//
// 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 is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "llvm/Module.h"
#include "llvm/DerivedTypes.h"
#include "llvm/IntrinsicInst.h"
+#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/Support/LeakDetector.h"
+#include "llvm/Support/StringPool.h"
#include "SymbolTableListTraitsImpl.h"
+#include "llvm/ADT/BitVector.h"
+#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringExtras.h"
using namespace llvm;
BasicBlock *ilist_traits<BasicBlock>::createSentinel() {
- BasicBlock *Ret = new BasicBlock();
+ BasicBlock *Ret = BasicBlock::Create();
// 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 class SymbolTableListTraits<Argument, Function, Function>;
-template class SymbolTableListTraits<BasicBlock, Function, Function>;
+template class SymbolTableListTraits<Argument, Function>;
+template class SymbolTableListTraits<BasicBlock, Function>;
//===----------------------------------------------------------------------===//
// Argument Implementation
LeakDetector::removeGarbageObject(this);
}
+/// getArgNo - Return the index of this formal argument in its containing
+/// function. For example in "void foo(int a, float b)" a is 0 and b is 1.
+unsigned Argument::getArgNo() const {
+ const Function *F = getParent();
+ assert(F && "Argument is not in a function");
+
+ Function::const_arg_iterator AI = F->arg_begin();
+ unsigned ArgIdx = 0;
+ for (; &*AI != this; ++AI)
+ ++ArgIdx;
+
+ return ArgIdx;
+}
+
+/// hasByValAttr - Return true if this argument has the byval attribute on it
+/// in its containing function.
+bool Argument::hasByValAttr() const {
+ if (!isa<PointerType>(getType())) return false;
+ return getParent()->paramHasAttr(getArgNo()+1, ParamAttr::ByVal);
+}
+
+/// hasNoAliasAttr - Return true if this argument has the noalias attribute on
+/// it in its containing function.
+bool Argument::hasNoAliasAttr() const {
+ if (!isa<PointerType>(getType())) return false;
+ return getParent()->paramHasAttr(getArgNo()+1, ParamAttr::NoAlias);
+}
+
+/// hasSRetAttr - Return true if this argument has the sret attribute on
+/// it in its containing function.
+bool Argument::hasStructRetAttr() const {
+ if (!isa<PointerType>(getType())) return false;
+ if (this != getParent()->arg_begin())
+ return false; // StructRet param must be first param
+ return getParent()->paramHasAttr(1, ParamAttr::StructRet);
+}
+
+/// addAttr - Add a ParamAttr to an argument
+void Argument::addAttr(ParameterAttributes attr) {
+ getParent()->addParamAttr(getArgNo() + 1, attr);
+}
+
+/// removeAttr - Remove a ParamAttr from an argument
+void Argument::removeAttr(ParameterAttributes attr) {
+ getParent()->removeParamAttr(getArgNo() + 1, attr);
+}
+
+
+//===----------------------------------------------------------------------===//
+// Helper Methods in Function
+//===----------------------------------------------------------------------===//
+
+const FunctionType *Function::getFunctionType() const {
+ return cast<FunctionType>(getType()->getElementType());
+}
+
+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);
+}
+
//===----------------------------------------------------------------------===//
// 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);
+ : GlobalValue(PointerType::getUnqual(Ty),
+ Value::FunctionVal, 0, 0, Linkage, name) {
SymTab = new ValueSymbolTable();
- assert((getReturnType()->isFirstClassType() ||getReturnType() == Type::VoidTy)
+ assert((getReturnType()->isFirstClassType() ||getReturnType() == Type::VoidTy
+ || isa<StructType>(getReturnType()))
&& "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)));
- }
-
+ // 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);
if (ParentModule)
ParentModule->getFunctionList().push_back(this);
+
+ // Ensure intrinsics have the right parameter attributes.
+ if (unsigned IID = getIntrinsicID(true))
+ setParamAttrs(Intrinsic::getParamAttrs(Intrinsic::ID(IID)));
}
Function::~Function() {
// Delete all of the method arguments and unlink from symbol table...
ArgumentList.clear();
- ArgumentList.setParent(0);
delete SymTab;
-}
-void Function::setParent(Module *parent) {
- if (getParent())
- LeakDetector::addGarbageObject(this);
- Parent = parent;
- if (getParent())
- LeakDetector::removeGarbageObject(this);
+ // Remove the function from the on-the-side GC table.
+ clearGC();
}
-const FunctionType *Function::getFunctionType() const {
- return cast<FunctionType>(getType()->getElementType());
-}
-
-bool Function::isVarArg() const {
- return getFunctionType()->isVarArg();
+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;
}
-const Type *Function::getReturnType() const {
- return getFunctionType()->getReturnType();
+size_t Function::arg_size() const {
+ return getFunctionType()->getNumParams();
}
-
-void Function::removeFromParent() {
- getParent()->getFunctionList().remove(this);
+bool Function::arg_empty() const {
+ return getFunctionType()->getNumParams() == 0;
}
-void Function::eraseFromParent() {
- getParent()->getFunctionList().erase(this);
+void Function::setParent(Module *parent) {
+ if (getParent())
+ LeakDetector::addGarbageObject(this);
+ Parent = parent;
+ if (getParent())
+ LeakDetector::removeGarbageObject(this);
}
// dropAllReferences() - This function causes all the subinstructions to "let
BasicBlocks.clear(); // Delete all basic blocks...
