mirror of
https://github.com/c64scene-ar/llvm-6502.git
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cbb22e218e
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14122 91177308-0d34-0410-b5e6-96231b3b80d8
290 lines
8.4 KiB
C++
290 lines
8.4 KiB
C++
//===-- BytecodeHandler.cpp - Parsing Handler -------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by Reid Spencer and is distributed under the
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// University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This header file defines the BytecodeHandler class that gets called by the
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// AbstractBytecodeParser when parsing events occur.
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//
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//===----------------------------------------------------------------------===//
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#include "AnalyzerInternals.h"
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#include <iostream>
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using namespace llvm;
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namespace {
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class AnalyzerHandler : public BytecodeHandler {
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BytecodeAnalysis& bca;
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BytecodeAnalysis::BytecodeFunctionInfo* currFunc;
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public:
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AnalyzerHandler(BytecodeAnalysis& TheBca)
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: bca(TheBca)
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, currFunc(0)
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{ }
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virtual bool handleError(const std::string& str ) {
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return false;
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}
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virtual void handleStart() {
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bca.ModuleId.clear();
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bca.numBlocks = 0;
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bca.numTypes = 0;
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bca.numValues = 0;
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bca.numFunctions = 0;
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bca.numConstants = 0;
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bca.numGlobalVars = 0;
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bca.numInstructions = 0;
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bca.numBasicBlocks = 0;
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bca.numOperands = 0;
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bca.numCmpctnTables = 0;
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bca.numSymTab = 0;
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bca.maxTypeSlot = 0;
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bca.maxValueSlot = 0;
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bca.numAlignment = 0;
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bca.fileDensity = 0.0;
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bca.globalsDensity = 0.0;
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bca.functionDensity = 0.0;
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bca.vbrCount32 = 0;
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bca.vbrCount64 = 0;
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bca.vbrCompBytes = 0;
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bca.vbrExpdBytes = 0;
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bca.FunctionInfo.clear();
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bca.BytecodeDump.clear();
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bca.BlockSizes[BytecodeFormat::Module] = 0;
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bca.BlockSizes[BytecodeFormat::Function] = 0;
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bca.BlockSizes[BytecodeFormat::ConstantPool] = 0;
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bca.BlockSizes[BytecodeFormat::SymbolTable] = 0;
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bca.BlockSizes[BytecodeFormat::ModuleGlobalInfo] = 0;
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bca.BlockSizes[BytecodeFormat::GlobalTypePlane] = 0;
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bca.BlockSizes[BytecodeFormat::BasicBlock] = 0;
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bca.BlockSizes[BytecodeFormat::InstructionList] = 0;
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bca.BlockSizes[BytecodeFormat::CompactionTable] = 0;
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}
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virtual void handleFinish() {
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bca.fileDensity = double(bca.byteSize) / double( bca.numTypes + bca.numValues );
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double globalSize = 0.0;
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globalSize += double(bca.BlockSizes[BytecodeFormat::ConstantPool]);
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globalSize += double(bca.BlockSizes[BytecodeFormat::ModuleGlobalInfo]);
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globalSize += double(bca.BlockSizes[BytecodeFormat::GlobalTypePlane]);
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bca.globalsDensity = globalSize / double( bca.numTypes + bca.numConstants +
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bca.numGlobalVars );
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bca.functionDensity = double(bca.BlockSizes[BytecodeFormat::Function]) /
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double(bca.numFunctions);
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}
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virtual void handleModuleBegin(const std::string& id) {
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bca.ModuleId = id;
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}
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virtual void handleModuleEnd(const std::string& id) { }
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virtual void handleVersionInfo(
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unsigned char RevisionNum, ///< Byte code revision number
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Module::Endianness Endianness, ///< Endianness indicator
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Module::PointerSize PointerSize ///< PointerSize indicator
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) { }
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virtual void handleModuleGlobalsBegin(unsigned size) { }
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virtual void handleGlobalVariable(
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const Type* ElemType, ///< The type of the global variable
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bool isConstant, ///< Whether the GV is constant or not
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GlobalValue::LinkageTypes ///< The linkage type of the GV
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) {
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bca.numGlobalVars++;
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bca.numValues++;
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}
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virtual void handleInitializedGV(
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const Type* ElemType, ///< The type of the global variable
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bool isConstant, ///< Whether the GV is constant or not
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GlobalValue::LinkageTypes,///< The linkage type of the GV
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unsigned initSlot ///< Slot number of GV's initializer
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) {
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bca.numGlobalVars++;
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bca.numValues++;
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}
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virtual void handleType( const Type* Ty ) { bca.numTypes++; }
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virtual void handleFunctionDeclaration(
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Function* Func, ///< The function
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const FunctionType* FuncType ///< The type of the function
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) {
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bca.numFunctions++;
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bca.numValues++;
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}
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virtual void handleModuleGlobalsEnd() { }
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virtual void handleCompactionTableBegin() { }
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virtual void handleCompactionTablePlane( unsigned Ty, unsigned NumEntries) {
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bca.numCmpctnTables++;
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}
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virtual void handleCompactionTableType( unsigned i, unsigned TypSlot,
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const Type* ) {}
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virtual void handleCompactionTableValue(
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unsigned i,
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unsigned ValSlot,
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const Type* ) { }
