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compiler.h
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#pragma once
#include <cstdint>
#include <iostream>
#include <set>
#include <string>
#include <vector>
#include <runtime.h>
#include <semantics.h>
#include <llvm/ADT/APFloat.h>
#include <llvm/ADT/STLExtras.h>
#include <llvm/IR/BasicBlock.h>
#include <llvm/IR/Constants.h>
#include <llvm/IR/DerivedTypes.h>
#include <llvm/IR/Function.h>
#include <llvm/IR/IRBuilder.h>
#include <llvm/IR/LLVMContext.h>
#include <llvm/IR/Module.h>
#include <llvm/IR/Type.h>
#include <llvm/IR/Verifier.h>
namespace bytecode {
enum class op_code_t {
band_, // bitwise and
bneg_, // bitwise negation
getfield_, // get a field value of an object objectref
goto_, // goes to another instruction at branchoffset
goto_if_false_, // if value is false (0), goes to another instruction at branchoffset
iadd_, // add two ints
iaload_, // load an int from an array
iastore_, // store an int into an array
ilt_, // less than
imul_, // multiply two integers
invoke_, // invoke instance method on object objectref and puts result on the stack
isub_, // subtract two integers
load_, // load a reference onto the stack from a local variable #index
ldc_, // push a constant onto the stack
length_, // array length
new_, // create new object of type identified by class reference
newarray_, // create new array of integers
putfield_, // set field to value in an object objectref
print_, // print integer
return_, // return from method
store_, // store value into variable
};
struct instruction_t {
op_code_t op_code;
long operand, operand2;
std::string as_str()
{
switch (op_code) {
case op_code_t::band_: return "band";
case op_code_t::bneg_: return "bneg";
case op_code_t::getfield_: return "getfield " + std::to_string(operand);
case op_code_t::goto_: return "goto " + std::to_string(operand);
case op_code_t::goto_if_false_: return "goto_if_false " + std::to_string(operand);
case op_code_t::iadd_: return "iadd";
case op_code_t::iaload_: return "iaload";
case op_code_t::iastore_: return "iastore";
case op_code_t::ilt_: return "ilt";
case op_code_t::imul_: return "imul";
case op_code_t::invoke_:
return "invoke " + std::to_string(operand) + " " + std::to_string(operand2);
case op_code_t::isub_: return "isub";
case op_code_t::load_: return "load " + std::to_string(operand);
case op_code_t::ldc_: return "ldc " + std::to_string(operand);
case op_code_t::length_: return "length";
case op_code_t::new_: return "new " + std::to_string(operand);
case op_code_t::newarray_: return "newarray";
case op_code_t::putfield_: return "putfield " + std::to_string(operand);
case op_code_t::print_: return "print";
case op_code_t::return_: return "return";
case op_code_t::store_: return "store " + std::to_string(operand);
default: std::cerr << "Unknown op code" << std::endl; exit(1);
}
}
};
} // namespace bytecode
namespace compiler {
struct method_layout_t;
struct class_layout_t {
std::string parent;
std::string name;
std::vector<std::string> fields;
std::vector<std::pair<std::string, std::string>> vtbl;
std::vector<method_layout_t *> vtable;
};
enum class bb_state_t {
fresh,
jmp_target_computed,
linearized,
};
struct basic_block_t {
static size_t bb_num;
static size_t bb_inst_num;
size_t bb_id;
size_t bb_inst_start;
bb_state_t bb_state;
std::vector<bytecode::instruction_t> instructions;
basic_block_t *then_branch;
basic_block_t *else_branch;
basic_block_t()
: bb_state(bb_state_t::fresh), then_branch(nullptr), else_branch(nullptr)
{
bb_id = bb_num++;
}
void compute_jmp_targets_(size_t n, std::set<basic_block_t *> &visited);
void compute_jmp_targets(size_t n);
void fix_goto_(size_t n, std::set<basic_block_t *> &visited);
void fix_goto(size_t n);
void try_linearize_(std::vector<bytecode::instruction_t> &vi, size_t n,
std::set<basic_block_t *> &visited);
void try_linearize(std::vector<bytecode::instruction_t> &vi, size_t n);
};
struct method_layout_t {
std::pair<std::string, std::string> method_name;
