Context Navigation

source: src/GenPoly/Box.cc @ 0f889a77

ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsctordeferred_resndemanglerenumforall-pointer-decaygc_noraiijacob/cs343-translationjenkins-sandboxmemorynew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumresolv-newstringwith_gc

Last change on this file since 0f889a77 was 5f6c42c, checked in by Aaron Moss <a3moss@…>, 8 years ago
Merge changes from Peter
Property mode set to `100644`
File size: 48.0 KB

Rev	Line
[51587aa]	1	//
	2	// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
	3	//
	4	// The contents of this file are covered under the licence agreement in the
	5	// file "LICENCE" distributed with Cforall.
	6	//
[01aeade]	7	// Box.cc --
[51587aa]	8	//
	9	// Author : Richard C. Bilson
	10	// Created On : Mon May 18 07:44:20 2015
[cf16f94]	11	// Last Modified By : Peter A. Buhr
	12	// Last Modified On : Tue Dec 15 15:30:31 2015
	13	// Update Count : 215
[51587aa]	14	//
[51b7345]	15
	16	#include <set>
[b1a6d6b]	17	#include <stack>
[51b7345]	18	#include <string>
	19	#include <iterator>
	20	#include <algorithm>
	21	#include <cassert>
	22
	23	#include "Box.h"
	24	#include "PolyMutator.h"
	25	#include "FindFunction.h"
	26	#include "ScrubTyVars.h"
	27
[68cd1ce]	28	#include "Parser/ParseNode.h"
	29
[cdec5af]	30	#include "SynTree/Constant.h"
[51b7345]	31	#include "SynTree/Type.h"
	32	#include "SynTree/Expression.h"
	33	#include "SynTree/Initializer.h"
	34	#include "SynTree/Statement.h"
	35	#include "SynTree/Mutator.h"
[68cd1ce]	36
[51b7345]	37	#include "ResolvExpr/TypeEnvironment.h"
[68cd1ce]	38
[51b7345]	39	#include "SymTab/Mangler.h"
	40
	41	#include "SemanticError.h"
	42	#include "UniqueName.h"
	43	#include "utility.h"
	44
	45	#include <ext/functional> // temporary
	46
	47	namespace GenPoly {
[01aeade]	48	namespace {
	49	const std::list<Label> noLabels;
	50
[e56cfdb0]	51	FunctionType makeAdapterType( FunctionType adaptee, const TyVarMap &tyVars );
	52
[f8b961b]	53	/// Replaces polymorphic return types with out-parameters, replaces calls to polymorphic functions with adapter calls as needed, and adds appropriate type variables to the function call
[01aeade]	54	class Pass1 : public PolyMutator {
	55	public:
[56fcd77]	56	Pass1();
[01aeade]	57	virtual Expression mutate( ApplicationExpr appExpr );
	58	virtual Expression mutate( AddressExpr addrExpr );
	59	virtual Expression mutate( UntypedExpr expr );
	60	virtual DeclarationWithType* mutate( FunctionDecl *functionDecl );
	61	virtual TypeDecl mutate( TypeDecl typeDecl );
	62	virtual Expression mutate( CommaExpr commaExpr );
	63	virtual Expression mutate( ConditionalExpr condExpr );
[cf16f94]	64	virtual Statement * mutate( ReturnStmt *returnStmt );
[01aeade]	65	virtual Type mutate( PointerType pointerType );
[cf16f94]	66	virtual Type * mutate( FunctionType *functionType );
[51b7345]	67
[01aeade]	68	virtual void doBeginScope();
	69	virtual void doEndScope();
	70	private:
	71	void passTypeVars( ApplicationExpr appExpr, std::list< Expression >::iterator &arg, const TyVarMap &exprTyVars );
	72	Expression addRetParam( ApplicationExpr appExpr, FunctionType function, Type retType, std::list< Expression *>::iterator &arg );
	73	Expression addPolyRetParam( ApplicationExpr appExpr, FunctionType function, std::string typeName, std::list< Expression >::iterator &arg );
	74	Expression applyAdapter( ApplicationExpr appExpr, FunctionType function, std::list< Expression >::iterator &arg, const TyVarMap &exprTyVars );
	75	void boxParam( Type formal, Expression &arg, const TyVarMap &exprTyVars );
	76	void boxParams( ApplicationExpr appExpr, FunctionType function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars );
	77	void addInferredParams( ApplicationExpr appExpr, FunctionType functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars );
	78	void findAssignOps( const std::list< TypeDecl *> &forall );
	79	void passAdapters( ApplicationExpr appExpr, FunctionType functionType, const TyVarMap &exprTyVars );
	80	FunctionDecl makeAdapter( FunctionType adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars );
	81	Expression handleIntrinsics( ApplicationExpr appExpr );
	82	ObjectDecl makeTemporary( Type type );
[c29d9ce]	83
[e56cfdb0]	84	typedef std::map< std::string, DeclarationWithType *> AdapterMap;
[c29d9ce]	85	std::map< std::string, DeclarationWithType *> assignOps;
[01aeade]	86	std::stack< AdapterMap > adapters;
	87	DeclarationWithType *retval;
	88	bool useRetval;
	89	UniqueName tempNamer;
	90	};
	91
[f8b961b]	92	/// Moves polymorphic returns in function types to pointer-type parameters, adds type size and assertion parameters to parameter lists as well
[01aeade]	93	class Pass2 : public PolyMutator {
	94	public:
	95	template< typename DeclClass >
	96	DeclClass handleDecl( DeclClass decl, Type *type );
	97	virtual DeclarationWithType mutate( FunctionDecl functionDecl );
	98	virtual ObjectDecl mutate( ObjectDecl objectDecl );
	99	virtual TypeDecl mutate( TypeDecl typeDecl );
	100	virtual TypedefDecl mutate( TypedefDecl typedefDecl );
	101	virtual Type mutate( PointerType pointerType );
	102	virtual Type mutate( FunctionType funcType );
	103	private:
	104	void addAdapters( FunctionType *functionType );
[51b7345]	105
[01aeade]	106	std::map< UniqueId, std::string > adapterName;
	107	};
	108
[f8b961b]	109	/// Replaces initialization of polymorphic values with alloca, declaration of dtype/ftype with appropriate void expression, and sizeof expressions of polymorphic types with the proper variable
[01aeade]	110	class Pass3 : public PolyMutator {
	111	public:
	112	template< typename DeclClass >
	113	DeclClass handleDecl( DeclClass decl, Type *type );
	114	virtual DeclarationWithType mutate( FunctionDecl functionDecl );
	115	virtual ObjectDecl mutate( ObjectDecl objectDecl );
	116	virtual TypedefDecl mutate( TypedefDecl objectDecl );
	117	virtual TypeDecl mutate( TypeDecl objectDecl );
	118	virtual Statement mutate( DeclStmt declStmt );
	119	virtual Type mutate( PointerType pointerType );
	120	virtual Type mutate( FunctionType funcType );
	121	private:
	122	};
	123
	124	} // anonymous namespace
	125
	126	void printAllNotBuiltin( const std::list< Declaration *>& translationUnit, std::ostream &os ) {
	127	for ( std::list< Declaration *>::const_iterator i = translationUnit.begin(); i != translationUnit.end(); ++i ) {
	128	if ( ! LinkageSpec::isBuiltin( (*i)->get_linkage() ) ) {
	129	(*i)->print( os );
	130	os << std::endl;
[6c3744e]	131	} // if
[01aeade]	132	} // for
[6c3744e]	133	}
	134
[01aeade]	135	void box( std::list< Declaration *>& translationUnit ) {
[56fcd77]	136	Pass1 pass1;
	137	Pass2 pass2;
	138	Pass3 pass3;
[01aeade]	139	mutateAll( translationUnit, pass1 );
	140	mutateAll( translationUnit, pass2 );
	141	mutateAll( translationUnit, pass3 );
[6c3744e]	142	}
	143
[01aeade]	144	////////////////////////////////////////// Pass1 ////////////////////////////////////////////////////
	145
	146	namespace {
[bdf1954]	147	std::string makePolyMonoSuffix( FunctionType * function, const TyVarMap &tyVars ) {
	148	std::stringstream name;
	149
[ed1065c]	150	// NOTE: this function previously used isPolyObj, which failed to produce
	151	// the correct thing in some situations. It's not clear to me why this wasn't working.
