getGlobalVariable(C);
- }
- virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
- Field.resize(0);
- Constant *C = CI->getOperand(I++);
- GlobalVariable *GV = getGlobalVariable(C);
- if (GV->hasInitializer()) {
- if (ConstantArray *CA = dyn_cast<ConstantArray>(GV->getInitializer())) {
- for (unsigned i = 0, N = CA->getNumOperands(); i < N; ++i) {
- GlobalVariable *GVE = getGlobalVariable(CA->getOperand(i));
- DebugInfoDesc *DE = DR.Deserialize(GVE);
- Field.push_back(DE);
- }
- } else if (GV->getInitializer()->isNullValue()) {
- if (const ArrayType *T =
- dyn_cast<ArrayType>(GV->getType()->getElementType())) {
- Field.resize(T->getNumElements());
- }
- }
- }
- }
+ void deleted() override;
+ void allUsesReplacedWith(Value *V2) override;
};
-//===----------------------------------------------------------------------===//
-/// DISerializeVisitor - This DIVisitor serializes all the fields in
-/// the supplied DebugInfoDesc.
-class DISerializeVisitor : public DIVisitor {
-private:
- DISerializer &SR; // Active serializer.
- std::vector<Constant*> &Elements; // Element accumulator.
-
+class MMIAddrLabelMap {
+ MCContext &Context;
+ struct AddrLabelSymEntry {
+ /// Symbols - The symbols for the label. This is a pointer union that is
+ /// either one symbol (the common case) or a list of symbols.
+ PointerUnion<MCSymbol *, std::vector<MCSymbol*>*> Symbols;
+
+ Function *Fn; // The containing function of the BasicBlock.
+ unsigned Index; // The index in BBCallbacks for the BasicBlock.
+ };
+
+ DenseMap<AssertingVH<BasicBlock>, AddrLabelSymEntry> AddrLabelSymbols;
+
+ /// BBCallbacks - Callbacks for the BasicBlock's that we have entries for. We
+ /// use this so we get notified if a block is deleted or RAUWd.
+ std::vector<MMIAddrLabelMapCallbackPtr> BBCallbacks;
+
+ /// DeletedAddrLabelsNeedingEmission - This is a per-function list of symbols
+ /// whose corresponding BasicBlock got deleted. These symbols need to be
+ /// emitted at some point in the file, so AsmPrinter emits them after the
+ /// function body.
+ DenseMap<AssertingVH<Function>, std::vector<MCSymbol*> >
+ DeletedAddrLabelsNeedingEmission;
public:
- DISerializeVisitor(DISerializer &S, std::vector<Constant*> &E)
- : DIVisitor()
- , SR(S)
- , Elements(E)
- {}
-
- /// Apply - Set the value of each of the fields.
- ///
- virtual void Apply(int &Field) {
- Elements.push_back(ConstantInt::get(Type::Int32Ty, int32_t(Field)));
- }
- virtual void Apply(unsigned &Field) {
- Elements.push_back(ConstantInt::get(Type::Int32Ty, uint32_t(Field)));
- }
- virtual void Apply(int64_t &Field) {
- Elements.push_back(ConstantInt::get(Type::Int64Ty, int64_t(Field)));
- }
- virtual void Apply(uint64_t &Field) {
- Elements.push_back(ConstantInt::get(Type::Int64Ty, uint64_t(Field)));
- }
- virtual void Apply(bool &Field) {
- Elements.push_back(ConstantInt::get(Type::Int1Ty, Field));
- }
- virtual void Apply(std::string &Field) {
- Elements.push_back(SR.getString(Field));
- }
- virtual void Apply(DebugInfoDesc *&Field) {
- GlobalVariable *GV = NULL;
-
- // If non-NULL then convert to global.
- if (Field) GV = SR.Serialize(Field);
-
- // FIXME - At some point should use specific type.
- const PointerType *EmptyTy = SR.getEmptyStructPtrType();
-
- if (GV) {
- // Set to pointer to global.
- Elements.push_back(ConstantExpr::getBitCast(GV, EmptyTy));
- } else {
- // Use NULL.
- Elements.push_back(ConstantPointerNull::get(EmptyTy));
- }
- }
- virtual void Apply(GlobalVariable *&Field) {
- const PointerType *EmptyTy = SR.getEmptyStructPtrType();
- if (Field) {
- Elements.push_back(ConstantExpr::getBitCast(Field, EmptyTy));
- } else {
- Elements.push_back(ConstantPointerNull::get(EmptyTy));
- }
- }
- virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
- const PointerType *EmptyTy = SR.getEmptyStructPtrType();
- unsigned N = Field.size();
- ArrayType *AT = ArrayType::get(EmptyTy, N);
- std::vector<Constant *> ArrayElements;
-
- for (unsigned i = 0, N = Field.size(); i < N; ++i) {
- if (DebugInfoDesc *Element = Field[i]) {
- GlobalVariable *GVE = SR.Serialize(Element);
- Constant *CE = ConstantExpr::getBitCast(GVE, EmptyTy);
- ArrayElements.push_back(cast<Constant>(CE));
- } else {
- ArrayElements.push_back(ConstantPointerNull::get(EmptyTy));
- }
- }
-
- Constant *CA = ConstantArray::get(AT, ArrayElements);
- GlobalVariable *CAGV = new GlobalVariable(AT, true,
- GlobalValue::InternalLinkage,
- CA, "llvm.dbg.array",
- SR.getModule());
- CAGV->setSection("llvm.metadata");
- Constant *CAE = ConstantExpr::getBitCast(CAGV, EmptyTy);
- Elements.push_back(CAE);
- }
-};
-//===----------------------------------------------------------------------===//
-/// DIGetTypesVisitor - This DIVisitor gathers all the field types in
-/// the supplied DebugInfoDesc.
-class DIGetTypesVisitor : public DIVisitor {
-private:
- DISerializer &SR; // Active serializer.
- std::vector<const Type*> &Fields; // Type accumulator.
-
-public:
- DIGetTypesVisitor(DISerializer &S, std::vector<const Type*> &F)
- : DIVisitor()
- , SR(S)
- , Fields(F)
- {}
-
- /// Apply - Set the value of each of the fields.
- ///
- virtual void Apply(int &Field) {
- Fields.push_back(Type::Int32Ty);
- }
- virtual void Apply(unsigned &Field) {
- Fields.push_back(Type::Int32Ty);
- }
- virtual void Apply(int64_t &Field) {
- Fields.push_back(Type::Int64Ty);
- }
- virtual void Apply(uint64_t &Field) {
- Fields.push_back(Type::Int64Ty);
- }
- virtual void Apply(bool &Field) {
- Fields.push_back(Type::Int1Ty);
- }
- virtual void Apply(std::string &Field) {
- Fields.push_back(SR.getStrPtrType());
- }
- virtual void Apply(DebugInfoDesc *&Field) {
- // FIXME - At some point should use specific type.
- const PointerType *EmptyTy = SR.getEmptyStructPtrType();
- Fields.push_back(EmptyTy);
- }
- virtual void Apply(GlobalVariable *&Field) {
- const PointerType *EmptyTy = SR.getEmptyStructPtrType();
- Fields.push_back(EmptyTy);
- }
- virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
- const PointerType *EmptyTy = SR.getEmptyStructPtrType();
- Fields.push_back(EmptyTy);
- }
-};
+ MMIAddrLabelMap(MCContext &context) : Context(context) {}
+ ~MMIAddrLabelMap() {
+ assert(DeletedAddrLabelsNeedingEmission.empty() &&
+ "Some labels for deleted blocks never got emitted");
-//===----------------------------------------------------------------------===//
-/// DIVerifyVisitor - This DIVisitor verifies all the field types against
-/// a constant initializer.
-class DIVerifyVisitor : public DIVisitor {
-private:
- DIVerifier &VR; // Active verifier.
- bool IsValid; // Validity status.
- unsigned I; // Current operand index.
- ConstantStruct *CI; // GlobalVariable constant initializer.
-
-public:
- DIVerifyVisitor(DIVerifier &V, GlobalVariable *GV)
- : DIVisitor()
- , VR(V)
- , IsValid(true)
- , I(0)
- , CI(cast<ConstantStruct>(GV->getInitializer()))
- {
- }
-
- // Accessors.
- bool isValid() const { return IsValid; }
-
- /// Apply - Set the value of each of the fields.
- ///
- virtual void Apply(int &Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isa<ConstantInt>(C);
- }
- virtual void Apply(unsigned &Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isa<ConstantInt>(C);
- }
- virtual void Apply(int64_t &Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isa<ConstantInt>(C);
- }
- virtual void Apply(uint64_t &Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isa<ConstantInt>(C);
- }
- virtual void Apply(bool &Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isa<ConstantInt>(C) && C->getType() == Type::Int1Ty;
- }
- virtual void Apply(std::string &Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid &&
- (!C || isStringValue(C) || C->isNullValue());
- }
- virtual void Apply(DebugInfoDesc *&Field) {
- // FIXME - Prepare the correct descriptor.