std::vector<std::string> args;
std::vector<std::string> locals;
std::vector<bytecode::instruction_t> instructions;
};
class layout_visitor_t : public visitor::visitor_t {
public:
std::vector<class_layout_t> classes;
std::vector<method_layout_t> methods;
std::string current_class;
void visit(parser::goal_t *node) override;
void visit(parser::main_class_t *node) override;
void visit(parser::class_decl_t *node) override;
void visit(parser::var_decl_t *node) override{};
void visit(parser::method_decl_t *node) override;
void visit(parser::type_t *node) override{};
void visit(parser::statement_t *node) override{};
void visit(parser::block_statement_t *node) override{};
void visit(parser::if_statement_t *node) override{};
void visit(parser::while_statement_t *node) override{};
void visit(parser::print_statement_t *node) override{};
void visit(parser::assign_statement_t *node) override{};
void visit(parser::array_assign_statement_t *node) override{};
void visit(parser::expression_t *node) override{};
void visit(parser::binary_expression_t *node) override{};
void visit(parser::array_index_expression_t *node) override{};
void visit(parser::array_length_expression_t *node) override{};
void visit(parser::method_call_expression_t *node) override{};
void visit(parser::integer_literal_expression_t *node) override{};
void visit(parser::true_literal_expression_t *node) override{};
void visit(parser::false_literal_expression_t *node) override{};
void visit(parser::identifier_expression_t *node) override{};
void visit(parser::this_expression_t *node) override{};
void visit(parser::new_integer_array_expression_t *node) override{};
void visit(parser::new_object_expression_t *node) override{};
void visit(parser::not_expression_t *node) override{};
void visit(parser::parentheses_expression_t *node) override{};
};
class vt_visitor_t : public visitor::visitor_t {
public:
std::vector<class_layout_t> classes;
std::vector<method_layout_t> methods;
vt_visitor_t(std::vector<class_layout_t> classes, std::vector<method_layout_t> methods)
: classes(classes), methods(methods)
{
}
void visit(parser::goal_t *node) override;
void visit(parser::main_class_t *node) override;
void visit(parser::class_decl_t *node) override;
void visit(parser::var_decl_t *node) override{};
void visit(parser::method_decl_t *node) override{};
void visit(parser::type_t *node) override{};
void visit(parser::statement_t *node) override{};
void visit(parser::block_statement_t *node) override{};
void visit(parser::if_statement_t *node) override{};
void visit(parser::while_statement_t *node) override{};
void visit(parser::print_statement_t *node) override{};
void visit(parser::assign_statement_t *node) override{};
void visit(parser::array_assign_statement_t *node) override{};
void visit(parser::expression_t *node) override{};
void visit(parser::binary_expression_t *node) override{};
void visit(parser::array_index_expression_t *node) override{};
void visit(parser::array_length_expression_t *node) override{};
void visit(parser::method_call_expression_t *node) override{};
void visit(parser::integer_literal_expression_t *node) override{};
void visit(parser::true_literal_expression_t *node) override{};
void visit(parser::false_literal_expression_t *node) override{};
void visit(parser::identifier_expression_t *node) override{};
void visit(parser::this_expression_t *node) override{};
void visit(parser::new_integer_array_expression_t *node) override{};
void visit(parser::new_object_expression_t *node) override{};
void visit(parser::not_expression_t *node) override{};
void visit(parser::parentheses_expression_t *node) override{};
};
class bc_compiler_visitor_t : public visitor::visitor_t {
public:
basic_block_t *current_basic_block;
std::vector<class_layout_t> classes;
std::vector<method_layout_t> methods;
size_t current_method;
semantics::semantic_vis_type_check_t type_checker;
bc_compiler_visitor_t(std::vector<class_layout_t> classes,
std::vector<method_layout_t> methods,
semantics::semantic_vis_type_check_t type_checker)
