mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-18 12:29:21 +00:00
Several clean ups suggested by Chris: remove tabs, make SlotMachine do lazy
initialization so we don't scan large Modules/Functions needlessly, tighten up restrictions on what can be put in SlotMachine (no Constants that aren't GlobalValues). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13796 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -74,7 +74,7 @@ public:
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/// Return the slot number of the specified value in it's type
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/// plane. Its an error to ask for something not in the SlotMachine.
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/// Its an error to ask for a Type*
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unsigned getSlot(const Value *V) const;
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unsigned getSlot(const Value *V) ;
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/// @}
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/// @name Mutators
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@ -82,7 +82,7 @@ public:
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public:
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/// If you'd like to deal with a function instead of just a module, use
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/// this method to get its data into the SlotMachine.
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void incorporateFunction(const Function *F);
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void incorporateFunction(const Function *F) { TheFunction = F; }
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/// After calling incorporateFunction, use this method to remove the
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/// most recently incorporated function from the SlotMachine. This
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@ -93,6 +93,9 @@ public:
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/// @name Implementation Details
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/// @{
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private:
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/// This function does the actual initialization.
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inline void initialize();
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/// Values can be crammed into here at will. If they haven't
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/// been inserted already, they get inserted, otherwise they are ignored.
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/// Either way, the slot number for the Value* is returned.
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@ -107,6 +110,9 @@ private:
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/// and function declarations, but not the contents of those functions.
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void processModule();
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/// Add all of the functions arguments, basic blocks, and instructions
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void processFunction();
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SlotMachine(const SlotMachine &); // DO NOT IMPLEMENT
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void operator=(const SlotMachine &); // DO NOT IMPLEMENT
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@ -116,10 +122,10 @@ private:
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public:
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/// @brief The module for which we are holding slot numbers
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const Module *TheModule;
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const Module* TheModule;
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/// @brief Whether or not we have a function incorporated
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bool FunctionIncorporated;
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/// @brief The function for which we are holding slot numbers
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const Function* TheFunction;
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/// @brief The TypePlanes map for the module level data
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TypedPlanes mMap;
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@ -210,8 +216,8 @@ static void fillTypeNameTable(const Module *M,
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//
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const Type *Ty = cast<Type>(TI->second);
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if (!isa<PointerType>(Ty) ||
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!cast<PointerType>(Ty)->getElementType()->isPrimitiveType() ||
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isa<OpaqueType>(cast<PointerType>(Ty)->getElementType()))
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!cast<PointerType>(Ty)->getElementType()->isPrimitiveType() ||
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isa<OpaqueType>(cast<PointerType>(Ty)->getElementType()))
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TypeNames.insert(std::make_pair(Ty, getLLVMName(TI->first)));
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}
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}
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@ -494,7 +500,7 @@ static void WriteAsOperandInternal(std::ostream &Out, const Value *V,
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} else {
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int Slot;
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if (Machine) {
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Slot = Machine->getSlot(V);
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Slot = Machine->getSlot(V);
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} else {
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if (const Type *Ty = dyn_cast<Type>(V)) {
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Out << Ty->getDescription();
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@ -504,8 +510,8 @@ static void WriteAsOperandInternal(std::ostream &Out, const Value *V,
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Machine = createSlotMachine(V);
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if (Machine == 0) { Out << "BAD VALUE TYPE!"; return; }
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Slot = Machine->getSlot(V);
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delete Machine;
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Slot = Machine->getSlot(V);
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delete Machine;
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}
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Out << "%" << Slot;
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}
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@ -639,7 +645,7 @@ std::ostream &AssemblyWriter::printTypeAtLeastOneLevel(const Type *Ty) {
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void AssemblyWriter::writeOperand(const Value *Operand, bool PrintType,
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bool PrintName) {
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bool PrintName) {
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if (PrintType) { *Out << " "; printType(Operand->getType()); }
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WriteAsOperandInternal(*Out, Operand, PrintName, TypeNames, &Machine);
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}
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@ -719,7 +725,7 @@ void AssemblyWriter::printSymbolTable(const SymbolTable &ST) {
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for (; VI != VE; ++VI) {
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const Value *V = VI->second;
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if (const Constant *CPV = dyn_cast<Constant>(V)) {
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printConstant(CPV);
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printConstant(CPV);
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}
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}
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}
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@ -1168,26 +1174,30 @@ void CachedWriter::setStream(std::ostream &os) {
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// Module level constructor. Causes the contents of the Module (sans functions)
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// to be added to the slot table.
