2003-10-13 03:32:08 +00:00
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//===-- Function.cpp - Implement the Global object classes ----------------===//
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2005-04-21 23:48:37 +00:00
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//
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2003-10-20 19:43:21 +00:00
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// The LLVM Compiler Infrastructure
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//
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2007-12-29 20:36:04 +00:00
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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2005-04-21 23:48:37 +00:00
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//
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2003-10-20 19:43:21 +00:00
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//===----------------------------------------------------------------------===//
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2001-06-06 20:29:01 +00:00
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//
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2007-02-05 20:47:22 +00:00
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// This file implements the Function class for the VMCore library.
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2001-06-06 20:29:01 +00:00
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Module.h"
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2002-09-06 20:46:32 +00:00
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#include "llvm/DerivedTypes.h"
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2004-10-12 04:20:25 +00:00
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#include "llvm/IntrinsicInst.h"
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2007-08-20 19:23:34 +00:00
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#include "llvm/CodeGen/ValueTypes.h"
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2004-09-01 22:55:40 +00:00
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#include "llvm/Support/LeakDetector.h"
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2007-12-10 03:18:06 +00:00
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#include "llvm/Support/StringPool.h"
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2002-06-25 16:13:24 +00:00
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#include "SymbolTableListTraitsImpl.h"
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2007-12-03 20:06:50 +00:00
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#include "llvm/ADT/BitVector.h"
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2007-12-10 03:18:06 +00:00
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#include "llvm/ADT/DenseMap.h"
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2004-12-05 06:43:27 +00:00
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#include "llvm/ADT/StringExtras.h"
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2003-11-21 20:23:48 +00:00
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using namespace llvm;
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2003-11-11 22:41:34 +00:00
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2005-01-30 00:09:23 +00:00
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BasicBlock *ilist_traits<BasicBlock>::createSentinel() {
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2008-04-06 20:25:17 +00:00
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BasicBlock *Ret = BasicBlock::Create();
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2002-09-08 18:59:35 +00:00
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// This should not be garbage monitored.
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LeakDetector::removeGarbageObject(Ret);
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return Ret;
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2002-09-06 21:33:15 +00:00
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}
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2002-06-25 16:13:24 +00:00
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iplist<BasicBlock> &ilist_traits<BasicBlock>::getList(Function *F) {
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return F->getBasicBlockList();
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}
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2005-01-30 00:09:23 +00:00
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Argument *ilist_traits<Argument>::createSentinel() {
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2006-12-31 05:26:44 +00:00
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Argument *Ret = new Argument(Type::Int32Ty);
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2002-09-08 18:59:35 +00:00
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// This should not be garbage monitored.
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LeakDetector::removeGarbageObject(Ret);
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return Ret;
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2002-06-25 16:13:24 +00:00
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}
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iplist<Argument> &ilist_traits<Argument>::getList(Function *F) {
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return F->getArgumentList();
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}
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// Explicit instantiations of SymbolTableListTraits since some of the methods
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// are not in the public header file...
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2007-04-17 03:26:42 +00:00
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template class SymbolTableListTraits<Argument, Function>;
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template class SymbolTableListTraits<BasicBlock, Function>;
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2001-06-06 20:29:01 +00:00
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2002-04-09 19:39:35 +00:00
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//===----------------------------------------------------------------------===//
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// Argument Implementation
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//===----------------------------------------------------------------------===//
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2005-04-21 23:48:37 +00:00
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Argument::Argument(const Type *Ty, const std::string &Name, Function *Par)
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2007-02-12 05:18:08 +00:00
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: Value(Ty, Value::ArgumentVal) {
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2002-09-06 21:33:15 +00:00
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Parent = 0;
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2002-09-08 18:59:35 +00:00
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// Make sure that we get added to a function
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LeakDetector::addGarbageObject(this);
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2002-09-06 21:33:15 +00:00
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if (Par)
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Par->getArgumentList().push_back(this);
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2007-02-12 05:18:08 +00:00
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setName(Name);
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2002-09-06 21:33:15 +00:00
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}
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void Argument::setParent(Function *parent) {
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2002-09-08 18:59:35 +00:00
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if (getParent())
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LeakDetector::addGarbageObject(this);
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2002-09-06 21:33:15 +00:00
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Parent = parent;
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2002-09-08 18:59:35 +00:00
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if (getParent())
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LeakDetector::removeGarbageObject(this);
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2002-09-06 21:33:15 +00:00
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}
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2008-01-24 17:47:11 +00:00
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/// getArgNo - Return the index of this formal argument in its containing
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/// function. For example in "void foo(int a, float b)" a is 0 and b is 1.