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isGlobalVariable(C);
- }
- virtual void Apply(GlobalVariable *&Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isGlobalVariable(C);
- }
- virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isGlobalVariable(C);
- if (!IsValid) return;
-
- GlobalVariable *GV = getGlobalVariable(C);
- IsValid = IsValid && GV && GV->hasInitializer();
- if (!IsValid) return;
-
- ConstantArray *CA = dyn_cast<ConstantArray>(GV->getInitializer());
- IsValid = IsValid && CA;
- if (!IsValid) return;
-
- for (unsigned i = 0, N = CA->getNumOperands(); IsValid && i < N; ++i) {
- IsValid = IsValid && isGlobalVariable(CA->getOperand(i));
- if (!IsValid) return;
-
- GlobalVariable *GVE = getGlobalVariable(CA->getOperand(i));
- VR.Verify(GVE);
- }
+ // Deallocate any of the 'list of symbols' case.
+ for (DenseMap<AssertingVH<BasicBlock>, AddrLabelSymEntry>::iterator
+ I = AddrLabelSymbols.begin(), E = AddrLabelSymbols.end(); I != E; ++I)
+ if (I->second.Symbols.is<std::vector<MCSymbol*>*>())
+ delete I->second.Symbols.get<std::vector<MCSymbol*>*>();
}
-};
-}
+ MCSymbol *getAddrLabelSymbol(BasicBlock *BB);
+ std::vector<MCSymbol*> getAddrLabelSymbolToEmit(BasicBlock *BB);
-//===----------------------------------------------------------------------===//
+ void takeDeletedSymbolsForFunction(Function *F,
+ std::vector<MCSymbol*> &Result);
-/// TagFromGlobal - Returns the tag number from a debug info descriptor
-/// GlobalVariable. Return DIIValid if operand is not an unsigned int.
-unsigned DebugInfoDesc::TagFromGlobal(GlobalVariable *GV) {
- ConstantInt *C = getUIntOperand(GV, 0);
- return C ? ((unsigned)C->getZExtValue() & ~LLVMDebugVersionMask) :
- (unsigned)DW_TAG_invalid;
+ void UpdateForDeletedBlock(BasicBlock *BB);
+ void UpdateForRAUWBlock(BasicBlock *Old, BasicBlock *New);
+};
}
-/// VersionFromGlobal - Returns the version number from a debug info
-/// descriptor GlobalVariable. Return DIIValid if operand is not an unsigned
-/// int.
-unsigned DebugInfoDesc::VersionFromGlobal(GlobalVariable *GV) {
- ConstantInt *C = getUIntOperand(GV, 0);
- return C ? ((unsigned)C->getZExtValue() & LLVMDebugVersionMask) :
- (unsigned)DW_TAG_invalid;
-}
+MCSymbol *MMIAddrLabelMap::getAddrLabelSymbol(BasicBlock *BB) {
+ assert(BB->hasAddressTaken() &&
+ "Shouldn't get label for block without address taken");
+ AddrLabelSymEntry &Entry = AddrLabelSymbols[BB];
-/// DescFactory - Create an instance of debug info descriptor based on Tag.
-/// Return NULL if not a recognized Tag.
-DebugInfoDesc *DebugInfoDesc::DescFactory(unsigned Tag) {
- switch (Tag) {
- case DW_TAG_anchor: return new AnchorDesc();
- case DW_TAG_compile_unit: return new CompileUnitDesc();
- case DW_TAG_variable: return new GlobalVariableDesc();
- case DW_TAG_subprogram: return new SubprogramDesc();
- case DW_TAG_lexical_block: return new BlockDesc();
- case DW_TAG_base_type: return new BasicTypeDesc();
- case DW_TAG_typedef:
- case DW_TAG_pointer_type:
- case DW_TAG_reference_type:
- case DW_TAG_const_type:
- case DW_TAG_volatile_type:
- case DW_TAG_restrict_type:
- case DW_TAG_member:
- case DW_TAG_inheritance: return new DerivedTypeDesc(Tag);
- case DW_TAG_array_type:
- case DW_TAG_structure_type:
- case DW_TAG_union_type:
- case DW_TAG_enumeration_type:
- case DW_TAG_vector_type:
- case DW_TAG_subroutine_type: return new CompositeTypeDesc(Tag);
- case DW_TAG_subrange_type: return new SubrangeDesc();
- case DW_TAG_enumerator: return new EnumeratorDesc();
- case DW_TAG_return_variable:
- case DW_TAG_arg_variable:
- case DW_TAG_auto_variable: return new VariableDesc(Tag);
- default: break;
+ // If we already had an entry for this block, just return it.
+ if (!Entry.Symbols.isNull()) {
+ assert(BB->getParent() == Entry.Fn && "Parent changed");
+ if (Entry.Symbols.is<MCSymbol*>())
+ return Entry.Symbols.get<MCSymbol*>();
+ return (*Entry.Symbols.get<std::vector<MCSymbol*>*>())[0];
}
- return NULL;
-}
-/// getLinkage - get linkage appropriate for this type of descriptor.
-///
-GlobalValue::LinkageTypes DebugInfoDesc::getLinkage() const {
- return GlobalValue::InternalLinkage;
+ // Otherwise, this is a new entry, create a new symbol for it and add an
+ // entry to BBCallbacks so we can be notified if the BB is deleted or RAUWd.
+ BBCallbacks.push_back(BB);
+ BBCallbacks.back().setMap(this);
+ Entry.Index = BBCallbacks.size()-1;
+ Entry.Fn = BB->getParent();
+ MCSymbol *Result = Context.CreateTempSymbol();
+ Entry.Symbols = Result;
+ return Result;
}
-/// ApplyToFields - Target the vistor to the fields of the descriptor.
-///
-void DebugInfoDesc::ApplyToFields(DIVisitor *Visitor) {
- Visitor->Apply(Tag);
-}
+std::vector<MCSymbol*>
+MMIAddrLabelMap::getAddrLabelSymbolToEmit(BasicBlock *BB) {
+ assert(BB->hasAddressTaken() &&
+ "Shouldn't get label for block without address taken");
+ AddrLabelSymEntry &Entry = AddrLabelSymbols[BB];
-//===----------------------------------------------------------------------===//
+ std::vector<MCSymbol*> Result;
-AnchorDesc::AnchorDesc()
-: DebugInfoDesc(DW_TAG_anchor)
-, AnchorTag(0)
-{}
-AnchorDesc::AnchorDesc(AnchoredDesc *D)
-: DebugInfoDesc(DW_TAG_anchor)
-, AnchorTag(D->getTag())
-{}
-
-// Implement isa/cast/dyncast.
-bool AnchorDesc::classof(const DebugInfoDesc *D) {
- return D->getTag() == DW_TAG_anchor;
-}
-
-/// getLinkage - get linkage appropriate for this type of descriptor.
-///
-GlobalValue::LinkageTypes AnchorDesc::getLinkage() const {
- return GlobalValue::LinkOnceLinkage;
+ // If we already had an entry for this block, just return it.
+ if (Entry.Symbols.isNull())
+ Result.push_back(getAddrLabelSymbol(BB));
+ else if (MCSymbol *Sym = Entry.Symbols.dyn_cast<MCSymbol*>())
+ Result.push_back(Sym);
+ else
+ Result = *Entry.Symbols.get<std::vector<MCSymbol*>*>();
+ return Result;
}
-/// ApplyToFields - Target the visitor to the fields of the TransUnitDesc.
-///
-void AnchorDesc::ApplyToFields(DIVisitor *Visitor) {
- DebugInfoDesc::ApplyToFields(Visitor);
-
- Visitor->Apply(AnchorTag);
-}
-/// getDescString - Return a string used to compose global names and labels. A
-/// A global variable name needs to be defined for each debug descriptor that is
-/// anchored. NOTE: that each global variable named here also needs to be added
-/// to the list of names left external in the internalizer.
-/// ExternalNames.insert("llvm.dbg.compile_units");
-/// ExternalNames.insert("llvm.dbg.global_variables");
-/// ExternalNames.insert("llvm.dbg.subprograms");
-const char *AnchorDesc::getDescString() const {
- switch (AnchorTag) {
- case DW_TAG_compile_unit: return CompileUnitDesc::AnchorString;
- case DW_TAG_variable: return GlobalVariableDesc::AnchorString;
- case DW_TAG_subprogram: return SubprogramDesc::AnchorString;
- default: break;
- }
+/// takeDeletedSymbolsForFunction - If we have any deleted symbols for F, return
+/// them.
+void MMIAddrLabelMap::
+takeDeletedSymbolsForFunction(Function *F, std::vector<MCSymbol*> &Result) {
+ DenseMap<AssertingVH<Function>, std::vector<MCSymbol*> >::iterator I =
+ DeletedAddrLabelsNeedingEmission.find(F);
- assert(0 && "Tag does not have a case for anchor string");
- return "";
-}
+ // If there are no entries for the function, just return.
+ if (I == DeletedAddrLabelsNeedingEmission.end()) return;
-/// getTypeString - Return a string used to label this descriptors type.
-///
-const char *AnchorDesc::getTypeString() const {
- return "llvm.dbg.anchor.type";
+ // Otherwise, take the list.
+ std::swap(Result, I->second);
+ DeletedAddrLabelsNeedingEmission.erase(I);
}
-#ifndef NDEBUG
-void AnchorDesc::dump() {
- cerr << getDescString() << " "
- << "Version(" << getVersion() << "), "
- << "Tag(" << getTag() << "), "
- << "AnchorTag(" << AnchorTag << ")\n";
-}
-#endif
-//===----------------------------------------------------------------------===//
+void MMIAddrLabelMap::UpdateForDeletedBlock(BasicBlock *BB) {
+ // If the block got deleted, there is no need for the symbol. If the symbol
+ // was already emitted, we can just forget about it, otherwise we need to
+ // queue it up for later emission when the function is output.
