source: src/GenPoly/Box.cc@ baf7fee

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors ctor deferred_resn demangler enum forall-pointer-decay gc_noraii jacob/cs343-translation jenkins-sandbox memory new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum resolv-new string with_gc
Last change on this file since baf7fee was 000b914, checked in by Rob Schluntz <rschlunt@…>, 10 years ago

Merge branch 'master' of plg.uwaterloo.ca:/u/cforall/software/cfa/cfa-cc
  • Property mode set to 100644
File size: 48.1 KB
RevLine 
[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
[bdf1954]11// Last Modified By : Rob Schluntz
[f2b2029]12// Last Modified On : Wed Dec 02 11:52:37 2015
13// Update Count : 201
[51587aa]14//
[51b73452]15
16#include <set>
[b1a6d6b]17#include <stack>
[51b73452]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
[51b73452]30#include "SynTree/Type.h"
31#include "SynTree/Expression.h"
32#include "SynTree/Initializer.h"
33#include "SynTree/Statement.h"
34#include "SynTree/Mutator.h"
[68cd1ce]35
[51b73452]36#include "ResolvExpr/TypeEnvironment.h"
[68cd1ce]37
[51b73452]38#include "SymTab/Mangler.h"
39
40#include "SemanticError.h"
41#include "UniqueName.h"
42#include "utility.h"
43
44#include <ext/functional> // temporary
45
46namespace GenPoly {
[01aeade]47 namespace {
48 const std::list<Label> noLabels;
49
[e56cfdb0]50 FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars );
51
[f8b961b]52 /// 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]53 class Pass1 : public PolyMutator {
54 public:
55 Pass1();
56 virtual Expression *mutate( ApplicationExpr *appExpr );
57 virtual Expression *mutate( AddressExpr *addrExpr );
58 virtual Expression *mutate( UntypedExpr *expr );
59 virtual DeclarationWithType* mutate( FunctionDecl *functionDecl );
60 virtual TypeDecl *mutate( TypeDecl *typeDecl );
61 virtual Expression *mutate( CommaExpr *commaExpr );
62 virtual Expression *mutate( ConditionalExpr *condExpr );
63 virtual Statement *mutate(ReturnStmt *catchStmt);
64 virtual Type *mutate( PointerType *pointerType );
65 virtual Type *mutate( FunctionType *pointerType );
[51b73452]66
[01aeade]67 virtual void doBeginScope();
68 virtual void doEndScope();
69 private:
70 void passTypeVars( ApplicationExpr *appExpr, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars );
71 Expression *addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg );
72 Expression *addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, std::string typeName, std::list< Expression *>::iterator &arg );
73 Expression *applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars );
74 void boxParam( Type *formal, Expression *&arg, const TyVarMap &exprTyVars );
75 void boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars );
76 void addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars );
77 void findAssignOps( const std::list< TypeDecl *> &forall );
78 void passAdapters( ApplicationExpr *appExpr, FunctionType *functionType, const TyVarMap &exprTyVars );
79 FunctionDecl *makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars );
80 Expression *handleIntrinsics( ApplicationExpr *appExpr );
81 ObjectDecl *makeTemporary( Type *type );
[c29d9ce]82
[e56cfdb0]83 typedef std::map< std::string, DeclarationWithType *> AdapterMap;
[c29d9ce]84 std::map< std::string, DeclarationWithType *> assignOps;
[01aeade]85 std::stack< AdapterMap > adapters;
86 DeclarationWithType *retval;
87 bool useRetval;
88 UniqueName tempNamer;
89 };
90
[f8b961b]91 /// Moves polymorphic returns in function types to pointer-type parameters, adds type size and assertion parameters to parameter lists as well
[01aeade]92 class Pass2 : public PolyMutator {
93 public:
94 Pass2();
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 );
[51b73452]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 ) {
136 Pass1 pass1;
137 Pass2 pass2;
138 Pass3 pass3;
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 ) {
157 if ( isPolyVal( (*retval)->get_type(), tyVars ) ) {
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 ) {
[ed1065c]166 if ( isPolyVal( (*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
[01aeade]183 Pass1::Pass1()
184 : useRetval( false ), tempNamer( "_temp" ) {
[e56cfdb0]185 adapters.push(AdapterMap());
[01aeade]186 }
187
[f2b2029]188 // returns true if the given declaration is: (*?=?)(T *, T) for some T (return not checked, but maybe should be)
[01aeade]189 bool checkAssignment( DeclarationWithType *decl, std::string &name ) {
190 if ( decl->get_name() == "?=?" ) {
191 if ( PointerType *ptrType = dynamic_cast< PointerType *>( decl->get_type() ) ) {
192 if ( FunctionType *funType = dynamic_cast< FunctionType *>( ptrType->get_base() ) ) {
193 if ( funType->get_parameters().size() == 2 ) {
194 if ( PointerType *pointer = dynamic_cast< PointerType *>( funType->get_parameters().front()->get_type() ) ) {
195 if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( pointer->get_base() ) ) {
196 name = typeInst->get_name();
197 return true;
198 } // if
199 } // if
200 } // if
201 } // if
202 } // if
203 } // if
204 return false;
205 }
206
207 void Pass1::findAssignOps( const std::list< TypeDecl *> &forall ) {
[ed1065c]208 // what if a nested function uses an assignment operator?
209 // assignOps.clear();
[01aeade]210 for ( std::list< TypeDecl *>::const_iterator i = forall.begin(); i != forall.end(); ++i ) {
211 for ( std::list< DeclarationWithType *>::const_iterator assert = (*i)->get_assertions().begin(); assert != (*i)->get_assertions().end(); ++assert ) {
212 std::string typeName;
213 if ( checkAssignment( *assert, typeName ) ) {
214 assignOps[ typeName ] = *assert;
215 } // if
216 } // for
217 } // for
218 }
219
[82dd287]220 DeclarationWithType *Pass1::mutate( FunctionDecl *functionDecl ) {
[e56cfdb0]221 if ( functionDecl->get_statements() ) { // empty routine body ?