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unsigned Argument::getArgNo() const {
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const Function *F = getParent();
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assert(F && "Argument is not in a function");
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Function::const_arg_iterator AI = F->arg_begin();
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unsigned ArgIdx = 0;
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for (; &*AI != this; ++AI)
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++ArgIdx;
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return ArgIdx;
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}
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/// hasByValAttr - Return true if this argument has the byval attribute on it
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/// in its containing function.
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bool Argument::hasByValAttr() const {
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if (!isa<PointerType>(getType())) return false;
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return getParent()->paramHasAttr(getArgNo()+1, ParamAttr::ByVal);
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}
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/// hasNoAliasAttr - Return true if this argument has the noalias attribute on
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/// it in its containing function.
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bool Argument::hasNoAliasAttr() const {
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if (!isa<PointerType>(getType())) return false;
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return getParent()->paramHasAttr(getArgNo()+1, ParamAttr::NoAlias);
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}
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2008-02-17 23:22:28 +00:00
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/// hasSRetAttr - Return true if this argument has the sret attribute on
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/// it in its containing function.
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bool Argument::hasStructRetAttr() const {
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if (!isa<PointerType>(getType())) return false;
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2008-05-15 10:04:30 +00:00
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if (this != getParent()->arg_begin())
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return false; // StructRet param must be first param
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2008-02-18 04:06:26 +00:00
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return getParent()->paramHasAttr(1, ParamAttr::StructRet);
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2008-02-17 23:22:28 +00:00
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}
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2008-04-28 17:37:06 +00:00
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/// addAttr - Add a ParamAttr to an argument
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2008-09-23 23:03:40 +00:00
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void Argument::addAttr(Attributes attr) {
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2008-07-08 09:41:30 +00:00
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getParent()->addParamAttr(getArgNo() + 1, attr);
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2008-04-28 17:37:06 +00:00
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}
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2008-07-08 09:41:30 +00:00
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2008-04-28 17:37:06 +00:00
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/// removeAttr - Remove a ParamAttr from an argument
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2008-09-23 23:03:40 +00:00
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void Argument::removeAttr(Attributes attr) {
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2008-07-08 09:41:30 +00:00
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getParent()->removeParamAttr(getArgNo() + 1, attr);
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2008-04-28 17:37:06 +00:00
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}
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2008-01-24 17:47:11 +00:00
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2007-04-09 15:01:12 +00:00
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//===----------------------------------------------------------------------===//
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2008-01-02 23:42:30 +00:00
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// Helper Methods in Function
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2007-04-09 15:01:12 +00:00
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//===----------------------------------------------------------------------===//
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2008-01-02 23:42:30 +00:00
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const FunctionType *Function::getFunctionType() const {
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return cast<FunctionType>(getType()->getElementType());
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2007-04-09 15:01:12 +00:00
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}
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2008-01-02 23:42:30 +00:00
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bool Function::isVarArg() const {
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return getFunctionType()->isVarArg();
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2007-04-09 15:01:12 +00:00
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}
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2008-01-02 23:42:30 +00:00
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const Type *Function::getReturnType() const {
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return getFunctionType()->getReturnType();
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2007-11-25 14:10:56 +00:00
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}
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2008-01-02 23:42:30 +00:00
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void Function::removeFromParent() {
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getParent()->getFunctionList().remove(this);
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2007-11-25 14:10:56 +00:00
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}
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2008-01-02 23:42:30 +00:00
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void Function::eraseFromParent() {
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getParent()->getFunctionList().erase(this);
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2007-04-09 15:01:12 +00:00
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}
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2001-09-10 07:58:01 +00:00
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//===----------------------------------------------------------------------===//
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2002-03-26 18:01:55 +00:00
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// Function Implementation
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2001-09-10 07:58:01 +00:00
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//===----------------------------------------------------------------------===//
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2003-04-16 20:28:45 +00:00
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Function::Function(const FunctionType *Ty, LinkageTypes Linkage,
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2002-09-06 20:46:32 +00:00
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const std::string &name, Module *ParentModule)
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2007-12-17 01:12:55 +00:00
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: GlobalValue(PointerType::getUnqual(Ty),
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2008-03-12 17:45:29 +00:00
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Value::FunctionVal, 0, 0, Linkage, name) {
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2007-02-05 20:47:22 +00:00
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SymTab = new ValueSymbolTable();
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2002-09-06 20:46:32 +00:00
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2008-02-20 22:36:03 +00:00
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assert((getReturnType()->isFirstClassType() ||getReturnType() == Type::VoidTy
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2008-02-21 22:24:17 +00:00
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|| isa<StructType>(getReturnType()))
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2003-11-21 22:32:23 +00:00
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&& "LLVM functions cannot return aggregate values!");
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2007-08-18 06:14:52 +00:00
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// If the function has arguments, mark them as lazily built.