+ AddrLabelSymEntry Entry = AddrLabelSymbols[BB];
+ AddrLabelSymbols.erase(BB);
+ assert(!Entry.Symbols.isNull() && "Didn't have a symbol, why a callback?");
+ BBCallbacks[Entry.Index] = nullptr; // Clear the callback.
-AnchoredDesc::AnchoredDesc(unsigned T)
-: DebugInfoDesc(T)
-, Anchor(NULL)
-{}
+ assert((BB->getParent() == nullptr || BB->getParent() == Entry.Fn) &&
+ "Block/parent mismatch");
-/// ApplyToFields - Target the visitor to the fields of the AnchoredDesc.
-///
-void AnchoredDesc::ApplyToFields(DIVisitor *Visitor) {
- DebugInfoDesc::ApplyToFields(Visitor);
-
- Visitor->Apply(Anchor);
-}
-
-//===----------------------------------------------------------------------===//
+ // Handle both the single and the multiple symbols cases.
+ if (MCSymbol *Sym = Entry.Symbols.dyn_cast<MCSymbol*>()) {
+ if (Sym->isDefined())
+ return;
-CompileUnitDesc::CompileUnitDesc()
-: AnchoredDesc(DW_TAG_compile_unit)
-, Language(0)
-, FileName("")
-, Directory("")
-, Producer("")
-{}
-
-// Implement isa/cast/dyncast.
-bool CompileUnitDesc::classof(const DebugInfoDesc *D) {
- return D->getTag() == DW_TAG_compile_unit;
-}
+ // If the block is not yet defined, we need to emit it at the end of the
+ // function. Add the symbol to the DeletedAddrLabelsNeedingEmission list
+ // for the containing Function. Since the block is being deleted, its
+ // parent may already be removed, we have to get the function from 'Entry'.
+ DeletedAddrLabelsNeedingEmission[Entry.Fn].push_back(Sym);
+ } else {
+ std::vector<MCSymbol*> *Syms = Entry.Symbols.get<std::vector<MCSymbol*>*>();
+
+ for (unsigned i = 0, e = Syms->size(); i != e; ++i) {
+ MCSymbol *Sym = (*Syms)[i];
+ if (Sym->isDefined()) continue; // Ignore already emitted labels.
+
+ // If the block is not yet defined, we need to emit it at the end of the
+ // function. Add the symbol to the DeletedAddrLabelsNeedingEmission list
+ // for the containing Function. Since the block is being deleted, its
+ // parent may already be removed, we have to get the function from
+ // 'Entry'.
+ DeletedAddrLabelsNeedingEmission[Entry.Fn].push_back(Sym);
+ }
-/// ApplyToFields - Target the visitor to the fields of the CompileUnitDesc.
-///
-void CompileUnitDesc::ApplyToFields(DIVisitor *Visitor) {
- AnchoredDesc::ApplyToFields(Visitor);
-
- // Handle cases out of sync with compiler.
- if (getVersion() == 0) {
- unsigned DebugVersion;
- Visitor->Apply(DebugVersion);
+ // The entry is deleted, free the memory associated with the symbol list.
+ delete Syms;
}
-
- Visitor->Apply(Language);
- Visitor->Apply(FileName);
- Visitor->Apply(Directory);
- Visitor->Apply(Producer);
-}
-
-/// getDescString - Return a string used to compose global names and labels.
-///
-const char *CompileUnitDesc::getDescString() const {
- return "llvm.dbg.compile_unit";
-}
-
-/// getTypeString - Return a string used to label this descriptors type.
-///
-const char *CompileUnitDesc::getTypeString() const {
- return "llvm.dbg.compile_unit.type";
-}
-
-/// getAnchorString - Return a string used to label this descriptor's anchor.
-///
-const char *const CompileUnitDesc::AnchorString = "llvm.dbg.compile_units";
-const char *CompileUnitDesc::getAnchorString() const {
- return AnchorString;
-}
-
-#ifndef NDEBUG
-void CompileUnitDesc::dump() {
- cerr << getDescString() << " "
- << "Version(" << getVersion() << "), "
- << "Tag(" << getTag() << "), "
- << "Anchor(" << getAnchor() << "), "
- << "Language(" << Language << "), "
- << "FileName(\"" << FileName << "\"), "
- << "Directory(\"" << Directory << "\"), "
- << "Producer(\"" << Producer << "\")\n";
-}
-#endif
-
-//===----------------------------------------------------------------------===//
-
-TypeDesc::TypeDesc(unsigned T)
-: DebugInfoDesc(T)
-, Context(NULL)
-, Name("")
-, File(NULL)
-, Line(0)
-, Size(0)
-, Align(0)
-, Offset(0)
-, Flags(0)
-{}
-
-/// ApplyToFields - Target the visitor to the fields of the TypeDesc.
-///
-void TypeDesc::ApplyToFields(DIVisitor *Visitor) {
- DebugInfoDesc::ApplyToFields(Visitor);
-
- Visitor->Apply(Context);
- Visitor->Apply(Name);
- Visitor->Apply(File);
- Visitor->Apply(Line);
- Visitor->Apply(Size);
- Visitor->Apply(Align);
- Visitor->Apply(Offset);
- if (getVersion() > LLVMDebugVersion4) Visitor->Apply(Flags);
-}
-
-/// getDescString - Return a string used to compose global names and labels.
-///
-const char *TypeDesc::getDescString() const {
- return "llvm.dbg.type";
-}
-
-/// getTypeString - Return a string used to label this descriptor's type.
-///
-const char *TypeDesc::getTypeString() const {
- return "llvm.dbg.type.type";
-}
-
-#ifndef NDEBUG
-void TypeDesc::dump() {
- cerr << getDescString() << " "
- << "Version(" << getVersion() << "), "
- << "Tag(" << getTag() << "), "
- << "Context(" << Context << "), "
- << "Name(\"" << Name << "\"), "
- << "File(" << File << "), "
- << "Line(" << Line << "), "
- << "Size(" << Size << "), "
- << "Align(" << Align << "), "
- << "Offset(" << Offset << "), "
- << "Flags(" << Flags << ")\n";
-}
-#endif
-
-//===----------------------------------------------------------------------===//
-
-BasicTypeDesc::BasicTypeDesc()
-: TypeDesc(DW_TAG_base_type)
-, Encoding(0)
-{}
-
-// Implement isa/cast/dyncast.
-bool BasicTypeDesc::classof(const DebugInfoDesc *D) {
- return D->getTag() == DW_TAG_base_type;
-}
-
-/// ApplyToFields - Target the visitor to the fields of the BasicTypeDesc.
-///
-void BasicTypeDesc::ApplyToFields(DIVisitor *Visitor) {
- TypeDesc::ApplyToFields(Visitor);
-
- Visitor->Apply(Encoding);
}
-/// getDescString - Return a string used to compose global names and labels.
-///
-const char *BasicTypeDesc::getDescString() const {
- return "llvm.dbg.basictype";
-}
+void MMIAddrLabelMap::UpdateForRAUWBlock(BasicBlock *Old, BasicBlock *New) {
+ // Get the entry for the RAUW'd block and remove it from our map.
+ AddrLabelSymEntry OldEntry = AddrLabelSymbols[Old];
+ AddrLabelSymbols.erase(Old);
+ assert(!OldEntry.Symbols.isNull() && "Didn't have a symbol, why a callback?");
-/// getTypeString - Return a string used to label this descriptor's type.
-///
-const char *BasicTypeDesc::getTypeString() const {
- return "llvm.dbg.basictype.type";
-}
+ AddrLabelSymEntry &NewEntry = AddrLabelSymbols[New];
-#ifndef NDEBUG
-void BasicTypeDesc::dump() {
- cerr << getDescString() << " "
- << "Version(" << getVersion() << "), "
- << "Tag(" << getTag() << "), "
- << "Context(" << getContext() << "), "
- << "Name(\"" << getName() << "\"), "
- << "Size(" << getSize() << "), "
- << "Encoding(" << Encoding << ")\n";
-}
-#endif
-
-//===----------------------------------------------------------------------===//
-
-DerivedTypeDesc::DerivedTypeDesc(unsigned T)
-: TypeDesc(T)
-, FromType(NULL)
-{}
-
-// Implement isa/cast/dyncast.
-bool DerivedTypeDesc::classof(const DebugInfoDesc *D) {
- unsigned T = D->getTag();
- switch (T) {
- case DW_TAG_typedef:
- case DW_TAG_pointer_type:
- case DW_TAG_reference_type:
- case DW_TAG_const_type:
- case DW_TAG_volatile_type:
- case DW_TAG_restrict_type:
- case DW_TAG_member:
- case DW_TAG_inheritance:
- return true;
- default: break;
+ // If New is not address taken, just move our symbol over to it.
+ if (NewEntry.Symbols.isNull()) {
+ BBCallbacks[OldEntry.Index].setPtr(New); // Update the callback.
+ NewEntry = OldEntry; // Set New's entry.