222 doBeginScope();
[01aeade]223 TyVarMap oldtyVars = scopeTyVars;
[ed1065c]224 std::map< std::string, DeclarationWithType *> oldassignOps = assignOps;
[01aeade]225 DeclarationWithType *oldRetval = retval;
226 bool oldUseRetval = useRetval;
[e56cfdb0]227
228 // process polymorphic return value
[01aeade]229 retval = 0;
230 std::string typeName;
231 if ( isPolyRet( functionDecl->get_functionType(), typeName ) && functionDecl->get_linkage() == LinkageSpec::Cforall ) {
232 retval = functionDecl->get_functionType()->get_returnVals().front();
[51b73452]233
[01aeade]234 // give names to unnamed return values
235 if ( retval->get_name() == "" ) {
236 retval->set_name( "_retparm" );
237 retval->set_linkage( LinkageSpec::C );
238 } // if
239 } // if
240
[e56cfdb0]241 FunctionType *functionType = functionDecl->get_functionType();
[01aeade]242 makeTyVarMap( functionDecl->get_functionType(), scopeTyVars );
243 findAssignOps( functionDecl->get_functionType()->get_forall() );
[e56cfdb0]244
245 std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
246 std::list< FunctionType *> functions;
247 for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
248 for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
249 findFunction( (*assert)->get_type(), functions, scopeTyVars, needsAdapter );
250 } // for
251 } // for
252 for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
253 findFunction( (*arg)->get_type(), functions, scopeTyVars, needsAdapter );
254 } // for
255 AdapterMap & adapters = Pass1::adapters.top();
256 for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
[bdf1954]257 std::string mangleName = mangleAdapterName( *funType, scopeTyVars );
[e56cfdb0]258 if ( adapters.find( mangleName ) == adapters.end() ) {
259 std::string adapterName = makeAdapterName( mangleName );
260 adapters.insert( std::pair< std::string, DeclarationWithType *>( mangleName, new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) ) );
261 } // if
262 } // for
263
[01aeade]264 functionDecl->set_statements( functionDecl->get_statements()->acceptMutator( *this ) );
[51b73452]265
[01aeade]266 scopeTyVars = oldtyVars;
[ed1065c]267 assignOps = oldassignOps;
[e56cfdb0]268 // std::cerr << "end FunctionDecl: ";
269 // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
270 // std::cerr << i->first << " ";
271 // }
272 // std::cerr << "\n";
[01aeade]273 retval = oldRetval;
274 useRetval = oldUseRetval;
[e56cfdb0]275 doEndScope();
[01aeade]276 } // if
277 return functionDecl;
278 }
[6c3744e]279
[01aeade]280 TypeDecl *Pass1::mutate( TypeDecl *typeDecl ) {
[51b73452]281/// std::cerr << "add " << typeDecl->get_name() << "\n";
[01aeade]282 scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
283 return Mutator::mutate( typeDecl );
284 }
[6c3744e]285
[01aeade]286 Expression *Pass1::mutate( CommaExpr *commaExpr ) {
287 bool oldUseRetval = useRetval;
288 useRetval = false;
289 commaExpr->set_arg1( maybeMutate( commaExpr->get_arg1(), *this ) );
290 useRetval = oldUseRetval;
291 commaExpr->set_arg2( maybeMutate( commaExpr->get_arg2(), *this ) );
292 return commaExpr;
293 }
[6c3744e]294
[01aeade]295 Expression *Pass1::mutate( ConditionalExpr *condExpr ) {
296 bool oldUseRetval = useRetval;
297 useRetval = false;
298 condExpr->set_arg1( maybeMutate( condExpr->get_arg1(), *this ) );
299 useRetval = oldUseRetval;
300 condExpr->set_arg2( maybeMutate( condExpr->get_arg2(), *this ) );
301 condExpr->set_arg3( maybeMutate( condExpr->get_arg3(), *this ) );
302 return condExpr;
[6c3744e]303
[01aeade]304 }
[6c3744e]305
[01aeade]306 void Pass1::passTypeVars( ApplicationExpr *appExpr, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) {
307 for ( TyVarMap::const_iterator tyParm = exprTyVars.begin(); tyParm != exprTyVars.end(); ++tyParm ) {
308 ResolvExpr::EqvClass eqvClass;
309 assert( env );
310 if ( tyParm->second == TypeDecl::Any ) {
311 Type *concrete = env->lookup( tyParm->first );
312 if ( concrete ) {
313 arg = appExpr->get_args().insert( arg, new SizeofExpr( concrete->clone() ) );
314 arg++;
315 } else {
316 throw SemanticError( "unbound type variable in application ", appExpr );
317 } // if
318 } // if
319 } // for
320 }
[6c3744e]321
[01aeade]322 ObjectDecl *Pass1::makeTemporary( Type *type ) {
[68cd1ce]323 ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, type, 0 );
[01aeade]324 stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
325 return newObj;
326 }
[6c3744e]327
[01aeade]328 TypeInstType *isPolyType( Type *type, const TypeSubstitution *env, const TyVarMap &tyVars ) {
329 if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( type ) ) {
330 if ( env ) {
331 if ( Type *newType = env->lookup( typeInst->get_name() ) ) {
332 return isPolyType( newType, env, tyVars );
333 } // if
334 } // if
335 if ( tyVars.find( typeInst->get_name() ) != tyVars.end() ) {
336 return typeInst;
337 } else {
338 return 0;
339 } // if
340 } else {
341 return 0;
342 } // if
343 }
[6c3744e]344
[01aeade]345 Expression *Pass1::addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ) {
346 if ( useRetval ) {
347 assert( retval );
348 arg = appExpr->get_args().insert( arg, new VariableExpr( retval ) );
349 arg++;
350 } else {
351 ObjectDecl *newObj = makeTemporary( retType->clone() );
352 Expression *paramExpr = new VariableExpr( newObj );
353 if ( ! isPolyType( newObj->get_type(), env, scopeTyVars ) ) {
354 paramExpr = new AddressExpr( paramExpr );
355 } // if
356 arg = appExpr->get_args().insert( arg, paramExpr );
357 arg++;
[51b73452]358/// stmtsToAdd.push_back( new ExprStmt( noLabels, appExpr ) );
[01aeade]359 CommaExpr *commaExpr = new CommaExpr( appExpr, new VariableExpr( newObj ) );
360 commaExpr->set_env( appExpr->get_env() );
361 appExpr->set_env( 0 );
362 return commaExpr;
363 } // if
364 return appExpr;
365 }
[6c3744e]366
[01aeade]367 Expression *Pass1::addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, std::string typeName, std::list< Expression *>::iterator &arg ) {
368 ResolvExpr::EqvClass eqvClass;
369 assert( env );
370 Type *concrete = env->lookup( typeName );
371 if ( concrete == 0 ) {
372 throw SemanticError( "Unbound type variable " + typeName + " in ", appExpr );
373 } // if
374 return addRetParam( appExpr, function, concrete, arg );
375 }
[6c3744e]376
[01aeade]377 Expression *Pass1::applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) {
378 Expression *ret = appExpr;
379 if ( ! function->get_returnVals().empty() && isPolyVal( function->get_returnVals().front()->get_type(), tyVars ) ) {
380 ret = addRetParam( appExpr, function, function->get_returnVals().front()->get_type(), arg );
381 } // if
[bdf1954]382 std::string mangleName = mangleAdapterName( function, tyVars );
[01aeade]383 std::string adapterName = makeAdapterName( mangleName );
[b1a6d6b]384
[01aeade]385 appExpr->get_args().push_front( appExpr->get_function() );
386 appExpr->set_function( new NameExpr( adapterName ) );
[51b73452]387
[01aeade]388 return ret;
389 }
[6c3744e]390
[01aeade]391 void Pass1::boxParam( Type *param, Expression *&arg, const TyVarMap &exprTyVars ) {
392 assert( ! arg->get_results().empty() );
[a32b204]393/// if ( ! dynamic_cast< PointerType *>( arg->get_results().front() ) ) {
[01aeade]394 TypeInstType *typeInst = dynamic_cast< TypeInstType *>( param );
395 if ( typeInst && exprTyVars.find( typeInst->get_name() ) != exprTyVars.end() ) {
396 if ( dynamic_cast< TypeInstType *>( arg->get_results().front() ) ) {
397 // if the argument's type is a type parameter, we don't need to box again!
