source: src/GenPoly/Box.cc@ 083cf31

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 with_gc
Last change on this file since 083cf31 was ae63a18, checked in by Rob Schluntz <rschlunt@…>, 10 years ago

resolving conflicts
  • Property mode set to 100644
File size: 50.4 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//
[ae63a18]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
[ae63a18]12// Last Modified On : Fri Dec 18 14:53:08 2015
13// Update Count : 217
[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
[cdec5af]30#include "SynTree/Constant.h"
[51b73452]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
[51b73452]37#include "ResolvExpr/TypeEnvironment.h"
[68cd1ce]38
[51b73452]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
47namespace 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:
56 Pass1();
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 );
[ae63a18]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 );
[ae63a18]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
[ae63a18]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
[bdf1954]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 {
[ae63a18]169 name << "M";
[bdf1954]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
[f2b2029]187 // returns true if the given declaration is: (*?=?)(T *, T) for some T (return not checked, but maybe should be)
[01aeade]188 bool checkAssignment( DeclarationWithType *decl, std::string &name ) {
189 if ( decl->get_name() == "?=?" ) {
190 if ( PointerType *ptrType = dynamic_cast< PointerType *>( decl->get_type() ) ) {
191 if ( FunctionType *funType = dynamic_cast< FunctionType *>( ptrType->get_base() ) ) {
192 if ( funType->get_parameters().size() == 2 ) {
193 if ( PointerType *pointer = dynamic_cast< PointerType *>( funType->get_parameters().front()->get_type() ) ) {
194 if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( pointer->get_base() ) ) {
[cf16f94]195 if ( TypeInstType *typeInst2 = dynamic_cast< TypeInstType *>( funType->get_parameters().back()->get_type() ) ) {
196 if ( typeInst->get_name() == typeInst2->get_name() ) {
197 name = typeInst->get_name();
198 return true;
199 } // if
200 } // if
[01aeade]201 } // if
202 } // if
203 } // if
204 } // if
205 } // if
206 } // if
207 return false;
208 }
209
210 void Pass1::findAssignOps( const std::list< TypeDecl *> &forall ) {
[ed1065c]211 // what if a nested function uses an assignment operator?
212 // assignOps.clear();
[01aeade]213 for ( std::list< TypeDecl *>::const_iterator i = forall.begin(); i != forall.end(); ++i ) {
214 for ( std::list< DeclarationWithType *>::const_iterator assert = (*i)->get_assertions().begin(); assert != (*i)->get_assertions().end(); ++assert ) {
215 std::string typeName;
216 if ( checkAssignment( *assert, typeName ) ) {
217 assignOps[ typeName ] = *assert;
218 } // if
219 } // for
220 } // for
221 }
222
[82dd287]223 DeclarationWithType *Pass1::mutate( FunctionDecl *functionDecl ) {
[e56cfdb0]224 if ( functionDecl->get_statements() ) { // empty routine body ?
225 doBeginScope();
[01aeade]226 TyVarMap oldtyVars = scopeTyVars;
[ed1065c]227 std::map< std::string, DeclarationWithType *> oldassignOps = assignOps;
[01aeade]228 DeclarationWithType *oldRetval = retval;
229 bool oldUseRetval = useRetval;
[e56cfdb0]230
231 // process polymorphic return value
[01aeade]232 retval = 0;
233 std::string typeName;
234 if ( isPolyRet( functionDecl->get_functionType(), typeName ) && functionDecl->get_linkage() == LinkageSpec::Cforall ) {
235 retval = functionDecl->get_functionType()->get_returnVals().front();
[ae63a18]236
[01aeade]237 // give names to unnamed return values
238 if ( retval->get_name() == "" ) {
239 retval->set_name( "_retparm" );
240 retval->set_linkage( LinkageSpec::C );
241 } // if
242 } // if
[ae63a18]243
[e56cfdb0]244 FunctionType *functionType = functionDecl->get_functionType();