+ return;
}
- return false;
-}
-/// ApplyToFields - Target the visitor to the fields of the DerivedTypeDesc.
-///
-void DerivedTypeDesc::ApplyToFields(DIVisitor *Visitor) {
- TypeDesc::ApplyToFields(Visitor);
-
- Visitor->Apply(FromType);
-}
+ BBCallbacks[OldEntry.Index] = nullptr; // Update the callback.
-/// getDescString - Return a string used to compose global names and labels.
-///
-const char *DerivedTypeDesc::getDescString() const {
- return "llvm.dbg.derivedtype";
-}
-
-/// getTypeString - Return a string used to label this descriptor's type.
-///
-const char *DerivedTypeDesc::getTypeString() const {
- return "llvm.dbg.derivedtype.type";
-}
-
-#ifndef NDEBUG
-void DerivedTypeDesc::dump() {
- cerr << getDescString() << " "
- << "Version(" << getVersion() << "), "
- << "Tag(" << getTag() << "), "
- << "Context(" << getContext() << "), "
- << "Name(\"" << getName() << "\"), "
- << "Size(" << getSize() << "), "
- << "File(" << getFile() << "), "
- << "Line(" << getLine() << "), "
- << "FromType(" << FromType << ")\n";
-}
-#endif
-
-//===----------------------------------------------------------------------===//
-
-CompositeTypeDesc::CompositeTypeDesc(unsigned T)
-: DerivedTypeDesc(T)
-, Elements()
-{}
-
-// Implement isa/cast/dyncast.
-bool CompositeTypeDesc::classof(const DebugInfoDesc *D) {
- unsigned T = D->getTag();
- switch (T) {
- case DW_TAG_array_type:
- case DW_TAG_structure_type:
- case DW_TAG_union_type:
- case DW_TAG_enumeration_type:
- case DW_TAG_vector_type:
- case DW_TAG_subroutine_type:
- return true;
- default: break;
+ // Otherwise, we need to add the old symbol to the new block's set. If it is
+ // just a single entry, upgrade it to a symbol list.
+ if (MCSymbol *PrevSym = NewEntry.Symbols.dyn_cast<MCSymbol*>()) {
+ std::vector<MCSymbol*> *SymList = new std::vector<MCSymbol*>();
+ SymList->push_back(PrevSym);
+ NewEntry.Symbols = SymList;
}
- return false;
-}
-
-/// ApplyToFields - Target the visitor to the fields of the CompositeTypeDesc.
-///
-void CompositeTypeDesc::ApplyToFields(DIVisitor *Visitor) {
- DerivedTypeDesc::ApplyToFields(Visitor);
-
- Visitor->Apply(Elements);
-}
-
-/// getDescString - Return a string used to compose global names and labels.
-///
-const char *CompositeTypeDesc::getDescString() const {
- return "llvm.dbg.compositetype";
-}
-
-/// getTypeString - Return a string used to label this descriptor's type.
-///
-const char *CompositeTypeDesc::getTypeString() const {
- return "llvm.dbg.compositetype.type";
-}
-
-#ifndef NDEBUG
-void CompositeTypeDesc::dump() {
- cerr << getDescString() << " "
- << "Version(" << getVersion() << "), "
- << "Tag(" << getTag() << "), "
- << "Context(" << getContext() << "), "
- << "Name(\"" << getName() << "\"), "
- << "Size(" << getSize() << "), "
- << "File(" << getFile() << "), "
- << "Line(" << getLine() << "), "
- << "FromType(" << getFromType() << "), "
- << "Elements.size(" << Elements.size() << ")\n";
-}
-#endif
-
-//===----------------------------------------------------------------------===//
-
-SubrangeDesc::SubrangeDesc()
-: DebugInfoDesc(DW_TAG_subrange_type)
-, Lo(0)
-, Hi(0)
-{}
-
-// Implement isa/cast/dyncast.
-bool SubrangeDesc::classof(const DebugInfoDesc *D) {
- return D->getTag() == DW_TAG_subrange_type;
-}
-
-/// ApplyToFields - Target the visitor to the fields of the SubrangeDesc.
-///
-void SubrangeDesc::ApplyToFields(DIVisitor *Visitor) {
- DebugInfoDesc::ApplyToFields(Visitor);
-
- Visitor->Apply(Lo);
- Visitor->Apply(Hi);
-}
-
-/// getDescString - Return a string used to compose global names and labels.
-///
-const char *SubrangeDesc::getDescString() const {
- return "llvm.dbg.subrange";
-}
-
-/// getTypeString - Return a string used to label this descriptor's type.
-///
-const char *SubrangeDesc::getTypeString() const {
- return "llvm.dbg.subrange.type";
-}
-#ifndef NDEBUG
-void SubrangeDesc::dump() {
- cerr << getDescString() << " "
- << "Version(" << getVersion() << "), "
- << "Tag(" << getTag() << "), "
- << "Lo(" << Lo << "), "
- << "Hi(" << Hi << ")\n";
-}
-#endif
-
-//===----------------------------------------------------------------------===//
-
-EnumeratorDesc::EnumeratorDesc()
-: DebugInfoDesc(DW_TAG_enumerator)
-, Name("")
-, Value(0)
-{}
-
-// Implement isa/cast/dyncast.
-bool EnumeratorDesc::classof(const DebugInfoDesc *D) {
- return D->getTag() == DW_TAG_enumerator;
-}
-
-/// ApplyToFields - Target the visitor to the fields of the EnumeratorDesc.
-///
-void EnumeratorDesc::ApplyToFields(DIVisitor *Visitor) {
- DebugInfoDesc::ApplyToFields(Visitor);
-
- Visitor->Apply(Name);
- Visitor->Apply(Value);
-}
-
-/// getDescString - Return a string used to compose global names and labels.
-///
-const char *EnumeratorDesc::getDescString() const {
- return "llvm.dbg.enumerator";
-}
-
-/// getTypeString - Return a string used to label this descriptor's type.
-///
-const char *EnumeratorDesc::getTypeString() const {
- return "llvm.dbg.enumerator.type";
-}
-
-#ifndef NDEBUG
-void EnumeratorDesc::dump() {
- cerr << getDescString() << " "
- << "Version(" << getVersion() << "), "
- << "Tag(" << getTag() << "), "
- << "Name(" << Name << "), "
- << "Value(" << Value << ")\n";
-}
-#endif
+ std::vector<MCSymbol*> *SymList =
+ NewEntry.Symbols.get<std::vector<MCSymbol*>*>();
-//===----------------------------------------------------------------------===//
-
-VariableDesc::VariableDesc(unsigned T)
-: DebugInfoDesc(T)
-, Context(NULL)
-, Name("")
-, File(NULL)
-, Line(0)
-, TyDesc(0)
-{}
-
-// Implement isa/cast/dyncast.
-bool VariableDesc::classof(const DebugInfoDesc *D) {
- unsigned T = D->getTag();
- switch (T) {
- case DW_TAG_auto_variable:
- case DW_TAG_arg_variable:
- case DW_TAG_return_variable:
- return true;
- default: break;
+ // If the old entry was a single symbol, add it.
+ if (MCSymbol *Sym = OldEntry.Symbols.dyn_cast<MCSymbol*>()) {
+ SymList->push_back(Sym);
+ return;
}
- return false;
-}
-/// ApplyToFields - Target the visitor to the fields of the VariableDesc.
-///
-void VariableDesc::ApplyToFields(DIVisitor *Visitor) {
- DebugInfoDesc::ApplyToFields(Visitor);
-
- Visitor->Apply(Context);
- Visitor->Apply(Name);
- Visitor->Apply(File);
- Visitor->Apply(Line);
- Visitor->Apply(TyDesc);
+ // Otherwise, concatenate the list.
+ std::vector<MCSymbol*> *Syms =OldEntry.Symbols.get<std::vector<MCSymbol*>*>();
+ SymList->insert(SymList->end(), Syms->begin(), Syms->end());
+ delete Syms;
}
-/// getDescString - Return a string used to compose global names and labels.
-///
-const char *VariableDesc::getDescString() const {
- return "llvm.dbg.variable";
-}
-/// getTypeString - Return a string used to label this descriptor's type.
-///
-const char *VariableDesc::getTypeString() const {
- return "llvm.dbg.variable.type";
+void MMIAddrLabelMapCallbackPtr::deleted() {
+ Map->UpdateForDeletedBlock(cast<BasicBlock>(getValPtr()));
}
-#ifndef NDEBUG
-void VariableDesc::dump() {
- cerr << getDescString() << " "
- << "Version(" << getVersion() << "), "
- << "Tag(" << getTag() << "), "
- << "Context(" << Context << "), "
- << "Name(\"" << Name << "\"), "
- << "File(" << File << "), "
- << "Line(" << Line << "), "
- << "TyDesc(" << TyDesc << ")\n";
+void MMIAddrLabelMapCallbackPtr::allUsesReplacedWith(Value *V2) {
+ Map->UpdateForRAUWBlock(cast<BasicBlock>(getValPtr()), cast<BasicBlock>(V2));
}
-#endif
-//===----------------------------------------------------------------------===//
-
-GlobalDesc::GlobalDesc(unsigned T)
-: AnchoredDesc(T)
-, Context(0)
-, Name("")
-, FullName("")
-, LinkageName("")
-, File(NULL)
-, Line(0)
-, TyDesc(NULL)
-, IsStatic(false)
-, IsDefinition(false)
-{}
-
-/// ApplyToFields - Target the visitor to the fields of the global.
