-//===-- 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/Module.h"
#include "llvm/DerivedTypes.h"
-#include "llvm/iOther.h"
-#include "llvm/Intrinsics.h"
-#include "Support/LeakDetector.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>::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, Function>;
+template class SymbolTableListTraits<BasicBlock, Function, Function>;
//===----------------------------------------------------------------------===//
// Argument Implementation
//===----------------------------------------------------------------------===//
-Argument::Argument(const Type *Ty, const std::string &Name, Function *Par)
+Argument::Argument(const Type *Ty, const std::string &Name, Function *Par)
: Value(Ty, Value::ArgumentVal, Name) {
Parent = 0;
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);
-}
-
void Argument::setParent(Function *parent) {
if (getParent())
LeakDetector::addGarbageObject(this);
LeakDetector::removeGarbageObject(this);
}
-
//===----------------------------------------------------------------------===//
// Function Implementation
//===----------------------------------------------------------------------===//
Function::Function(const FunctionType *Ty, LinkageTypes Linkage,
const std::string &name, Module *ParentModule)
- : GlobalValue(PointerType::get(Ty), Value::FunctionVal, Linkage, name) {
+ : 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 &&
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;
}
-// 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::setParent(Module *parent) {
if (getParent())
LeakDetector::addGarbageObject(this);
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 = getValueSymbolTable(); // Local Symtab
+ SymbolTable &GST = getParent()->getValueSymbolTable(); // 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 (isa<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 (iterator I = begin(), E = end(); I != E; ++I)
I->dropAllReferences();
+ BasicBlocks.clear(); // Delete all basic blocks...
}
/// getIntrinsicID - This method returns the ID number of the specified
-/// function, or LLVMIntrinsic::not_intrinsic if the function is not an
-/// instrinsic, or if the pointer is null. This value is always defined to be
+/// 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')
+ 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.'
-
- // a table of all Alpha intrinsic functions
- struct {
- std::string name; // The name of the intrinsic
- unsigned id; // Its ID number
- } alpha_intrinsics[] = {
- { "llvm.alpha.ctlz", LLVMIntrinsic::alpha_ctlz },
- { "llvm.alpha.cttz", LLVMIntrinsic::alpha_cttz },
- { "llvm.alpha.ctpop", LLVMIntrinsic::alpha_ctpop },
- { "llvm.alpha.umulh", LLVMIntrinsic::alpha_umulh },
- { "llvm.alpha.vecop", LLVMIntrinsic::alpha_vecop },
- { "llvm.alpha.pup", LLVMIntrinsic::alpha_pup },
- { "llvm.alpha.bytezap", LLVMIntrinsic::alpha_bytezap },
- { "llvm.alpha.bytemanip", LLVMIntrinsic::alpha_bytemanip },
- { "llvm.alpha.dfp_bop", LLVMIntrinsic::alpha_dfpbop },
- { "llvm.alpha.dfp_uop", LLVMIntrinsic::alpha_dfpuop },
- { "llvm.alpha.unordered", LLVMIntrinsic::alpha_unordered },
- { "llvm.alpha.uqtodfp", LLVMIntrinsic::alpha_uqtodfp },
- { "llvm.alpha.uqtosfp", LLVMIntrinsic::alpha_uqtosfp },
- { "llvm.alpha.dfptosq", LLVMIntrinsic::alpha_dfptosq },
- { "llvm.alpha.sfptosq", LLVMIntrinsic::alpha_sfptosq },
- };
- const unsigned num_alpha_intrinsics =
- sizeof(alpha_intrinsics) / sizeof(*alpha_intrinsics);
-
- switch (getName()[5]) {
- case 'a':
- if (getName().size() > 11 &&
- std::string(getName().begin()+4, getName().begin()+11) == ".alpha.")
- for (unsigned i = 0; i < num_alpha_intrinsics; ++i)
- if (getName() == alpha_intrinsics[i].name)
- return alpha_intrinsics[i].id;
- break;
- case 'l':
- if (getName() == "llvm.longjmp") return LLVMIntrinsic::longjmp;
- break;
- case 's':
- if (getName() == "llvm.setjmp") return LLVMIntrinsic::setjmp;
- if (getName() == "llvm.sigsetjmp") return LLVMIntrinsic::sigsetjmp;
- if (getName() == "llvm.siglongjmp") return LLVMIntrinsic::siglongjmp;
- break;
- case 'v':
- if (getName() == "llvm.va_copy") return LLVMIntrinsic::va_copy;
- if (getName() == "llvm.va_end") return LLVMIntrinsic::va_end;
- if (getName() == "llvm.va_start") return LLVMIntrinsic::va_start;
- break;
- }
- // The "llvm." namespace is reserved!
- assert(0 && "Unknown LLVM intrinsic function!");
- return 0;
-}
+ assert(Name.size() != 5 && "'llvm.' is an invalid intrinsic name!");
-//===----------------------------------------------------------------------===//
-// GlobalVariable Implementation
-//===----------------------------------------------------------------------===//
-
-GlobalVariable::GlobalVariable(const Type *Ty, bool constant, LinkageTypes Link,
- Constant *Initializer,
- const std::string &Name, Module *ParentModule)
- : GlobalValue(PointerType::get(Ty), Value::GlobalVariableVal, Link, Name),
- isConstantGlobal(constant) {
- if (Initializer) Operands.push_back(Use((Value*)Initializer, this));
-
- LeakDetector::addGarbageObject(this);
-
- if (ParentModule)
- ParentModule->getGlobalList().push_back(this);
+#define GET_FUNCTION_RECOGNIZER
+#include "llvm/Intrinsics.gen"
+#undef GET_FUNCTION_RECOGNIZER
+ return 0;
}
-void GlobalVariable::setParent(Module *parent) {
- if (getParent())
- LeakDetector::addGarbageObject(this);
- Parent = parent;
- if (getParent())
- LeakDetector::removeGarbageObject(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];
+}
+
+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;
+ }
-// 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);
+ 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;
}
+
+// vim: sw=2 ai
projects / oota-llvm.git / blobdiff