You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
76 lines
1.8 KiB
76 lines
1.8 KiB
|
|
#include <vector>
|
|
|
|
#include <llvm/IR/BasicBlock.h>
|
|
|
|
namespace evmcc
|
|
{
|
|
|
|
using ProgramCounter = uint64_t; // TODO: Rename
|
|
|
|
class BasicBlock
|
|
{
|
|
public:
|
|
class Stack
|
|
{
|
|
public:
|
|
/// Pushes value on stack
|
|
void push(llvm::Value* _value);
|
|
|
|
/// Pops and returns top value
|
|
llvm::Value* pop();
|
|
|
|
/// Gets _index'th value from top (counting from 0)
|
|
llvm::Value* get(size_t _index);
|
|
|
|
/// Duplicates _index'th value on stack.
|
|
void dup(size_t _index);
|
|
|
|
/// Swaps _index'th value on stack with a value on stack top.
|
|
/// @param _index Index of value to be swaped. Cannot be 0.
|
|
void swap(size_t _index);
|
|
|
|
/// Size of the stack
|
|
size_t size() const { return m_backend.size(); }
|
|
|
|
private:
|
|
Stack(llvm::BasicBlock* _llvmBB) : m_llvmBB(_llvmBB) {}
|
|
Stack(const Stack&) = delete;
|
|
void operator=(const Stack&) = delete;
|
|
friend BasicBlock;
|
|
|
|
private:
|
|
std::vector<llvm::Value*> m_backend;
|
|
|
|
/// LLVM Basic Block where phi nodes are inserted
|
|
llvm::BasicBlock* const m_llvmBB;
|
|
};
|
|
|
|
/// Basic block name prefix. The rest is beging instruction index.
|
|
static const char* NamePrefix;
|
|
|
|
explicit BasicBlock(ProgramCounter _beginInstIdx, ProgramCounter _endInstIdx, llvm::Function* _mainFunc);
|
|
explicit BasicBlock(std::string _name, llvm::Function* _mainFunc);
|
|
|
|
BasicBlock(const BasicBlock&) = delete;
|
|
void operator=(const BasicBlock&) = delete;
|
|
|
|
operator llvm::BasicBlock*() { return m_llvmBB; }
|
|
llvm::BasicBlock* llvm() { return m_llvmBB; }
|
|
|
|
Stack& getStack() { return m_stack; }
|
|
|
|
ProgramCounter begin() { return m_beginInstIdx; }
|
|
ProgramCounter end() { return m_endInstIdx; }
|
|
|
|
private:
|
|
ProgramCounter const m_beginInstIdx;
|
|
ProgramCounter const m_endInstIdx;
|
|
llvm::BasicBlock* const m_llvmBB;
|
|
|
|
/// Basic black state vector (stack) - current/end values and their positions on stack
|
|
/// @internal Must be AFTER m_llvmBB
|
|
Stack m_stack;
|
|
};
|
|
|
|
}
|
|
|