-///
-void GlobalDesc::ApplyToFields(DIVisitor *Visitor) {
- AnchoredDesc::ApplyToFields(Visitor);
-
- Visitor->Apply(Context);
- Visitor->Apply(Name);
- Visitor->Apply(FullName);
- Visitor->Apply(LinkageName);
- Visitor->Apply(File);
- Visitor->Apply(Line);
- Visitor->Apply(TyDesc);
- Visitor->Apply(IsStatic);
- Visitor->Apply(IsDefinition);
-}
//===----------------------------------------------------------------------===//
-GlobalVariableDesc::GlobalVariableDesc()
-: GlobalDesc(DW_TAG_variable)
-, Global(NULL)
-{}
-
-// Implement isa/cast/dyncast.
-bool GlobalVariableDesc::classof(const DebugInfoDesc *D) {
- return D->getTag() == DW_TAG_variable;
-}
-
-/// ApplyToFields - Target the visitor to the fields of the GlobalVariableDesc.
-///
-void GlobalVariableDesc::ApplyToFields(DIVisitor *Visitor) {
- GlobalDesc::ApplyToFields(Visitor);
-
- Visitor->Apply(Global);
-}
-
-/// getDescString - Return a string used to compose global names and labels.
-///
-const char *GlobalVariableDesc::getDescString() const {
- return "llvm.dbg.global_variable";
-}
-
-/// getTypeString - Return a string used to label this descriptors type.
-///
-const char *GlobalVariableDesc::getTypeString() const {
- return "llvm.dbg.global_variable.type";
-}
-
-/// getAnchorString - Return a string used to label this descriptor's anchor.
-///
-const char *const GlobalVariableDesc::AnchorString = "llvm.dbg.global_variables";
-const char *GlobalVariableDesc::getAnchorString() const {
- return AnchorString;
-}
-
-#ifndef NDEBUG
-void GlobalVariableDesc::dump() {
- cerr << getDescString() << " "
- << "Version(" << getVersion() << "), "
- << "Tag(" << getTag() << "), "
- << "Anchor(" << getAnchor() << "), "
- << "Name(\"" << getName() << "\"), "
- << "FullName(\"" << getFullName() << "\"), "
- << "LinkageName(\"" << getLinkageName() << "\"), "
- << "File(" << getFile() << "),"
- << "Line(" << getLine() << "),"
- << "Type(" << getType() << "), "
- << "IsStatic(" << (isStatic() ? "true" : "false") << "), "
- << "IsDefinition(" << (isDefinition() ? "true" : "false") << "), "
- << "Global(" << Global << ")\n";
-}
-#endif
-
-//===----------------------------------------------------------------------===//
-
-SubprogramDesc::SubprogramDesc()
-: GlobalDesc(DW_TAG_subprogram)
-{}
-
-// Implement isa/cast/dyncast.
-bool SubprogramDesc::classof(const DebugInfoDesc *D) {
- return D->getTag() == DW_TAG_subprogram;
-}
-
-/// ApplyToFields - Target the visitor to the fields of the
-/// SubprogramDesc.
-void SubprogramDesc::ApplyToFields(DIVisitor *Visitor) {
- GlobalDesc::ApplyToFields(Visitor);
-}
-
-/// getDescString - Return a string used to compose global names and labels.
-///
-const char *SubprogramDesc::getDescString() const {
- return "llvm.dbg.subprogram";
-}
-
-/// getTypeString - Return a string used to label this descriptors type.
-///
-const char *SubprogramDesc::getTypeString() const {
- return "llvm.dbg.subprogram.type";
-}
-
-/// getAnchorString - Return a string used to label this descriptor's anchor.
-///
-const char *const SubprogramDesc::AnchorString = "llvm.dbg.subprograms";
-const char *SubprogramDesc::getAnchorString() const {
- return AnchorString;
-}
-
-#ifndef NDEBUG
-void SubprogramDesc::dump() {
- cerr << getDescString() << " "
- << "Version(" << getVersion() << "), "
- << "Tag(" << getTag() << "), "
- << "Anchor(" << getAnchor() << "), "
- << "Name(\"" << getName() << "\"), "
- << "FullName(\"" << getFullName() << "\"), "
- << "LinkageName(\"" << getLinkageName() << "\"), "
- << "File(" << getFile() << "),"
- << "Line(" << getLine() << "),"
- << "Type(" << getType() << "), "
- << "IsStatic(" << (isStatic() ? "true" : "false") << "), "
- << "IsDefinition(" << (isDefinition() ? "true" : "false") << ")\n";
-}
-#endif
-
-//===----------------------------------------------------------------------===//
-
-BlockDesc::BlockDesc()
-: DebugInfoDesc(DW_TAG_lexical_block)
-, Context(NULL)
-{}
-
-// Implement isa/cast/dyncast.
-bool BlockDesc::classof(const DebugInfoDesc *D) {
- return D->getTag() == DW_TAG_lexical_block;
-}
-
-/// ApplyToFields - Target the visitor to the fields of the BlockDesc.
-///
-void BlockDesc::ApplyToFields(DIVisitor *Visitor) {
- DebugInfoDesc::ApplyToFields(Visitor);
-
- Visitor->Apply(Context);
-}
-
-/// getDescString - Return a string used to compose global names and labels.
-///
-const char *BlockDesc::getDescString() const {
- return "llvm.dbg.block";
-}
-
-/// getTypeString - Return a string used to label this descriptors type.
-///
-const char *BlockDesc::getTypeString() const {
- return "llvm.dbg.block.type";
-}
-
-#ifndef NDEBUG
-void BlockDesc::dump() {
- cerr << getDescString() << " "
- << "Version(" << getVersion() << "), "
- << "Tag(" << getTag() << "),"
- << "Context(" << Context << ")\n";
-}
-#endif
-
-//===----------------------------------------------------------------------===//
-
-DebugInfoDesc *DIDeserializer::Deserialize(Value *V) {
- return Deserialize(getGlobalVariable(V));
-}
-DebugInfoDesc *DIDeserializer::Deserialize(GlobalVariable *GV) {
- // Handle NULL.
- if (!GV) return NULL;
-
- // Check to see if it has been already deserialized.
- DebugInfoDesc *&Slot = GlobalDescs[GV];
- if (Slot) return Slot;
-
- // Get the Tag from the global.
- unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
-
- // Create an empty instance of the correct sort.
- Slot = DebugInfoDesc::DescFactory(Tag);
-
- // If not a user defined descriptor.
- if (Slot) {
- // Deserialize the fields.
- DIDeserializeVisitor DRAM(*this, GV);
- DRAM.ApplyToFields(Slot);
- }
-
- return Slot;
-}
-
-//===----------------------------------------------------------------------===//
-
-/// getStrPtrType - Return a "sbyte *" type.
-///
-const PointerType *DISerializer::getStrPtrType() {
- // If not already defined.
- if (!StrPtrTy) {
- // Construct the pointer to signed bytes.
- StrPtrTy = PointerType::getUnqual(Type::Int8Ty);
- }
-
- return StrPtrTy;
-}
-
-/// getEmptyStructPtrType - Return a "{ }*" type.
-///
-const PointerType *DISerializer::getEmptyStructPtrType() {
- // If not already defined.
- if (EmptyStructPtrTy) return EmptyStructPtrTy;
-
- // Construct the pointer to empty structure type.
- const StructType *EmptyStructTy = StructType::get(NULL, NULL);
-
- // Construct the pointer to empty structure type.
- EmptyStructPtrTy = PointerType::getUnqual(EmptyStructTy);
- return EmptyStructPtrTy;
-}
-
-/// getTagType - Return the type describing the specified descriptor (via tag.)
-///
-const StructType *DISerializer::getTagType(DebugInfoDesc *DD) {
- // Attempt to get the previously defined type.
- StructType *&Ty = TagTypes[DD->getTag()];
-
- // If not already defined.
- if (!Ty) {
- // Set up fields vector.
- std::vector<const Type*> Fields;
- // Get types of fields.
- DIGetTypesVisitor GTAM(*this, Fields);
- GTAM.ApplyToFields(DD);
-
- // Construct structured type.
- Ty = StructType::get(Fields);
-
- // Register type name with module.
- M->addTypeName(DD->getTypeString(), Ty);
- }
-
- return Ty;
+MachineModuleInfo::MachineModuleInfo(const MCAsmInfo &MAI,
+ const MCRegisterInfo &MRI,
+ const MCObjectFileInfo *MOFI)
+ : ImmutablePass(ID), Context(&MAI, &MRI, MOFI, nullptr, false) {
+ initializeMachineModuleInfoPass(*PassRegistry::getPassRegistry());
}
-/// getString - Construct the string as constant string global.
-///
-Constant *DISerializer::getString(const std::string &String) {
- // Check string cache for previous edition.
- Constant *&Slot = StringCache[String];
-
- // Return Constant if previously defined.
- if (Slot) return Slot;
-
- // If empty string then use a sbyte* null instead.
- if (String.empty()) {
- Slot = ConstantPointerNull::get(getStrPtrType());
- } else {
- // Construct string as an llvm constant.