	152
[bdf1954]	153	// if the return type or a parameter type involved polymorphic types, then the adapter will need
	154	// to take those polymorphic types as pointers. Therefore, there can be two different functions
	155	// with the same mangled name, so we need to further mangle the names.
[ed1065c]	156	for ( std::list< DeclarationWithType *>::iterator retval = function->get_returnVals().begin(); retval != function->get_returnVals().end(); ++retval ) {
[ffad73a]	157	if ( isPolyType( (*retval)->get_type(), tyVars ) ) {
[ed1065c]	158	name << "P";
	159	} else {
	160	name << "M";
	161	}
[bdf1954]	162	}
	163	name << "_";
	164	std::list< DeclarationWithType *> &paramList = function->get_parameters();
	165	for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
[ffad73a]	166	if ( isPolyType( (*arg)->get_type(), tyVars ) ) {
[bdf1954]	167	name << "P";
	168	} else {
	169	name << "M";
	170	}
	171	} // for
	172	return name.str();
	173	}
	174
	175	std::string mangleAdapterName( FunctionType * function, const TyVarMap &tyVars ) {
	176	return SymTab::Mangler::mangle( function ) + makePolyMonoSuffix( function, tyVars );
	177	}
	178
[01aeade]	179	std::string makeAdapterName( const std::string &mangleName ) {
	180	return "_adapter" + mangleName;
	181	}
[6c3744e]	182
[56fcd77]	183	Pass1::Pass1() : useRetval( false ), tempNamer( "_temp" ) {
[e56cfdb0]	184	adapters.push(AdapterMap());
[01aeade]	185	}
	186
	187	bool checkAssignment( DeclarationWithType *decl, std::string &name ) {
	188	if ( decl->get_name() == "?=?" ) {
	189	if ( PointerType ptrType = dynamic_cast< PointerType >( decl->get_type() ) ) {
	190	if ( FunctionType funType = dynamic_cast< FunctionType >( ptrType->get_base() ) ) {
	191	if ( funType->get_parameters().size() == 2 ) {
	192	if ( PointerType pointer = dynamic_cast< PointerType >( funType->get_parameters().front()->get_type() ) ) {
	193	if ( TypeInstType typeInst = dynamic_cast< TypeInstType >( pointer->get_base() ) ) {
[cf16f94]	194	if ( TypeInstType typeInst2 = dynamic_cast< TypeInstType >( funType->get_parameters().back()->get_type() ) ) {
	195	if ( typeInst->get_name() == typeInst2->get_name() ) {
	196	name = typeInst->get_name();
	197	return true;
	198	} // if
	199	} // if
[01aeade]	200	} // if
	201	} // if
	202	} // if
	203	} // if
	204	} // if
	205	} // if
	206	return false;
	207	}
	208
	209	void Pass1::findAssignOps( const std::list< TypeDecl *> &forall ) {
[ed1065c]	210	// what if a nested function uses an assignment operator?
	211	// assignOps.clear();
[01aeade]	212	for ( std::list< TypeDecl *>::const_iterator i = forall.begin(); i != forall.end(); ++i ) {
	213	for ( std::list< DeclarationWithType >::const_iterator assert = (i)->get_assertions().begin(); assert != (*i)->get_assertions().end(); ++assert ) {
	214	std::string typeName;
	215	if ( checkAssignment( *assert, typeName ) ) {
	216	assignOps[ typeName ] = *assert;
	217	} // if
	218	} // for
	219	} // for
	220	}
	221
[82dd287]	222	DeclarationWithType Pass1::mutate( FunctionDecl functionDecl ) {
[e56cfdb0]	223	if ( functionDecl->get_statements() ) { // empty routine body ?
	224	doBeginScope();
[01aeade]	225	TyVarMap oldtyVars = scopeTyVars;
[ed1065c]	226	std::map< std::string, DeclarationWithType *> oldassignOps = assignOps;
[01aeade]	227	DeclarationWithType *oldRetval = retval;
	228	bool oldUseRetval = useRetval;
[e56cfdb0]	229
	230	// process polymorphic return value
[01aeade]	231	retval = 0;
	232	std::string typeName;
	233	if ( isPolyRet( functionDecl->get_functionType(), typeName ) && functionDecl->get_linkage() == LinkageSpec::Cforall ) {
	234	retval = functionDecl->get_functionType()->get_returnVals().front();
[51b7345]	235
[01aeade]	236	// give names to unnamed return values
	237	if ( retval->get_name() == "" ) {
	238	retval->set_name( "_retparm" );
	239	retval->set_linkage( LinkageSpec::C );
	240	} // if
	241	} // if
	242
[e56cfdb0]	243	FunctionType *functionType = functionDecl->get_functionType();
[01aeade]	244	makeTyVarMap( functionDecl->get_functionType(), scopeTyVars );
	245	findAssignOps( functionDecl->get_functionType()->get_forall() );
[e56cfdb0]	246
	247	std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
	248	std::list< FunctionType *> functions;
	249	for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
	250	for ( std::list< DeclarationWithType >::iterator assert = (tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
	251	findFunction( (*assert)->get_type(), functions, scopeTyVars, needsAdapter );
	252	} // for
	253	} // for
	254	for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
	255	findFunction( (*arg)->get_type(), functions, scopeTyVars, needsAdapter );
	256	} // for
	257	AdapterMap & adapters = Pass1::adapters.top();
	258	for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
[bdf1954]	259	std::string mangleName = mangleAdapterName( *funType, scopeTyVars );
[e56cfdb0]	260	if ( adapters.find( mangleName ) == adapters.end() ) {
	261	std::string adapterName = makeAdapterName( mangleName );
	262	adapters.insert( std::pair< std::string, DeclarationWithType >( mangleName, new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( funType, scopeTyVars ) ), 0 ) ) );
	263	} // if
	264	} // for
	265
[01aeade]	266	functionDecl->set_statements( functionDecl->get_statements()->acceptMutator( *this ) );
[51b7345]	267
[01aeade]	268	scopeTyVars = oldtyVars;
[ed1065c]	269	assignOps = oldassignOps;
[e56cfdb0]	270	// std::cerr << "end FunctionDecl: ";
	271	// for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
	272	// std::cerr << i->first << " ";
	273	// }
	274	// std::cerr << "\n";
[01aeade]	275	retval = oldRetval;
	276	useRetval = oldUseRetval;
[e56cfdb0]	277	doEndScope();
[01aeade]	278	} // if
	279	return functionDecl;
	280	}
[6c3744e]	281
