-//===-- Function.cpp - Implement the Global object classes -------*- C++ -*--=//
+//===-- Function.cpp - Implement the Global object classes ----------------===//
+//
+// 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/Function.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>;
+
+//===----------------------------------------------------------------------===//
+// Argument Implementation
+//===----------------------------------------------------------------------===//
+
+Argument::Argument(const Type *Ty, const std::string &Name, Function *Par)
+ : Value(Ty, Value::ArgumentVal, Name) {
+ Parent = 0;
+
+ // Make sure that we get added to a function
+ LeakDetector::addGarbageObject(this);
+
+ if (Par)
+ Par->getArgumentList().push_back(this);
+}
+
+void Argument::setParent(Function *parent) {
+ if (getParent())
+ LeakDetector::addGarbageObject(this);
+ Parent = parent;
+ if (getParent())
+ LeakDetector::removeGarbageObject(this);
+}
//===----------------------------------------------------------------------===//
// 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) {
+ BasicBlocks.setItemParent(this);
+ BasicBlocks.setParent(this);
+ ArgumentList.setItemParent(this);
+ ArgumentList.setParent(this);
+ SymTab = new SymbolTable();
-// Instantiate Templates - This ugliness is the price we have to pay
-// for having a ValueHolderImpl.h file seperate from ValueHolder.h! :(
-//
-template class ValueHolder<FunctionArgument, Function, Function>;
-template class ValueHolder<BasicBlock , Function, Function>;
+ 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);
-Function::Function(const FunctionType *Ty, bool isInternal,
- const std::string &name)
- : GlobalValue(PointerType::get(Ty), Value::FunctionVal, isInternal, name),
- SymTabValue(this), BasicBlocks(this), ArgumentList(this, this) {
+ if (ParentModule)
+ ParentModule->getFunctionList().push_back(this);
}
Function::~Function() {
dropAllReferences(); // After this it is safe to delete instructions.
- // TODO: Should remove from the end, not the beginning of vector!
- iterator BI = begin();
- while ((BI = begin()) != end())
- delete BasicBlocks.remove(BI);
-
// Delete all of the method arguments and unlink from symbol table...
- ArgumentList.delete_all();
+ ArgumentList.clear();
ArgumentList.setParent(0);
-}
-
-// 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->getSymbolTableSure()->insert(this);
+ delete SymTab;
}
void Function::setParent(Module *parent) {
+ if (getParent())
+ LeakDetector::addGarbageObject(this);
Parent = parent;
-
- // Relink symbol tables together...
- setParentSymTab(Parent ? Parent->getSymbolTableSure() : 0);
+ if (getParent())
+ LeakDetector::removeGarbageObject(this);
}
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);
+}
+
+
+/// 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 Function::dropAllReferences() {
- for_each(begin(), end(), std::mem_fun(&BasicBlock::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 {
+ if (getName().size() < 5 || getName()[4] != '.' || getName()[0] != 'l' ||
+ getName()[1] != 'l' || getName()[2] != 'v' || getName()[3] != 'm')
+ return 0; // All intrinsics start with 'llvm.'
-GlobalVariable::GlobalVariable(const Type *Ty, bool constant, bool isIntern,
- Constant *Initializer = 0,
- const std::string &Name = "")
- : GlobalValue(PointerType::get(Ty), Value::GlobalVariableVal, isIntern, Name),
- isConstantGlobal(constant) {
- if (Initializer) Operands.push_back(Use((Value*)Initializer, this));
+ assert(getName().size() != 5 && "'llvm.' is an invalid intrinsic name!");
+
+ switch (getName()[5]) {
+ case 'c':
+ if (getName() == "llvm.ctpop") return Intrinsic::ctpop;
+ if (getName() == "llvm.cttz") return Intrinsic::cttz;
+ if (getName() == "llvm.ctlz") return Intrinsic::ctlz;
+ break;
+ case 'd':
+ if (getName() == "llvm.dbg.stoppoint") return Intrinsic::dbg_stoppoint;
+ if (getName() == "llvm.dbg.region.start")return Intrinsic::dbg_region_start;
+ if (getName() == "llvm.dbg.region.end") return Intrinsic::dbg_region_end;
+ if (getName() == "llvm.dbg.func.start") return Intrinsic::dbg_func_start;
+ if (getName() == "llvm.dbg.declare") return Intrinsic::dbg_declare;
+ break;
+ case 'f':
+ if (getName() == "llvm.frameaddress") return Intrinsic::frameaddress;
+ break;
+ case 'g':
+ if (getName() == "llvm.gcwrite") return Intrinsic::gcwrite;
+ if (getName() == "llvm.gcread") return Intrinsic::gcread;
+ if (getName() == "llvm.gcroot") return Intrinsic::gcroot;
+ break;
+ case 'i':
+ if (getName() == "llvm.isunordered") return Intrinsic::isunordered;
+ break;
+ case 'l':
+ if (getName() == "llvm.longjmp") return Intrinsic::longjmp;
+ break;
+ case 'm':
+ if (getName() == "llvm.memcpy") return Intrinsic::memcpy;
+ if (getName() == "llvm.memmove") return Intrinsic::memmove;
+ if (getName() == "llvm.memset") return Intrinsic::memset;
+ break;
+ case 'p':
+ if (getName() == "llvm.prefetch") return Intrinsic::prefetch;
+ if (getName() == "llvm.pcmarker") return Intrinsic::pcmarker;
+ break;
+ case 'r':
+ if (getName() == "llvm.returnaddress") return Intrinsic::returnaddress;
+ if (getName() == "llvm.readport") return Intrinsic::readport;
+ if (getName() == "llvm.readio") return Intrinsic::readio;
+ break;
+ case 's':
+ if (getName() == "llvm.setjmp") return Intrinsic::setjmp;
+ if (getName() == "llvm.sigsetjmp") return Intrinsic::sigsetjmp;
+ if (getName() == "llvm.siglongjmp") return Intrinsic::siglongjmp;
+ if (getName() == "llvm.sqrt") return Intrinsic::sqrt;
+ break;
+ case 'v':
+ if (getName() == "llvm.va_copy") return Intrinsic::vacopy;
+ if (getName() == "llvm.va_end") return Intrinsic::vaend;
+ if (getName() == "llvm.va_start") return Intrinsic::vastart;
+ case 'w':
+ if (getName() == "llvm.writeport") return Intrinsic::writeport;
+ if (getName() == "llvm.writeio") return Intrinsic::writeio;
+ break;
+ }
+ // The "llvm." namespace is reserved!
+ assert(0 && "Unknown LLVM intrinsic function!");
+ return 0;
}
-// 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->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