-//===-- Function.cpp - Implement the Global object classes -------*- C++ -*--=//
+//===-- Function.cpp - Implement the Global object classes ----------------===//
//
-// This file implements the Function & GlobalVariable classes for the VMCore
-// library.
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the Function class for the VMCore library.
//
//===----------------------------------------------------------------------===//
#include "llvm/Module.h"
#include "llvm/DerivedTypes.h"
-#include "llvm/iOther.h"
-#include "Support/LeakDetector.h"
+#include "llvm/ParameterAttributes.h"
+#include "llvm/IntrinsicInst.h"
+#include "llvm/CodeGen/ValueTypes.h"
+#include "llvm/Support/LeakDetector.h"
+#include "llvm/Support/ManagedStatic.h"
#include "SymbolTableListTraitsImpl.h"
+#include "llvm/ADT/StringExtras.h"
+using namespace llvm;
-BasicBlock *ilist_traits<BasicBlock>::createNode() {
+BasicBlock *ilist_traits<BasicBlock>::createSentinel() {
BasicBlock *Ret = new BasicBlock();
// This should not be garbage monitored.
LeakDetector::removeGarbageObject(Ret);
return F->getBasicBlockList();
}
-Argument *ilist_traits<Argument>::createNode() {
- Argument *Ret = new Argument(Type::IntTy);
+Argument *ilist_traits<Argument>::createSentinel() {
+ Argument *Ret = new Argument(Type::Int32Ty);
// This should not be garbage monitored.
LeakDetector::removeGarbageObject(Ret);
return Ret;
// Explicit instantiations of SymbolTableListTraits since some of the methods
// are not in the public header file...
-template SymbolTableListTraits<Argument, Function, Function>;
-template SymbolTableListTraits<BasicBlock, Function, Function>;
+template class SymbolTableListTraits<Argument, Function>;
+template class SymbolTableListTraits<BasicBlock, Function>;
//===----------------------------------------------------------------------===//
// Argument Implementation
//===----------------------------------------------------------------------===//
-Argument::Argument(const Type *Ty, const std::string &Name, Function *Par)
- : Value(Ty, Value::ArgumentVal, Name) {
+Argument::Argument(const Type *Ty, const std::string &Name, Function *Par)
+ : Value(Ty, Value::ArgumentVal) {
Parent = 0;
// Make sure that we get added to a function
if (Par)
Par->getArgumentList().push_back(this);
-}
-
-
-// Specialize setName to take care of symbol table majik
-void Argument::setName(const std::string &name, SymbolTable *ST) {
- Function *P;
- assert((ST == 0 || (!getParent() || ST == &getParent()->getSymbolTable())) &&
- "Invalid symtab argument!");
- if ((P = getParent()) && hasName()) P->getSymbolTable().remove(this);
- Value::setName(name);
- if (P && hasName()) P->getSymbolTable().insert(this);
+ setName(Name);
}
void Argument::setParent(Function *parent) {
LeakDetector::removeGarbageObject(this);
}
+//===----------------------------------------------------------------------===//
+// ParamAttrsList Implementation
+//===----------------------------------------------------------------------===//
+
+uint16_t
+ParamAttrsList::getParamAttrs(uint16_t Index) const {
+ unsigned limit = attrs.size();
+ for (unsigned i = 0; i < limit; ++i)
+ if (attrs[i].index == Index)
+ return attrs[i].attrs;
+ return ParamAttr::None;
+}
+
+
+std::string