[01aeade]	282	TypeDecl Pass1::mutate( TypeDecl typeDecl ) {
	283	scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
	284	return Mutator::mutate( typeDecl );
	285	}
[6c3744e]	286
[01aeade]	287	Expression Pass1::mutate( CommaExpr commaExpr ) {
	288	bool oldUseRetval = useRetval;
	289	useRetval = false;
	290	commaExpr->set_arg1( maybeMutate( commaExpr->get_arg1(), *this ) );
	291	useRetval = oldUseRetval;
	292	commaExpr->set_arg2( maybeMutate( commaExpr->get_arg2(), *this ) );
	293	return commaExpr;
	294	}
[6c3744e]	295
[01aeade]	296	Expression Pass1::mutate( ConditionalExpr condExpr ) {
	297	bool oldUseRetval = useRetval;
	298	useRetval = false;
	299	condExpr->set_arg1( maybeMutate( condExpr->get_arg1(), *this ) );
	300	useRetval = oldUseRetval;
	301	condExpr->set_arg2( maybeMutate( condExpr->get_arg2(), *this ) );
	302	condExpr->set_arg3( maybeMutate( condExpr->get_arg3(), *this ) );
	303	return condExpr;
[6c3744e]	304
[01aeade]	305	}
[6c3744e]	306
[01aeade]	307	void Pass1::passTypeVars( ApplicationExpr appExpr, std::list< Expression >::iterator &arg, const TyVarMap &exprTyVars ) {
	308	for ( TyVarMap::const_iterator tyParm = exprTyVars.begin(); tyParm != exprTyVars.end(); ++tyParm ) {
	309	ResolvExpr::EqvClass eqvClass;
	310	assert( env );
	311	if ( tyParm->second == TypeDecl::Any ) {
	312	Type *concrete = env->lookup( tyParm->first );
	313	if ( concrete ) {
	314	arg = appExpr->get_args().insert( arg, new SizeofExpr( concrete->clone() ) );
	315	arg++;
[db0b3ce]	316	arg = appExpr->get_args().insert( arg, new AlignofExpr( concrete->clone() ) );
	317	arg++;
[01aeade]	318	} else {
	319	throw SemanticError( "unbound type variable in application ", appExpr );
	320	} // if
	321	} // if
	322	} // for
	323	}
[6c3744e]	324
[01aeade]	325	ObjectDecl Pass1::makeTemporary( Type type ) {
[68cd1ce]	326	ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, type, 0 );
[01aeade]	327	stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
	328	return newObj;
	329	}
[6c3744e]	330
[01aeade]	331	Expression Pass1::addRetParam( ApplicationExpr appExpr, FunctionType function, Type retType, std::list< Expression *>::iterator &arg ) {
[cf16f94]	332	// *** Code Removal *** After introducing a temporary variable for all return expressions, the following code appears superfluous.
	333	// if ( useRetval ) {
	334	// assert( retval );
	335	// arg = appExpr->get_args().insert( arg, new VariableExpr( retval ) );
	336	// arg++;
	337	// } else {
	338
	339	// Create temporary to hold return value of polymorphic function and produce that temporary as a result
	340	// using a comma expression. Possibly change comma expression into statement expression "{}" for multiple
	341	// return values.
	342	ObjectDecl *newObj = makeTemporary( retType->clone() );
	343	Expression *paramExpr = new VariableExpr( newObj );
	344	// If the type of the temporary is not polymorphic, box temporary by taking its address; otherwise the
	345	// temporary is already boxed and can be used directly.
[5f6c42c]	346	if ( ! isPolyType( newObj->get_type(), scopeTyVars, env ) ) {
[cf16f94]	347	paramExpr = new AddressExpr( paramExpr );
[01aeade]	348	} // if
[cf16f94]	349	arg = appExpr->get_args().insert( arg, paramExpr ); // add argument to function call
	350	arg++;
	351	// Build a comma expression to call the function and emulate a normal return.
	352	CommaExpr *commaExpr = new CommaExpr( appExpr, new VariableExpr( newObj ) );
	353	commaExpr->set_env( appExpr->get_env() );
	354	appExpr->set_env( 0 );
	355	return commaExpr;
	356	// } // if
	357	// return appExpr;
[01aeade]	358	}
[6c3744e]	359
[01aeade]	360	Expression Pass1::addPolyRetParam( ApplicationExpr appExpr, FunctionType function, std::string typeName, std::list< Expression >::iterator &arg ) {
	361	ResolvExpr::EqvClass eqvClass;
	362	assert( env );
	363	Type *concrete = env->lookup( typeName );
	364	if ( concrete == 0 ) {
	365	throw SemanticError( "Unbound type variable " + typeName + " in ", appExpr );
	366	} // if
	367	return addRetParam( appExpr, function, concrete, arg );
	368	}
[6c3744e]	369
[01aeade]	370	Expression Pass1::applyAdapter( ApplicationExpr appExpr, FunctionType function, std::list< Expression >::iterator &arg, const TyVarMap &tyVars ) {
	371	Expression *ret = appExpr;
[ffad73a]	372	if ( ! function->get_returnVals().empty() && isPolyType( function->get_returnVals().front()->get_type(), tyVars ) ) {
[01aeade]	373	ret = addRetParam( appExpr, function, function->get_returnVals().front()->get_type(), arg );
	374	} // if
[bdf1954]	375	std::string mangleName = mangleAdapterName( function, tyVars );
[01aeade]	376	std::string adapterName = makeAdapterName( mangleName );
[b1a6d6b]	377
[01aeade]	378	appExpr->get_args().push_front( appExpr->get_function() );
	379	appExpr->set_function( new NameExpr( adapterName ) );
[51b7345]	380
[01aeade]	381	return ret;
	382	}
[6c3744e]	383
[01aeade]	384	void Pass1::boxParam( Type param, Expression &arg, const TyVarMap &exprTyVars ) {
	385	assert( ! arg->get_results().empty() );
[ffad73a]	386	// if ( ! dynamic_cast< PointerType *>( arg->get_results().front() ) ) {
[01aeade]	387	TypeInstType typeInst = dynamic_cast< TypeInstType >( param );
	388	if ( typeInst && exprTyVars.find( typeInst->get_name() ) != exprTyVars.end() ) {
	389	if ( dynamic_cast< TypeInstType *>( arg->get_results().front() ) ) {
	390	// if the argument's type is a type parameter, we don't need to box again!
	391	return;
	392	} else if ( arg->get_results().front()->get_isLvalue() ) {
	393	// VariableExpr and MemberExpr are lvalues
	394	arg = new AddressExpr( arg );
	395	} else {
[68cd1ce]	396	ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, arg->get_results().front()->clone(), 0 );
[f6d7e0f]	397	newObj->get_type()->get_qualifiers() = Type::Qualifiers(); // TODO: is this right???