398 return;
399 } else if ( arg->get_results().front()->get_isLvalue() ) {
400 // VariableExpr and MemberExpr are lvalues
401 arg = new AddressExpr( arg );
402 } else {
[68cd1ce]403 ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, arg->get_results().front()->clone(), 0 );
[f6d7e0f]404 newObj->get_type()->get_qualifiers() = Type::Qualifiers(); // TODO: is this right???
[01aeade]405 stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
406 UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
407 assign->get_args().push_back( new VariableExpr( newObj ) );
408 assign->get_args().push_back( arg );
409 stmtsToAdd.push_back( new ExprStmt( noLabels, assign ) );
410 arg = new AddressExpr( new VariableExpr( newObj ) );
411 } // if
412 } // if
[51b73452]413/// }
[01aeade]414 }
[6c3744e]415
[01aeade]416 void addCast( Expression *&actual, Type *formal, const TyVarMap &tyVars ) {
417 Type *newType = formal->clone();
418 std::list< FunctionType *> functions;
419 // instead of functions needing adapters, this really ought to look for
420 // any function mentioning a polymorphic type
421 findAndReplaceFunction( newType, functions, tyVars, needsAdapter );
422 if ( ! functions.empty() ) {
423 actual = new CastExpr( actual, newType );
424 } else {
425 delete newType;
426 } // if
427 }
[6c3744e]428
[01aeade]429 void Pass1::boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) {
[51b73452]430/// std::cout << "function is ";
431/// function->print( std::cout );
[01aeade]432 for ( std::list< DeclarationWithType *>::const_iterator param = function->get_parameters().begin(); param != function->get_parameters().end(); ++param, ++arg ) {
[51b73452]433/// std::cout << "parameter is ";
[b1a6d6b]434/// (*param)->print( std::fcout );
[51b73452]435/// std::cout << std::endl << "argument is ";
436/// (*arg)->print( std::cout );
[01aeade]437 assert( arg != appExpr->get_args().end() );
438 addCast( *arg, (*param)->get_type(), exprTyVars );
439 boxParam( (*param)->get_type(), *arg, exprTyVars );
440 } // for
441 }
[6c3744e]442
[01aeade]443 void Pass1::addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) {
444 std::list< Expression *>::iterator cur = arg;
445 for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
446 for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
447 InferredParams::const_iterator inferParam = appExpr->get_inferParams().find( (*assert)->get_uniqueId() );
[698664b3]448 assert( inferParam != appExpr->get_inferParams().end() && "NOTE: Explicit casts of polymorphic functions to compatible monomorphic functions are currently unsupported" );
[01aeade]449 Expression *newExpr = inferParam->second.expr->clone();
450 addCast( newExpr, (*assert)->get_type(), tyVars );
451 boxParam( (*assert)->get_type(), newExpr, tyVars );
452 appExpr->get_args().insert( cur, newExpr );
453 } // for
454 } // for
455 }
[6c3744e]456
[01aeade]457 void makeRetParm( FunctionType *funcType ) {
458 DeclarationWithType *retParm = funcType->get_returnVals().front();
[6c3744e]459
[01aeade]460 // make a new parameter that is a pointer to the type of the old return value
461 retParm->set_type( new PointerType( Type::Qualifiers(), retParm->get_type() ) );
462 funcType->get_parameters().push_front( retParm );
[6c3744e]463
[01aeade]464 // we don't need the return value any more
465 funcType->get_returnVals().clear();
466 }
[6c3744e]467
[01aeade]468 FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars ) {
469 // actually make the adapter type
470 FunctionType *adapter = adaptee->clone();
471 if ( ! adapter->get_returnVals().empty() && isPolyVal( adapter->get_returnVals().front()->get_type(), tyVars ) ) {
472 makeRetParm( adapter );
473 } // if
[68cd1ce]474 adapter->get_parameters().push_front( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ) );
[01aeade]475 return adapter;
476 }
[6c3744e]477
[01aeade]478 Expression *makeAdapterArg( DeclarationWithType *param, DeclarationWithType *arg, DeclarationWithType *realParam, const TyVarMap &tyVars ) {
479 assert( param );
480 assert( arg );
[51b73452]481/// std::cout << "arg type is ";
482/// arg->get_type()->print( std::cout );
483/// std::cout << "param type is ";
484/// param->get_type()->print( std::cout );
485/// std::cout << " tyVars are: ";
486/// printTyVarMap( std::cout, tyVars );
[01aeade]487 if ( isPolyVal( realParam->get_type(), tyVars ) ) {
[6c3744e]488/// if ( dynamic_cast< PointerType *>( arg->get_type() ) ) {
[51b73452]489/// return new CastExpr( new VariableExpr( param ), arg->get_type()->clone() );
490/// } else {
[e56cfdb0]491 if ( dynamic_cast<TypeInstType *>(arg->get_type()) == NULL ) {
492 UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) );
493 deref->get_args().push_back( new CastExpr( new VariableExpr( param ), new PointerType( Type::Qualifiers(), arg->get_type()->clone() ) ) );
494 deref->get_results().push_back( arg->get_type()->clone() );
495 return deref;
496 } // if
[51b73452]497/// }
[01aeade]498 } // if
499 return new VariableExpr( param );
500 }
[6c3744e]501
[01aeade]502 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 ) {
503 UniqueName paramNamer( "_p" );
