-//===-- Method.cpp - Implement the Method class ------------------*- C++ -*--=//
+//===-- Function.cpp - Implement the Global object classes ----------------===//
//
-// This file implements the Method & GlobalVariable classes for the VMCore
+// 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 & GlobalVariable classes for the VMCore
// library.
//
//===----------------------------------------------------------------------===//
-#include "llvm/ValueHolderImpl.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/SymbolTable.h"
#include "llvm/Module.h"
-#include "llvm/Method.h"
-#include "llvm/GlobalVariable.h"
-#include "llvm/BasicBlock.h"
-#include "llvm/iOther.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/IntrinsicInst.h"
+#include "llvm/Support/LeakDetector.h"
+#include "SymbolTableListTraitsImpl.h"
+#include "llvm/ADT/StringExtras.h"
+using namespace llvm;
+
+BasicBlock *ilist_traits<BasicBlock>::createSentinel() {
+ BasicBlock *Ret = new BasicBlock();
+ // This should not be garbage monitored.
+ LeakDetector::removeGarbageObject(Ret);
+ return Ret;
+}
+
+iplist<BasicBlock> &ilist_traits<BasicBlock>::getList(Function *F) {
+ return F->getBasicBlockList();
+}
+
+Argument *ilist_traits<Argument>::createSentinel() {
+ Argument *Ret = new Argument(Type::IntTy);
+ // This should not be garbage monitored.
+ LeakDetector::removeGarbageObject(Ret);
+ return Ret;
+}
+
+iplist<Argument> &ilist_traits<Argument>::getList(Function *F) {
+ return F->getArgumentList();
+}
+
+// Explicit instantiations of SymbolTableListTraits since some of the methods
+// are not in the public header file...
+template class SymbolTableListTraits<Argument, Function, Function>;
+template class SymbolTableListTraits<BasicBlock, Function, Function>;
//===----------------------------------------------------------------------===//
-// Method Implementation
+// Argument Implementation
//===----------------------------------------------------------------------===//
+Argument::Argument(const Type *Ty, const std::string &Name, Function *Par)
+ : Value(Ty, Value::ArgumentVal, Name) {
+ Parent = 0;
-// Instantiate Templates - This ugliness is the price we have to pay
-// for having a ValueHolderImpl.h file seperate from ValueHolder.h! :(
-//
-template class ValueHolder<MethodArgument, Method, Method>;
-template class ValueHolder<BasicBlock , Method, Method>;
+ // Make sure that we get added to a function
+ LeakDetector::addGarbageObject(this);
-Method::Method(const MethodType *Ty, const string &name)
- : GlobalValue(PointerType::get(Ty), Value::MethodVal, name),
- SymTabValue(this), BasicBlocks(this), ArgumentList(this, this) {
- assert(::isa<MethodType>(Ty) && "Method signature must be of method type!");
+ if (Par)
+ Par->getArgumentList().push_back(this);
}
-Method::~Method() {
- dropAllReferences(); // After this it is safe to delete instructions.
+void Argument::setParent(Function *parent) {
+ if (getParent())
+ LeakDetector::addGarbageObject(this);
+ Parent = parent;
+ if (getParent())
+ LeakDetector::removeGarbageObject(this);
+}
- // TODO: Should remove from the end, not the beginning of vector!
- iterator BI = begin();
- while ((BI = begin()) != end())
- delete BasicBlocks.remove(BI);
+//===----------------------------------------------------------------------===//
+// Function Implementation
+//===----------------------------------------------------------------------===//
+
+Function::Function(const FunctionType *Ty, LinkageTypes Linkage,
+ const std::string &name, Module *ParentModule)
+ : GlobalValue(PointerType::get(Ty), Value::FunctionVal, 0, 0, Linkage, name) {
+ CallingConvention = 0;
+ BasicBlocks.setItemParent(this);
+ BasicBlocks.setParent(this);
+ ArgumentList.setItemParent(this);
+ ArgumentList.setParent(this);
+ SymTab = new SymbolTable();
+
+ assert((getReturnType()->isFirstClassType() ||getReturnType() == Type::VoidTy)
+ && "LLVM functions cannot return aggregate values!");
+
+ // 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)));
+ }
+
+ // Make sure that we get added to a function
+ LeakDetector::addGarbageObject(this);
+
+ if (ParentModule)
+ ParentModule->getFunctionList().push_back(this);
+}
+
+Function::~Function() {
+ dropAllReferences(); // After this it is safe to delete instructions.
// Delete all of the method arguments and unlink from symbol table...
- ArgumentList.delete_all();
+ ArgumentList.clear();
ArgumentList.setParent(0);
+ delete SymTab;
}
-// Specialize setName to take care of symbol table majik
-void Method::setName(const 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->getSymbolTableSure()->insert(this);
+void Function::setParent(Module *parent) {
+ if (getParent())
+ LeakDetector::addGarbageObject(this);
+ Parent = parent;
+ if (getParent())
+ LeakDetector::removeGarbageObject(this);
}
-void Method::setParent(Module *parent) {
- Parent = parent;
+const FunctionType *Function::getFunctionType() const {
+ return cast<FunctionType>(getType()->getElementType());
+}
+
+bool Function::isVarArg() const {
+ return getFunctionType()->isVarArg();
+}
- // Relink symbol tables together...