[01aeade]	398	stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
	399	UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
	400	assign->get_args().push_back( new VariableExpr( newObj ) );
	401	assign->get_args().push_back( arg );
	402	stmtsToAdd.push_back( new ExprStmt( noLabels, assign ) );
	403	arg = new AddressExpr( new VariableExpr( newObj ) );
	404	} // if
	405	} // if
[ffad73a]	406	// }
[01aeade]	407	}
[6c3744e]	408
[01aeade]	409	void addCast( Expression &actual, Type formal, const TyVarMap &tyVars ) {
	410	Type *newType = formal->clone();
	411	std::list< FunctionType *> functions;
	412	// instead of functions needing adapters, this really ought to look for
	413	// any function mentioning a polymorphic type
	414	findAndReplaceFunction( newType, functions, tyVars, needsAdapter );
	415	if ( ! functions.empty() ) {
	416	actual = new CastExpr( actual, newType );
	417	} else {
	418	delete newType;
	419	} // if
	420	}
[6c3744e]	421
[01aeade]	422	void Pass1::boxParams( ApplicationExpr appExpr, FunctionType function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) {
	423	for ( std::list< DeclarationWithType *>::const_iterator param = function->get_parameters().begin(); param != function->get_parameters().end(); ++param, ++arg ) {
	424	assert( arg != appExpr->get_args().end() );
	425	addCast( arg, (param)->get_type(), exprTyVars );
	426	boxParam( (param)->get_type(), arg, exprTyVars );
	427	} // for
	428	}
[6c3744e]	429
[01aeade]	430	void Pass1::addInferredParams( ApplicationExpr appExpr, FunctionType functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) {
	431	std::list< Expression *>::iterator cur = arg;
	432	for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
	433	for ( std::list< DeclarationWithType >::iterator assert = (tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
	434	InferredParams::const_iterator inferParam = appExpr->get_inferParams().find( (*assert)->get_uniqueId() );
[698664b3]	435	assert( inferParam != appExpr->get_inferParams().end() && "NOTE: Explicit casts of polymorphic functions to compatible monomorphic functions are currently unsupported" );
[01aeade]	436	Expression *newExpr = inferParam->second.expr->clone();
	437	addCast( newExpr, (*assert)->get_type(), tyVars );
	438	boxParam( (*assert)->get_type(), newExpr, tyVars );
	439	appExpr->get_args().insert( cur, newExpr );
	440	} // for
	441	} // for
	442	}
[6c3744e]	443
[01aeade]	444	void makeRetParm( FunctionType *funcType ) {
	445	DeclarationWithType *retParm = funcType->get_returnVals().front();
[6c3744e]	446
[01aeade]	447	// make a new parameter that is a pointer to the type of the old return value
	448	retParm->set_type( new PointerType( Type::Qualifiers(), retParm->get_type() ) );
	449	funcType->get_parameters().push_front( retParm );
[6c3744e]	450
[01aeade]	451	// we don't need the return value any more
	452	funcType->get_returnVals().clear();
	453	}
[6c3744e]	454
[01aeade]	455	FunctionType makeAdapterType( FunctionType adaptee, const TyVarMap &tyVars ) {
	456	// actually make the adapter type
	457	FunctionType *adapter = adaptee->clone();
[ffad73a]	458	if ( ! adapter->get_returnVals().empty() && isPolyType( adapter->get_returnVals().front()->get_type(), tyVars ) ) {
[01aeade]	459	makeRetParm( adapter );
	460	} // if
[68cd1ce]	461	adapter->get_parameters().push_front( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ) );
[01aeade]	462	return adapter;
	463	}
[6c3744e]	464
[01aeade]	465	Expression makeAdapterArg( DeclarationWithType param, DeclarationWithType arg, DeclarationWithType realParam, const TyVarMap &tyVars ) {
	466	assert( param );
	467	assert( arg );
[ffad73a]	468	if ( isPolyType( realParam->get_type(), tyVars ) ) {
	469	// if ( dynamic_cast< PointerType *>( arg->get_type() ) ) {
	470	// return new CastExpr( new VariableExpr( param ), arg->get_type()->clone() );
	471	// } else {
[e56cfdb0]	472	if ( dynamic_cast<TypeInstType *>(arg->get_type()) == NULL ) {
	473	UntypedExpr deref = new UntypedExpr( new NameExpr( "?" ) );
	474	deref->get_args().push_back( new CastExpr( new VariableExpr( param ), new PointerType( Type::Qualifiers(), arg->get_type()->clone() ) ) );
	475	deref->get_results().push_back( arg->get_type()->clone() );
	476	return deref;
	477	} // if
[ffad73a]	478	// }
[01aeade]	479	} // if
	480	return new VariableExpr( param );
	481	}
[6c3744e]	482
[01aeade]	483	void addAdapterParams( ApplicationExpr adapteeApp, std::list< DeclarationWithType >::iterator arg, std::list< DeclarationWithType >::iterator param, std::list< DeclarationWithType >::iterator paramEnd, std::list< DeclarationWithType *>::iterator realParam, const TyVarMap &tyVars ) {
	484	UniqueName paramNamer( "_p" );
	485	for ( ; param != paramEnd; ++param, ++arg, ++realParam ) {
	486	if ( (*param)->get_name() == "" ) {
	487	(*param)->set_name( paramNamer.newName() );
	488	(*param)->set_linkage( LinkageSpec::C );
	489	} // if
	490	adapteeApp->get_args().push_back( makeAdapterArg( param, arg, *realParam, tyVars ) );
	491	} // for
	492	}
[6c3744e]	493
[b1a6d6b]	494
	495
[01aeade]	496	FunctionDecl Pass1::makeAdapter( FunctionType adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ) {
	497	FunctionType *adapterType = makeAdapterType( adaptee, tyVars );
	498	adapterType = ScrubTyVars::scrub( adapterType, tyVars );
	499	DeclarationWithType *adapteeDecl = adapterType->get_parameters().front();
	500	adapteeDecl->set_name( "_adaptee" );
	501	ApplicationExpr *adapteeApp = new ApplicationExpr( new CastExpr( new VariableExpr( adapteeDecl ), new PointerType( Type::Qualifiers(), realType ) ) );
	502	Statement *bodyStmt;
[51b7345]	503
[01aeade]	504	std::list< TypeDecl *>::iterator tyArg = realType->get_forall().begin();
	505	std::list< TypeDecl *>::iterator tyParam = adapterType->get_forall().begin();
	506	std::list< TypeDecl *>::iterator realTyParam = adaptee->get_forall().begin();
	507	for ( ; tyParam != adapterType->get_forall().end(); ++tyArg, ++tyParam, ++realTyParam ) {
	508	assert( tyArg != realType->get_forall().end() );
	509	std::list< DeclarationWithType >::iterator assertArg = (tyArg)->get_assertions().begin();
	510	std::list< DeclarationWithType >::iterator assertParam = (tyParam)->get_assertions().begin();
	511	std::list< DeclarationWithType >::iterator realAssertParam = (realTyParam)->get_assertions().begin();
	512	for ( ; assertParam != (*tyParam)->get_assertions().end(); ++assertArg, ++assertParam, ++realAssertParam ) {
	513	assert( assertArg != (*tyArg)->get_assertions().end() );
	514	adapteeApp->get_args().push_back( makeAdapterArg( assertParam, assertArg, *realAssertParam, tyVars ) );
	515	} // for
	516	} // for
[51b7345]	517
[01aeade]	518	std::list< DeclarationWithType *>::iterator arg = realType->get_parameters().begin();
	519	std::list< DeclarationWithType *>::iterator param = adapterType->get_parameters().begin();
	520	std::list< DeclarationWithType *>::iterator realParam = adaptee->get_parameters().begin();
	521	param++; // skip adaptee parameter
	522	if ( realType->get_returnVals().empty() ) {
	523	addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
	524	bodyStmt = new ExprStmt( noLabels, adapteeApp );
[ffad73a]	525	} else if ( isPolyType( adaptee->get_returnVals().front()->get_type(), tyVars ) ) {
[01aeade]	526	if ( (*param)->get_name() == "" ) {
	527	(*param)->set_name( "_ret" );
	528	(*param)->set_linkage( LinkageSpec::C );
	529	} // if
	530	UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
	531	UntypedExpr deref = new UntypedExpr( new NameExpr( "?" ) );
	532	deref->get_args().push_back( new CastExpr( new VariableExpr( *param++ ), new PointerType( Type::Qualifiers(), realType->get_returnVals().front()->get_type()->clone() ) ) );
	533	assign->get_args().push_back( deref );
	534	addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
	535	assign->get_args().push_back( adapteeApp );
	536	bodyStmt = new ExprStmt( noLabels, assign );
	537	} else {
	538	// adapter for a function that returns a monomorphic value
	539	addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
	540	bodyStmt = new ReturnStmt( noLabels, adapteeApp );
	541	} // if
	542	CompoundStmt *adapterBody = new CompoundStmt( noLabels );
	543	adapterBody->get_kids().push_back( bodyStmt );
	544	std::string adapterName = makeAdapterName( mangleName );
[de62360d]	545	return new FunctionDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, adapterType, adapterBody, false, false );
[01aeade]	546	}
[6c3744e]	547
[c29d9ce]	548	void Pass1::passAdapters( ApplicationExpr * appExpr, FunctionType * functionType, const TyVarMap & exprTyVars ) {
[e497c1d]	549	// collect a list of function types passed as parameters or implicit parameters (assertions)
[01aeade]	550	std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
	551	std::list< FunctionType *> functions;
	552	for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
	553	for ( std::list< DeclarationWithType >::iterator assert = (tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
	554	findFunction( (*assert)->get_type(), functions, exprTyVars, needsAdapter );
	555	} // for
	556	} // for
	557	for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
	558	findFunction( (*arg)->get_type(), functions, exprTyVars, needsAdapter );
	559	} // for
[e497c1d]	560
[e56cfdb0]	561	// parameter function types for which an appropriate adapter has been generated. we cannot use the types
	562	// after applying substitutions, since two different parameter types may be unified to the same type
[01aeade]	563	std::set< std::string > adaptersDone;
[e497c1d]	564
[01aeade]	565	for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
[c29d9ce]	566	FunctionType originalFunction = (funType)->clone();
[01aeade]	567	FunctionType realFunction = (funType)->clone();
	568	std::string mangleName = SymTab::Mangler::mangle( realFunction );
[e497c1d]	569
[e56cfdb0]	570	// only attempt to create an adapter or pass one as a parameter if we haven't already done so for this
	571	// pre-substitution parameter function type.
