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#pragma once
#include <llvm/IR/IRBuilder.h>
#include <libdevcore/Common.h>
#include "BasicBlock.h"
namespace dev
{
namespace eth
{
namespace jit
{
class Compiler
{
public:
using ProgramCounter = uint64_t;
Compiler();
std::unique_ptr<llvm::Module> compile(bytesConstRef bytecode);
void dumpBasicBlockGraph(std::ostream& out);
private:
void createBasicBlocks(bytesConstRef bytecode);
void compileBasicBlock(BasicBlock& basicBlock, bytesConstRef bytecode, class Memory& memory, class Ext& ext, class GasMeter& gasMeter, llvm::BasicBlock* nextBasicBlock);
void linkBasicBlocks(class Stack& stack);
llvm::IRBuilder<> m_builder;
/**
* Maps a program counter pc to a basic block that starts at pc (if any).
*/
std::map<ProgramCounter, BasicBlock> basicBlocks;
/**
* Maps a pc at which there is a JUMP or JUMPI to the target block of the jump.
*/
std::map<ProgramCounter, llvm::BasicBlock*> m_directJumpTargets;
/**
* A list of possible blocks to which there may be indirect jumps.
*/
std::vector<BasicBlock*> m_indirectJumpTargets;
/// Stop basic block - terminates execution with STOP code (0)
llvm::BasicBlock* m_stopBB = nullptr;
/**
* Block with a jump table.
*/
std::unique_ptr<BasicBlock> m_jumpTableBlock;
/**
* Default destination for indirect jumps.
*/
std::unique_ptr<BasicBlock> m_badJumpBlock;
/// Main program function
llvm::Function* m_mainFunc = nullptr;
};
}
}
}