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SlotMachine::SlotMachine(const Module *M)
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: TheModule(M)
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, FunctionIncorporated(false)
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: TheModule(M) ///< Saved for lazy initialization.
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, TheFunction(0)
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, mMap()
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, fMap()
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{
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if ( M != 0 )
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processModule();
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}
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// Function level constructor. Causes the contents of the Module and the one
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// function provided to be added to the slot table.
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SlotMachine::SlotMachine(const Function *F )
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: TheModule( F ? F->getParent() : 0 )
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, FunctionIncorporated(true)
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: TheModule( F ? F->getParent() : 0 ) ///< Saved for lazy initialization
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, TheFunction(F) ///< Saved for lazy initialization
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, mMap()
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, fMap()
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{
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if ( TheModule ) {
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processModule(); // Process module level stuff
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incorporateFunction(F); // Start out in incorporated state
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}
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inline void SlotMachine::initialize(void) {
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if ( TheModule) {
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processModule();
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TheModule = 0; ///< Prevent re-processing next time we're called.
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}
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if ( TheFunction ) {
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processFunction();
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}
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}
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@ -1206,32 +1216,24 @@ void SlotMachine::processModule() {
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I != E; ++I)
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createSlot(I);
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// Add all of the module level constants used as initializers
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for (Module::const_giterator I = TheModule->gbegin(), E = TheModule->gend();
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I != E; ++I)
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if (I->hasInitializer())
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createSlot(I->getInitializer());
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SC_DEBUG("end processModule!\n");
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}
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// Incorporate the arguments, basic blocks, and instructions of a function.
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// This is the *only* way to get the FunctionIncorporated flag set.
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void SlotMachine::incorporateFunction(const Function *F) {
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// Process the arguments, basic blocks, and instructions of a function.
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void SlotMachine::processFunction() {
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SC_DEBUG("begin processFunction!\n");
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FunctionIncorporated = true;
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// Add all the function arguments
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for(Function::const_aiterator AI = F->abegin(),
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AE = F->aend(); AI != AE; ++AI)
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for(Function::const_aiterator AI = TheFunction->abegin(),
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AE = TheFunction->aend(); AI != AE; ++AI)
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createSlot(AI);
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SC_DEBUG("Inserting Instructions:\n");
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// Add all of the basic blocks and instructions
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for (Function::const_iterator BB = F->begin(), E = F->end(); BB != E; ++BB) {
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for (Function::const_iterator BB = TheFunction->begin(),
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E = TheFunction->end(); BB != E; ++BB) {
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createSlot(BB);
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for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E; ++I) {
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createSlot(I);
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@ -1242,20 +1244,27 @@ void SlotMachine::incorporateFunction(const Function *F) {
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}
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// Clean up after incorporating a function. This is the only way
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// (other than construction) to get the FunctionIncorporated flag cleared.
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// to get out of the function incorporation state that affects the
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// getSlot/createSlot lock. Function incorporation state is indicated
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// by TheFunction != 0.
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void SlotMachine::purgeFunction() {
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SC_DEBUG("begin purgeFunction!\n");
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fMap.clear(); // Simply discard the function level map
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FunctionIncorporated = false;
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TheFunction = 0;
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SC_DEBUG("end purgeFunction!\n");
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}
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/// Get the slot number for a value. This function will assert if you
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/// ask for a Value that hasn't previously been inserted with createSlot.
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/// Types are forbidden because Type does not inherit from Value (any more).