[01aeade]	572	if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
[e497c1d]	573	adaptersDone.insert( adaptersDone.begin(), mangleName );
	574
[e56cfdb0]	575	// apply substitution to type variables to figure out what the adapter's type should look like
[e497c1d]	576	assert( env );
	577	env->apply( realFunction );
[bdf1954]	578	mangleName = SymTab::Mangler::mangle( realFunction );
	579	mangleName += makePolyMonoSuffix( originalFunction, exprTyVars );
[e497c1d]	580
[e56cfdb0]	581	AdapterMap & adapters = Pass1::adapters.top();
	582	AdapterMap::iterator adapter = adapters.find( mangleName );
	583	if ( adapter == adapters.end() ) {
	584	// adapter has not been created yet in the current scope, so define it
	585	FunctionDecl newAdapter = makeAdapter( funType, realFunction, mangleName, exprTyVars );
	586	adapter = adapters.insert( adapters.begin(), std::pair< std::string, DeclarationWithType *>( mangleName, newAdapter ) );
	587	stmtsToAdd.push_back( new DeclStmt( noLabels, newAdapter ) );
[c29d9ce]	588	} // if
[e56cfdb0]	589	assert( adapter != adapters.end() );
	590
	591	// add the appropriate adapter as a parameter
	592	appExpr->get_args().push_front( new VariableExpr( adapter->second ) );
[01aeade]	593	} // if
	594	} // for
[e56cfdb0]	595	} // passAdapters
[6c3744e]	596
[78dd0da]	597	Expression makeIncrDecrExpr( ApplicationExpr appExpr, Type *polyType, bool isIncr ) {
[01aeade]	598	NameExpr *opExpr;
	599	if ( isIncr ) {
	600	opExpr = new NameExpr( "?+=?" );
	601	} else {
	602	opExpr = new NameExpr( "?-=?" );
[6c3744e]	603	} // if
[01aeade]	604	UntypedExpr *addAssign = new UntypedExpr( opExpr );
	605	if ( AddressExpr address = dynamic_cast< AddressExpr >( appExpr->get_args().front() ) ) {
	606	addAssign->get_args().push_back( address->get_arg() );
	607	} else {
	608	addAssign->get_args().push_back( appExpr->get_args().front() );
[6c3744e]	609	} // if
[78dd0da]	610	addAssign->get_args().push_back( new NameExpr( sizeofName( polyType ) ) );
[01aeade]	611	addAssign->get_results().front() = appExpr->get_results().front()->clone();
	612	if ( appExpr->get_env() ) {
	613	addAssign->set_env( appExpr->get_env() );
[6c3744e]	614	appExpr->set_env( 0 );
	615	} // if
[01aeade]	616	appExpr->get_args().clear();
	617	delete appExpr;
	618	return addAssign;
	619	}
	620
	621	Expression Pass1::handleIntrinsics( ApplicationExpr appExpr ) {
	622	if ( VariableExpr varExpr = dynamic_cast< VariableExpr >( appExpr->get_function() ) ) {
	623	if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic ) {
	624	if ( varExpr->get_var()->get_name() == "?[?]" ) {
	625	assert( ! appExpr->get_results().empty() );
	626	assert( appExpr->get_args().size() == 2 );
[ffad73a]	627	Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), scopeTyVars, env );
	628	Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), scopeTyVars, env );
	629	assert( ! baseType1 \|\| ! baseType2 );
[01aeade]	630	UntypedExpr *ret = 0;
[ffad73a]	631	if ( baseType1 \|\| baseType2 ) {
[01aeade]	632	ret = new UntypedExpr( new NameExpr( "?+?" ) );
	633	} // if
[ffad73a]	634	if ( baseType1 ) {
[01aeade]	635	UntypedExpr multiply = new UntypedExpr( new NameExpr( "??" ) );
	636	multiply->get_args().push_back( appExpr->get_args().back() );
[ffad73a]	637	multiply->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) );
[01aeade]	638	ret->get_args().push_back( appExpr->get_args().front() );
	639	ret->get_args().push_back( multiply );
[ffad73a]	640	} else if ( baseType2 ) {
[01aeade]	641	UntypedExpr multiply = new UntypedExpr( new NameExpr( "??" ) );
	642	multiply->get_args().push_back( appExpr->get_args().front() );
[ffad73a]	643	multiply->get_args().push_back( new NameExpr( sizeofName( baseType2 ) ) );
[01aeade]	644	ret->get_args().push_back( multiply );
	645	ret->get_args().push_back( appExpr->get_args().back() );
	646	} // if
[ffad73a]	647	if ( baseType1 \|\| baseType2 ) {
[01aeade]	648	ret->get_results().push_front( appExpr->get_results().front()->clone() );
	649	if ( appExpr->get_env() ) {
	650	ret->set_env( appExpr->get_env() );
	651	appExpr->set_env( 0 );
	652	} // if
	653	appExpr->get_args().clear();
	654	delete appExpr;
	655	return ret;
	656	} // if
	657	} else if ( varExpr->get_var()->get_name() == "*?" ) {
	658	assert( ! appExpr->get_results().empty() );
	659	assert( ! appExpr->get_args().empty() );
[ffad73a]	660	if ( isPolyType( appExpr->get_results().front(), scopeTyVars, env ) ) {
[01aeade]	661	Expression *ret = appExpr->get_args().front();
	662	delete ret->get_results().front();
	663	ret->get_results().front() = appExpr->get_results().front()->clone();
	664	if ( appExpr->get_env() ) {
	665	ret->set_env( appExpr->get_env() );
	666	appExpr->set_env( 0 );
	667	} // if
	668	appExpr->get_args().clear();
	669	delete appExpr;
	670	return ret;
	671	} // if
	672	} else if ( varExpr->get_var()->get_name() == "?++" \|\| varExpr->get_var()->get_name() == "?--" ) {
	673	assert( ! appExpr->get_results().empty() );
	674	assert( appExpr->get_args().size() == 1 );
[ffad73a]	675	if ( Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ) ) {
[01aeade]	676	Type *tempType = appExpr->get_results().front()->clone();
	677	if ( env ) {
	678	env->apply( tempType );
	679	} // if
	680	ObjectDecl *newObj = makeTemporary( tempType );
	681	VariableExpr *tempExpr = new VariableExpr( newObj );
	682	UntypedExpr *assignExpr = new UntypedExpr( new NameExpr( "?=?" ) );
	683	assignExpr->get_args().push_back( tempExpr->clone() );
	684	if ( AddressExpr address = dynamic_cast< AddressExpr >( appExpr->get_args().front() ) ) {
	685	assignExpr->get_args().push_back( address->get_arg()->clone() );
	686	} else {
	687	assignExpr->get_args().push_back( appExpr->get_args().front()->clone() );
	688	} // if
[ffad73a]	689	CommaExpr *firstComma = new CommaExpr( assignExpr, makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "?++" ) );
[01aeade]	690	return new CommaExpr( firstComma, tempExpr );
	691	} // if
	692	} else if ( varExpr->get_var()->get_name() == "++?" \|\| varExpr->get_var()->get_name() == "--?" ) {
	693	assert( ! appExpr->get_results().empty() );
	694	assert( appExpr->get_args().size() == 1 );
[ffad73a]	695	if ( Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ) ) {
	696	return makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "++?" );
[01aeade]	697	} // if
	698	} else if ( varExpr->get_var()->get_name() == "?+?" \|\| varExpr->get_var()->get_name() == "?-?" ) {
	699	assert( ! appExpr->get_results().empty() );
	700	assert( appExpr->get_args().size() == 2 );
[ffad73a]	701	Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), scopeTyVars, env );
