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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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source 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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2007-04-09 06:11:23 +00:00
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#include "llvm/ParameterAttributes.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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2004-09-01 22:55:40 +00:00
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#include "llvm/Support/LeakDetector.h"
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2002-06-25 16:13:24 +00:00
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#include "SymbolTableListTraitsImpl.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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2002-09-08 18:59:35 +00:00
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BasicBlock *Ret = new BasicBlock();
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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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2003-11-05 05:15:42 +00:00
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template class SymbolTableListTraits<Argument, Function, Function>;
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template class SymbolTableListTraits<BasicBlock, Function, 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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2007-04-09 15:01:12 +00:00
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//===----------------------------------------------------------------------===//
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// ParamAttrsList Implementation
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//===----------------------------------------------------------------------===//
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uint16_t
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ParamAttrsList::getParamAttrs(uint16_t Index) const {
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unsigned limit = attrs.size();
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for (unsigned i = 0; i < limit; ++i)
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if (attrs[i].index == Index)
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return attrs[i].attrs;
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2007-04-11 02:44:20 +00:00
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return ParamAttr::None;
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2007-04-09 15:01:12 +00:00
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}
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std::string
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ParamAttrsList::getParamAttrsText(uint16_t Attrs) {
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std::string Result;
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2007-04-11 02:44:20 +00:00
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if (Attrs & ParamAttr::ZExt)
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2007-04-09 15:01:12 +00:00
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Result += "zext ";
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2007-04-11 02:44:20 +00:00
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if (Attrs & ParamAttr::SExt)
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2007-04-09 15:01:12 +00:00
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Result += "sext ";
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2007-04-11 02:44:20 +00:00
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if (Attrs & ParamAttr::NoReturn)
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2007-04-09 15:01:12 +00:00
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Result += "noreturn ";
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2007-04-11 02:44:20 +00:00
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if (Attrs & ParamAttr::NoUnwind)
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2007-04-09 15:01:12 +00:00
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Result += "nounwind ";
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2007-04-11 02:44:20 +00:00
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if (Attrs & ParamAttr::InReg)
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2007-04-09 15:01:12 +00:00
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Result += "inreg ";
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2007-04-11 02:44:20 +00:00
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if (Attrs & ParamAttr::StructRet)
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2007-04-09 15:01:12 +00:00
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Result += "sret ";
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return Result;
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}
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void
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ParamAttrsList::addAttributes(uint16_t Index, uint16_t Attrs) {
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// First, try to replace an existing one
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for (unsigned i = 0; i < attrs.size(); ++i)
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if (attrs[i].index == Index) {
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attrs[i].attrs |= Attrs;
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return;
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}
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// If not found, add a new one
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ParamAttrsWithIndex Val;
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Val.attrs = Attrs;
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Val.index = Index;
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attrs.push_back(Val);
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}
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void
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ParamAttrsList::removeAttributes(uint16_t Index, uint16_t Attrs) {
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// Find the index from which to remove the attributes
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for (unsigned i = 0; i < attrs.size(); ++i)
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if (attrs[i].index == Index) {
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attrs[i].attrs &= ~Attrs;
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2007-04-11 02:44:20 +00:00
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if (attrs[i].attrs == ParamAttr::None)
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2007-04-09 15:01:12 +00:00
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attrs.erase(&attrs[i]);
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return;
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}
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// The index wasn't found above
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assert(0 && "Index not found for removeAttributes");
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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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2005-01-29 00:35:33 +00:00
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: GlobalValue(PointerType::get(Ty), Value::FunctionVal, 0, 0, Linkage, name) {
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2007-04-09 15:01:12 +00:00
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ParamAttrs = 0;
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2005-05-06 20:26:43 +00:00
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CallingConvention = 0;
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2002-06-25 16:13:24 +00:00
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BasicBlocks.setItemParent(this);
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BasicBlocks.setParent(this);
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ArgumentList.setItemParent(this);
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ArgumentList.setParent(this);
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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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2003-11-21 22:32:23 +00:00
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assert((getReturnType()->isFirstClassType() ||getReturnType() == Type::VoidTy)
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&& "LLVM functions cannot return aggregate values!");
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2002-10-13 20:57:00 +00:00
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// Create the arguments vector, all arguments start out unnamed.
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for (unsigned i = 0, e = Ty->getNumParams(); i != e; ++i) {
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assert(Ty->getParamType(i) != Type::VoidTy &&
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"Cannot have void typed arguments!");
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ArgumentList.push_back(new Argument(Ty->getParamType(i)));
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}
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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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2001-06-06 20:29:01 +00:00
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}
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2002-03-23 22:51:58 +00:00
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Function::~Function() {
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2001-06-06 20:29:01 +00:00
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dropAllReferences(); // After this it is safe to delete instructions.
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// Delete all of the method arguments and unlink from symbol table...