- setParentSymTab(Parent ? Parent->getSymbolTableSure() : 0);
+const Type *Function::getReturnType() const {
+ return getFunctionType()->getReturnType();
}
-const MethodType *Method::getMethodType() const {
- return cast<MethodType>(cast<PointerType>(getType())->getValueType());
+void Function::removeFromParent() {
+ getParent()->getFunctionList().remove(this);
}
-const Type *Method::getReturnType() const {
- return getMethodType()->getReturnType();
+void Function::eraseFromParent() {
+ getParent()->getFunctionList().erase(this);
}
+
+/// renameLocalSymbols - This method goes through the Function's symbol table
+/// and renames any symbols that conflict with symbols at global scope. This is
+/// required before printing out to a textual form, to ensure that there is no
+/// ambiguity when parsing.
+void Function::renameLocalSymbols() {
+ SymbolTable &LST = getSymbolTable(); // Local Symtab
+ SymbolTable &GST = getParent()->getSymbolTable(); // Global Symtab
+
+ for (SymbolTable::plane_iterator LPI = LST.plane_begin(), E = LST.plane_end();
+ LPI != E; ++LPI)
+ // All global symbols are of pointer type, ignore any non-pointer planes.
+ if (const PointerType *CurTy = dyn_cast<PointerType>(LPI->first)) {
+ // Only check if the global plane has any symbols of this type.
+ SymbolTable::plane_iterator GPI = GST.find(LPI->first);
+ if (GPI != GST.plane_end()) {
+ SymbolTable::ValueMap &LVM = LPI->second;
+ const SymbolTable::ValueMap &GVM = GPI->second;
+
+ // Loop over all local symbols, renaming those that are in the global
+ // symbol table already.
+ for (SymbolTable::value_iterator VI = LVM.begin(), E = LVM.end();
+ VI != E;) {
+ Value *V = VI->second;
+ const std::string &Name = VI->first;
+ ++VI;
+ if (GVM.count(Name)) {
+ static unsigned UniqueNum = 0;
+ // Find a name that does not conflict!
+ while (GVM.count(Name + "_" + utostr(++UniqueNum)) ||
+ LVM.count(Name + "_" + utostr(UniqueNum)))
+ /* scan for UniqueNum that works */;
+ V->setName(Name + "_" + utostr(UniqueNum));
+ }
+ }
+ }
+ }
+}
+
+
// 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 Method::dropAllReferences() {
- for_each(begin(), end(), std::mem_fun(&BasicBlock::dropAllReferences));
+void Function::dropAllReferences() {
+ for (iterator I = begin(), E = end(); I != E; ++I)
+ I->dropAllReferences();
+ BasicBlocks.clear(); // Delete all basic blocks...
}
-//===----------------------------------------------------------------------===//
-// GlobalVariable Implementation
-//===----------------------------------------------------------------------===//
+/// 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() const {
+ const std::string& Name = this->getName();
+ if (Name.size() < 5 || Name[4] != '.' || Name[0] != 'l' || Name[1] != 'l'
+ || Name[2] != 'v' || Name[3] != 'm')
+ return 0; // All intrinsics start with 'llvm.'
+
+ assert(Name.size() != 5 && "'llvm.' is an invalid intrinsic name!");
+
+#define GET_FUNCTION_RECOGNIZER
+#include "llvm/Intrinsics.gen"
+#undef GET_FUNCTION_RECOGNIZER
+ return 0;
+}
-GlobalVariable::GlobalVariable(const Type *Ty, bool isConstant,
- ConstPoolVal *Initializer = 0,
- const string &Name = "")
- : GlobalValue(PointerType::get(Ty), Value::GlobalVariableVal, Name),
- Constant(isConstant) {
- if (Initializer) Operands.push_back(Use((Value*)Initializer, this));
+const char *Intrinsic::getName(ID id) {
+ 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
+ };
+ return Table[id];
}
-// Specialize setName to take care of symbol table majik
-void GlobalVariable::setName(const 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->getSymbolTableSure()->insert(this);
+Value *IntrinsicInst::StripPointerCasts(Value *Ptr) {
+ if (ConstantExpr *CE = dyn_cast<ConstantExpr>(Ptr)) {
+ if (CE->getOpcode() == Instruction::Cast) {
+ 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 (CastInst *CI = dyn_cast<CastInst>(Ptr)) {
+ if (isa<PointerType>(CI->getOperand(0)->getType()))
+ return StripPointerCasts(CI->getOperand(0));
+ } else if (GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(Ptr)) {
+ for (unsigned i = 1, e = GEP->getNumOperands(); i != e; ++i)
+ if (!isa<Constant>(GEP->getOperand(i)) ||
+ !cast<Constant>(GEP->getOperand(i))->isNullValue())
+ return Ptr;
+ return StripPointerCasts(GEP->getOperand(0));
+ }
+ return Ptr;
}
+
+// vim: sw=2 ai
projects / oota-llvm.git / blobdiff