	702	Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), scopeTyVars, env );
	703	if ( baseType1 && baseType2 ) {
[01aeade]	704	UntypedExpr *divide = new UntypedExpr( new NameExpr( "?/?" ) );
	705	divide->get_args().push_back( appExpr );
[ffad73a]	706	divide->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) );
[01aeade]	707	divide->get_results().push_front( appExpr->get_results().front()->clone() );
	708	if ( appExpr->get_env() ) {
	709	divide->set_env( appExpr->get_env() );
	710	appExpr->set_env( 0 );
	711	} // if
	712	return divide;
[ffad73a]	713	} else if ( baseType1 ) {
[01aeade]	714	UntypedExpr multiply = new UntypedExpr( new NameExpr( "??" ) );
	715	multiply->get_args().push_back( appExpr->get_args().back() );
[ffad73a]	716	multiply->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) );
[01aeade]	717	appExpr->get_args().back() = multiply;
[ffad73a]	718	} else if ( baseType2 ) {
[01aeade]	719	UntypedExpr multiply = new UntypedExpr( new NameExpr( "??" ) );
	720	multiply->get_args().push_back( appExpr->get_args().front() );
[ffad73a]	721	multiply->get_args().push_back( new NameExpr( sizeofName( baseType2 ) ) );
[01aeade]	722	appExpr->get_args().front() = multiply;
	723	} // if
	724	} else if ( varExpr->get_var()->get_name() == "?+=?" \|\| varExpr->get_var()->get_name() == "?-=?" ) {
	725	assert( ! appExpr->get_results().empty() );
	726	assert( appExpr->get_args().size() == 2 );
[ffad73a]	727	Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env );
	728	if ( baseType ) {
[01aeade]	729	UntypedExpr multiply = new UntypedExpr( new NameExpr( "??" ) );
	730	multiply->get_args().push_back( appExpr->get_args().back() );
[ffad73a]	731	multiply->get_args().push_back( new NameExpr( sizeofName( baseType ) ) );
[01aeade]	732	appExpr->get_args().back() = multiply;
	733	} // if
	734	} // if
	735	return appExpr;
	736	} // if
[6c3744e]	737	} // if
[01aeade]	738	return 0;
	739	}
[6c3744e]	740
[01aeade]	741	Expression Pass1::mutate( ApplicationExpr appExpr ) {
[e56cfdb0]	742	// std::cerr << "mutate appExpr: ";
	743	// for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
	744	// std::cerr << i->first << " ";
	745	// }
	746	// std::cerr << "\n";
[01aeade]	747	bool oldUseRetval = useRetval;
	748	useRetval = false;
	749	appExpr->get_function()->acceptMutator( *this );
	750	mutateAll( appExpr->get_args(), *this );
	751	useRetval = oldUseRetval;
[51b7345]	752
[01aeade]	753	assert( ! appExpr->get_function()->get_results().empty() );
	754	PointerType pointer = dynamic_cast< PointerType >( appExpr->get_function()->get_results().front() );
	755	assert( pointer );
	756	FunctionType function = dynamic_cast< FunctionType >( pointer->get_base() );
	757	assert( function );
[51b7345]	758
[01aeade]	759	if ( Expression *newExpr = handleIntrinsics( appExpr ) ) {
	760	return newExpr;
	761	} // if
[51b7345]	762
[01aeade]	763	Expression *ret = appExpr;
[51b7345]	764
[01aeade]	765	std::list< Expression *>::iterator arg = appExpr->get_args().begin();
	766	std::list< Expression *>::iterator paramBegin = appExpr->get_args().begin();
[51b7345]	767
[01aeade]	768	std::string typeName;
	769	if ( isPolyRet( function, typeName ) ) {
	770	ret = addPolyRetParam( appExpr, function, typeName, arg );
	771	} else if ( needsAdapter( function, scopeTyVars ) ) {
[e56cfdb0]	772	// std::cerr << "needs adapter: ";
	773	// for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
	774	// std::cerr << i->first << " ";
	775	// }
	776	// std::cerr << "\n";
[01aeade]	777	// change the application so it calls the adapter rather than the passed function
	778	ret = applyAdapter( appExpr, function, arg, scopeTyVars );
	779	} // if
	780	arg = appExpr->get_args().begin();
[51b7345]	781
[01aeade]	782	TyVarMap exprTyVars;
	783	makeTyVarMap( function, exprTyVars );
[51b7345]	784
[01aeade]	785	passTypeVars( appExpr, arg, exprTyVars );
	786	addInferredParams( appExpr, function, arg, exprTyVars );
[51b7345]	787
[01aeade]	788	arg = paramBegin;
[51b7345]	789
[01aeade]	790	boxParams( appExpr, function, arg, exprTyVars );
[6c3744e]	791
[01aeade]	792	passAdapters( appExpr, function, exprTyVars );
[6c3744e]	793
[01aeade]	794	return ret;
	795	}
[6c3744e]	796
[01aeade]	797	Expression Pass1::mutate( UntypedExpr expr ) {
[ffad73a]	798	if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), scopeTyVars, env ) ) {
[01aeade]	799	if ( NameExpr name = dynamic_cast< NameExpr >( expr->get_function() ) ) {
	800	if ( name->get_name() == "*?" ) {
	801	Expression *ret = expr->get_args().front();
	802	expr->get_args().clear();
	803	delete expr;
	804	return ret->acceptMutator( *this );
	805	} // if
	806	} // if
	807	} // if
	808	return PolyMutator::mutate( expr );
	809	}
[6c3744e]	810
[01aeade]	811	Expression Pass1::mutate( AddressExpr addrExpr ) {
	812	assert( ! addrExpr->get_arg()->get_results().empty() );
[cf16f94]	813
	814	bool needs = false;
	815	if ( UntypedExpr expr = dynamic_cast< UntypedExpr >( addrExpr->get_arg() ) ) {
[5f6c42c]	816	if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), scopeTyVars, env ) ) {
[cf16f94]	817	if ( NameExpr name = dynamic_cast< NameExpr >( expr->get_function() ) ) {
	818	if ( name->get_name() == "*?" ) {
	819	if ( ApplicationExpr * appExpr = dynamic_cast< ApplicationExpr * >( expr->get_args().front() ) ) {
	820	assert( ! appExpr->get_function()->get_results().empty() );
	821	PointerType pointer = dynamic_cast< PointerType >( appExpr->get_function()->get_results().front() );
	822	assert( pointer );
	823	FunctionType function = dynamic_cast< FunctionType >( pointer->get_base() );
	824	assert( function );
	825	needs = needsAdapter( function, scopeTyVars );
	826	} // if
	827	} // if
	828	} // if
	829	} // if
	830	} // if
[01aeade]	831	addrExpr->set_arg( mutateExpression( addrExpr->get_arg() ) );
[5f6c42c]	832	if ( isPolyType( addrExpr->get_arg()->get_results().front(), scopeTyVars, env ) \|\| needs ) {
[01aeade]	833	Expression *ret = addrExpr->get_arg();
	834	delete ret->get_results().front();
	835	ret->get_results().front() = addrExpr->get_results().front()->clone();
	836	addrExpr->set_arg( 0 );
	837	delete addrExpr;
	838	return ret;
	839	} else {
	840	return addrExpr;
	841	} // if
	842	}
[6c3744e]	843
[cf16f94]	844	Statement * Pass1::mutate( ReturnStmt *returnStmt ) {
	845	if ( retval && returnStmt->get_expr() ) {
	846	assert( ! returnStmt->get_expr()->get_results().empty() );
	847	// *** Code Removal *** After introducing a temporary variable for all return expressions, the following code appears superfluous.