504 for ( ; param != paramEnd; ++param, ++arg, ++realParam ) {
505 if ( (*param)->get_name() == "" ) {
506 (*param)->set_name( paramNamer.newName() );
507 (*param)->set_linkage( LinkageSpec::C );
508 } // if
509 adapteeApp->get_args().push_back( makeAdapterArg( *param, *arg, *realParam, tyVars ) );
510 } // for
511 }
[6c3744e]512
[b1a6d6b]513
514
[01aeade]515 FunctionDecl *Pass1::makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ) {
516 FunctionType *adapterType = makeAdapterType( adaptee, tyVars );
517 adapterType = ScrubTyVars::scrub( adapterType, tyVars );
518 DeclarationWithType *adapteeDecl = adapterType->get_parameters().front();
519 adapteeDecl->set_name( "_adaptee" );
520 ApplicationExpr *adapteeApp = new ApplicationExpr( new CastExpr( new VariableExpr( adapteeDecl ), new PointerType( Type::Qualifiers(), realType ) ) );
521 Statement *bodyStmt;
[51b73452]522
[01aeade]523 std::list< TypeDecl *>::iterator tyArg = realType->get_forall().begin();
524 std::list< TypeDecl *>::iterator tyParam = adapterType->get_forall().begin();
525 std::list< TypeDecl *>::iterator realTyParam = adaptee->get_forall().begin();
526 for ( ; tyParam != adapterType->get_forall().end(); ++tyArg, ++tyParam, ++realTyParam ) {
527 assert( tyArg != realType->get_forall().end() );
528 std::list< DeclarationWithType *>::iterator assertArg = (*tyArg)->get_assertions().begin();
529 std::list< DeclarationWithType *>::iterator assertParam = (*tyParam)->get_assertions().begin();
530 std::list< DeclarationWithType *>::iterator realAssertParam = (*realTyParam)->get_assertions().begin();
531 for ( ; assertParam != (*tyParam)->get_assertions().end(); ++assertArg, ++assertParam, ++realAssertParam ) {
532 assert( assertArg != (*tyArg)->get_assertions().end() );
533 adapteeApp->get_args().push_back( makeAdapterArg( *assertParam, *assertArg, *realAssertParam, tyVars ) );
534 } // for
535 } // for
[51b73452]536
[01aeade]537 std::list< DeclarationWithType *>::iterator arg = realType->get_parameters().begin();
538 std::list< DeclarationWithType *>::iterator param = adapterType->get_parameters().begin();
539 std::list< DeclarationWithType *>::iterator realParam = adaptee->get_parameters().begin();
540 param++; // skip adaptee parameter
541 if ( realType->get_returnVals().empty() ) {
542 addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
543 bodyStmt = new ExprStmt( noLabels, adapteeApp );
544 } else if ( isPolyVal( adaptee->get_returnVals().front()->get_type(), tyVars ) ) {
545 if ( (*param)->get_name() == "" ) {
546 (*param)->set_name( "_ret" );
547 (*param)->set_linkage( LinkageSpec::C );
548 } // if
549 UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
550 UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) );
551 deref->get_args().push_back( new CastExpr( new VariableExpr( *param++ ), new PointerType( Type::Qualifiers(), realType->get_returnVals().front()->get_type()->clone() ) ) );
552 assign->get_args().push_back( deref );
553 addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
554 assign->get_args().push_back( adapteeApp );
555 bodyStmt = new ExprStmt( noLabels, assign );
556 } else {
557 // adapter for a function that returns a monomorphic value
558 addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
559 bodyStmt = new ReturnStmt( noLabels, adapteeApp );
560 } // if
561 CompoundStmt *adapterBody = new CompoundStmt( noLabels );
562 adapterBody->get_kids().push_back( bodyStmt );
563 std::string adapterName = makeAdapterName( mangleName );
[de62360d]564 return new FunctionDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, adapterType, adapterBody, false, false );
[01aeade]565 }
[6c3744e]566
[c29d9ce]567 void Pass1::passAdapters( ApplicationExpr * appExpr, FunctionType * functionType, const TyVarMap & exprTyVars ) {
[e497c1d]568 // collect a list of function types passed as parameters or implicit parameters (assertions)
[01aeade]569 std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
570 std::list< FunctionType *> functions;
571 for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
572 for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
573 findFunction( (*assert)->get_type(), functions, exprTyVars, needsAdapter );
574 } // for
575 } // for
576 for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
577 findFunction( (*arg)->get_type(), functions, exprTyVars, needsAdapter );
578 } // for
[e497c1d]579
[e56cfdb0]580 // parameter function types for which an appropriate adapter has been generated. we cannot use the types
581 // after applying substitutions, since two different parameter types may be unified to the same type
[01aeade]582 std::set< std::string > adaptersDone;
[e497c1d]583
[01aeade]584 for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
[c29d9ce]585 FunctionType *originalFunction = (*funType)->clone();
[01aeade]586 FunctionType *realFunction = (*funType)->clone();
587 std::string mangleName = SymTab::Mangler::mangle( realFunction );
[e497c1d]588
[e56cfdb0]589 // only attempt to create an adapter or pass one as a parameter if we haven't already done so for this
590 // pre-substitution parameter function type.
