compilepass.cpp
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Fri, Mar 13, 2:09 AM

compilepass.cpp

#include "compilepass.h"
#include "clasplayer.h"
#include <ast.h>
#include "llvmlayer.h"
#include "query/containers.h"
#include "query/context.h"
#include "compilation/containers.h"
#include "compilation/latecontextcompiler2.h"
#include "ExternLayer.h"
#include "pass/adhocpass.h"
#include "compilation/targetinterpretation.h"
#include "pass/versionspass.h"
#include "compilation/scopedecorators.h"
#include <boost/optional.hpp>
#include <memory>
#include <iostream>
using namespace std;
using namespace xreate;
using namespace xreate::compilation;
using namespace llvm;
//TODO use Scope<TargetLlvm>
//SECTIONTAG types/convert implementation
//TODO type conversion:
//a) automatically expand types int -> bigger int; int -> floating
//b) detect exact type of `num` based on max used numeral / function type
//c) warning if need to truncate (allow/dissalow based on annotations)
namespace xreate {
llvm::Value*
doAutomaticTypeConversion(llvm::Value* source, llvm::Type* tyTarget, llvm::IRBuilder<>& builder){
if (tyTarget->isIntegerTy() && source->getType()->isIntegerTy())
{
llvm::IntegerType* tyTargetInt = llvm::dyn_cast<IntegerType>(tyTarget);
llvm::IntegerType* tySourceInt = llvm::dyn_cast<IntegerType>(source->getType());
if (tyTargetInt->getBitWidth() < tySourceInt->getBitWidth()){
return builder.CreateCast(llvm::Instruction::Trunc, source, tyTarget);
}
if (tyTargetInt->getBitWidth() > tySourceInt->getBitWidth()){
return builder.CreateCast(llvm::Instruction::SExt, source, tyTarget);
}
}
if (source->getType()->isIntegerTy() && tyTarget->isFloatingPointTy()){
return builder.CreateCast(llvm::Instruction::SIToFP, source, tyTarget);
}
return source;
}
std::string
BasicFunctionDecorator::prepareName(){
AST* ast = FunctionUnit::pass->man->root;
string name = ast->getFunctionVariants(FunctionUnit::function->__name).size() > 1?
FunctionUnit::function->__name + std::to_string(FunctionUnit::function.id()) :
FunctionUnit::function->__name;
return name;
}
std::vector<llvm::Type*>
BasicFunctionDecorator::prepareArguments(){
LLVMLayer* llvm = FunctionUnit::pass->man->llvm;
AST* ast = FunctionUnit::pass->man->root;
CodeScope* entry = FunctionUnit::function->__entry;
std::vector<llvm::Type*> signature;
std::transform(entry->__bindings.begin(), entry->__bindings.end(), std::inserter(signature, signature.end()),
[llvm, ast, entry](const std::string &arg)->llvm::Type* {
assert(entry->__identifiers.count(arg));
ScopedSymbol argid{entry->__identifiers.at(arg), VERSION_NONE};
return llvm->toLLVMType(ast->expandType(entry->__declarations.at(argid).type));
});
return signature;
}
llvm::Type*
BasicFunctionDecorator::prepareResult(){
LLVMLayer* llvm = FunctionUnit::pass->man->llvm;
AST* ast = FunctionUnit::pass->man->root;
CodeScope* entry = FunctionUnit::function->__entry;
return llvm->toLLVMType(ast->expandType(entry->__declarations.at(ScopedSymbol::RetSymbol).type));
}
llvm::Function::arg_iterator
BasicFunctionDecorator::prepareBindings(){
CodeScope* entry = FunctionUnit::function->__entry;
AbstractCodeScopeUnit* entryCompilation = FunctionUnit::getScopeUnit(entry);
llvm::Function::arg_iterator fargsI = FunctionUnit::raw->arg_begin();
for (std::string &arg : entry->__bindings) {
ScopedSymbol argid{entry->__identifiers[arg], VERSION_NONE};
entryCompilation->bindArg(&*fargsI, argid);
fargsI->setName(arg);
++fargsI;
}
return fargsI;
}
//SECTIONTAG late-context FunctionDecorator
template<class Parent>
class LateContextFunctionDecorator: public Parent{
public:
LateContextFunctionDecorator(ManagedFnPtr f, CompilePass* p)