	848	// if ( returnStmt->get_expr()->get_results().front()->get_isLvalue() ) {
	849	// a cast expr on a polymorphic return value is either redundant or invalid
	850	while ( CastExpr castExpr = dynamic_cast< CastExpr >( returnStmt->get_expr() ) ) {
	851	returnStmt->set_expr( castExpr->get_arg() );
	852	returnStmt->get_expr()->set_env( castExpr->get_env() );
	853	castExpr->set_env( 0 );
	854	castExpr->set_arg( 0 );
	855	delete castExpr;
[5f6c42c]	856	} //while
[cf16f94]	857	TypeInstType typeInst = dynamic_cast< TypeInstType >( retval->get_type() );
	858	assert( typeInst );
	859	std::map< std::string, DeclarationWithType *>::const_iterator assignIter = assignOps.find( typeInst->get_name() );
	860	if ( assignIter == assignOps.end() ) {
	861	throw SemanticError( "Attempt to return dtype or ftype object in ", returnStmt->get_expr() );
[01aeade]	862	} // if
[cf16f94]	863	ApplicationExpr *assignExpr = new ApplicationExpr( new VariableExpr( assignIter->second ) );
	864	Expression *retParm = new NameExpr( retval->get_name() );
	865	retParm->get_results().push_back( new PointerType( Type::Qualifiers(), retval->get_type()->clone() ) );
	866	assignExpr->get_args().push_back( retParm );
	867	assignExpr->get_args().push_back( returnStmt->get_expr() );
	868	stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( assignExpr ) ) );
	869	// } else {
	870	// useRetval = true;
	871	// stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( returnStmt->get_expr() ) ) );
	872	// useRetval = false;
	873	// } // if
	874	returnStmt->set_expr( 0 );
[01aeade]	875	} else {
[cf16f94]	876	returnStmt->set_expr( mutateExpression( returnStmt->get_expr() ) );
[01aeade]	877	} // if
[cf16f94]	878	return returnStmt;
[01aeade]	879	}
[6c3744e]	880
[01aeade]	881	Type * Pass1::mutate( PointerType *pointerType ) {
	882	TyVarMap oldtyVars = scopeTyVars;
	883	makeTyVarMap( pointerType, scopeTyVars );
[51b7345]	884
[01aeade]	885	Type *ret = Mutator::mutate( pointerType );
[51b7345]	886
[01aeade]	887	scopeTyVars = oldtyVars;
	888	return ret;
	889	}
[6c3744e]	890
[01aeade]	891	Type * Pass1::mutate( FunctionType *functionType ) {
	892	TyVarMap oldtyVars = scopeTyVars;
	893	makeTyVarMap( functionType, scopeTyVars );
[51b7345]	894
[01aeade]	895	Type *ret = Mutator::mutate( functionType );
[51b7345]	896
[01aeade]	897	scopeTyVars = oldtyVars;
	898	return ret;
	899	}
[51b7345]	900
[01aeade]	901	void Pass1::doBeginScope() {
[bdf1954]	902	// push a copy of the current map
[e56cfdb0]	903	adapters.push(adapters.top());
[01aeade]	904	}
[b1a6d6b]	905
[01aeade]	906	void Pass1::doEndScope() {
	907	adapters.pop();
	908	}
[51b7345]	909
	910	////////////////////////////////////////// Pass2 ////////////////////////////////////////////////////
	911
[01aeade]	912	void Pass2::addAdapters( FunctionType *functionType ) {
	913	std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
	914	std::list< FunctionType *> functions;
	915	for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
	916	Type orig = (arg)->get_type();
	917	findAndReplaceFunction( orig, functions, scopeTyVars, needsAdapter );
	918	(*arg)->set_type( orig );
	919	}
	920	std::set< std::string > adaptersDone;
	921	for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
[bdf1954]	922	std::string mangleName = mangleAdapterName( *funType, scopeTyVars );
[01aeade]	923	if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
	924	std::string adapterName = makeAdapterName( mangleName );
[68cd1ce]	925	paramList.push_front( new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) );
[01aeade]	926	adaptersDone.insert( adaptersDone.begin(), mangleName );
	927	}
	928	}
[5f6c42c]	929	// deleteAll( functions );
[01aeade]	930	}
[6c3744e]	931
[01aeade]	932	template< typename DeclClass >
	933	DeclClass * Pass2::handleDecl( DeclClass decl, Type type ) {
	934	DeclClass ret = static_cast< DeclClass >( Mutator::mutate( decl ) );
[6c3744e]	935
[01aeade]	936	return ret;
	937	}
[6c3744e]	938
[01aeade]	939	DeclarationWithType * Pass2::mutate( FunctionDecl *functionDecl ) {
	940	return handleDecl( functionDecl, functionDecl->get_functionType() );
	941	}
[6c3744e]	942
[01aeade]	943	ObjectDecl * Pass2::mutate( ObjectDecl *objectDecl ) {
	944	return handleDecl( objectDecl, objectDecl->get_type() );
	945	}
[6c3744e]	946
[01aeade]	947	TypeDecl * Pass2::mutate( TypeDecl *typeDecl ) {
	948	scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
	949	if ( typeDecl->get_base() ) {
	950	return handleDecl( typeDecl, typeDecl->get_base() );
	951	} else {
	952	return Mutator::mutate( typeDecl );
	953	}
	954	}
[6c3744e]	955
[01aeade]	956	TypedefDecl * Pass2::mutate( TypedefDecl *typedefDecl ) {
	957	return handleDecl( typedefDecl, typedefDecl->get_base() );
	958	}
[6c3744e]	959
[01aeade]	960	Type * Pass2::mutate( PointerType *pointerType ) {
	961	TyVarMap oldtyVars = scopeTyVars;
	962	makeTyVarMap( pointerType, scopeTyVars );
[51b7345]	963
[01aeade]	964	Type *ret = Mutator::mutate( pointerType );
[51b7345]	965
[01aeade]	966	scopeTyVars = oldtyVars;
	967	return ret;
	968	}
[6c3744e]	969
[01aeade]	970	Type Pass2::mutate( FunctionType funcType ) {
	971	TyVarMap oldtyVars = scopeTyVars;
	972	makeTyVarMap( funcType, scopeTyVars );
[51b7345]	973
[01aeade]	974	std::string typeName;
	975	if ( isPolyRet( funcType, typeName ) ) {
	976	DeclarationWithType *ret = funcType->get_returnVals().front();
	977	ret->set_type( new PointerType( Type::Qualifiers(), ret->get_type() ) );
	978	funcType->get_parameters().push_front( ret );