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unsigned SlotMachine::getSlot(const Value *V) const {
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unsigned SlotMachine::getSlot(const Value *V) {
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assert( V && "Can't get slot for null Value" );
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assert( !isa<Type>(V) && "Can't get slot for a type" );
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assert(!isa<Constant>(V) || isa<GlobalValue>(V) &&
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"Can't insert a non-GlobalValue Constant into SlotMachine");
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// Check for uninitialized state and do lazy initialization
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this->initialize();
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// Do not number CPR's at all. They are an abomination
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if ( const ConstantPointerRef* CPR = dyn_cast<ConstantPointerRef>(V) )
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@ -1267,7 +1276,7 @@ unsigned SlotMachine::getSlot(const Value *V) const {
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// Find the type plane in the module map
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TypedPlanes::const_iterator MI = mMap.find(VTy);
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if ( FunctionIncorporated ) {
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if ( TheFunction ) {
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// Lookup the type in the function map too
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TypedPlanes::const_iterator FI = fMap.find(VTy);
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// If there is a corresponding type plane in the function map
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@ -1276,19 +1285,19 @@ unsigned SlotMachine::getSlot(const Value *V) const {
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ValueMap::const_iterator FVI = FI->second.map.find(V);
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// If the value doesn't exist in the function map
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if ( FVI == FI->second.map.end() ) {
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// Look up the value in the module map
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ValueMap::const_iterator MVI = MI->second.map.find(V);
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// If we didn't find it, it wasn't inserted
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assert( MVI != MI->second.map.end() && "Value not found");
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// We found it only at the module level
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return MVI->second;
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// Look up the value in the module map
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ValueMap::const_iterator MVI = MI->second.map.find(V);
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// If we didn't find it, it wasn't inserted
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assert( MVI != MI->second.map.end() && "Value not found");
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// We found it only at the module level
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return MVI->second;
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// else the value exists in the function map
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} else {
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// Return the slot number as the module's contribution to
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// the type plane plus the index in the function's contribution
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// to the type plane.
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return MI->second.next_slot + FVI->second;
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// Return the slot number as the module's contribution to
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// the type plane plus the index in the function's contribution
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// to the type plane.
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return MI->second.next_slot + FVI->second;
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}
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// else there is not a corresponding type plane in the function map
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@ -1304,7 +1313,7 @@ unsigned SlotMachine::getSlot(const Value *V) const {
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}
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}
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// N.B. Can only get here if !FunctionIncorporated
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// N.B. Can only get here if !TheFunction
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// Make sure the type plane exists
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assert( MI != mMap.end() && "No such type plane!" );
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@ -1323,6 +1332,8 @@ unsigned SlotMachine::getSlot(const Value *V) const {
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unsigned SlotMachine::createSlot(const Value *V) {
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assert( V && "Can't insert a null Value to SlotMachine");
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assert( !isa<Type>(V) && "Can't insert a Type into SlotMachine");
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assert(!isa<Constant>(V) || isa<GlobalValue>(V) &&
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"Can't insert a non-GlobalValue Constant into SlotMachine");
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const Type* VTy = V->getType();
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@ -1332,7 +1343,7 @@ unsigned SlotMachine::createSlot(const Value *V) {
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// Look up the type plane for the Value's type from the module map
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TypedPlanes::const_iterator MI = mMap.find(VTy);
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if ( FunctionIncorporated ) {
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if ( TheFunction ) {
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// Get the type plane for the Value's type from the function map
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TypedPlanes::const_iterator FI = fMap.find(VTy);
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// If there is a corresponding type plane in the function map
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@ -1341,50 +1352,50 @@ unsigned SlotMachine::createSlot(const Value *V) {
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ValueMap::const_iterator FVI = FI->second.map.find(V);
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// If the value doesn't exist in the function map
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if ( FVI == FI->second.map.end() ) {
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// If there is no corresponding type plane in the module map
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if ( MI == mMap.end() )
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return insertValue(V);
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// Look up the value in the module map
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ValueMap::const_iterator MVI = MI->second.map.find(V);
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// If we didn't find it, it wasn't inserted
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if ( MVI == MI->second.map.end() )
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return insertValue(V);
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else
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// We found it only at the module level
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return MVI->second;
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// If there is no corresponding type plane in the module map
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if ( MI == mMap.end() )
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return insertValue(V);
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// Look up the value in the module map
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ValueMap::const_iterator MVI = MI->second.map.find(V);
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// If we didn't find it, it wasn't inserted
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if ( MVI == MI->second.map.end() )
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return insertValue(V);
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else
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// We found it only at the module level
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return MVI->second;
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// else the value exists in the function map
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} else {
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if ( MI == mMap.end() )
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return FVI->second;
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else
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// Return the slot number as the module's contribution to
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// the type plane plus the index in the function's contribution
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// to the type plane.
