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4.9 KiB

#include "compiler.hpp"
#include "binop.hpp"
#include "error.hpp"
#include "global_scope.hpp"
#include "parse_driver.hpp"
#include "type.hpp"
#include "type_env.hpp"
#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Verifier.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetMachine.h"
void compiler::add_default_types() {
global_env->bind_type("Int", type_ptr(new type_base("Int")));
}
void compiler::add_binop_type(binop op, type_ptr type) {
auto name = mng.new_mangled_name(op_action(op));
global_env->bind(op_name(op), std::move(type), visibility::global);
global_env->set_mangled_name(op_name(op), name);
}
void compiler::add_default_function_types() {
type_ptr int_type = global_env->lookup_type("Int");
assert(int_type != nullptr);
type_ptr int_type_app = type_ptr(new type_app(int_type));
type_ptr closed_int_op_type(
new type_arr(int_type_app, type_ptr(new type_arr(int_type_app, int_type_app))));
constexpr binop closed_ops[] = { PLUS, MINUS, TIMES, DIVIDE };
for(auto& op : closed_ops) add_binop_type(op, closed_int_op_type);
}
void compiler::parse() {
if(!driver())
throw compiler_error("failed to open file");
}
void compiler::typecheck() {
std::set<std::string> free_variables;
global_defs.find_free(free_variables);
global_defs.typecheck(type_m, global_env);
}
void compiler::translate() {
for(auto& data : global_defs.defs_data) {
data.second->into_globals(global_scp);
}
for(auto& defn : global_defs.defs_defn) {
auto& function = defn.second->into_global(global_scp);
defn.second->env->set_mangled_name(defn.first, function.name);
}
}
void compiler::compile() {
global_scp.compile();
}
void compiler::create_llvm_binop(binop op) {
auto new_function =
ctx.create_custom_function(global_env->get_mangled_name(op_name(op)), 2);
std::vector<instruction_ptr> instructions;
instructions.push_back(instruction_ptr(new instruction_push(1)));
instructions.push_back(instruction_ptr(new instruction_eval()));
instructions.push_back(instruction_ptr(new instruction_push(1)));
instructions.push_back(instruction_ptr(new instruction_eval()));
instructions.push_back(instruction_ptr(new instruction_binop(op)));
instructions.push_back(instruction_ptr(new instruction_update(2)));
instructions.push_back(instruction_ptr(new instruction_pop(2)));
ctx.get_builder().SetInsertPoint(&new_function->getEntryBlock());
for(auto& instruction : instructions) {
instruction->gen_llvm(ctx, new_function);
}
ctx.get_builder().CreateRetVoid();
}
void compiler::generate_llvm() {
for(auto op : all_binops) {
create_llvm_binop(op);
}
global_scp.generate_llvm(ctx);
}
void compiler::output_llvm(const std::string& into) {
std::string targetTriple = llvm::sys::getDefaultTargetTriple();
llvm::InitializeNativeTarget();
llvm::InitializeNativeTargetAsmParser();
llvm::InitializeNativeTargetAsmPrinter();
std::string error;
const llvm::Target* target =
llvm::TargetRegistry::lookupTarget(targetTriple, error);
if (!target) {
std::cerr << error << std::endl;
} else {
std::string cpu = "generic";
std::string features = "";
llvm::TargetOptions options;
std::unique_ptr<llvm::TargetMachine> targetMachine(
target->createTargetMachine(targetTriple, cpu, features,
options, llvm::Optional<llvm::Reloc::Model>()));
ctx.get_module().setDataLayout(targetMachine->createDataLayout());
ctx.get_module().setTargetTriple(targetTriple);
std::error_code ec;
llvm::raw_fd_ostream file(into, ec, llvm::sys::fs::F_None);
if (ec) {
throw compiler_error("failed to open object file for writing");
} else {
llvm::CodeGenFileType type = llvm::CGFT_ObjectFile;
llvm::legacy::PassManager pm;
if (targetMachine->addPassesToEmitFile(pm, file, NULL, type)) {
throw compiler_error("failed to add passes to pass manager");
} else {
pm.run(ctx.get_module());
file.close();
}
}
}
}
compiler::compiler(const std::string& filename)
: file_m(), global_defs(), driver(file_m, global_defs, filename),
global_env(new type_env), type_m(), mng(), global_scp(mng), ctx() {
add_default_types();
add_default_function_types();
}
void compiler::operator()(const std::string& into) {
parse();
typecheck();
translate();
compile();
generate_llvm();
output_llvm(into);
}
file_mgr& compiler::get_file_manager() {
return file_m;
}
type_mgr& compiler::get_type_manager() {
return type_m;
}