: Parent(f, p), contextCompiler(this, p)
{}
protected:
std::vector<llvm::Type*> prepareArguments(){
std::vector<llvm::Type*>&& arguments = Parent::prepareArguments();
size_t sizeLateContextDemand = contextCompiler.getFunctionDemandSize();
if (sizeLateContextDemand) {
llvm::Type* ty32 = llvm::Type::getInt32Ty(llvm::getGlobalContext());
llvm::Type* tyDemand = llvm::ArrayType::get(ty32, sizeLateContextDemand);
arguments.push_back(tyDemand);
}
return arguments;
}
llvm::Function::arg_iterator prepareBindings(){
llvm::Function::arg_iterator fargsI = Parent::prepareBindings();
size_t sizeLateContextDemand = contextCompiler.getFunctionDemandSize();
if (sizeLateContextDemand){
fargsI->setName("latecontext");
contextCompiler.rawContextArgument = &*fargsI;
++fargsI;
}
return fargsI;
}
public:
LateContextCompiler2 contextCompiler;
};
//SECTIONTAG adhoc FunctionDecorator
template<class Parent>
class AdhocFunctionDecorator: public Parent{
public:
AdhocFunctionDecorator(ManagedFnPtr f, CompilePass* p)
: Parent(f, p) {}
protected:
llvm::Type* prepareResult(){
PassManager* man = Parent::pass->man;
CodeScope* entry = Parent::function->__entry;
LLVMLayer* llvm = Parent::pass->man->llvm;
AST* ast = Parent::pass->man->root;
AdhocPass* adhocpass = reinterpret_cast<AdhocPass*>(man->getPassById(PassId::AdhocPass));
if (! Parent::function->isPrefunction){
return Parent::prepareResult();
}
adhocImplementation = adhocpass->findAssotiatedScheme(entry);
return llvm->toLLVMType(ast->expandType(adhocImplementation->getResultType()));
}
public:
AdhocScheme* adhocImplementation=nullptr;
};
//DEBT compiler rigidly depends on exact definition of DefaultFunctionUnit
typedef LateContextFunctionDecorator<
AdhocFunctionDecorator<
BasicFunctionDecorator>> DefaultFunctionUnit;
AbstractCodeScopeUnit::AbstractCodeScopeUnit(CodeScope* codeScope, FunctionUnit* f, CompilePass* compilePass)
: pass(compilePass), function(f), scope(codeScope)
{}
llvm::Value*
CallStatementRaw::operator() (std::vector<llvm::Value *>&& args, const std::string& hintDecl) {
llvm::Function* calleeInfo = dyn_cast<llvm::Function>(__callee);
if (calleeInfo){
auto argsFormal = calleeInfo->args();
int pos=0;
//SECTIONTAG types/convert function ret value
for (auto argFormal = argsFormal.begin(); argFormal!=argsFormal.end(); ++argFormal, ++pos){
args[pos] = doAutomaticTypeConversion(args[pos], argFormal->getType(), llvm->builder);
}
}
return llvm->builder.CreateCall(__calleeTy, __callee, args, hintDecl);
}
//DESABLEDFEATURE implement inlining
class CallStatementInline: public CallStatement{
public:
CallStatementInline(FunctionUnit* caller, FunctionUnit* callee, LLVMLayer* l)
: __caller(caller), __callee(callee), llvm(l) {}
llvm::Value* operator() (std::vector<llvm::Value *>&& args, const std::string& hintDecl) {
//TOTEST inlining
// CodeScopeUnit* entryCompilation = outer->getScopeUnit(function->__entry);
// for(int i=0, size = args.size(); i<size; ++i) {
// entryCompilation->bindArg(args.at(i), string(entryCompilation->scope->__bindings.at(i)));
// }
//
//
// return entryCompilation->compile();
return nullptr;
}
private:
FunctionUnit* __caller;
FunctionUnit* __callee;
LLVMLayer* llvm;
bool isInline(){
// Symbol ret = Symbol{0, function->__entry};
// bool flagOnTheFly = SymbolAttachments::get<IsImplementationOnTheFly>(ret, false);
//TODO consider inlining
return false;
}
};
}
BasicCodeScopeUnit::BasicCodeScopeUnit(CodeScope* codeScope, FunctionUnit* f, CompilePass* compilePass)
: AbstractCodeScopeUnit(codeScope, f, compilePass)
{}
llvm::Value*
BasicCodeScopeUnit::processSymbol(const Symbol& s, std::string hintRetVar){
Expression declaration = CodeScope::getDeclaration(s);
