mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-29 23:12:55 +01:00
117 lines
3.8 KiB
C++
117 lines
3.8 KiB
C++
//===-- SlotTable.cpp - Abstract data type for slot numbers ---------------===//
|
|
//
|
|
// 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 an abstract data type for keeping track of slot numbers
|
|
// for bytecode and assembly writing or any other purpose.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Internal/SlotTable.h"
|
|
#include "llvm/Constants.h"
|
|
#include "llvm/Type.h"
|
|
#include "llvm/GlobalValue.h"
|
|
|
|
using namespace llvm;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// SlotTable Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
SlotTable::SlotTable( bool dont_insert_primitives ) {
|
|
if ( ! dont_insert_primitives )
|
|
this->insertPrimitives();
|
|
}
|
|
|
|
// empty - determine if the slot table is completely empty.
|
|
bool SlotTable::empty() const {
|
|
return vTable.empty() && vMap.empty() && tPlane.empty() && tMap.empty();
|
|
}
|
|
|
|
// getSlot - get the slot number associated with value Val
|
|
SlotTable::SlotNum SlotTable::getSlot(const Value* Val) const {
|
|
ValueMap::const_iterator I = vMap.find( Val );
|
|
if ( I != vMap.end() )
|
|
return I->second;
|
|
|
|
// Do not number ConstantPointerRef's at all. They are an abomination.
|
|
if (const ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(Val))
|
|
return this->getSlot(CPR->getValue());
|
|
|
|
return BAD_SLOT;
|
|
}
|
|
|
|
// getSlot - get the slot number associated with type Typ
|
|
SlotTable::SlotNum SlotTable::getSlot(const Type* Typ) const {
|
|
TypeMap::const_iterator I = tMap.find( Typ );
|
|
if ( I != tMap.end() )
|
|
return I->second;
|
|
|
|
return BAD_SLOT;
|
|
}
|
|
|
|
// clear - completely clear the slot table of all entries
|
|
void SlotTable::clear() {
|
|
vTable.clear();
|
|
vMap.clear();
|
|
tPlane.clear();
|
|
tMap.clear();
|
|
}
|
|
|
|
// resize - make sure there's enough room for specific number of planes
|
|
void SlotTable::resize( size_t new_size ) {
|
|
vTable.resize( new_size );
|
|
}
|
|
|
|
// insert - insert a Value into a specific plane
|
|
SlotTable::SlotNum SlotTable::insert( const Value* Val, PlaneNum plane ) {
|
|
if ( vTable.size() <= plane ) // Make sure we have the type plane allocated
|
|
vTable.resize(plane+1, ValuePlane());
|
|
|
|
// Insert node into table and map
|
|
SlotNum DestSlot = vMap[Val] = vTable[plane].size();
|
|
vTable[plane].push_back(Val);
|
|
return DestSlot;
|
|
}
|
|
|
|
// insert - insert a type
|
|
SlotTable::SlotNum SlotTable::insert( const Type* Typ ) {
|
|
// Insert node into table and map making sure that
|
|
// the same type isn't inserted twice.
|
|
assert(tMap.find(Typ) == tMap.end() && "Can't insert a Type multiple times");
|
|
SlotNum DestSlot = tMap[Typ] = tPlane.size();
|
|
tPlane.push_back(Typ);
|
|
return DestSlot;
|
|
}
|
|
|
|
// remove - remove a value from the slot table
|
|
SlotTable::SlotNum SlotTable::remove( const Value* Val, PlaneNum plane ) {
|
|
// FIXME: not implemented - not sure we need it
|
|
return BAD_SLOT;
|
|
}
|
|
|
|
// remove - remove a type from the slot table
|
|
SlotTable::SlotNum SlotTable::remove( const Type* Typ ) {
|
|
// FIXME: not implemented - not sure we need it
|
|
return BAD_SLOT;
|
|
}
|
|
|
|
// insertPrimitives - insert the primitive types for initialization
|
|
// Make sure that all of the primitive types are in the table
|
|
// and that their Primitive ID is equal to their slot #
|
|
void SlotTable::insertPrimitives() {
|
|
for (PlaneNum plane = 0; plane < Type::FirstDerivedTyID; ++plane) {
|
|
const Type* Ty = Type::getPrimitiveType((Type::PrimitiveID) plane);
|
|
assert(Ty && "Couldn't get primitive type id");
|
|
SlotNum slot = this->insert(Ty);
|
|
assert(slot == plane && "Type slot didn't match plane number");
|
|
}
|
|
}
|
|
|
|
// vim: sw=2
|