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83 lines
1.9 KiB
83 lines
1.9 KiB
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#pragma once
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#include <llvm/IR/IRBuilder.h>
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#include "Common.h"
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#include "BasicBlock.h"
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namespace dev
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{
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namespace eth
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{
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namespace jit
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{
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class Compiler
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{
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public:
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struct Options
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{
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/// Optimize stack operations between basic blocks
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bool optimizeStack = true;
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/// Rewrite switch instructions to sequences of branches
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bool rewriteSwitchToBranches = true;
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/// Dump CFG as a .dot file for graphviz
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bool dumpCFG = false;
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};
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using ProgramCounter = uint64_t;
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Compiler(Options const& _options);
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std::unique_ptr<llvm::Module> compile(bytes const& _bytecode, std::string const& _id);
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private:
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void createBasicBlocks(bytes const& _bytecode);
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void compileBasicBlock(BasicBlock& _basicBlock, bytes const& _bytecode, class RuntimeManager& _runtimeManager, class Arith256& _arith, class Memory& _memory, class Ext& _ext, class GasMeter& _gasMeter, llvm::BasicBlock* _nextBasicBlock);
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llvm::BasicBlock* getJumpTableBlock();
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llvm::BasicBlock* getBadJumpBlock();
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void removeDeadBlocks();
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/// Dumps basic block graph in graphviz format to a file, if option dumpCFG is enabled.
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void dumpCFGifRequired(std::string const& _dotfilePath);
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/// Dumps basic block graph in graphviz format to a stream.
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void dumpCFGtoStream(std::ostream& _out);
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/// Dumps all basic blocks to stderr. Useful in a debugging session.
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void dump();
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/// Compiler options
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Options const& m_options;
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/// Helper class for generating IR
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llvm::IRBuilder<> m_builder;
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/// Maps a program counter pc to a basic block that starts at pc (if any).
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std::map<ProgramCounter, BasicBlock> m_basicBlocks;
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/// Stop basic block - terminates execution with STOP code (0)
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llvm::BasicBlock* m_stopBB = nullptr;
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/// Block with a jump table.
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std::unique_ptr<BasicBlock> m_jumpTableBlock;
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/// Destination for invalid jumps
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std::unique_ptr<BasicBlock> m_badJumpBlock;
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/// Main program function
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llvm::Function* m_mainFunc = nullptr;
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};
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}
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}
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}
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