CodeScope* scope = s.scope;
AbstractCodeScopeUnit* self = AbstractCodeScopeUnit::function->getScopeUnit(scope);
return self->process(declaration, hintRetVar);
}
//SECTIONTAG late-context find callee function
//TOTEST static late context decisions
//TOTEST dynamic late context decisions
CallStatement*
BasicCodeScopeUnit::findFunction(const std::string& calleeName){
LLVMLayer* llvm = pass->man->llvm;
ClaspLayer* clasp = pass->man->clasp;
DefaultFunctionUnit* function = dynamic_cast<DefaultFunctionUnit*>(this->function);
ContextQuery* queryContext = pass->queryContext;
const std::list<ManagedFnPtr>& specializations = pass->man->root->getFunctionVariants(calleeName);
//if no specializations registered - check external function
if (specializations.size()==0){
llvm::Function* external = llvm->layerExtern->lookupFunction(calleeName);
return new CallStatementRaw(external, llvm);
}
//no decisions required
if (specializations.size()==1){
if (!specializations.front()->guardContext.isValid()) {
return new CallStatementRaw( pass->getFunctionUnit(specializations.front())->compile(), llvm);
}
}
//TODO move dictSpecialization over to a separate function in order to perform cache, etc.
//prepare specializations dictionary
std::map<Expression, ManagedFnPtr> dictSpecializations;
boost::optional<ManagedFnPtr> variantDefault;
boost::optional<ManagedFnPtr> variant;
for(const ManagedFnPtr& f: specializations){
const Expression& guard = f->guardContext;
//default case:
if (!guard.isValid()){
variantDefault = f;
continue;
}
assert(dictSpecializations.emplace(guard, f).second && "Found several identical specializations");
}
//check static context
ScopePacked scopeCaller = clasp->pack(this->scope);
const string atomSpecialization = "specialization";
const Expression topicSpecialization(Operator::CALL, {(Atom<Identifier_t>(string(atomSpecialization))), (Atom<Identifier_t>(string(calleeName))), (Atom<Number_t>(scopeCaller))});
const Decisions& decisions = queryContext->getFinalDecisions(scopeCaller);
if (decisions.count(topicSpecialization)){
variant = dictSpecializations.at(decisions.at(topicSpecialization));
}
//TODO check only demand for this particular topic.
size_t sizeDemand = function->contextCompiler.getFunctionDemandSize();
//decision made if static context found or no late context exists(and there is default variant)
bool flagHasStaticDecision = variant || (variantDefault && !sizeDemand);
//if no late context exists
if (flagHasStaticDecision) {
FunctionUnit* calleeUnit = pass->getFunctionUnit(variant? *variant: *variantDefault);
//inlining possible based on static decision only
// if (calleeUnit->isInline()) {
// return new CallStatementInline(function, calleeUnit);
// }
return new CallStatementRaw(calleeUnit->compile(), llvm);
}
//require default variant if no static decision made
assert(variantDefault);
llvm::Function* functionVariantDefault = this->pass->getFunctionUnit(*variantDefault)->compile();
llvm::Value* resultFn = function->contextCompiler.findFunction(calleeName, functionVariantDefault, scopeCaller);
llvm::PointerType *resultPTy = cast<llvm::PointerType>(resultFn->getType());
llvm::FunctionType *resultFTy = cast<llvm::FunctionType>(resultPTy->getElementType());
return new CallStatementRaw(resultFn, resultFTy, llvm);
}
//DISABLEDFEATURE transformations
// if (pass->transformations->isAcceptable(expr)){
// return pass->transformations->transform(expr, result, ctx);
// }
llvm::Value*
BasicCodeScopeUnit::process(const Expression& expr, const std::string& hintVarDecl){
#define DEFAULT(x) (hintVarDecl.empty()? x: hintVarDecl)
llvm::Value *left; llvm::Value *right;
