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75 lines
1.4 KiB
75 lines
1.4 KiB
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#pragma once
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#include <llvm/IR/IRBuilder.h>
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#include <libdevcore/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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using ProgramCounter = uint64_t;
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Compiler();
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std::unique_ptr<llvm::Module> compile(const bytes& bytecode);
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void dumpBasicBlockGraph(std::ostream& out);
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private:
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void createBasicBlocks(const bytes& bytecode);
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void compileBasicBlock(BasicBlock& basicBlock, const bytes& bytecode, class Memory& memory, class Ext& ext, class GasMeter& gasMeter, llvm::BasicBlock* nextBasicBlock);
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void linkBasicBlocks();
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llvm::IRBuilder<> m_builder;
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/**
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* Maps a program counter pc to a basic block that starts at pc (if any).
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*/
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std::map<ProgramCounter, BasicBlock> basicBlocks;
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/**
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* Maps a pc at which there is a JUMP or JUMPI to the target block of the jump.
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*/
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std::map<ProgramCounter, BasicBlock*> m_directJumpTargets;
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/**
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* A list of possible blocks to which there may be indirect jumps.
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*/
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std::vector<BasicBlock*> m_indirectJumpTargets;
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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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/**
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* Block with a jump table.
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*/
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std::unique_ptr<BasicBlock> m_jumpTableBlock;
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/**
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* Default destination for indirect jumps.
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*/
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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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