+ParamAttrsList::getParamAttrsText(uint16_t Attrs) {
+ std::string Result;
+ if (Attrs & ParamAttr::ZExt)
+ Result += "zeroext ";
+ if (Attrs & ParamAttr::SExt)
+ Result += "signext ";
+ if (Attrs & ParamAttr::NoReturn)
+ Result += "noreturn ";
+ if (Attrs & ParamAttr::NoUnwind)
+ Result += "nounwind ";
+ if (Attrs & ParamAttr::InReg)
+ Result += "inreg ";
+ if (Attrs & ParamAttr::NoAlias)
+ Result += "noalias ";
+ if (Attrs & ParamAttr::StructRet)
+ Result += "sret ";
+ if (Attrs & ParamAttr::ByVal)
+ Result += "byval ";
+ if (Attrs & ParamAttr::Nest)
+ Result += "nest ";
+ return Result;
+}
+
+void
+ParamAttrsList::Profile(FoldingSetNodeID &ID) const {
+ for (unsigned i = 0; i < attrs.size(); ++i) {
+ unsigned val = attrs[i].attrs << 16 | attrs[i].index;
+ ID.AddInteger(val);
+ }
+}
+
+static ManagedStatic<FoldingSet<ParamAttrsList> > ParamAttrsLists;
+
+ParamAttrsList *
+ParamAttrsList::get(const ParamAttrsVector &attrVec) {
+ assert(!attrVec.empty() && "Illegal to create empty ParamAttrsList");
+#ifndef NDEBUG
+ for (unsigned i = 1, e = attrVec.size(); i < e; ++i)
+ assert(attrVec[i-1].index < attrVec[i].index && "Misordered ParamAttrsList!");
+#endif
+ ParamAttrsList key(attrVec);
+ FoldingSetNodeID ID;
+ key.Profile(ID);
+ void *InsertPos;
+ ParamAttrsList* PAL = ParamAttrsLists->FindNodeOrInsertPos(ID, InsertPos);
+ if (!PAL) {
+ PAL = new ParamAttrsList(attrVec);
+ ParamAttrsLists->InsertNode(PAL, InsertPos);
+ }
+ return PAL;
+}
+
+ParamAttrsList::~ParamAttrsList() {
+ ParamAttrsLists->RemoveNode(this);
+}
//===----------------------------------------------------------------------===//
// Function Implementation
//===----------------------------------------------------------------------===//
-Function::Function(const FunctionType *Ty, bool isInternal,
+Function::Function(const FunctionType *Ty, LinkageTypes Linkage,
const std::string &name, Module *ParentModule)
- : GlobalValue(PointerType::get(Ty), Value::FunctionVal, isInternal, name) {
- BasicBlocks.setItemParent(this);
- BasicBlocks.setParent(this);
- ArgumentList.setItemParent(this);
- ArgumentList.setParent(this);
- SymTab = new SymbolTable();
+ : GlobalValue(PointerType::get(Ty), Value::FunctionVal, 0, 0, Linkage, name) {
+ ParamAttrs = 0;
+ SymTab = new ValueSymbolTable();
- // Create the arguments vector, all arguments start out unnamed.
- for (unsigned i = 0, e = Ty->getNumParams(); i != e; ++i) {
- assert(Ty->getParamType(i) != Type::VoidTy &&
- "Cannot have void typed arguments!");
- ArgumentList.push_back(new Argument(Ty->getParamType(i)));
- }
+ assert((getReturnType()->isFirstClassType() ||getReturnType() == Type::VoidTy)
+ && "LLVM functions cannot return aggregate values!");
+ // If the function has arguments, mark them as lazily built.
+ if (Ty->getNumParams())
+ SubclassData = 1; // Set the "has lazy arguments" bit.
+
// Make sure that we get added to a function
LeakDetector::addGarbageObject(this);
Function::~Function() {
dropAllReferences(); // After this it is safe to delete instructions.
- BasicBlocks.clear(); // Delete all basic blocks...
-
// Delete all of the method arguments and unlink from symbol table...
ArgumentList.clear();
- ArgumentList.setParent(0);
delete SymTab;
+
+ // Drop our reference to the parameter attributes, if any.