LLVMLayer& l = *pass->man->llvm;
xreate::compilation::Advanced instructions = xreate::compilation::Advanced({this, function, pass});
switch (expr.op) {
case Operator::ADD: case Operator::SUB: case Operator::MUL:
case Operator::DIV: case Operator::EQU: case Operator::LSS:
case Operator::GTR: case Operator::NE: case Operator::LSE:
case Operator::GTE:
assert(expr.__state == Expression::COMPOUND);
assert(expr.operands.size() == 2);
left = process(expr.operands[0]);
right = process(expr.operands[1]);
//SECTIONTAG types/convert binary operation
right = doAutomaticTypeConversion(right, left->getType(), l.builder);
break;
default:;
}
switch (expr.op) {
case Operator::ADD:
return l.builder.CreateAdd(left, right, DEFAULT("tmp_add"));
break;
case Operator::SUB:
return l.builder.CreateSub(left, right, DEFAULT("tmp_sub"));
break;
case Operator::MUL:
return l.builder.CreateMul(left, right, DEFAULT("tmp_mul"));
break;
case Operator::DIV:
return l.builder.CreateSDiv(left, right, DEFAULT("tmp_div"));
break;
case Operator::EQU:
if (left->getType()->isIntegerTy()) return l.builder.CreateICmpEQ(left, right, DEFAULT("tmp_equ"));
if (left->getType()->isFloatingPointTy()) return l.builder.CreateFCmpOEQ(left, right, DEFAULT("tmp_equ"));
break;
case Operator::NE:
return l.builder.CreateICmpNE(left, right, DEFAULT("tmp_ne"));
break;
case Operator::LSS:
return l.builder.CreateICmpSLT(left, right, DEFAULT("tmp_lss"));
break;
case Operator::LSE:
return l.builder.CreateICmpSLE(left, right, DEFAULT("tmp_lse"));
break;
case Operator::GTR:
return l.builder.CreateICmpSGT(left, right, DEFAULT("tmp_gtr"));
break;
case Operator::GTE:
return l.builder.CreateICmpSGE(left, right, DEFAULT("tmp_gte"));
break;
case Operator::NEG:
left = process(expr.operands[0]);
return l.builder.CreateNeg(left, DEFAULT("tmp_neg"));
break;
case Operator::CALL: {
assert(expr.__state == Expression::COMPOUND);
std::string nameCallee = expr.getValueString();
shared_ptr<CallStatement> callee(findFunction(nameCallee));
//prepare arguments
std::vector<llvm::Value *> args;
args.reserve(expr.operands.size());
std::transform(expr.operands.begin(), expr.operands.end(), std::inserter(args, args.end()),
[this](const Expression &operand) {
return process(operand);
}
);
ScopePacked outerScopeId = pass->man->clasp->pack(this->scope);
//TASK a) refactor CALL/ADHOC/find function
//SECTIONTAG late-context propagation arg
size_t calleeDemandSize = pass->queryContext->getFunctionDemand(nameCallee).size();
if (calleeDemandSize){
DefaultFunctionUnit* function = dynamic_cast<DefaultFunctionUnit*>(this->function);
llvm::Value* argLateContext = function->contextCompiler.compileContextArgument(nameCallee, outerScopeId);
args.push_back(argLateContext);
}
return (*callee)(move(args), DEFAULT("res_"+nameCallee));
}
case Operator::IF:
{
return instructions.compileIf(expr, DEFAULT("tmp_if"));
}
case Operator::SWITCH:
{
return instructions.compileSwitch(expr, DEFAULT("tmp_switch"));
}
case Operator::LOOP_CONTEXT:
{
assert(false);
return nullptr;
//return instructions.compileLoopContext(expr, DEFAULT("tmp_loop"));
}
case Operator::LOGIC_AND: {
assert(expr.operands.size() == 1);
return process (expr.operands[0]);
}
case Operator::LIST:
{
return instructions.compileListAsSolidArray(expr, DEFAULT("tmp_list"));
};
case Operator::LIST_RANGE:
{
assert(false); //no compilation phase for a range list
// return InstructionList(this).compileConstantArray(expr, l, hintRetVar);
};
case Operator::LIST_NAMED:
{
typedef Expanded<TypeAnnotation> ExpandedType;
ExpandedType tyRaw = l.ast->expandType(expr.type);
const std::vector<string> fields = (tyRaw.get().__operator == TypeOperator::CUSTOM)?