- Constant *ConstStr = ConstantArray::get(String);
-
- // Otherwise create and return a new string global.
- GlobalVariable *StrGV = new GlobalVariable(ConstStr->getType(), true,
- GlobalVariable::InternalLinkage,
- ConstStr, ".str", M);
- StrGV->setSection("llvm.metadata");
-
- // Convert to generic string pointer.
- Slot = ConstantExpr::getBitCast(StrGV, getStrPtrType());
- }
-
- return Slot;
-
-}
-
-/// Serialize - Recursively cast the specified descriptor into a GlobalVariable
-/// so that it can be serialized to a .bc or .ll file.
-GlobalVariable *DISerializer::Serialize(DebugInfoDesc *DD) {
- // Check if the DebugInfoDesc is already in the map.
- GlobalVariable *&Slot = DescGlobals[DD];
-
- // See if DebugInfoDesc exists, if so return prior GlobalVariable.
- if (Slot) return Slot;
-
- // Get the type associated with the Tag.
- const StructType *Ty = getTagType(DD);
-
- // Create the GlobalVariable early to prevent infinite recursion.
- GlobalVariable *GV = new GlobalVariable(Ty, true, DD->getLinkage(),
- NULL, DD->getDescString(), M);
- GV->setSection("llvm.metadata");
-
- // Insert new GlobalVariable in DescGlobals map.
- Slot = GV;
-
- // Set up elements vector
- std::vector<Constant*> Elements;
- // Add fields.
- DISerializeVisitor SRAM(*this, Elements);
- SRAM.ApplyToFields(DD);
-
- // Set the globals initializer.
- GV->setInitializer(ConstantStruct::get(Ty, Elements));
-
- return GV;
-}
-
-/// addDescriptor - Directly connect DD with existing GV.
-void DISerializer::addDescriptor(DebugInfoDesc *DD,
- GlobalVariable *GV) {
- DescGlobals[DD] = GV;
+MachineModuleInfo::MachineModuleInfo()
+ : ImmutablePass(ID), Context(nullptr, nullptr, nullptr) {
+ llvm_unreachable("This MachineModuleInfo constructor should never be called, "
+ "MMI should always be explicitly constructed by "
+ "LLVMTargetMachine");
}
-//===----------------------------------------------------------------------===//
-
-/// Verify - Return true if the GlobalVariable appears to be a valid
-/// serialization of a DebugInfoDesc.
-bool DIVerifier::Verify(Value *V) {
- return !V || Verify(getGlobalVariable(V));
+MachineModuleInfo::~MachineModuleInfo() {
}
-bool DIVerifier::Verify(GlobalVariable *GV) {
- // NULLs are valid.
- if (!GV) return true;
-
- // Check prior validity.
- unsigned &ValiditySlot = Validity[GV];
-
- // If visited before then use old state.
- if (ValiditySlot) return ValiditySlot == Valid;
-
- // Assume validity for the time being (recursion.)
- ValiditySlot = Valid;
-
- // Make sure the global is internal or link once (anchor.)
- if (GV->getLinkage() != GlobalValue::InternalLinkage &&
- GV->getLinkage() != GlobalValue::LinkOnceLinkage) {
- ValiditySlot = Invalid;
- return false;
- }
- // Get the Tag.
- unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
-
- // Check for user defined descriptors.
- if (Tag == DW_TAG_invalid) {
- ValiditySlot = Valid;
- return true;
- }
-
- // Get the Version.
- unsigned Version = DebugInfoDesc::VersionFromGlobal(GV);
-
- // Check for version mismatch.
- if (Version != LLVMDebugVersion) {
- ValiditySlot = Invalid;
- return false;
- }
+bool MachineModuleInfo::doInitialization(Module &M) {
- // Construct an empty DebugInfoDesc.
- DebugInfoDesc *DD = DebugInfoDesc::DescFactory(Tag);
-
- // Allow for user defined descriptors.
- if (!DD) return true;
-
- // Get the initializer constant.
- ConstantStruct *CI = cast<ConstantStruct>(GV->getInitializer());
-
- // Get the operand count.
- unsigned N = CI->getNumOperands();
-
- // Get the field count.
- unsigned &CountSlot = Counts[Tag];
-
- if (!CountSlot)
- // Check the operand count to the field count
- CountSlot = CountFields(DD);
-
- // Field count must be at most equal operand count.
- if (CountSlot > N) {
- delete DD;
- ValiditySlot = Invalid;
- return false;
- }
-
- // Check each field for valid type.
- DIVerifyVisitor VRAM(*this, GV);
- VRAM.ApplyToFields(DD);
-
- // Release empty DebugInfoDesc.
- delete DD;
-
- // If fields are not valid.
- if (!VRAM.isValid()) {
- ValiditySlot = Invalid;
- return false;
- }
-
- return true;
-}
+ ObjFileMMI = nullptr;
+ CurCallSite = 0;
+ CallsEHReturn = 0;
+ CallsUnwindInit = 0;
+ DbgInfoAvailable = UsesVAFloatArgument = UsesMorestackAddr = false;
+ // Always emit some info, by default "no personality" info.
+ Personalities.push_back(nullptr);
+ PersonalityTypeCache = EHPersonality::Unknown;
+ AddrLabelSymbols = nullptr;
+ TheModule = nullptr;
-/// isVerified - Return true if the specified GV has already been
-/// verified as a debug information descriptor.
-bool DIVerifier::isVerified(GlobalVariable *GV) {
- unsigned &ValiditySlot = Validity[GV];
- if (ValiditySlot) return ValiditySlot == Valid;
return false;
}
-//===----------------------------------------------------------------------===//
-
-DebugScope::~DebugScope() {
- for (unsigned i = 0, N = Scopes.size(); i < N; ++i) delete Scopes[i];
- for (unsigned j = 0, M = Variables.size(); j < M; ++j) delete Variables[j];
-}
+bool MachineModuleInfo::doFinalization(Module &M) {
-//===----------------------------------------------------------------------===//
+ Personalities.clear();
-MachineModuleInfo::MachineModuleInfo()
-: ImmutablePass(&ID)
-, DR()
-, VR()
-, CompileUnits()
-, Directories()
-, SourceFiles()
-, Lines()
-, LabelIDList()
-, ScopeMap()
-, RootScope(NULL)
-, FrameMoves()
-, LandingPads()
-, Personalities()
-, CallsEHReturn(0)
-, CallsUnwindInit(0)
-{
- // Always emit "no personality" info
- Personalities.push_back(NULL);
-}
-MachineModuleInfo::~MachineModuleInfo() {
+ delete AddrLabelSymbols;
+ AddrLabelSymbols = nullptr;
-}
+ Context.reset();
-/// doInitialization - Initialize the state for a new module.
-///
-bool MachineModuleInfo::doInitialization() {
- return false;
-}
+ delete ObjFileMMI;
+ ObjFileMMI = nullptr;
-/// doFinalization - Tear down the state after completion of a module.
-///
-bool MachineModuleInfo::doFinalization() {
return false;
}
-/// BeginFunction - Begin gathering function meta information.
-///
-void MachineModuleInfo::BeginFunction(MachineFunction *MF) {
- // Coming soon.
-}
-
/// EndFunction - Discard function meta information.
///
void MachineModuleInfo::EndFunction() {
- // Clean up scope information.
- if (RootScope) {
- delete RootScope;
- ScopeMap.clear();
- RootScope = NULL;
- }
-
- // Clean up line info.
- Lines.clear();
-
// Clean up frame info.
- FrameMoves.clear();
-
+ FrameInstructions.clear();
+
// Clean up exception info.
LandingPads.clear();
+ CallSiteMap.clear();
TypeInfos.clear();
FilterIds.clear();
FilterEnds.clear();
CallsEHReturn = 0;
CallsUnwindInit = 0;
-}
-
-/// getDescFor - Convert a Value to a debug information descriptor.
-///
-// FIXME - use new Value type when available.
-DebugInfoDesc *MachineModuleInfo::getDescFor(Value *V) {
- return DR.Deserialize(V);
+ VariableDbgInfos.clear();
}
/// AnalyzeModule - Scan the module for global debug information.
///
-void MachineModuleInfo::AnalyzeModule(Module &M) {
- SetupCompileUnits(M);
-
- // Insert functions in the llvm.used array into UsedFunctions.
- GlobalVariable *GV = M.getGlobalVariable("llvm.used");
+void MachineModuleInfo::AnalyzeModule(const Module &M) {
+ // Insert functions in the llvm.used array (but not llvm.compiler.used) into
+ // UsedFunctions.
+ const GlobalVariable *GV = M.getGlobalVariable("llvm.used");
if (!GV || !GV->hasInitializer()) return;
// Should be an array of 'i8*'.
- ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());
- if (InitList == 0) return;
-
- for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(InitList->getOperand(i)))
- if (CE->getOpcode() == Instruction::BitCast)
- if (Function *F = dyn_cast<Function>(CE->getOperand(0)))
- UsedFunctions.insert(F);
- }
-}
-
-/// SetupCompileUnits - Set up the unique vector of compile units.
