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* Add support for Module specific constants

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* Add proper support for ConstPoolPointerReference's


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@771 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2001-10-13 06:58:40 +00:00
parent b1726accb2
commit dd6dfbc8cc
1 changed files with 55 additions and 4 deletions
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59
lib/VMCore/Module.cpp
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@ -12,6 +12,7 @@
#include "llvm/ValueHolderImpl.h"
#include "llvm/Support/STLExtras.h"
#include "llvm/Type.h"
#include <map>
// Instantiate Templates - This ugliness is the price we have to pay
// for having a DefHolderImpl.h file seperate from DefHolder.h! :(
@ -19,9 +20,16 @@
template class ValueHolder<GlobalVariable, Module, Module>;
template class ValueHolder<Method, Module, Module>;
// Define the GlobalValueRefMap as a struct that wraps a map so that we don't
// have Module.h depend on <map>
//
struct GlobalValueRefMap : public map<GlobalValue*, ConstPoolPointerReference*>{
};
Module::Module()
: Value(Type::VoidTy, Value::ModuleVal, ""), SymTabValue(this),
GlobalList(this, this), MethodList(this, this) {
GlobalList(this, this), MethodList(this, this), GVRefMap(0) {
}
Module::~Module() {
@ -42,9 +50,25 @@ Module::~Module() {
// delete.
//
void Module::dropAllReferences() {
MethodListType::iterator MI = MethodList.begin();
for (; MI != MethodList.end(); ++MI)
(*MI)->dropAllReferences();
for_each(MethodList.begin(), MethodList.end(),
std::mem_fun(&Method::dropAllReferences));
for_each(GlobalList.begin(), GlobalList.end(),
std::mem_fun(&GlobalVariable::dropAllReferences));
// If there are any GlobalVariable references still out there, nuke them now.
// Since all references are hereby dropped, nothing could possibly reference
// them still.
if (GVRefMap) {
for (GlobalValueRefMap::iterator I = GVRefMap->begin(), E = GVRefMap->end();
I != E; ++I) {
// Delete the ConstPoolPointerReference node...
I->second->destroyConstant();
}
// Since the table is empty, we can now delete it...
delete GVRefMap;
}
}
// reduceApply - Apply the specified function to all of the methods in this
@ -63,3 +87,30 @@ bool Module::reduceApply(bool (*Func)(const Method*)) const {
return reduce_apply_bool(begin(), end(), Func);
}
// Accessor for the underlying GlobalValRefMap...
ConstPoolPointerReference *Module::getConstPoolPointerReference(GlobalValue *V){
// Create ref map lazily on demand...
if (GVRefMap == 0) GVRefMap = new GlobalValueRefMap();
GlobalValueRefMap::iterator I = GVRefMap->find(V);
if (I != GVRefMap->end()) return I->second;
ConstPoolPointerReference *Ref = new ConstPoolPointerReference(V);
GVRefMap->insert(make_pair(V, Ref));
return Ref;
}
void Module::mutateConstPoolPointerReference(GlobalValue *OldGV,
GlobalValue *NewGV) {
GlobalValueRefMap::iterator I = GVRefMap->find(OldGV);
assert(I != GVRefMap->end() &&
"mutateConstPoolPointerReference; OldGV not in table!");
ConstPoolPointerReference *Ref = I->second;
// Remove the old entry...
GVRefMap->erase(I);
// Insert the new entry...
GVRefMap->insert(make_pair(NewGV, Ref));
}