: classes(classes), methods(methods), current_method(0), type_checker(type_checker)
{
}
void print();
void visit(parser::goal_t *node) override;
void visit(parser::main_class_t *node) override;
void visit(parser::class_decl_t *node) override;
void visit(parser::var_decl_t *node) override;
void visit(parser::method_decl_t *node) override;
void visit(parser::type_t *node) override;
void visit(parser::statement_t *node) override;
void visit(parser::block_statement_t *node) override;
void visit(parser::if_statement_t *node) override;
void visit(parser::while_statement_t *node) override;
void visit(parser::print_statement_t *node) override;
void visit(parser::assign_statement_t *node) override;
void visit(parser::array_assign_statement_t *node) override;
void visit(parser::expression_t *node) override;
void visit(parser::binary_expression_t *node) override;
void visit(parser::array_index_expression_t *node) override;
void visit(parser::array_length_expression_t *node) override;
void visit(parser::method_call_expression_t *node) override;
void visit(parser::integer_literal_expression_t *node) override;
void visit(parser::true_literal_expression_t *node) override;
void visit(parser::false_literal_expression_t *node) override;
void visit(parser::identifier_expression_t *node) override;
void visit(parser::this_expression_t *node) override;
void visit(parser::new_integer_array_expression_t *node) override;
void visit(parser::new_object_expression_t *node) override;
void visit(parser::not_expression_t *node) override;
void visit(parser::parentheses_expression_t *node) override;
};
struct llvm_state_t {
llvm::LLVMContext *context;
llvm::Module *module;
llvm::IRBuilder<> *builder;
};
struct llvm_method_layout_t {
std::pair<std::string, std::string> method_name;
std::vector<semantics::type_t *> signature;
};
struct llvm_class_layout_t {
std::string name;
std::vector<std::pair<std::string, std::string>> fields;
std::vector<llvm_method_layout_t *> vtable;
};
class llvm_object_layout_visitor_t : public visitor::visitor_t {
public:
llvm_state_t llvm_state;
std::vector<llvm_class_layout_t> classes;
std::string current_class;
semantics::semantic_vis_type_check_t type_checker;
llvm_object_layout_visitor_t(semantics::semantic_vis_type_check_t type_checker)
: type_checker(type_checker)
{
auto ctx = new llvm::LLVMContext();
auto m = new llvm::Module("MiniVM", *ctx);
auto b = new llvm::IRBuilder<>(*ctx);
llvm_state = {ctx, m, b};
}
void visit(parser::goal_t *node) override;
void visit(parser::main_class_t *node) override;
void visit(parser::class_decl_t *node) override;
void visit(parser::var_decl_t *node) override{};
void visit(parser::method_decl_t *node) override{};
void visit(parser::type_t *node) override{};
void visit(parser::statement_t *node) override{};
void visit(parser::block_statement_t *node) override{};
void visit(parser::if_statement_t *node) override{};
void visit(parser::while_statement_t *node) override{};
void visit(parser::print_statement_t *node) override{};
void visit(parser::assign_statement_t *node) override{};
void visit(parser::array_assign_statement_t *node) override{};
void visit(parser::expression_t *node) override{};
void visit(parser::binary_expression_t *node) override{};
void visit(parser::array_index_expression_t *node) override{};
void visit(parser::array_length_expression_t *node) override{};
void visit(parser::method_call_expression_t *node) override{};
void visit(parser::integer_literal_expression_t *node) override{};
void visit(parser::true_literal_expression_t *node) override{};
void visit(parser::false_literal_expression_t *node) override{};
void visit(parser::identifier_expression_t *node) override{};
void visit(parser::this_expression_t *node) override{};
void visit(parser::new_integer_array_expression_t *node) override{};
void visit(parser::new_object_expression_t *node) override{};
void visit(parser::not_expression_t *node) override{};
void visit(parser::parentheses_expression_t *node) override{};