[01aeade]245 makeTyVarMap( functionDecl->get_functionType(), scopeTyVars );
246 findAssignOps( functionDecl->get_functionType()->get_forall() );
[e56cfdb0]247
248 std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
249 std::list< FunctionType *> functions;
250 for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
251 for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
252 findFunction( (*assert)->get_type(), functions, scopeTyVars, needsAdapter );
253 } // for
254 } // for
255 for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
256 findFunction( (*arg)->get_type(), functions, scopeTyVars, needsAdapter );
257 } // for
258 AdapterMap & adapters = Pass1::adapters.top();
259 for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
[bdf1954]260 std::string mangleName = mangleAdapterName( *funType, scopeTyVars );
[e56cfdb0]261 if ( adapters.find( mangleName ) == adapters.end() ) {
262 std::string adapterName = makeAdapterName( mangleName );
263 adapters.insert( std::pair< std::string, DeclarationWithType *>( mangleName, new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) ) );
264 } // if
265 } // for
266
[01aeade]267 functionDecl->set_statements( functionDecl->get_statements()->acceptMutator( *this ) );
[ae63a18]268
[01aeade]269 scopeTyVars = oldtyVars;
[ed1065c]270 assignOps = oldassignOps;
[e56cfdb0]271 // std::cerr << "end FunctionDecl: ";
272 // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
273 // std::cerr << i->first << " ";
274 // }
275 // std::cerr << "\n";
[01aeade]276 retval = oldRetval;
277 useRetval = oldUseRetval;
[e56cfdb0]278 doEndScope();
[01aeade]279 } // if
280 return functionDecl;
281 }
[6c3744e]282
[01aeade]283 TypeDecl *Pass1::mutate( TypeDecl *typeDecl ) {
284 scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
285 return Mutator::mutate( typeDecl );
286 }
[6c3744e]287
[01aeade]288 Expression *Pass1::mutate( CommaExpr *commaExpr ) {
289 bool oldUseRetval = useRetval;
290 useRetval = false;
291 commaExpr->set_arg1( maybeMutate( commaExpr->get_arg1(), *this ) );
292 useRetval = oldUseRetval;
293 commaExpr->set_arg2( maybeMutate( commaExpr->get_arg2(), *this ) );
294 return commaExpr;
295 }
[6c3744e]296
[01aeade]297 Expression *Pass1::mutate( ConditionalExpr *condExpr ) {
298 bool oldUseRetval = useRetval;
299 useRetval = false;
300 condExpr->set_arg1( maybeMutate( condExpr->get_arg1(), *this ) );
301 useRetval = oldUseRetval;
302 condExpr->set_arg2( maybeMutate( condExpr->get_arg2(), *this ) );
303 condExpr->set_arg3( maybeMutate( condExpr->get_arg3(), *this ) );
304 return condExpr;
[6c3744e]305
[01aeade]306 }
[6c3744e]307
[01aeade]308 void Pass1::passTypeVars( ApplicationExpr *appExpr, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) {
[7754cde]309 // pass size/align for type variables
[01aeade]310 for ( TyVarMap::const_iterator tyParm = exprTyVars.begin(); tyParm != exprTyVars.end(); ++tyParm ) {
311 ResolvExpr::EqvClass eqvClass;
312 assert( env );
313 if ( tyParm->second == TypeDecl::Any ) {
314 Type *concrete = env->lookup( tyParm->first );
315 if ( concrete ) {
316 arg = appExpr->get_args().insert( arg, new SizeofExpr( concrete->clone() ) );
317 arg++;
[db0b3ce]318 arg = appExpr->get_args().insert( arg, new AlignofExpr( concrete->clone() ) );
319 arg++;
[01aeade]320 } else {
321 throw SemanticError( "unbound type variable in application ", appExpr );
322 } // if
323 } // if
324 } // for
[7754cde]325
326 // add size/align for generic types to parameter list
327 //assert( ! appExpr->get_function()->get_results().empty() );
328 if ( appExpr->get_function()->get_results().empty() ) return;
329 FunctionType *funcType = getFunctionType( appExpr->get_function()->get_results().front() );
330 assert( funcType );
[ae63a18]331
[7754cde]332 std::list< DeclarationWithType* >::const_iterator fnParm = funcType->get_parameters().begin();
333 std::list< Expression* >::const_iterator fnArg = arg;