[01aeade]591 if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
[e497c1d]592 adaptersDone.insert( adaptersDone.begin(), mangleName );
593
[e56cfdb0]594 // apply substitution to type variables to figure out what the adapter's type should look like
[e497c1d]595 assert( env );
596 env->apply( realFunction );
[bdf1954]597 mangleName = SymTab::Mangler::mangle( realFunction );
598 mangleName += makePolyMonoSuffix( originalFunction, exprTyVars );
[e497c1d]599
[e56cfdb0]600 AdapterMap & adapters = Pass1::adapters.top();
601 AdapterMap::iterator adapter = adapters.find( mangleName );
602 if ( adapter == adapters.end() ) {
603 // adapter has not been created yet in the current scope, so define it
604 FunctionDecl *newAdapter = makeAdapter( *funType, realFunction, mangleName, exprTyVars );
605 adapter = adapters.insert( adapters.begin(), std::pair< std::string, DeclarationWithType *>( mangleName, newAdapter ) );
606 stmtsToAdd.push_back( new DeclStmt( noLabels, newAdapter ) );
[c29d9ce]607 } // if
[e56cfdb0]608 assert( adapter != adapters.end() );
609
610 // add the appropriate adapter as a parameter
611 appExpr->get_args().push_front( new VariableExpr( adapter->second ) );
[01aeade]612 } // if
613 } // for
[e56cfdb0]614 } // passAdapters
[6c3744e]615
[01aeade]616 TypeInstType *isPolyPtr( Type *type, const TypeSubstitution *env, const TyVarMap &tyVars ) {
617 if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) {
618 return isPolyType( ptr->get_base(), env, tyVars );
619 } else if ( env ) {
620 if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( type ) ) {
621 if ( Type *newType = env->lookup( typeInst->get_name() ) ) {
622 return isPolyPtr( newType, env, tyVars );
623 } // if
624 } // if
[6c3744e]625 } // if
[01aeade]626 return 0;
627 }
628
629 TypeInstType *isPolyPtrPtr( Type *type, const TypeSubstitution *env, const TyVarMap &tyVars ) {
630 if ( PointerType *ptr = dynamic_cast< PointerType *>( type ) ) {
631 return isPolyPtr( ptr->get_base(), env, tyVars );
632 } else if ( env ) {
633 if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( type ) ) {
634 if ( Type *newType = env->lookup( typeInst->get_name() ) ) {
635 return isPolyPtrPtr( newType, env, tyVars );
636 } // if
637 } // if
[6c3744e]638 } // if
[01aeade]639 return 0;
640 }
641
642 Expression *makeIncrDecrExpr( ApplicationExpr *appExpr, std::string polyName, bool isIncr ) {
643 NameExpr *opExpr;
644 if ( isIncr ) {
645 opExpr = new NameExpr( "?+=?" );
646 } else {
647 opExpr = new NameExpr( "?-=?" );
[6c3744e]648 } // if
[01aeade]649 UntypedExpr *addAssign = new UntypedExpr( opExpr );
650 if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) {
651 addAssign->get_args().push_back( address->get_arg() );
652 } else {
653 addAssign->get_args().push_back( appExpr->get_args().front() );
[6c3744e]654 } // if
[01aeade]655 addAssign->get_args().push_back( new NameExpr( polyName ) );
656 addAssign->get_results().front() = appExpr->get_results().front()->clone();
657 if ( appExpr->get_env() ) {
658 addAssign->set_env( appExpr->get_env() );
[6c3744e]659 appExpr->set_env( 0 );
660 } // if
[01aeade]661 appExpr->get_args().clear();
662 delete appExpr;
663 return addAssign;
664 }
665
666 Expression *Pass1::handleIntrinsics( ApplicationExpr *appExpr ) {
667 if ( VariableExpr *varExpr = dynamic_cast< VariableExpr *>( appExpr->get_function() ) ) {
668 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic ) {
669 if ( varExpr->get_var()->get_name() == "?[?]" ) {
670 assert( ! appExpr->get_results().empty() );
671 assert( appExpr->get_args().size() == 2 );
672 TypeInstType *typeInst1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), env, scopeTyVars );
673 TypeInstType *typeInst2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), env, scopeTyVars );
[f2b2029]674 assert( ! typeInst1 || ! typeInst2 ); // the arguments cannot both be polymorphic pointers
[01aeade]675 UntypedExpr *ret = 0;
[f2b2029]676 if ( typeInst1 || typeInst2 ) { // one of the arguments is a polymorphic pointer
[01aeade]677 ret = new UntypedExpr( new NameExpr( "?+?" ) );
678 } // if
679 if ( typeInst1 ) {
680 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
681 multiply->get_args().push_back( appExpr->get_args().back() );
682 multiply->get_args().push_back( new NameExpr( typeInst1->get_name() ) );
683 ret->get_args().push_back( appExpr->get_args().front() );
684 ret->get_args().push_back( multiply );
685 } else if ( typeInst2 ) {
686 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
687 multiply->get_args().push_back( appExpr->get_args().front() );
688 multiply->get_args().push_back( new NameExpr( typeInst2->get_name() ) );
689 ret->get_args().push_back( multiply );
690 ret->get_args().push_back( appExpr->get_args().back() );
691 } // if
692 if ( typeInst1 || typeInst2 ) {
693 ret->get_results().push_front( appExpr->get_results().front()->clone() );
694 if ( appExpr->get_env() ) {
695 ret->set_env( appExpr->get_env() );
696 appExpr->set_env( 0 );
697 } // if
698 appExpr->get_args().clear();
699 delete appExpr;
700 return ret;
701 } // if
702 } else if ( varExpr->get_var()->get_name() == "*?" ) {
703 assert( ! appExpr->get_results().empty() );
704 assert( ! appExpr->get_args().empty() );
705 if ( isPolyType( appExpr->get_results().front(), env, scopeTyVars ) ) {
706 Expression *ret = appExpr->get_args().front();
707 delete ret->get_results().front();
708 ret->get_results().front() = appExpr->get_results().front()->clone();
709 if ( appExpr->get_env() ) {
710 ret->set_env( appExpr->get_env() );
711 appExpr->set_env( 0 );
712 } // if
713 appExpr->get_args().clear();
714 delete appExpr;
715 return ret;
716 } // if
717 } else if ( varExpr->get_var()->get_name() == "?++" || varExpr->get_var()->get_name() == "?--" ) {