+ if (ParamAttrs)
+ ParamAttrs->dropRef();
}
-// Specialize setName to take care of symbol table majik
-void Function::setName(const std::string &name, SymbolTable *ST) {
- Module *P;
- assert((ST == 0 || (!getParent() || ST == &getParent()->getSymbolTable())) &&
- "Invalid symtab argument!");
- if ((P = getParent()) && hasName()) P->getSymbolTable().remove(this);
- Value::setName(name);
- if (P && getName() != "") P->getSymbolTable().insert(this);
+void Function::BuildLazyArguments() const {
+ // Create the arguments vector, all arguments start out unnamed.
+ const FunctionType *FT = getFunctionType();
+ for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) {
+ assert(FT->getParamType(i) != Type::VoidTy &&
+ "Cannot have void typed arguments!");
+ ArgumentList.push_back(new Argument(FT->getParamType(i)));
+ }
+
+ // Clear the lazy arguments bit.
+ const_cast<Function*>(this)->SubclassData &= ~1;
+}
+
+size_t Function::arg_size() const {
+ return getFunctionType()->getNumParams();
+}
+bool Function::arg_empty() const {
+ return getFunctionType()->getNumParams() == 0;
}
void Function::setParent(Module *parent) {
LeakDetector::removeGarbageObject(this);
}
+void Function::setParamAttrs(ParamAttrsList *attrs) {
+ if (ParamAttrs)
+ ParamAttrs->dropRef();
+
+ if (attrs)
+ attrs->addRef();
+
+ ParamAttrs = attrs;
+}
+
const FunctionType *Function::getFunctionType() const {
return cast<FunctionType>(getType()->getElementType());
}
-const Type *Function::getReturnType() const {
+bool Function::isVarArg() const {
+ return getFunctionType()->isVarArg();
+}
+
+const Type *Function::getReturnType() const {
return getFunctionType()->getReturnType();
}
+void Function::removeFromParent() {
+ getParent()->getFunctionList().remove(this);
+}
+
+void Function::eraseFromParent() {
+ getParent()->getFunctionList().erase(this);
+}
+
// dropAllReferences() - This function causes all the subinstructions to "let
// go" of all references that they are maintaining. This allows one to
// 'delete' a whole class at a time, even though there may be circular
// references... first all references are dropped, and all use counts go to
-// zero. Then everything is delete'd for real. Note that no operations are
-// valid on an object that has "dropped all references", except operator
+// zero. Then everything is deleted for real. Note that no operations are
+// valid on an object that has "dropped all references", except operator
// delete.
//
void Function::dropAllReferences() {
for (iterator I = begin(), E = end(); I != E; ++I)
I->dropAllReferences();
+ BasicBlocks.clear(); // Delete all basic blocks...
}
-//===----------------------------------------------------------------------===//
-// GlobalVariable Implementation
-//===----------------------------------------------------------------------===//
-
-GlobalVariable::GlobalVariable(const Type *Ty, bool constant, bool isIntern,
- Constant *Initializer,
- const std::string &Name, Module *ParentModule)
- : GlobalValue(PointerType::get(Ty), Value::GlobalVariableVal, isIntern, Name),
- isConstantGlobal(constant) {
- if (Initializer) Operands.push_back(Use((Value*)Initializer, this));
+/// getIntrinsicID - This method returns the ID number of the specified
+/// function, or Intrinsic::not_intrinsic if the function is not an
+/// intrinsic, or if the pointer is null. This value is always defined to be
+/// zero to allow easy checking for whether a function is intrinsic or not. The
+/// particular intrinsic functions which correspond to this value are defined in
+/// llvm/Intrinsics.h.
+///
+unsigned Function::getIntrinsicID(bool noAssert) const {
+ const ValueName *ValName = this->getValueName();
+ if (!ValName)
+ return 0;
+ unsigned Len = ValName->getKeyLength();
+ const char *Name = ValName->getKeyData();
+
+ if (Len < 5 || Name[4] != '.' || Name[0] != 'l' || Name[1] != 'l'
+ || Name[2] != 'v' || Name[3] != 'm')
+ return 0; // All intrinsics start with 'llvm.'