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return MI->second.next_slot + FVI->second;
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if ( MI == mMap.end() )
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return FVI->second;
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else
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// Return the slot number as the module's contribution to
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// the type plane plus the index in the function's contribution
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// to the type plane.
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return MI->second.next_slot + FVI->second;
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}
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// else there is not a corresponding type plane in the function map
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} else {
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// If the type plane doesn't exists at the module level
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if ( MI == mMap.end() ) {
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return insertValue(V);
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return insertValue(V);
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// else type plane exists at the module level, examine it
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} else {
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// Look up the value in the module's map
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ValueMap::const_iterator MVI = MI->second.map.find(V);
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// If we didn't find it there either
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if ( MVI == MI->second.map.end() )
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// Return the slot number as the module's contribution to
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// the type plane plus the index of the function map insertion.
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return MI->second.next_slot + insertValue(V);
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else
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return MVI->second;
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// Look up the value in the module's map
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ValueMap::const_iterator MVI = MI->second.map.find(V);
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// If we didn't find it there either
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if ( MVI == MI->second.map.end() )
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// Return the slot number as the module's contribution to
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// the type plane plus the index of the function map insertion.
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return MI->second.next_slot + insertValue(V);
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else
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return MVI->second;
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}
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}
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}
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// N.B. Can only get here if !FunctionIncorporated
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// N.B. Can only get here if !TheFunction
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// If the module map's type plane is not for the Value's type
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if ( MI != mMap.end() ) {
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@ -1403,28 +1414,20 @@ unsigned SlotMachine::createSlot(const Value *V) {
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unsigned SlotMachine::insertValue(const Value *V ) {
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assert(V && "Can't insert a null Value into SlotMachine!");
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assert(!isa<Type>(V) && "Can't insert a Type into SlotMachine!");
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assert(!isa<Constant>(V) || isa<GlobalValue>(V) &&
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"Can't insert a non-GlobalValue Constant into SlotMachine");
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// If this value does not contribute to a plane (is void or constant)
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// If this value does not contribute to a plane (is void)
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// or if the value already has a name then ignore it.
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if (V->getType() == Type::VoidTy || // Ignore void type nodes
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(V->hasName() || isa<Constant>(V)) ) {
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if (V->getType() == Type::VoidTy || V->hasName() ) {
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SC_DEBUG("ignored value " << *V << "\n");
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return 0; // FIXME: Wrong return value
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}
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if (!isa<GlobalValue>(V)) // Initializers for globals are handled explicitly
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if (const Constant *C = dyn_cast<Constant>(V)) {
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// This makes sure that if a constant has uses (for example an array of
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// const ints), that they are inserted also.
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for (User::const_op_iterator I = C->op_begin(), E = C->op_end();
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I != E; ++I)
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createSlot(*I);
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}
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const Type *VTy = V->getType();
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unsigned DestSlot = 0;
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if ( FunctionIncorporated ) {
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if ( TheFunction ) {
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TypedPlanes::iterator I = fMap.find( VTy );
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if ( I == fMap.end() )
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I = fMap.insert(std::make_pair(VTy,Plane())).first;
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@ -1437,7 +1440,7 @@ unsigned SlotMachine::insertValue(const Value *V ) {
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}
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SC_DEBUG(" Inserting value [" << VTy << "] = " << V << " slot=" <<
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DestSlot << " [");
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DestSlot << " [");
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// G = Global, C = Constant, T = Type, F = Function, o = other
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SC_DEBUG((isa<GlobalVariable>(V) ? "G" : (isa<Constant>(V) ? "C" :
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(isa<Function>(V) ? "F" : "o"))));
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