718 assert( ! appExpr->get_results().empty() );
719 assert( appExpr->get_args().size() == 1 );
720 if ( TypeInstType *typeInst = isPolyPtr( appExpr->get_results().front(), env, scopeTyVars ) ) {
721 Type *tempType = appExpr->get_results().front()->clone();
722 if ( env ) {
723 env->apply( tempType );
724 } // if
725 ObjectDecl *newObj = makeTemporary( tempType );
726 VariableExpr *tempExpr = new VariableExpr( newObj );
727 UntypedExpr *assignExpr = new UntypedExpr( new NameExpr( "?=?" ) );
728 assignExpr->get_args().push_back( tempExpr->clone() );
729 if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) {
730 assignExpr->get_args().push_back( address->get_arg()->clone() );
731 } else {
732 assignExpr->get_args().push_back( appExpr->get_args().front()->clone() );
733 } // if
734 CommaExpr *firstComma = new CommaExpr( assignExpr, makeIncrDecrExpr( appExpr, typeInst->get_name(), varExpr->get_var()->get_name() == "?++" ) );
735 return new CommaExpr( firstComma, tempExpr );
736 } // if
737 } else if ( varExpr->get_var()->get_name() == "++?" || varExpr->get_var()->get_name() == "--?" ) {
738 assert( ! appExpr->get_results().empty() );
739 assert( appExpr->get_args().size() == 1 );
740 if ( TypeInstType *typeInst = isPolyPtr( appExpr->get_results().front(), env, scopeTyVars ) ) {
741 return makeIncrDecrExpr( appExpr, typeInst->get_name(), varExpr->get_var()->get_name() == "++?" );
742 } // if
743 } else if ( varExpr->get_var()->get_name() == "?+?" || varExpr->get_var()->get_name() == "?-?" ) {
744 assert( ! appExpr->get_results().empty() );
745 assert( appExpr->get_args().size() == 2 );
746 TypeInstType *typeInst1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), env, scopeTyVars );
747 TypeInstType *typeInst2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), env, scopeTyVars );
748 if ( typeInst1 && typeInst2 ) {
749 UntypedExpr *divide = new UntypedExpr( new NameExpr( "?/?" ) );
750 divide->get_args().push_back( appExpr );
751 divide->get_args().push_back( new NameExpr( typeInst1->get_name() ) );
752 divide->get_results().push_front( appExpr->get_results().front()->clone() );
753 if ( appExpr->get_env() ) {
754 divide->set_env( appExpr->get_env() );
755 appExpr->set_env( 0 );
756 } // if
757 return divide;
758 } else if ( typeInst1 ) {
759 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
760 multiply->get_args().push_back( appExpr->get_args().back() );
761 multiply->get_args().push_back( new NameExpr( typeInst1->get_name() ) );
762 appExpr->get_args().back() = multiply;
763 } else if ( typeInst2 ) {
764 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
765 multiply->get_args().push_back( appExpr->get_args().front() );
766 multiply->get_args().push_back( new NameExpr( typeInst2->get_name() ) );
767 appExpr->get_args().front() = multiply;
768 } // if
769 } else if ( varExpr->get_var()->get_name() == "?+=?" || varExpr->get_var()->get_name() == "?-=?" ) {
770 assert( ! appExpr->get_results().empty() );
771 assert( appExpr->get_args().size() == 2 );
772 TypeInstType *typeInst = isPolyPtr( appExpr->get_results().front(), env, scopeTyVars );
773 if ( typeInst ) {
774 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
775 multiply->get_args().push_back( appExpr->get_args().back() );
776 multiply->get_args().push_back( new NameExpr( typeInst->get_name() ) );
777 appExpr->get_args().back() = multiply;
778 } // if
779 } // if
780 return appExpr;
781 } // if
[6c3744e]782 } // if
[01aeade]783 return 0;
784 }
[6c3744e]785
[01aeade]786 Expression *Pass1::mutate( ApplicationExpr *appExpr ) {
[e56cfdb0]787 // std::cerr << "mutate appExpr: ";
788 // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
789 // std::cerr << i->first << " ";
790 // }
791 // std::cerr << "\n";
[01aeade]792 bool oldUseRetval = useRetval;
793 useRetval = false;
794 appExpr->get_function()->acceptMutator( *this );
795 mutateAll( appExpr->get_args(), *this );
796 useRetval = oldUseRetval;
[51b73452]797
[01aeade]798 assert( ! appExpr->get_function()->get_results().empty() );
799 PointerType *pointer = dynamic_cast< PointerType *>( appExpr->get_function()->get_results().front() );
800 assert( pointer );
801 FunctionType *function = dynamic_cast< FunctionType *>( pointer->get_base() );
802 assert( function );
[51b73452]803
[01aeade]804 if ( Expression *newExpr = handleIntrinsics( appExpr ) ) {
805 return newExpr;
806 } // if
[51b73452]807
[01aeade]808 Expression *ret = appExpr;
[51b73452]809
[01aeade]810 std::list< Expression *>::iterator arg = appExpr->get_args().begin();
811 std::list< Expression *>::iterator paramBegin = appExpr->get_args().begin();
[51b73452]812
[01aeade]813 std::string typeName;
814 if ( isPolyRet( function, typeName ) ) {
815 ret = addPolyRetParam( appExpr, function, typeName, arg );
816 } else if ( needsAdapter( function, scopeTyVars ) ) {
[e56cfdb0]817 // std::cerr << "needs adapter: ";
818 // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
819 // std::cerr << i->first << " ";
820 // }
821 // std::cerr << "\n";
[01aeade]822 // change the application so it calls the adapter rather than the passed function
823 ret = applyAdapter( appExpr, function, arg, scopeTyVars );
824 } // if
825 arg = appExpr->get_args().begin();
[51b73452]826
[01aeade]827 TyVarMap exprTyVars;
828 makeTyVarMap( function, exprTyVars );
[51b73452]829
[01aeade]830 passTypeVars( appExpr, arg, exprTyVars );
831 addInferredParams( appExpr, function, arg, exprTyVars );
[51b73452]832
[01aeade]833 arg = paramBegin;
[51b73452]834
[01aeade]835 boxParams( appExpr, function, arg, exprTyVars );
[6c3744e]836
[01aeade]837 passAdapters( appExpr, function, exprTyVars );
[6c3744e]838
[01aeade]839 return ret;
840 }
[6c3744e]841
[01aeade]842 Expression *Pass1::mutate( UntypedExpr *expr ) {