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if (Ty->getNumParams())
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SubclassData = 1; // Set the "has lazy arguments" bit.
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2002-09-08 18:59:35 +00:00
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// Make sure that we get added to a function
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LeakDetector::addGarbageObject(this);
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2002-09-06 20:46:32 +00:00
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if (ParentModule)
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ParentModule->getFunctionList().push_back(this);
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2008-04-07 13:39:11 +00:00
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// Ensure intrinsics have the right parameter attributes.
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if (unsigned IID = getIntrinsicID(true))
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setParamAttrs(Intrinsic::getParamAttrs(Intrinsic::ID(IID)));
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2008-09-02 20:51:15 +00:00
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2001-06-06 20:29:01 +00:00
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}
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2007-12-10 02:14:30 +00:00
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Function::~Function() {
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dropAllReferences(); // After this it is safe to delete instructions.
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2001-06-06 20:29:01 +00:00
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// Delete all of the method arguments and unlink from symbol table...
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2007-12-10 02:14:30 +00:00
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ArgumentList.clear();
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delete SymTab;
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2007-04-22 17:28:03 +00:00
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2008-08-17 18:44:35 +00:00
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// Remove the function from the on-the-side GC table.
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clearGC();
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2001-06-06 20:29:01 +00:00
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}
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2007-08-18 06:14:52 +00:00
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void Function::BuildLazyArguments() const {
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// Create the arguments vector, all arguments start out unnamed.
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const FunctionType *FT = getFunctionType();
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for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) {
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assert(FT->getParamType(i) != Type::VoidTy &&
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"Cannot have void typed arguments!");
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ArgumentList.push_back(new Argument(FT->getParamType(i)));
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}
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// Clear the lazy arguments bit.
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const_cast<Function*>(this)->SubclassData &= ~1;
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}
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size_t Function::arg_size() const {
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return getFunctionType()->getNumParams();
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}
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bool Function::arg_empty() const {
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return getFunctionType()->getNumParams() == 0;
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}
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2002-03-23 22:51:58 +00:00
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void Function::setParent(Module *parent) {
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2002-09-08 18:59:35 +00:00
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if (getParent())
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LeakDetector::addGarbageObject(this);
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2001-06-06 20:29:01 +00:00
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Parent = parent;
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2002-09-08 18:59:35 +00:00
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if (getParent())
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LeakDetector::removeGarbageObject(this);
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2001-06-06 20:29:01 +00:00
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}
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// dropAllReferences() - This function causes all the subinstructions to "let
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// go" of all references that they are maintaining. This allows one to
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// 'delete' a whole class at a time, even though there may be circular
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// references... first all references are dropped, and all use counts go to
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2003-10-10 17:54:14 +00:00
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// zero. Then everything is deleted for real. Note that no operations are
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2005-04-21 23:48:37 +00:00
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// valid on an object that has "dropped all references", except operator
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2001-06-06 20:29:01 +00:00
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// delete.
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//
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2002-03-23 22:51:58 +00:00
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void Function::dropAllReferences() {
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2002-06-25 16:13:24 +00:00
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for (iterator I = begin(), E = end(); I != E; ++I)
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I->dropAllReferences();
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2003-09-17 04:58:59 +00:00
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BasicBlocks.clear(); // Delete all basic blocks...
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2001-06-06 20:29:01 +00:00
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}
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2001-09-10 07:58:01 +00:00
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2008-09-23 23:03:40 +00:00
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void Function::addParamAttr(unsigned i, Attributes attr) {
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2008-04-08 07:23:58 +00:00
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PAListPtr PAL = getParamAttrs();
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2008-07-08 09:41:30 +00:00
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PAL = PAL.addAttr(i, attr);
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2008-04-08 07:23:58 +00:00
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setParamAttrs(PAL);
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}
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2008-09-23 23:03:40 +00:00
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void Function::removeParamAttr(unsigned i, Attributes attr) {
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2008-05-16 20:39:43 +00:00
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PAListPtr PAL = getParamAttrs();
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2008-07-08 09:41:30 +00:00
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PAL = PAL.removeAttr(i, attr);
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2008-05-16 20:39:43 +00:00
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setParamAttrs(PAL);
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}
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2008-08-17 18:44:35 +00:00
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// Maintain the GC name for each function in an on-the-side table. This saves
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// allocating an additional word in Function for programs which do not use GC
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// (i.e., most programs) at the cost of increased overhead for clients which do
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// use GC.