+
+ assert((Len != 5 || noAssert) && "'llvm.' is an invalid intrinsic name!");
+
+#define GET_FUNCTION_RECOGNIZER
+#include "llvm/Intrinsics.gen"
+#undef GET_FUNCTION_RECOGNIZER
+ assert(noAssert && "Invalid LLVM intrinsic name");
+ return 0;
+}
- LeakDetector::addGarbageObject(this);
+std::string Intrinsic::getName(ID id, const Type **Tys, unsigned numTys) {
+ assert(id < num_intrinsics && "Invalid intrinsic ID!");
+ const char * const Table[] = {
+ "not_intrinsic",
+#define GET_INTRINSIC_NAME_TABLE
+#include "llvm/Intrinsics.gen"
+#undef GET_INTRINSIC_NAME_TABLE
+ };
+ if (numTys == 0)
+ return Table[id];
+ std::string Result(Table[id]);
+ for (unsigned i = 0; i < numTys; ++i)
+ if (Tys[i])
+ Result += "." + MVT::getValueTypeString(MVT::getValueType(Tys[i]));
+ return Result;
+}
- if (ParentModule)
- ParentModule->getGlobalList().push_back(this);
+const FunctionType *Intrinsic::getType(ID id, const Type **Tys,
+ unsigned numTys) {
+ const Type *ResultTy = NULL;
+ std::vector<const Type*> ArgTys;
+ bool IsVarArg = false;
+
+#define GET_INTRINSIC_GENERATOR
+#include "llvm/Intrinsics.gen"
+#undef GET_INTRINSIC_GENERATOR
+
+ return FunctionType::get(ResultTy, ArgTys, IsVarArg);
}
-void GlobalVariable::setParent(Module *parent) {
- if (getParent())
- LeakDetector::addGarbageObject(this);
- Parent = parent;
- if (getParent())
- LeakDetector::removeGarbageObject(this);
+Function *Intrinsic::getDeclaration(Module *M, ID id, const Type **Tys,
+ unsigned numTys) {
+// There can never be multiple globals with the same name of different types,
+// because intrinsics must be a specific type.
+ return cast<Function>(M->getOrInsertFunction(getName(id, Tys, numTys),
+ getType(id, Tys, numTys)));
}
-// Specialize setName to take care of symbol table majik
-void GlobalVariable::setName(const std::string &name, SymbolTable *ST) {
- Module *P;
- assert((ST == 0 || (!getParent() || ST == &getParent()->getSymbolTable())) &&
- "Invalid symtab argument!");
- if ((P = getParent()) && hasName()) P->getSymbolTable().remove(this);
- Value::setName(name);
- if (P && getName() != "") P->getSymbolTable().insert(this);
+Value *IntrinsicInst::StripPointerCasts(Value *Ptr) {
+ if (ConstantExpr *CE = dyn_cast<ConstantExpr>(Ptr)) {
+ if (CE->getOpcode() == Instruction::BitCast) {
+ if (isa<PointerType>(CE->getOperand(0)->getType()))
+ return StripPointerCasts(CE->getOperand(0));
+ } else if (CE->getOpcode() == Instruction::GetElementPtr) {
+ for (unsigned i = 1, e = CE->getNumOperands(); i != e; ++i)
+ if (!CE->getOperand(i)->isNullValue())
+ return Ptr;
+ return StripPointerCasts(CE->getOperand(0));
+ }
+ return Ptr;
+ }
+
+ if (BitCastInst *CI = dyn_cast<BitCastInst>(Ptr)) {
+ if (isa<PointerType>(CI->getOperand(0)->getType()))
+ return StripPointerCasts(CI->getOperand(0));
+ } else if (GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(Ptr)) {
+ if (GEP->hasAllZeroIndices())
+ return StripPointerCasts(GEP->getOperand(0));
+ }
+ return Ptr;
}
+
+// vim: sw=2 ai
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