}
+void Function::addParamAttr(unsigned i, ParameterAttributes attr) {
+ PAListPtr PAL = getParamAttrs();
+ PAL = PAL.addAttr(i, attr);
+ setParamAttrs(PAL);
+}
+
+void Function::removeParamAttr(unsigned i, ParameterAttributes attr) {
+ PAListPtr PAL = getParamAttrs();
+ PAL = PAL.removeAttr(i, attr);
+ setParamAttrs(PAL);
+}
+
+// Maintain the GC name for each function in an on-the-side table. This saves
+// allocating an additional word in Function for programs which do not use GC
+// (i.e., most programs) at the cost of increased overhead for clients which do
+// use GC.
+static DenseMap<const Function*,PooledStringPtr> *GCNames;
+static StringPool *GCNamePool;
+
+bool Function::hasGC() const {
+ return GCNames && GCNames->count(this);
+}
+
+const char *Function::getGC() const {
+ assert(hasGC() && "Function has no collector");
+ return *(*GCNames)[this];
+}
+
+void Function::setGC(const char *Str) {
+ if (!GCNamePool)
+ GCNamePool = new StringPool();
+ if (!GCNames)
+ GCNames = new DenseMap<const Function*,PooledStringPtr>();
+ (*GCNames)[this] = GCNamePool->intern(Str);
+}
+
+void Function::clearGC() {
+ if (GCNames) {
+ GCNames->erase(this);
+ if (GCNames->empty()) {
+ delete GCNames;
+ GCNames = 0;
+ if (GCNamePool->empty()) {
+ delete GCNamePool;
+ GCNamePool = 0;
+ }
+ }
+ }
+}
+
+/// copyAttributesFrom - copy all additional attributes (those not needed to
+/// create a Function) from the Function Src to this one.
+void Function::copyAttributesFrom(const GlobalValue *Src) {
+ assert(isa<Function>(Src) && "Expected a Function!");
+ GlobalValue::copyAttributesFrom(Src);
+ const Function *SrcF = cast<Function>(Src);
+ setCallingConv(SrcF->getCallingConv());
+ setParamAttrs(SrcF->getParamAttrs());
+ if (SrcF->hasGC())
+ setGC(SrcF->getGC());
+ else
+ clearGC();
+}
+
/// 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
/// particular intrinsic functions which correspond to this value are defined in
/// llvm/Intrinsics.h.
///
-unsigned Function::getIntrinsicID() const {
+unsigned Function::getIntrinsicID(bool noAssert) const {
const ValueName *ValName = this->getValueName();
+ if (!ValName)
+ return 0;
unsigned Len = ValName->getKeyLength();
const char *Name = ValName->getKeyData();
|| Name[2] != 'v' || Name[3] != 'm')
return 0; // All intrinsics start with 'llvm.'
- assert(Len != 5 && "'llvm.' is an invalid intrinsic name!");
+ 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;
}
if (numTys == 0)
return Table[id];
std::string Result(Table[id]);
- for (unsigned i = 0; i < numTys; ++i)
- if (Tys[i])
- Result += "." + Tys[i]->getDescription();
+ for (unsigned i = 0; i < numTys; ++i) {
+ if (const PointerType* PTyp = dyn_cast<PointerType>(Tys[i])) {
+ Result += ".p" + llvm::utostr(PTyp->getAddressSpace()) +
+ MVT::getMVT(PTyp->getElementType()).getMVTString();
+ }
+ else if (Tys[i])
+ Result += "." + MVT::getMVT(Tys[i]).getMVTString();
+ }
return Result;
}
const FunctionType *Intrinsic::getType(ID id, const Type **Tys,
- uint32_t numTys) {
+ unsigned numTys) {
const Type *ResultTy = NULL;
std::vector<const Type*> ArgTys;
- std::vector<FunctionType::ParameterAttributes> Attrs;
bool IsVarArg = false;
#define GET_INTRINSIC_GENERATOR
#include "llvm/Intrinsics.gen"
#undef GET_INTRINSIC_GENERATOR
- return FunctionType::get(ResultTy, ArgTys, IsVarArg, Attrs);
+ return FunctionType::get(ResultTy, ArgTys, IsVarArg);
+}
+
+PAListPtr Intrinsic::getParamAttrs(ID id) {
+ ParameterAttributes Attr = ParamAttr::None;
+
+#define GET_INTRINSIC_ATTRIBUTES
+#include "llvm/Intrinsics.gen"
+#undef GET_INTRINSIC_ATTRIBUTES
+
+ // Intrinsics cannot throw exceptions.
+ Attr |= ParamAttr::NoUnwind;
+
+ ParamAttrsWithIndex PAWI = ParamAttrsWithIndex::get(0, Attr);
+ return PAListPtr::get(&PAWI, 1);
}
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)));
-}
-
-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)) {
- 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;
+ // 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)));
}
// vim: sw=2 ai
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