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static DenseMap<const Function*,PooledStringPtr> *GCNames;
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static StringPool *GCNamePool;
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2007-12-10 03:18:06 +00:00
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2008-08-17 18:44:35 +00:00
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bool Function::hasGC() const {
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return GCNames && GCNames->count(this);
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2007-12-10 03:18:06 +00:00
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}
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2008-08-17 18:44:35 +00:00
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const char *Function::getGC() const {
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assert(hasGC() && "Function has no collector");
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return *(*GCNames)[this];
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2007-12-10 03:18:06 +00:00
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}
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2008-08-17 18:44:35 +00:00
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void Function::setGC(const char *Str) {
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if (!GCNamePool)
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GCNamePool = new StringPool();
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if (!GCNames)
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GCNames = new DenseMap<const Function*,PooledStringPtr>();
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(*GCNames)[this] = GCNamePool->intern(Str);
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2007-12-10 03:18:06 +00:00
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}
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2008-08-17 18:44:35 +00:00
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void Function::clearGC() {
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if (GCNames) {
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GCNames->erase(this);
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if (GCNames->empty()) {
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delete GCNames;
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GCNames = 0;
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if (GCNamePool->empty()) {
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delete GCNamePool;
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GCNamePool = 0;
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2007-12-10 03:35:18 +00:00
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}
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2007-12-10 03:18:06 +00:00
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}
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}
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}
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2008-05-26 19:58:59 +00:00
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/// copyAttributesFrom - copy all additional attributes (those not needed to
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/// create a Function) from the Function Src to this one.
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void Function::copyAttributesFrom(const GlobalValue *Src) {
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assert(isa<Function>(Src) && "Expected a Function!");
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GlobalValue::copyAttributesFrom(Src);
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const Function *SrcF = cast<Function>(Src);
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setCallingConv(SrcF->getCallingConv());
|
|
|
|
setParamAttrs(SrcF->getParamAttrs());
|
2008-08-17 18:44:35 +00:00
|
|
|
if (SrcF->hasGC())
|
|
|
|
setGC(SrcF->getGC());
|
|
|
|
else
|
|
|
|
clearGC();
|
2008-05-26 19:58:59 +00:00
|
|
|
}
|
|
|
|
|
2003-05-08 03:47:33 +00:00
|
|
|
/// getIntrinsicID - This method returns the ID number of the specified
|
2003-11-11 22:41:34 +00:00
|
|
|
/// function, or Intrinsic::not_intrinsic if the function is not an
|
2003-10-10 17:54:14 +00:00
|
|
|
/// intrinsic, or if the pointer is null. This value is always defined to be
|
2003-05-08 03:47:33 +00:00
|
|
|
/// 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.
|
|
|
|
///
|
2007-04-16 06:54:34 +00:00
|
|
|
unsigned Function::getIntrinsicID(bool noAssert) const {
|
2007-02-15 19:17:16 +00:00
|
|
|
const ValueName *ValName = this->getValueName();
|
2007-04-16 07:08:44 +00:00
|
|
|
if (!ValName)
|
|
|
|
return 0;
|
2007-02-15 19:17:16 +00:00
|
|
|
unsigned Len = ValName->getKeyLength();
|
|
|
|
const char *Name = ValName->getKeyData();
|
|
|
|
|
2007-04-16 16:56:54 +00:00
|
|
|
if (Len < 5 || Name[4] != '.' || Name[0] != 'l' || Name[1] != 'l'
|
For PR411:
This patch is an incremental step towards supporting a flat symbol table.
It de-overloads the intrinsic functions by providing type-specific intrinsics
and arranging for automatically upgrading from the old overloaded name to
the new non-overloaded name. Specifically:
llvm.isunordered -> llvm.isunordered.f32, llvm.isunordered.f64
llvm.sqrt -> llvm.sqrt.f32, llvm.sqrt.f64
llvm.ctpop -> llvm.ctpop.i8, llvm.ctpop.i16, llvm.ctpop.i32, llvm.ctpop.i64
llvm.ctlz -> llvm.ctlz.i8, llvm.ctlz.i16, llvm.ctlz.i32, llvm.ctlz.i64
llvm.cttz -> llvm.cttz.i8, llvm.cttz.i16, llvm.cttz.i32, llvm.cttz.i64
New code should not use the overloaded intrinsic names. Warnings will be
emitted if they are used.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25366 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-16 21:12:35 +00:00
|
|
|
|| Name[2] != 'v' || Name[3] != 'm')
|
2003-05-08 03:47:33 +00:00
|
|
|
return 0; // All intrinsics start with 'llvm.'