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2002-06-25 16:13:24 +00:00
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ArgumentList.clear();
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2001-06-06 20:29:01 +00:00
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ArgumentList.setParent(0);
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2002-04-28 04:51:51 +00:00
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delete SymTab;
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2001-06-06 20:29:01 +00:00
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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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2002-03-29 03:44:36 +00:00
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const FunctionType *Function::getFunctionType() const {
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return cast<FunctionType>(getType()->getElementType());
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2001-10-03 14:53:21 +00:00
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}
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2005-01-07 07:40:32 +00:00
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bool Function::isVarArg() const {
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return getFunctionType()->isVarArg();
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}
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2005-04-21 23:48:37 +00:00
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const Type *Function::getReturnType() const {
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2002-03-29 03:44:36 +00:00
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return getFunctionType()->getReturnType();
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2001-06-06 20:29:01 +00:00
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}
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2004-10-11 22:21:39 +00:00
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void Function::removeFromParent() {
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getParent()->getFunctionList().remove(this);
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}
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void Function::eraseFromParent() {
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getParent()->getFunctionList().erase(this);
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}
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2001-06-06 20:29:01 +00:00
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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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2003-05-08 03:47:33 +00:00
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/// getIntrinsicID - This method returns the ID number of the specified
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2003-11-11 22:41:34 +00:00
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/// function, or Intrinsic::not_intrinsic if the function is not an
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2003-10-10 17:54:14 +00:00
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/// intrinsic, or if the pointer is null. This value is always defined to be
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2003-05-08 03:47:33 +00:00
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/// zero to allow easy checking for whether a function is intrinsic or not. The
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/// particular intrinsic functions which correspond to this value are defined in
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/// llvm/Intrinsics.h.
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///
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unsigned Function::getIntrinsicID() const {
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2007-02-15 19:17:16 +00:00
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const ValueName *ValName = this->getValueName();
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unsigned Len = ValName->getKeyLength();
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const char *Name = ValName->getKeyData();
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if (Len < 5 || Name[4] != '.' || Name[0] != 'l' || Name[1] != 'l'
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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.
llvm-svn: 25366
2006-01-16 21:12:35 +00:00
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|| Name[2] != 'v' || Name[3] != 'm')
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2003-05-08 03:47:33 +00:00
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return 0; // All intrinsics start with 'llvm.'
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2003-09-19 19:31:41 +00:00
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2007-02-15 19:17:16 +00:00
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assert(Len != 5 && "'llvm.' is an invalid intrinsic name!");
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2005-04-21 23:48:37 +00:00
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2006-03-09 20:35:01 +00:00
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#define GET_FUNCTION_RECOGNIZER
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#include "llvm/Intrinsics.gen"
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#undef GET_FUNCTION_RECOGNIZER
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2003-05-08 03:47:33 +00:00
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return 0;
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}
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2007-04-01 07:25:33 +00:00
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std::string Intrinsic::getName(ID id, const Type **Tys, unsigned numTys) {
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2006-03-25 06:32:47 +00:00
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assert(id < num_intrinsics && "Invalid intrinsic ID!");
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const char * const Table[] = {
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"not_intrinsic",
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#define GET_INTRINSIC_NAME_TABLE
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#include "llvm/Intrinsics.gen"
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#undef GET_INTRINSIC_NAME_TABLE
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};
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2007-04-01 07:25:33 +00:00
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if (numTys == 0)
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return Table[id];
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std::string Result(Table[id]);
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for (unsigned i = 0; i < numTys; ++i)
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if (Tys[i])
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Result += "." + Tys[i]->getDescription();
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return Result;
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2006-03-25 06:32:47 +00:00
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}
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2007-04-01 07:25:33 +00:00
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const FunctionType *Intrinsic::getType(ID id, const Type **Tys,
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uint32_t numTys) {
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2007-02-07 20:38:26 +00:00
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const Type *ResultTy = NULL;
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std::vector<const Type*> ArgTys;
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bool IsVarArg = false;
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#define GET_INTRINSIC_GENERATOR
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#include "llvm/Intrinsics.gen"
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#undef GET_INTRINSIC_GENERATOR
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2007-04-09 06:11:23 +00:00
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return FunctionType::get(ResultTy, ArgTys, IsVarArg);
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2007-02-07 20:38:26 +00:00
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}
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2007-04-01 07:25:33 +00:00
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Function *Intrinsic::getDeclaration(Module *M, ID id, const Type **Tys,
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unsigned numTys) {
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2007-02-07 20:38:26 +00:00
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// There can never be multiple globals with the same name of different types,
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// because intrinsics must be a specific type.
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2007-04-01 07:25:33 +00:00
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return cast<Function>(M->getOrInsertFunction(getName(id, Tys, numTys),
|
|
|
|
getType(id, Tys, numTys)));
|
2007-02-07 20:38:26 +00:00
|
|
|
}
|
|
|
|
|
2004-10-12 04:32:37 +00:00
|
|
|
Value *IntrinsicInst::StripPointerCasts(Value *Ptr) {
|
2004-10-12 04:20:25 +00:00
|
|
|
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(Ptr)) {
|
2006-11-27 01:05:10 +00:00
|
|
|
if (CE->getOpcode() == Instruction::BitCast) {
|
2004-10-12 04:20:25 +00:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2006-11-27 01:05:10 +00:00
|
|
|
if (BitCastInst *CI = dyn_cast<BitCastInst>(Ptr)) {
|
2004-10-12 04:20:25 +00:00
|
|
|
if (isa<PointerType>(CI->getOperand(0)->getType()))
|
|
|
|
return StripPointerCasts(CI->getOperand(0));
|
|
|
|
} else if (GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(Ptr)) {
|
2004-10-12 04:32:37 +00:00
|
|
|
for (unsigned i = 1, e = GEP->getNumOperands(); i != e; ++i)
|
|
|
|
if (!isa<Constant>(GEP->getOperand(i)) ||
|
|
|
|
!cast<Constant>(GEP->getOperand(i))->isNullValue())
|
2004-10-12 04:20:25 +00:00
|
|
|
return Ptr;
|
2004-10-12 04:32:37 +00:00
|
|
|
return StripPointerCasts(GEP->getOperand(0));
|
2004-10-12 04:20:25 +00:00
|
|
|
}
|
|
|
|
return Ptr;
|
|
|
|
}
|
2003-05-08 03:47:33 +00:00
|
|
|
|
2004-07-17 23:50:19 +00:00
|
|
|
// vim: sw=2 ai
|