};
class llvm_vt_visitor_t : public visitor::visitor_t {
public:
llvm_state_t llvm_state;
std::vector<llvm_class_layout_t> classes;
semantics::semantic_vis_type_check_t type_checker;
llvm_vt_visitor_t(llvm_state_t llvm_state, std::vector<llvm_class_layout_t> classes,
semantics::semantic_vis_type_check_t type_checker)
: llvm_state(llvm_state), classes(classes), type_checker(type_checker)
{
}
void visit(parser::goal_t *node) override;
void visit(parser::main_class_t *node) override;
void visit(parser::class_decl_t *node) override;
void visit(parser::var_decl_t *node) override{};
void visit(parser::method_decl_t *node) override{};
void visit(parser::type_t *node) override{};
void visit(parser::statement_t *node) override{};
void visit(parser::block_statement_t *node) override{};
void visit(parser::if_statement_t *node) override{};
void visit(parser::while_statement_t *node) override{};
void visit(parser::print_statement_t *node) override{};
void visit(parser::assign_statement_t *node) override{};
void visit(parser::array_assign_statement_t *node) override{};
void visit(parser::expression_t *node) override{};
void visit(parser::binary_expression_t *node) override{};
void visit(parser::array_index_expression_t *node) override{};
void visit(parser::array_length_expression_t *node) override{};
void visit(parser::method_call_expression_t *node) override{};
void visit(parser::integer_literal_expression_t *node) override{};
void visit(parser::true_literal_expression_t *node) override{};
void visit(parser::false_literal_expression_t *node) override{};
void visit(parser::identifier_expression_t *node) override{};
void visit(parser::this_expression_t *node) override{};
void visit(parser::new_integer_array_expression_t *node) override{};
void visit(parser::new_object_expression_t *node) override{};
void visit(parser::not_expression_t *node) override{};
void visit(parser::parentheses_expression_t *node) override{};
};
class llvm_compiler_visitor_t : public visitor::visitor_t {
public:
llvm::Value *current_value;
llvm_state_t llvm_state;
std::vector<llvm_class_layout_t> classes;
std::string current_class;
std::string current_method;
std::map<std::string, llvm::AllocaInst *> locals;
semantics::semantic_vis_type_check_t type_checker;
llvm_compiler_visitor_t(llvm_state_t llvm_state, std::vector<llvm_class_layout_t> classes,
semantics::semantic_vis_type_check_t type_checker)
: current_value(nullptr),
llvm_state(llvm_state),
classes(classes),
type_checker(type_checker)
{
}
void visit(parser::goal_t *node) override;
void visit(parser::main_class_t *node) override;
void visit(parser::class_decl_t *node) override;
void visit(parser::var_decl_t *node) override;
void visit(parser::method_decl_t *node) override;
void visit(parser::type_t *node) override;
void visit(parser::statement_t *node) override;
void visit(parser::block_statement_t *node) override;
void visit(parser::if_statement_t *node) override;
void visit(parser::while_statement_t *node) override;
void visit(parser::print_statement_t *node) override;
void visit(parser::assign_statement_t *node) override;
void visit(parser::array_assign_statement_t *node) override;
void visit(parser::expression_t *node) override;
void visit(parser::binary_expression_t *node) override;
void visit(parser::array_index_expression_t *node) override;
void visit(parser::array_length_expression_t *node) override;
void visit(parser::method_call_expression_t *node) override;
void visit(parser::integer_literal_expression_t *node) override;
void visit(parser::true_literal_expression_t *node) override;
void visit(parser::false_literal_expression_t *node) override;
void visit(parser::identifier_expression_t *node) override;
void visit(parser::this_expression_t *node) override;
void visit(parser::new_integer_array_expression_t *node) override;
void visit(parser::new_object_expression_t *node) override;
void visit(parser::not_expression_t *node) override;
void visit(parser::parentheses_expression_t *node) override;
};
}