|
2003-09-19 19:31:41 +00:00
|
|
|
|
2007-04-16 06:54:34 +00:00
|
|
|
assert((Len != 5 || noAssert) && "'llvm.' is an invalid intrinsic name!");
|
2005-04-21 23:48:37 +00:00
|
|
|
|
2006-03-09 20:35:01 +00:00
|
|
|
#define GET_FUNCTION_RECOGNIZER
|
|
|
|
#include "llvm/Intrinsics.gen"
|
|
|
|
#undef GET_FUNCTION_RECOGNIZER
|
2007-04-16 06:54:34 +00:00
|
|
|
assert(noAssert && "Invalid LLVM intrinsic name");
|
2003-05-08 03:47:33 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-04-01 07:25:33 +00:00
|
|
|
std::string Intrinsic::getName(ID id, const Type **Tys, unsigned numTys) {
|
2006-03-25 06:32:47 +00:00
|
|
|
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
|
|
|
|
};
|
2007-04-01 07:25:33 +00:00
|
|
|
if (numTys == 0)
|
|
|
|
return Table[id];
|
|
|
|
std::string Result(Table[id]);
|
2008-07-30 04:36:53 +00:00
|
|
|
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])
|
2008-06-06 12:08:01 +00:00
|
|
|
Result += "." + MVT::getMVT(Tys[i]).getMVTString();
|
2008-07-30 04:36:53 +00:00
|
|
|
}
|
2007-04-01 07:25:33 +00:00
|
|
|
return Result;
|
2006-03-25 06:32:47 +00:00
|
|
|
}
|
|
|
|
|
2007-04-01 07:25:33 +00:00
|
|
|
const FunctionType *Intrinsic::getType(ID id, const Type **Tys,
|
2007-06-05 23:49:06 +00:00
|
|
|
unsigned numTys) {
|
2007-02-07 20:38:26 +00:00
|
|
|
const Type *ResultTy = NULL;
|
|
|
|
std::vector<const Type*> ArgTys;
|
|
|
|
bool IsVarArg = false;
|
|
|
|
|
|
|
|
#define GET_INTRINSIC_GENERATOR
|
|
|
|
#include "llvm/Intrinsics.gen"
|
|
|
|
#undef GET_INTRINSIC_GENERATOR
|
|
|
|
|
2007-04-09 06:11:23 +00:00
|
|
|
return FunctionType::get(ResultTy, ArgTys, IsVarArg);
|
2007-02-07 20:38:26 +00:00
|
|
|
}
|
|
|
|
|
2008-03-12 17:45:29 +00:00
|
|
|
PAListPtr Intrinsic::getParamAttrs(ID id) {
|
2008-09-23 23:03:40 +00:00
|
|
|
Attributes Attr = ParamAttr::None;
|
2007-12-03 20:06:50 +00:00
|
|
|
|
|
|
|
#define GET_INTRINSIC_ATTRIBUTES
|
|
|
|
#include "llvm/Intrinsics.gen"
|
|
|
|
#undef GET_INTRINSIC_ATTRIBUTES
|
|
|
|
|
|
|
|
// Intrinsics cannot throw exceptions.
|
|
|
|
Attr |= ParamAttr::NoUnwind;
|
|
|
|
|
2008-03-12 17:45:29 +00:00
|
|
|
ParamAttrsWithIndex PAWI = ParamAttrsWithIndex::get(0, Attr);
|
|
|
|
return PAListPtr::get(&PAWI, 1);
|
2007-12-03 20:06:50 +00:00
|
|
|
}
|
|
|
|
|
2007-04-01 07:25:33 +00:00
|
|
|
Function *Intrinsic::getDeclaration(Module *M, ID id, const Type **Tys,
|
|
|
|
unsigned numTys) {
|
2007-12-03 20:06:50 +00:00
|
|
|
// There can never be multiple globals with the same name of different types,
|
|
|
|
// because intrinsics must be a specific type.
|
2008-04-07 13:39:11 +00:00
|
|
|
return
|
2007-12-03 20:06:50 +00:00
|
|
|
cast<Function>(M->getOrInsertFunction(getName(id, Tys, numTys),
|
|
|
|
getType(id, Tys, numTys)));
|
2007-02-07 20:38:26 +00:00
|
|
|
}
|
|
|
|
|
2004-07-17 23:50:19 +00:00
|
|
|
// vim: sw=2 ai
|