l.layerExtern->getStructFields(l.layerExtern->lookupType(tyRaw.get().__valueCustom))
: tyRaw.get().fields;
std::map<std::string, size_t> indexFields;
for(size_t i=0, size = fields.size(); i<size; ++i){
indexFields.emplace(fields[i], i);
}
llvm::StructType* tyRecord = llvm::cast<llvm::StructType>(l.toLLVMType(tyRaw));
llvm::Value* record = llvm::UndefValue::get(tyRecord);
for (size_t i=0; i<expr.operands.size(); ++i){
const Expression& operand = expr.operands.at(i);
unsigned int fieldId = indexFields.at(expr.bindings.at(i));
llvm::Value* result = 0;
//TODO Null ad hoc Llvm implementation
// if (operand.isNone()){
// llvm::Type* tyNullField = tyRecord->getElementType(fieldId);
// result = llvm::UndefValue::get(tyNullField);
//
// } else {
result = process(operand);
// }
assert (result);
record = l.builder.CreateInsertValue(record, result, llvm::ArrayRef<unsigned>({fieldId}));
}
return record;
};
case Operator::MAP:
{
assert(expr.blocks.size());
return instructions.compileMapSolidOutput(expr, DEFAULT("map"));
};
case Operator::FOLD:
{
return instructions.compileFold(expr, DEFAULT("fold"));
};
case Operator::FOLD_INF:
{
return instructions.compileFoldInf(expr, DEFAULT("fold"));
};
case Operator::INDEX:
{
//TODO allow multiindex
assert(expr.operands.size()==2);
assert(expr.operands[0].__state == Expression::IDENT);
const std::string& hintIdent= expr.operands[0].getValueString();
Symbol s = Attachments::get<Symbol>(expr.operands[0]);
const ExpandedType& t2 = pass->man->root->expandType(CodeScope::getDeclaration(s).type);
llvm::Value* aggr = processSymbol(s, hintIdent);
switch (t2.get().__operator)
{
case TypeOperator::STRUCT: case TypeOperator::CUSTOM:
{
const Expression& idx = expr.operands.at(1);
assert(idx.__state == Expression::STRING);
std::string idxField = idx.getValueString();
return instructions.compileStructIndex(aggr, t2, idxField);
};
case TypeOperator::ARRAY: {
std::vector<llvm::Value*> indexes;
std::transform(++expr.operands.begin(), expr.operands.end(), std::inserter(indexes, indexes.end()),
[this] (const Expression& op){
return process(op);
}
);
return instructions.compileArrayIndex(aggr, indexes, DEFAULT(string("el_") + hintIdent));
};
default:
assert(false);
}
};
//SECTIONTAG adhoc actual compilation
//TODO a) make sure that it's correct: function->adhocImplementation built for Entry scope and used in another scope
case Operator::ADHOC: {
DefaultFunctionUnit* function = dynamic_cast<DefaultFunctionUnit*>(this->function);
assert(function->adhocImplementation && "Adhoc implementation not found");
const Expression& comm = AdhocExpression(expr).getCommand();
CodeScope* scope = function->adhocImplementation->getCommandImplementation(comm);
AbstractCodeScopeUnit* unitScope = function->getScopeUnit(scope);
//SECTIONTAG types/convert ADHOC ret convertation
llvm::Type* resultTy = l.toLLVMType( pass->man->root->expandType(function->adhocImplementation->getResultType()));
return doAutomaticTypeConversion(unitScope->compile(), resultTy, l.builder);
};
case Operator::CALL_INTRINSIC:{
const std::string op = expr.getValueString();
if (op == "copy") {
llvm::Value* result = process(expr.getOperands().at(0));
auto decoratorVersions = Decorators<VersionsScopeDecoratorTag>::getInterface(this);
llvm::Value* storage = decoratorVersions->processIntrinsicInit(result->getType());
decoratorVersions->processIntrinsicCopy(result, storage);
return l.builder.CreateLoad(storage, hintVarDecl);
}
assert(false && "undefined intrinsic");
}
case Operator::NONE:
assert(expr.__state != Expression::COMPOUND);
switch (expr.__state) {
case Expression::IDENT: {
Symbol s = Attachments::get<Symbol>(expr);
return processSymbol(s, expr.getValueString());
}
case Expression::NUMBER: {