843 if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), env, scopeTyVars ) ) {
844 if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) {
845 if ( name->get_name() == "*?" ) {
846 Expression *ret = expr->get_args().front();
847 expr->get_args().clear();
848 delete expr;
849 return ret->acceptMutator( *this );
850 } // if
851 } // if
852 } // if
853 return PolyMutator::mutate( expr );
854 }
[6c3744e]855
[01aeade]856 Expression *Pass1::mutate( AddressExpr *addrExpr ) {
857 assert( ! addrExpr->get_arg()->get_results().empty() );
858 addrExpr->set_arg( mutateExpression( addrExpr->get_arg() ) );
859 if ( isPolyType( addrExpr->get_arg()->get_results().front(), env, scopeTyVars ) ) {
860 Expression *ret = addrExpr->get_arg();
861 delete ret->get_results().front();
862 ret->get_results().front() = addrExpr->get_results().front()->clone();
863 addrExpr->set_arg( 0 );
864 delete addrExpr;
865 return ret;
866 } else {
867 return addrExpr;
868 } // if
869 }
[6c3744e]870
[01aeade]871 Statement * Pass1::mutate(ReturnStmt *retStmt) {
[f2b2029]872 // by this point, a cast expr on a polymorphic return value is redundant
[01aeade]873 while ( CastExpr *castExpr = dynamic_cast< CastExpr *>( retStmt->get_expr() ) ) {
874 retStmt->set_expr( castExpr->get_arg() );
875 retStmt->get_expr()->set_env( castExpr->get_env() );
876 castExpr->set_env( 0 );
877 castExpr->set_arg( 0 );
878 delete castExpr;
879 }
880 if ( retval && retStmt->get_expr() ) {
881 assert( ! retStmt->get_expr()->get_results().empty() );
882 if ( retStmt->get_expr()->get_results().front()->get_isLvalue() ) {
[51b73452]883/// retStmt->set_expr( mutateExpression( retStmt->get_expr() ) );
[01aeade]884 TypeInstType *typeInst = dynamic_cast< TypeInstType *>( retval->get_type() );
885 assert( typeInst );
886 std::map< std::string, DeclarationWithType *>::const_iterator assignIter = assignOps.find( typeInst->get_name() );
887 if ( assignIter == assignOps.end() ) {
888 throw SemanticError( "Attempt to return dtype or ftype object in ", retStmt->get_expr() );
889 } // if
890 ApplicationExpr *assignExpr = new ApplicationExpr( new VariableExpr( assignIter->second ) );
891 Expression *retParm = new NameExpr( retval->get_name() );
892 retParm->get_results().push_back( new PointerType( Type::Qualifiers(), retval->get_type()->clone() ) );
893 assignExpr->get_args().push_back( retParm );
894 assignExpr->get_args().push_back( retStmt->get_expr() );
895 stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( assignExpr ) ) );
896 } else {
897 useRetval = true;
898 stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( retStmt->get_expr() ) ) );
899 useRetval = false;
900 } // if
901 retStmt->set_expr( 0 );
902 } else {
903 retStmt->set_expr( mutateExpression( retStmt->get_expr() ) );
904 } // if
905 return retStmt;
906 }
[6c3744e]907
[01aeade]908 Type * Pass1::mutate( PointerType *pointerType ) {
909 TyVarMap oldtyVars = scopeTyVars;
910 makeTyVarMap( pointerType, scopeTyVars );
[51b73452]911
[01aeade]912 Type *ret = Mutator::mutate( pointerType );
[51b73452]913
[01aeade]914 scopeTyVars = oldtyVars;
915 return ret;
916 }
[6c3744e]917
[01aeade]918 Type * Pass1::mutate( FunctionType *functionType ) {
919 TyVarMap oldtyVars = scopeTyVars;
920 makeTyVarMap( functionType, scopeTyVars );
[51b73452]921
[01aeade]922 Type *ret = Mutator::mutate( functionType );
[51b73452]923
[01aeade]924 scopeTyVars = oldtyVars;
925 return ret;
926 }
[51b73452]927
[01aeade]928 void Pass1::doBeginScope() {
[bdf1954]929 // push a copy of the current map
[e56cfdb0]930 adapters.push(adapters.top());
[01aeade]931 }
[b1a6d6b]932
[01aeade]933 void Pass1::doEndScope() {
934 adapters.pop();
935 }
[51b73452]936
937////////////////////////////////////////// Pass2 ////////////////////////////////////////////////////
938
[01aeade]939 Pass2::Pass2() {}
940
941 void Pass2::addAdapters( FunctionType *functionType ) {
942 std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
943 std::list< FunctionType *> functions;
944 for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
945 Type *orig = (*arg)->get_type();
946 findAndReplaceFunction( orig, functions, scopeTyVars, needsAdapter );
947 (*arg)->set_type( orig );
948 }
949 std::set< std::string > adaptersDone;
950 for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
[bdf1954]951 std::string mangleName = mangleAdapterName( *funType, scopeTyVars );
[01aeade]952 if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
953 std::string adapterName = makeAdapterName( mangleName );
[68cd1ce]954 paramList.push_front( new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) );
[01aeade]955 adaptersDone.insert( adaptersDone.begin(), mangleName );
956 }
957 }
[51b73452]958/// deleteAll( functions );
[01aeade]959 }
[6c3744e]960
[01aeade]961 template< typename DeclClass >
962 DeclClass * Pass2::handleDecl( DeclClass *decl, Type *type ) {
963 DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) );
[6c3744e]964
[01aeade]965 return ret;
966 }
[6c3744e]967
[01aeade]968 DeclarationWithType * Pass2::mutate( FunctionDecl *functionDecl ) {
969 return handleDecl( functionDecl, functionDecl->get_functionType() );
970 }
[6c3744e]971
[01aeade]972 ObjectDecl * Pass2::mutate( ObjectDecl *objectDecl ) {
973 return handleDecl( objectDecl, objectDecl->get_type() );
974 }
[6c3744e]975
[01aeade]976 TypeDecl * Pass2::mutate( TypeDecl *typeDecl ) {
977 scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
978 if ( typeDecl->get_base() ) {
979 return handleDecl( typeDecl, typeDecl->get_base() );
980 } else {
981 return Mutator::mutate( typeDecl );
982 }
983 }
[6c3744e]984
[01aeade]985 TypedefDecl * Pass2::mutate( TypedefDecl *typedefDecl ) {
986 return handleDecl( typedefDecl, typedefDecl->get_base() );
987 }
[6c3744e]988