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virtual void handleCompactionTableEnd() { }
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virtual void handleSymbolTableBegin() { bca.numSymTab++; }
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virtual void handleSymbolTablePlane( unsigned Ty, unsigned NumEntries,
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const Type* Typ) { }
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virtual void handleSymbolTableType( unsigned i, unsigned slot,
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const std::string& name ) { }
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virtual void handleSymbolTableValue( unsigned i, unsigned slot,
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const std::string& name ) { }
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virtual void handleSymbolTableEnd() { }
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virtual void handleFunctionBegin( Function* Func, unsigned Size) {
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const FunctionType* FType =
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cast<FunctionType>(Func->getType()->getElementType());
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currFunc = &bca.FunctionInfo[Func];
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currFunc->description = FType->getDescription();
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currFunc->name = Func->getName();
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currFunc->byteSize = Size;
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currFunc->numInstructions = 0;
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currFunc->numBasicBlocks = 0;
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currFunc->numPhis = 0;
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currFunc->numOperands = 0;
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currFunc->density = 0.0;
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currFunc->vbrCount32 = 0;
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currFunc->vbrCount64 = 0;
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currFunc->vbrCompBytes = 0;
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currFunc->vbrExpdBytes = 0;
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}
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virtual void handleFunctionEnd( Function* Func) {
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currFunc->density = double(currFunc->byteSize) /
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double(currFunc->numInstructions+currFunc->numBasicBlocks);
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}
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virtual void handleBasicBlockBegin( unsigned blocknum) {
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bca.numBasicBlocks++;
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bca.numValues++;
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if ( currFunc ) currFunc->numBasicBlocks++;
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}
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virtual bool handleInstruction( unsigned Opcode, const Type* iType,
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std::vector<unsigned>& Operands, unsigned Size) {
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bca.numInstructions++;
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bca.numValues++;
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bca.numOperands += Operands.size();
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if ( currFunc ) {
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currFunc->numInstructions++;
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if ( Instruction::isPhiNode(Opcode) ) currFunc->numPhis++;
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}
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return Instruction::isTerminator(Opcode);
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}
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virtual void handleBasicBlockEnd(unsigned blocknum) { }
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virtual void handleGlobalConstantsBegin() { }
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virtual void handleConstantExpression( unsigned Opcode, const Type* Typ,
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std::vector<std::pair<const Type*,unsigned> > ArgVec ) {
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bca.numConstants++;
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bca.numValues++;
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}
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virtual void handleConstantValue( Constant * c ) {
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bca.numConstants++;
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bca.numValues++;
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}
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virtual void handleConstantArray( const ArrayType* AT,
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std::vector<unsigned>& Elements ) {
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bca.numConstants++;
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bca.numValues++;
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}
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virtual void handleConstantStruct(
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const StructType* ST,
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std::vector<unsigned>& ElementSlots)
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{
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bca.numConstants++;
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bca.numValues++;
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}
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virtual void handleConstantPointer( const PointerType* PT, unsigned Slot) {
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bca.numConstants++;
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bca.numValues++;
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}
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virtual void handleConstantString( const ConstantArray* CA ) {
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bca.numConstants++;
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bca.numValues++;
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}
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virtual void handleGlobalConstantsEnd() { }
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virtual void handleAlignment(unsigned numBytes) {
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bca.numAlignment += numBytes;
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}
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virtual void handleBlock(
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unsigned BType, const unsigned char* StartPtr, unsigned Size) {
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bca.numBlocks++;
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bca.BlockSizes[llvm::BytecodeFormat::FileBlockIDs(BType)] += Size;
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}
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virtual void handleVBR32(unsigned Size ) {
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bca.vbrCount32++;
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bca.vbrCompBytes += Size;
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bca.vbrExpdBytes += sizeof(uint32_t);
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if (currFunc) {
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currFunc->vbrCount32++;
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currFunc->vbrCompBytes += Size;
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currFunc->vbrExpdBytes += sizeof(uint32_t);
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}
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}
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virtual void handleVBR64(unsigned Size ) {
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bca.vbrCount64++;
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bca.vbrCompBytes += Size;
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bca.vbrExpdBytes += sizeof(uint64_t);
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if ( currFunc ) {
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currFunc->vbrCount64++;
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currFunc->vbrCompBytes += Size;
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currFunc->vbrExpdBytes += sizeof(uint64_t);
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}
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}
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};
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}
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void llvm::BytecodeAnalyzer::AnalyzeBytecode(
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const unsigned char *Buf,
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unsigned Length,
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BytecodeAnalysis& bca,
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const std::string &ModuleID
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)
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{
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bca.byteSize = Length;
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AnalyzerHandler TheHandler(bca);
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AbstractBytecodeParser TheParser(&TheHandler, true, true, true);
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TheParser.ParseBytecode( Buf, Length, ModuleID );
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TheParser.ParseAllFunctionBodies();
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}
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// vim: sw=2
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