llvm::Type* typConst;
if (expr.type.isValid()){
typConst = l.toLLVMType(pass->man->root->expandType(expr.type));
} else {
typConst = llvm::Type::getInt32Ty(llvm::getGlobalContext());
}
int literal = expr.getValueDouble();
return llvm::ConstantInt::get(typConst, literal);
}
case Expression::STRING: {
return instructions.compileConstantStringAsPChar(expr.getValueString(), DEFAULT("tmp_str"));
};
case Expression::VARIANT: {
const ExpandedType& typVariant = pass->man->root->expandType(expr.type);
llvm::Type* typRaw = l.toLLVMType(typVariant);
int value = expr.getValueDouble();
return llvm::ConstantInt::get(typRaw, value);
}
default: {
break;
}
};
break;
default: break;
}
assert(false);
return 0;
}
llvm::Value*
BasicCodeScopeUnit::compile(const std::string& hintBlockDecl){
if (!hintBlockDecl.empty()) {
llvm::BasicBlock *block = llvm::BasicBlock::Create(llvm::getGlobalContext(), hintBlockDecl, function->raw);
pass->man->llvm->builder.SetInsertPoint(block);
}
Symbol symbScope = Symbol{ScopedSymbol::RetSymbol, scope};
return processSymbol(symbScope);
}
llvm::Function*
FunctionUnit::compile(){
if (raw != nullptr) return raw;
LLVMLayer* llvm = pass->man->llvm;
llvm::IRBuilder<>& builder = llvm->builder;
string&& functionName = prepareName();
std::vector<llvm::Type*>&& types = prepareArguments();
llvm::Type* expectedResultType = prepareResult();
llvm::FunctionType *ft = llvm::FunctionType::get(expectedResultType, types, false);
raw = llvm::cast<llvm::Function>(llvm->module->getOrInsertFunction(functionName, ft));
prepareBindings();
const std::string&blockName = "entry";
llvm::BasicBlock* blockCurrent = builder.GetInsertBlock();
llvm::Value* result =getScopeUnit(function->__entry)->compile(blockName);
assert(result);
//SECTIONTAG types/convert function ret value
builder.CreateRet(doAutomaticTypeConversion(result, expectedResultType, llvm->builder));
if (blockCurrent){
builder.SetInsertPoint(blockCurrent);
}
llvm->moveToGarbage(ft);
return raw;
}
AbstractCodeScopeUnit*
FunctionUnit::getScopeUnit(CodeScope* scope){
if (!scopes.count(scope)){
AbstractCodeScopeUnit* unit = new DefaultScopeUnit(scope, this, pass);
scopes.emplace(scope, std::unique_ptr<AbstractCodeScopeUnit>(unit));
}
return scopes.at(scope).get();
}
AbstractCodeScopeUnit*
FunctionUnit::getEntry(){
return getScopeUnit(function->getEntryScope());
}
AbstractCodeScopeUnit*
FunctionUnit::getScopeUnit(ManagedScpPtr scope){
return getScopeUnit(&*scope);
}
FunctionUnit*
CompilePass::getFunctionUnit(const ManagedFnPtr& function){
unsigned int id = function.id();
if (!functions.count(id)){
FunctionUnit* unit = new DefaultFunctionUnit(function, this);
functions.emplace(id, unit);
return unit;
}
return functions.at(id);
}
void
CompilePass::run(){
managerTransformations = new TransformationsManager();
targetInterpretation = new TargetInterpretation(this->man->root, this);
queryContext = reinterpret_cast<ContextQuery*> (man->clasp->getQuery(QueryId::ContextQuery));
//Find out main function;
ClaspLayer::ModelFragment model = man->clasp->query(Config::get("function-entry"));
assert(model && "Error: No entry function found");
assert(model->first != model->second && "Error: Ambiguous entry function");
string nameMain = std::get<0>(ClaspLayer::parse<std::string>(model->first->second));
FunctionUnit* unitMain = getFunctionUnit(man->root->findFunction(nameMain));
entry = unitMain->compile();
}
llvm::Function*
CompilePass::getEntryFunction(){
assert(entry);
return entry;
}
void
CompilePass::prepareQueries(ClaspLayer* clasp){
clasp->registerQuery(new containers::Query(), QueryId::ContainersQuery);
clasp->registerQuery(new ContextQuery(), QueryId::ContextQuery);
}

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