-///
-void MachineModuleInfo::SetupCompileUnits(Module &M) {
- std::vector<CompileUnitDesc *> CU;
- getAnchoredDescriptors<CompileUnitDesc>(M, CU);
-
- for (unsigned i = 0, N = CU.size(); i < N; i++) {
- CompileUnits.insert(CU[i]);
- }
-}
+ const ConstantArray *InitList = cast<ConstantArray>(GV->getInitializer());
-/// getCompileUnits - Return a vector of debug compile units.
-///
-const UniqueVector<CompileUnitDesc *> MachineModuleInfo::getCompileUnits()const{
- return CompileUnits;
+ for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
+ if (const Function *F =
+ dyn_cast<Function>(InitList->getOperand(i)->stripPointerCasts()))
+ UsedFunctions.insert(F);
}
-/// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
-/// named GlobalVariable.
-void
-MachineModuleInfo::getGlobalVariablesUsing(Module &M,
- const std::string &RootName,
- std::vector<GlobalVariable*>&Result){
- return ::getGlobalVariablesUsing(M, RootName, Result);
-}
+//===- Address of Block Management ----------------------------------------===//
-/// RecordSourceLine - Records location information and associates it with a
-/// debug label. Returns a unique label ID used to generate a label and
-/// provide correspondence to the source line list.
-unsigned MachineModuleInfo::RecordSourceLine(unsigned Line, unsigned Column,
- unsigned Source) {
- unsigned ID = NextLabelID();
- Lines.push_back(SourceLineInfo(Line, Column, Source, ID));
- return ID;
-}
-/// RecordSource - Register a source file with debug info. Returns an source
-/// ID.
-unsigned MachineModuleInfo::RecordSource(const std::string &Directory,
- const std::string &Source) {
- unsigned DirectoryID = Directories.insert(Directory);
- return SourceFiles.insert(SourceFileInfo(DirectoryID, Source));
-}
-unsigned MachineModuleInfo::RecordSource(const CompileUnitDesc *CompileUnit) {
- return RecordSource(CompileUnit->getDirectory(),
- CompileUnit->getFileName());
+/// getAddrLabelSymbol - Return the symbol to be used for the specified basic
+/// block when its address is taken. This cannot be its normal LBB label
+/// because the block may be accessed outside its containing function.
+MCSymbol *MachineModuleInfo::getAddrLabelSymbol(const BasicBlock *BB) {
+ // Lazily create AddrLabelSymbols.
+ if (!AddrLabelSymbols)
+ AddrLabelSymbols = new MMIAddrLabelMap(Context);
+ return AddrLabelSymbols->getAddrLabelSymbol(const_cast<BasicBlock*>(BB));
}
-/// RecordRegionStart - Indicate the start of a region.
-///
-unsigned MachineModuleInfo::RecordRegionStart(Value *V) {
- // FIXME - need to be able to handle split scopes because of bb cloning.
- DebugInfoDesc *ScopeDesc = DR.Deserialize(V);
- DebugScope *Scope = getOrCreateScope(ScopeDesc);
- unsigned ID = NextLabelID();
- if (!Scope->getStartLabelID()) Scope->setStartLabelID(ID);
- return ID;
+/// getAddrLabelSymbolToEmit - Return the symbol to be used for the specified
+/// basic block when its address is taken. If other blocks were RAUW'd to
+/// this one, we may have to emit them as well, return the whole set.
+std::vector<MCSymbol*> MachineModuleInfo::
+getAddrLabelSymbolToEmit(const BasicBlock *BB) {
+ // Lazily create AddrLabelSymbols.
+ if (!AddrLabelSymbols)
+ AddrLabelSymbols = new MMIAddrLabelMap(Context);
+ return AddrLabelSymbols->getAddrLabelSymbolToEmit(const_cast<BasicBlock*>(BB));
}
-/// RecordRegionEnd - Indicate the end of a region.
-///
-unsigned MachineModuleInfo::RecordRegionEnd(Value *V) {
- // FIXME - need to be able to handle split scopes because of bb cloning.
- DebugInfoDesc *ScopeDesc = DR.Deserialize(V);
- DebugScope *Scope = getOrCreateScope(ScopeDesc);
- unsigned ID = NextLabelID();
- Scope->setEndLabelID(ID);
- return ID;
-}
-/// RecordVariable - Indicate the declaration of a local variable.
-///
-void MachineModuleInfo::RecordVariable(GlobalValue *GV, unsigned FrameIndex) {
- VariableDesc *VD = cast<VariableDesc>(DR.Deserialize(GV));
- DebugScope *Scope = getOrCreateScope(VD->getContext());
- DebugVariable *DV = new DebugVariable(VD, FrameIndex);
- Scope->AddVariable(DV);
+/// takeDeletedSymbolsForFunction - If the specified function has had any
+/// references to address-taken blocks generated, but the block got deleted,
+/// return the symbol now so we can emit it. This prevents emitting a
+/// reference to a symbol that has no definition.
+void MachineModuleInfo::
+takeDeletedSymbolsForFunction(const Function *F,
+ std::vector<MCSymbol*> &Result) {
+ // If no blocks have had their addresses taken, we're done.
+ if (!AddrLabelSymbols) return;
+ return AddrLabelSymbols->
+ takeDeletedSymbolsForFunction(const_cast<Function*>(F), Result);
}
-/// getOrCreateScope - Returns the scope associated with the given descriptor.
-///
-DebugScope *MachineModuleInfo::getOrCreateScope(DebugInfoDesc *ScopeDesc) {
- DebugScope *&Slot = ScopeMap[ScopeDesc];
- if (!Slot) {
- // FIXME - breaks down when the context is an inlined function.
- DebugInfoDesc *ParentDesc = NULL;
- if (BlockDesc *Block = dyn_cast<BlockDesc>(ScopeDesc)) {
- ParentDesc = Block->getContext();
- }
- DebugScope *Parent = ParentDesc ? getOrCreateScope(ParentDesc) : NULL;
- Slot = new DebugScope(Parent, ScopeDesc);
- if (Parent) {
- Parent->AddScope(Slot);
- } else if (RootScope) {
- // FIXME - Add inlined function scopes to the root so we can delete
- // them later. Long term, handle inlined functions properly.
- RootScope->AddScope(Slot);
- } else {
- // First function is top level function.
- RootScope = Slot;
- }
- }
- return Slot;
-}
-
-//===-EH-------------------------------------------------------------------===//
+//===- EH -----------------------------------------------------------------===//
/// getOrCreateLandingPadInfo - Find or create an LandingPadInfo for the
/// specified MachineBasicBlock.
if (LP.LandingPadBlock == LandingPad)
return LP;
}
-
+
LandingPads.push_back(LandingPadInfo(LandingPad));
return LandingPads[N];
}
/// addInvoke - Provide the begin and end labels of an invoke style call and
/// associate it with a try landing pad block.
void MachineModuleInfo::addInvoke(MachineBasicBlock *LandingPad,
- unsigned BeginLabel, unsigned EndLabel) {
+ MCSymbol *BeginLabel, MCSymbol *EndLabel) {
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
LP.BeginLabels.push_back(BeginLabel);
LP.EndLabels.push_back(EndLabel);
/// addLandingPad - Provide the label of a try LandingPad block.
///
-unsigned MachineModuleInfo::addLandingPad(MachineBasicBlock *LandingPad) {
- unsigned LandingPadLabel = NextLabelID();
+MCSymbol *MachineModuleInfo::addLandingPad(MachineBasicBlock *LandingPad) {
+ MCSymbol *LandingPadLabel = Context.CreateTempSymbol();
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
- LP.LandingPadLabel = LandingPadLabel;
+ LP.LandingPadLabel = LandingPadLabel;
return LandingPadLabel;
}
/// addPersonality - Provide the personality function for the exception
/// information.
void MachineModuleInfo::addPersonality(MachineBasicBlock *LandingPad,
- Function *Personality) {
+ const Function *Personality) {
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
LP.Personality = Personality;
for (unsigned i = 0; i < Personalities.size(); ++i)
if (Personalities[i] == Personality)
return;
-
- Personalities.push_back(Personality);
+
+ // If this is the first personality we're adding go
+ // ahead and add it at the beginning.
+ if (!Personalities[0])
+ Personalities[0] = Personality;
+ else
+ Personalities.push_back(Personality);
+}
+
+void MachineModuleInfo::addWinEHState(MachineBasicBlock *LandingPad,
+ int State) {
+ LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
+ LP.WinEHState = State;
}
/// addCatchTypeInfo - Provide the catch typeinfo for a landing pad.
///
-void MachineModuleInfo::addCatchTypeInfo(MachineBasicBlock *LandingPad,
- std::vector<GlobalVariable *> &TyInfo) {
+void MachineModuleInfo::
+addCatchTypeInfo(MachineBasicBlock *LandingPad,
+ ArrayRef<const GlobalValue *> TyInfo) {
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
for (unsigned N = TyInfo.size(); N; --N)
LP.TypeIds.push_back(getTypeIDFor(TyInfo[N - 1]));
/// addFilterTypeInfo - Provide the filter typeinfo for a landing pad.