[01aeade]989 Type * Pass2::mutate( PointerType *pointerType ) {
990 TyVarMap oldtyVars = scopeTyVars;
991 makeTyVarMap( pointerType, scopeTyVars );
[51b73452]992
[01aeade]993 Type *ret = Mutator::mutate( pointerType );
[51b73452]994
[01aeade]995 scopeTyVars = oldtyVars;
996 return ret;
997 }
[6c3744e]998
[01aeade]999 Type *Pass2::mutate( FunctionType *funcType ) {
1000 TyVarMap oldtyVars = scopeTyVars;
1001 makeTyVarMap( funcType, scopeTyVars );
[51b73452]1002
[01aeade]1003 std::string typeName;
1004 if ( isPolyRet( funcType, typeName ) ) {
1005 DeclarationWithType *ret = funcType->get_returnVals().front();
1006 ret->set_type( new PointerType( Type::Qualifiers(), ret->get_type() ) );
1007 funcType->get_parameters().push_front( ret );
1008 funcType->get_returnVals().pop_front();
1009 }
[51b73452]1010
[01aeade]1011 std::list< DeclarationWithType *>::iterator last = funcType->get_parameters().begin();
1012 std::list< DeclarationWithType *> inferredParams;
[68cd1ce]1013 ObjectDecl *newObj = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), 0 );
[f8b961b]1014// ObjectDecl *newFunPtr = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 );
[01aeade]1015 for ( std::list< TypeDecl *>::const_iterator tyParm = funcType->get_forall().begin(); tyParm != funcType->get_forall().end(); ++tyParm ) {
1016 ObjectDecl *thisParm;
[e56cfdb0]1017 // add all size parameters to parameter list
[01aeade]1018 if ( (*tyParm)->get_kind() == TypeDecl::Any ) {
1019 thisParm = newObj->clone();
1020 thisParm->set_name( (*tyParm)->get_name() );
1021 last = funcType->get_parameters().insert( last, thisParm );
1022 ++last;
1023 }
[e56cfdb0]1024 // move all assertions into parameter list
[01aeade]1025 for ( std::list< DeclarationWithType *>::iterator assert = (*tyParm)->get_assertions().begin(); assert != (*tyParm)->get_assertions().end(); ++assert ) {
[f8b961b]1026// *assert = (*assert)->acceptMutator( *this );
[01aeade]1027 inferredParams.push_back( *assert );
1028 }
1029 (*tyParm)->get_assertions().clear();
1030 }
1031 delete newObj;
1032 funcType->get_parameters().splice( last, inferredParams );
1033 addAdapters( funcType );
1034 mutateAll( funcType->get_returnVals(), *this );
1035 mutateAll( funcType->get_parameters(), *this );
[51b73452]1036
[01aeade]1037 scopeTyVars = oldtyVars;
1038 return funcType;
1039 }
[51b73452]1040
1041////////////////////////////////////////// Pass3 ////////////////////////////////////////////////////
1042
[01aeade]1043 template< typename DeclClass >
1044 DeclClass * Pass3::handleDecl( DeclClass *decl, Type *type ) {
1045 TyVarMap oldtyVars = scopeTyVars;
1046 makeTyVarMap( type, scopeTyVars );
[51b73452]1047
[01aeade]1048 DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) );
1049 ScrubTyVars::scrub( decl, scopeTyVars );
[6c3744e]1050
[01aeade]1051 scopeTyVars = oldtyVars;
1052 return ret;
1053 }
[6c3744e]1054
[01aeade]1055 ObjectDecl * Pass3::mutate( ObjectDecl *objectDecl ) {
1056 return handleDecl( objectDecl, objectDecl->get_type() );
1057 }
[6c3744e]1058
[01aeade]1059 DeclarationWithType * Pass3::mutate( FunctionDecl *functionDecl ) {
1060 return handleDecl( functionDecl, functionDecl->get_functionType() );
1061 }
[6c3744e]1062
[01aeade]1063 TypedefDecl * Pass3::mutate( TypedefDecl *typedefDecl ) {
1064 return handleDecl( typedefDecl, typedefDecl->get_base() );
1065 }
[6c3744e]1066
[01aeade]1067 TypeDecl * Pass3::mutate( TypeDecl *typeDecl ) {
[f8b961b]1068// Initializer *init = 0;
1069// std::list< Expression *> designators;
1070// scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
1071// if ( typeDecl->get_base() ) {
1072// init = new SimpleInit( new SizeofExpr( handleDecl( typeDecl, typeDecl->get_base() ) ), designators );
1073// }
1074// return new ObjectDecl( typeDecl->get_name(), Declaration::Extern, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::UnsignedInt ), init );
[51b73452]1075
[01aeade]1076 scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
1077 return Mutator::mutate( typeDecl );
1078 }
[51b73452]1079
[01aeade]1080 Type * Pass3::mutate( PointerType *pointerType ) {
1081 TyVarMap oldtyVars = scopeTyVars;
1082 makeTyVarMap( pointerType, scopeTyVars );
[51b73452]1083
[01aeade]1084 Type *ret = Mutator::mutate( pointerType );
[51b73452]1085
[01aeade]1086 scopeTyVars = oldtyVars;
1087 return ret;
1088 }
[6c3744e]1089
[01aeade]1090 Type * Pass3::mutate( FunctionType *functionType ) {
1091 TyVarMap oldtyVars = scopeTyVars;
1092 makeTyVarMap( functionType, scopeTyVars );
[51b73452]1093
[01aeade]1094 Type *ret = Mutator::mutate( functionType );
[51b73452]1095
[01aeade]1096 scopeTyVars = oldtyVars;
1097 return ret;
[6c3744e]1098 }
[51b73452]1099
[01aeade]1100 Statement *Pass3::mutate( DeclStmt *declStmt ) {
1101 if ( ObjectDecl *objectDecl = dynamic_cast< ObjectDecl *>( declStmt->get_decl() ) ) {
1102 if ( isPolyVal( objectDecl->get_type(), scopeTyVars ) ) {
[e01559c]1103 // change initialization of a polymorphic value object
1104 // to allocate storage with alloca
[01aeade]1105 TypeInstType *typeInst = dynamic_cast< TypeInstType *>( objectDecl->get_type() );
1106 assert( typeInst );
1107 UntypedExpr *alloc = new UntypedExpr( new NameExpr( "__builtin_alloca" ) );
1108 alloc->get_args().push_back( new NameExpr( typeInst->get_name() ) );
[e01559c]1109
1110 delete objectDecl->get_init();
1111
1112 std::list<Expression*> designators;
1113 objectDecl->set_init( new SingleInit( alloc, designators ) );
[01aeade]1114 }
1115 }
1116 return Mutator::mutate( declStmt );
1117 }
1118 } // anonymous namespace
[51b73452]1119} // namespace GenPoly
[01aeade]1120
[51587aa]1121// Local Variables: //
1122// tab-width: 4 //
1123// mode: c++ //
1124// compile-command: "make install" //
1125// End: //
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