	979	funcType->get_returnVals().pop_front();
	980	}
[51b7345]	981
[01aeade]	982	std::list< DeclarationWithType *>::iterator last = funcType->get_parameters().begin();
	983	std::list< DeclarationWithType *> inferredParams;
[78dd0da]	984	ObjectDecl newObj( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), 0 );
[f8b961b]	985	// ObjectDecl *newFunPtr = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 );
[01aeade]	986	for ( std::list< TypeDecl *>::const_iterator tyParm = funcType->get_forall().begin(); tyParm != funcType->get_forall().end(); ++tyParm ) {
[db0b3ce]	987	ObjectDecl sizeParm, alignParm;
	988	// add all size and alignment parameters to parameter list
[01aeade]	989	if ( (*tyParm)->get_kind() == TypeDecl::Any ) {
[78dd0da]	990	TypeInstType parmType( Type::Qualifiers(), (tyParm)->get_name(), tyParm );
	991
	992	sizeParm = newObj.clone();
	993	sizeParm->set_name( sizeofName( &parmType ) );
[db0b3ce]	994	last = funcType->get_parameters().insert( last, sizeParm );
	995	++last;
[78dd0da]	996
	997	alignParm = newObj.clone();
	998	alignParm->set_name( alignofName( &parmType ) );
[db0b3ce]	999	last = funcType->get_parameters().insert( last, alignParm );
[01aeade]	1000	++last;
	1001	}
[e56cfdb0]	1002	// move all assertions into parameter list
[01aeade]	1003	for ( std::list< DeclarationWithType >::iterator assert = (tyParm)->get_assertions().begin(); assert != (*tyParm)->get_assertions().end(); ++assert ) {
[f8b961b]	1004	// assert = (assert)->acceptMutator( *this );
[01aeade]	1005	inferredParams.push_back( *assert );
	1006	}
	1007	(*tyParm)->get_assertions().clear();
	1008	}
	1009	funcType->get_parameters().splice( last, inferredParams );
	1010	addAdapters( funcType );
	1011	mutateAll( funcType->get_returnVals(), *this );
	1012	mutateAll( funcType->get_parameters(), *this );
[51b7345]	1013
[01aeade]	1014	scopeTyVars = oldtyVars;
	1015	return funcType;
	1016	}
[51b7345]	1017
	1018	////////////////////////////////////////// Pass3 ////////////////////////////////////////////////////
	1019
[01aeade]	1020	template< typename DeclClass >
	1021	DeclClass * Pass3::handleDecl( DeclClass decl, Type type ) {
	1022	TyVarMap oldtyVars = scopeTyVars;
	1023	makeTyVarMap( type, scopeTyVars );
[51b7345]	1024
[01aeade]	1025	DeclClass ret = static_cast< DeclClass >( Mutator::mutate( decl ) );
	1026	ScrubTyVars::scrub( decl, scopeTyVars );
[6c3744e]	1027
[01aeade]	1028	scopeTyVars = oldtyVars;
	1029	return ret;
	1030	}
[6c3744e]	1031
[01aeade]	1032	ObjectDecl * Pass3::mutate( ObjectDecl *objectDecl ) {
	1033	return handleDecl( objectDecl, objectDecl->get_type() );
	1034	}
[6c3744e]	1035
[01aeade]	1036	DeclarationWithType * Pass3::mutate( FunctionDecl *functionDecl ) {
	1037	return handleDecl( functionDecl, functionDecl->get_functionType() );
	1038	}
[6c3744e]	1039
[01aeade]	1040	TypedefDecl * Pass3::mutate( TypedefDecl *typedefDecl ) {
	1041	return handleDecl( typedefDecl, typedefDecl->get_base() );
	1042	}
[6c3744e]	1043
[01aeade]	1044	TypeDecl * Pass3::mutate( TypeDecl *typeDecl ) {
[f8b961b]	1045	// Initializer *init = 0;
	1046	// std::list< Expression *> designators;
	1047	// scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
	1048	// if ( typeDecl->get_base() ) {
	1049	// init = new SimpleInit( new SizeofExpr( handleDecl( typeDecl, typeDecl->get_base() ) ), designators );
	1050	// }
	1051	// return new ObjectDecl( typeDecl->get_name(), Declaration::Extern, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::UnsignedInt ), init );
[51b7345]	1052
[01aeade]	1053	scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
	1054	return Mutator::mutate( typeDecl );
	1055	}
[51b7345]	1056
[01aeade]	1057	Type * Pass3::mutate( PointerType *pointerType ) {
	1058	TyVarMap oldtyVars = scopeTyVars;
	1059	makeTyVarMap( pointerType, scopeTyVars );
[51b7345]	1060
[01aeade]	1061	Type *ret = Mutator::mutate( pointerType );
[51b7345]	1062
[01aeade]	1063	scopeTyVars = oldtyVars;
	1064	return ret;
	1065	}
[6c3744e]	1066
[01aeade]	1067	Type * Pass3::mutate( FunctionType *functionType ) {
	1068	TyVarMap oldtyVars = scopeTyVars;
	1069	makeTyVarMap( functionType, scopeTyVars );
[51b7345]	1070
[01aeade]	1071	Type *ret = Mutator::mutate( functionType );
[51b7345]	1072
[01aeade]	1073	scopeTyVars = oldtyVars;
	1074	return ret;
[6c3744e]	1075	}
[51b7345]	1076
[01aeade]	1077	Statement Pass3::mutate( DeclStmt declStmt ) {
	1078	if ( ObjectDecl objectDecl = dynamic_cast< ObjectDecl >( declStmt->get_decl() ) ) {
[ffad73a]	1079	if ( isPolyType( objectDecl->get_type(), scopeTyVars ) ) {
[e01559c]	1080	// change initialization of a polymorphic value object
	1081	// to allocate storage with alloca
[ffad73a]	1082	Type *declType = objectDecl->get_type();
[01aeade]	1083	UntypedExpr *alloc = new UntypedExpr( new NameExpr( "__builtin_alloca" ) );
[ffad73a]	1084	alloc->get_args().push_back( new NameExpr( sizeofName( declType ) ) );
[e01559c]	1085
	1086	delete objectDecl->get_init();
	1087
	1088	std::list<Expression*> designators;
	1089	objectDecl->set_init( new SingleInit( alloc, designators ) );
[01aeade]	1090	}
	1091	}
	1092	return Mutator::mutate( declStmt );
	1093	}
	1094	} // anonymous namespace
[51b7345]	1095	} // namespace GenPoly
[01aeade]	1096
[51587aa]	1097	// Local Variables: //
	1098	// tab-width: 4 //
	1099	// mode: c++ //
	1100	// compile-command: "make install" //
	1101	// End: //

Note: See TracBrowser for help on using the repository browser.

Download in other formats: