2001-06-06 20:29:01 +00:00
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//===-- Module.cpp - Implement the Module class ------------------*- C++ -*--=//
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//
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// This file implements the Module class for the VMCore library.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Module.h"
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2001-06-30 04:35:40 +00:00
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#include "llvm/Method.h"
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2001-09-10 07:58:01 +00:00
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#include "llvm/GlobalVariable.h"
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2001-06-30 04:35:40 +00:00
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#include "llvm/BasicBlock.h"
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#include "llvm/InstrTypes.h"
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#include "llvm/ValueHolderImpl.h"
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2001-07-23 17:46:59 +00:00
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#include "llvm/Support/STLExtras.h"
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2001-09-07 16:47:42 +00:00
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#include "llvm/Type.h"
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2001-10-13 06:58:40 +00:00
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#include <map>
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2001-06-06 20:29:01 +00:00
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// Instantiate Templates - This ugliness is the price we have to pay
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// for having a DefHolderImpl.h file seperate from DefHolder.h! :(
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//
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2001-09-10 07:58:01 +00:00
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template class ValueHolder<GlobalVariable, Module, Module>;
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2001-07-14 06:13:19 +00:00
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template class ValueHolder<Method, Module, Module>;
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2001-06-06 20:29:01 +00:00
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2001-10-13 06:58:40 +00:00
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// Define the GlobalValueRefMap as a struct that wraps a map so that we don't
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// have Module.h depend on <map>
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//
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struct GlobalValueRefMap : public map<GlobalValue*, ConstPoolPointerReference*>{
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};
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2001-06-06 20:29:01 +00:00
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Module::Module()
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2001-09-07 16:47:42 +00:00
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: Value(Type::VoidTy, Value::ModuleVal, ""), SymTabValue(this),
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2001-10-13 06:58:40 +00:00
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GlobalList(this, this), MethodList(this, this), GVRefMap(0) {
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2001-06-06 20:29:01 +00:00
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}
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Module::~Module() {
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dropAllReferences();
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2001-09-10 07:58:01 +00:00
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GlobalList.delete_all();
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GlobalList.setParent(0);
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2001-06-06 20:29:01 +00:00
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MethodList.delete_all();
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MethodList.setParent(0);
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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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// zero. Then everything is delete'd for real. Note that no operations are
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// valid on an object that has "dropped all references", except operator
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// delete.
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//
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void Module::dropAllReferences() {
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2001-10-13 06:58:40 +00:00
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for_each(MethodList.begin(), MethodList.end(),
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std::mem_fun(&Method::dropAllReferences));
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for_each(GlobalList.begin(), GlobalList.end(),
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std::mem_fun(&GlobalVariable::dropAllReferences));
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// If there are any GlobalVariable references still out there, nuke them now.
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// Since all references are hereby dropped, nothing could possibly reference
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// them still.
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if (GVRefMap) {
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for (GlobalValueRefMap::iterator I = GVRefMap->begin(), E = GVRefMap->end();
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I != E; ++I) {
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// Delete the ConstPoolPointerReference node...
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I->second->destroyConstant();
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}
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// Since the table is empty, we can now delete it...
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delete GVRefMap;
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}
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2001-06-06 20:29:01 +00:00
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}
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2001-06-30 04:35:40 +00:00
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// reduceApply - Apply the specified function to all of the methods in this
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// module. The result values are or'd together and the result is returned.
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//
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2001-09-10 07:58:01 +00:00
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bool Module::reduceApply(bool (*Func)(GlobalVariable*)) {
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return reduce_apply_bool(gbegin(), gend(), Func);
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}
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bool Module::reduceApply(bool (*Func)(const GlobalVariable*)) const {
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return reduce_apply_bool(gbegin(), gend(), Func);
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}
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2001-06-30 04:35:40 +00:00
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bool Module::reduceApply(bool (*Func)(Method*)) {
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return reduce_apply_bool(begin(), end(), Func);
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}
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bool Module::reduceApply(bool (*Func)(const Method*)) const {
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return reduce_apply_bool(begin(), end(), Func);
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}
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2001-10-13 06:58:40 +00:00
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// Accessor for the underlying GlobalValRefMap...
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ConstPoolPointerReference *Module::getConstPoolPointerReference(GlobalValue *V){
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// Create ref map lazily on demand...
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if (GVRefMap == 0) GVRefMap = new GlobalValueRefMap();
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GlobalValueRefMap::iterator I = GVRefMap->find(V);
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if (I != GVRefMap->end()) return I->second;
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ConstPoolPointerReference *Ref = new ConstPoolPointerReference(V);
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GVRefMap->insert(make_pair(V, Ref));
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return Ref;
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}
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void Module::mutateConstPoolPointerReference(GlobalValue *OldGV,
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GlobalValue *NewGV) {
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GlobalValueRefMap::iterator I = GVRefMap->find(OldGV);
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assert(I != GVRefMap->end() &&
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"mutateConstPoolPointerReference; OldGV not in table!");
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ConstPoolPointerReference *Ref = I->second;
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// Remove the old entry...
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GVRefMap->erase(I);
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// Insert the new entry...
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GVRefMap->insert(make_pair(NewGV, Ref));
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}
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