///
-void MachineModuleInfo::addFilterTypeInfo(MachineBasicBlock *LandingPad,
- std::vector<GlobalVariable *> &TyInfo) {
+void MachineModuleInfo::
+addFilterTypeInfo(MachineBasicBlock *LandingPad,
+ ArrayRef<const GlobalValue *> TyInfo) {
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
std::vector<unsigned> IdsInFilter(TyInfo.size());
for (unsigned I = 0, E = TyInfo.size(); I != E; ++I)
LP.TypeIds.push_back(0);
}
+void MachineModuleInfo::addSEHCatchHandler(MachineBasicBlock *LandingPad,
+ const Function *Filter,
+ const BlockAddress *RecoverBA) {
+ LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
+ SEHHandler Handler;
+ Handler.FilterOrFinally = Filter;
+ Handler.RecoverBA = RecoverBA;
+ LP.SEHHandlers.push_back(Handler);
+}
+
+void MachineModuleInfo::addSEHCleanupHandler(MachineBasicBlock *LandingPad,
+ const Function *Cleanup) {
+ LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
+ SEHHandler Handler;
+ Handler.FilterOrFinally = Cleanup;
+ Handler.RecoverBA = nullptr;
+ LP.SEHHandlers.push_back(Handler);
+}
+
/// TidyLandingPads - Remap landing pad labels and remove any deleted landing
/// pads.
-void MachineModuleInfo::TidyLandingPads() {
+void MachineModuleInfo::TidyLandingPads(DenseMap<MCSymbol*, uintptr_t> *LPMap) {
for (unsigned i = 0; i != LandingPads.size(); ) {
LandingPadInfo &LandingPad = LandingPads[i];
- LandingPad.LandingPadLabel = MappedLabel(LandingPad.LandingPadLabel);
+ if (LandingPad.LandingPadLabel &&
+ !LandingPad.LandingPadLabel->isDefined() &&
+ (!LPMap || (*LPMap)[LandingPad.LandingPadLabel] == 0))
+ LandingPad.LandingPadLabel = nullptr;
// Special case: we *should* emit LPs with null LP MBB. This indicates
// "nounwind" case.
continue;
}
- for (unsigned j=0; j != LandingPads[i].BeginLabels.size(); ) {
- unsigned BeginLabel = MappedLabel(LandingPad.BeginLabels[j]);
- unsigned EndLabel = MappedLabel(LandingPad.EndLabels[j]);
-
- if (!BeginLabel || !EndLabel) {
- LandingPad.BeginLabels.erase(LandingPad.BeginLabels.begin() + j);
- LandingPad.EndLabels.erase(LandingPad.EndLabels.begin() + j);
- continue;
- }
-
- LandingPad.BeginLabels[j] = BeginLabel;
- LandingPad.EndLabels[j] = EndLabel;
- ++j;
+ for (unsigned j = 0, e = LandingPads[i].BeginLabels.size(); j != e; ++j) {
+ MCSymbol *BeginLabel = LandingPad.BeginLabels[j];
+ MCSymbol *EndLabel = LandingPad.EndLabels[j];
+ if ((BeginLabel->isDefined() ||
+ (LPMap && (*LPMap)[BeginLabel] != 0)) &&
+ (EndLabel->isDefined() ||
+ (LPMap && (*LPMap)[EndLabel] != 0))) continue;
+
+ LandingPad.BeginLabels.erase(LandingPad.BeginLabels.begin() + j);
+ LandingPad.EndLabels.erase(LandingPad.EndLabels.begin() + j);
+ --j, --e;
}
// Remove landing pads with no try-ranges.
if (!LandingPad.LandingPadBlock ||
(LandingPad.TypeIds.size() == 1 && !LandingPad.TypeIds[0]))
LandingPad.TypeIds.clear();
-
++i;
}
}
-/// getTypeIDFor - Return the type id for the specified typeinfo. This is
+/// setCallSiteLandingPad - Map the landing pad's EH symbol to the call site
+/// indexes.
+void MachineModuleInfo::setCallSiteLandingPad(MCSymbol *Sym,
+ ArrayRef<unsigned> Sites) {
+ LPadToCallSiteMap[Sym].append(Sites.begin(), Sites.end());
+}
+
+/// getTypeIDFor - Return the type id for the specified typeinfo. This is
/// function wide.
-unsigned MachineModuleInfo::getTypeIDFor(GlobalVariable *TI) {
+unsigned MachineModuleInfo::getTypeIDFor(const GlobalValue *TI) {
for (unsigned i = 0, N = TypeInfos.size(); i != N; ++i)
if (TypeInfos[i] == TI) return i + 1;
// Add the new filter.
int FilterID = -(1 + FilterIds.size());
FilterIds.reserve(FilterIds.size() + TyIds.size() + 1);
- for (unsigned I = 0, N = TyIds.size(); I != N; ++I)
- FilterIds.push_back(TyIds[I]);
+ FilterIds.insert(FilterIds.end(), TyIds.begin(), TyIds.end());
FilterEnds.push_back(FilterIds.size());
FilterIds.push_back(0); // terminator
return FilterID;
}
/// getPersonality - Return the personality function for the current function.
-Function *MachineModuleInfo::getPersonality() const {
- // FIXME: Until PR1414 will be fixed, we're using 1 personality function per
- // function
- return !LandingPads.empty() ? LandingPads[0].Personality : NULL;
+const Function *MachineModuleInfo::getPersonality() const {
+ for (const LandingPadInfo &LPI : LandingPads)
+ if (LPI.Personality)
+ return LPI.Personality;
+ return nullptr;
+}
+
+EHPersonality MachineModuleInfo::getPersonalityType() {
+ if (PersonalityTypeCache == EHPersonality::Unknown) {
+ if (const Function *F = getPersonality())
+ PersonalityTypeCache = classifyEHPersonality(F);
+ }
+ return PersonalityTypeCache;
}
/// getPersonalityIndex - Return unique index for current personality
-/// function. NULL personality function should always get zero index.
+/// function. NULL/first personality function should always get zero index.
unsigned MachineModuleInfo::getPersonalityIndex() const {
- const Function* Personality = NULL;
-
+ const Function* Personality = nullptr;
+
// Scan landing pads. If there is at least one non-NULL personality - use it.
- for (unsigned i = 0; i != LandingPads.size(); ++i)
+ for (unsigned i = 0, e = LandingPads.size(); i != e; ++i)
if (LandingPads[i].Personality) {
Personality = LandingPads[i].Personality;
break;
}
-
- for (unsigned i = 0; i < Personalities.size(); ++i) {
+
+ for (unsigned i = 0, e = Personalities.size(); i < e; ++i) {
if (Personalities[i] == Personality)
return i;
}
- // This should never happen
- assert(0 && "Personality function should be set!");
+ // This will happen if the current personality function is
+ // in the zero index.
return 0;
}
-//===----------------------------------------------------------------------===//
-/// DebugLabelFolding pass - This pass prunes out redundant labels. This allows
-/// a info consumer to determine if the range of two labels is empty, by seeing
-/// if the labels map to the same reduced label.
-
-namespace llvm {
-
-struct DebugLabelFolder : public MachineFunctionPass {
- static char ID;
- DebugLabelFolder() : MachineFunctionPass(&ID) {}
-
- virtual void getAnalysisUsage(AnalysisUsage &AU) const {
- AU.addPreservedID(MachineLoopInfoID);
- AU.addPreservedID(MachineDominatorsID);
- MachineFunctionPass::getAnalysisUsage(AU);
- }
-
- virtual bool runOnMachineFunction(MachineFunction &MF);
- virtual const char *getPassName() const { return "Label Folder"; }
-};
-
-char DebugLabelFolder::ID = 0;
-
-bool DebugLabelFolder::runOnMachineFunction(MachineFunction &MF) {
- // Get machine module info.
- MachineModuleInfo *MMI = getAnalysisToUpdate<MachineModuleInfo>();
- if (!MMI) return false;
-
- // Track if change is made.
- bool MadeChange = false;
- // No prior label to begin.
- unsigned PriorLabel = 0;
-
- // Iterate through basic blocks.
- for (MachineFunction::iterator BB = MF.begin(), E = MF.end();
- BB != E; ++BB) {
- // Iterate through instructions.
- for (MachineBasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; ) {
- // Is it a label.
- if (I->isDebugLabel()) {
- // The label ID # is always operand #0, an immediate.
- unsigned NextLabel = I->getOperand(0).getImm();
-
- // If there was an immediate prior label.
- if (PriorLabel) {
- // Remap the current label to prior label.
- MMI->RemapLabel(NextLabel, PriorLabel);
- // Delete the current label.
- I = BB->erase(I);
- // Indicate a change has been made.
- MadeChange = true;
- continue;
- } else {
- // Start a new round.
- PriorLabel = NextLabel;
- }
- } else {
- // No consecutive labels.
- PriorLabel = 0;
- }
-
- ++I;
- }
- }
-
- return MadeChange;
+const Function *MachineModuleInfo::getWinEHParent(const Function *F) const {
+ StringRef WinEHParentName =
+ F->getFnAttribute("wineh-parent").getValueAsString();
+ if (WinEHParentName.empty() || WinEHParentName == F->getName())
+ return F;
+ return F->getParent()->getFunction(WinEHParentName);
}
-FunctionPass *createDebugLabelFoldingPass() { return new DebugLabelFolder(); }
-
+WinEHFuncInfo &MachineModuleInfo::getWinEHFuncInfo(const Function *F) {
+ auto &Ptr = FuncInfoMap[getWinEHParent(F)];
+ if (!Ptr)
+ Ptr.reset(new WinEHFuncInfo);
+ return *Ptr;
}
-
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