[69911c11]334 std::set< std::string > seenTypes; //< names for generic types we've seen
[7754cde]335 for ( ; fnParm != funcType->get_parameters().end() && fnArg != appExpr->get_args().end(); ++fnParm, ++fnArg ) {
336 Type *parmType = (*fnParm)->get_type();
337 if ( ! dynamic_cast< TypeInstType* >( parmType ) && isPolyType( parmType, exprTyVars ) ) {
338 std::string sizeName = sizeofName( parmType );
339 if ( seenTypes.count( sizeName ) ) continue;
340
341 assert( ! (*fnArg)->get_results().empty() );
342 Type *argType = (*fnArg)->get_results().front();
343 arg = appExpr->get_args().insert( arg, new SizeofExpr( argType->clone() ) );
344 arg++;
345 arg = appExpr->get_args().insert( arg, new AlignofExpr( argType->clone() ) );
346 arg++;
347
348 seenTypes.insert( sizeName );
349 }
350 }
[01aeade]351 }
[6c3744e]352
[01aeade]353 ObjectDecl *Pass1::makeTemporary( Type *type ) {
[68cd1ce]354 ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, type, 0 );
[01aeade]355 stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
356 return newObj;
357 }
[6c3744e]358
[01aeade]359 Expression *Pass1::addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ) {
[cf16f94]360 // ***** Code Removal ***** After introducing a temporary variable for all return expressions, the following code appears superfluous.
361 // if ( useRetval ) {
362 // assert( retval );
363 // arg = appExpr->get_args().insert( arg, new VariableExpr( retval ) );
364 // arg++;
365 // } else {
366
367 // Create temporary to hold return value of polymorphic function and produce that temporary as a result
368 // using a comma expression. Possibly change comma expression into statement expression "{}" for multiple
369 // return values.
370 ObjectDecl *newObj = makeTemporary( retType->clone() );
371 Expression *paramExpr = new VariableExpr( newObj );
372 // If the type of the temporary is not polymorphic, box temporary by taking its address; otherwise the
373 // temporary is already boxed and can be used directly.
[5f6c42c]374 if ( ! isPolyType( newObj->get_type(), scopeTyVars, env ) ) {
[cf16f94]375 paramExpr = new AddressExpr( paramExpr );
[01aeade]376 } // if
[cf16f94]377 arg = appExpr->get_args().insert( arg, paramExpr ); // add argument to function call
378 arg++;
379 // Build a comma expression to call the function and emulate a normal return.
380 CommaExpr *commaExpr = new CommaExpr( appExpr, new VariableExpr( newObj ) );
381 commaExpr->set_env( appExpr->get_env() );
382 appExpr->set_env( 0 );
383 return commaExpr;
384 // } // if
385 // return appExpr;
[01aeade]386 }
[6c3744e]387
[01aeade]388 Expression *Pass1::addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, std::string typeName, std::list< Expression *>::iterator &arg ) {
389 ResolvExpr::EqvClass eqvClass;
390 assert( env );
391 Type *concrete = env->lookup( typeName );
392 if ( concrete == 0 ) {
393 throw SemanticError( "Unbound type variable " + typeName + " in ", appExpr );
394 } // if
395 return addRetParam( appExpr, function, concrete, arg );
396 }
[6c3744e]397
[01aeade]398 Expression *Pass1::applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) {
399 Expression *ret = appExpr;
[ffad73a]400 if ( ! function->get_returnVals().empty() && isPolyType( function->get_returnVals().front()->get_type(), tyVars ) ) {
[01aeade]401 ret = addRetParam( appExpr, function, function->get_returnVals().front()->get_type(), arg );
402 } // if
[bdf1954]403 std::string mangleName = mangleAdapterName( function, tyVars );
[01aeade]404 std::string adapterName = makeAdapterName( mangleName );
[b1a6d6b]405
[01aeade]406 appExpr->get_args().push_front( appExpr->get_function() );
407 appExpr->set_function( new NameExpr( adapterName ) );
[ae63a18]408
[01aeade]409 return ret;
410 }
[6c3744e]411
[01aeade]412 void Pass1::boxParam( Type *param, Expression *&arg, const TyVarMap &exprTyVars ) {
413 assert( ! arg->get_results().empty() );
[ffad73a]414// if ( ! dynamic_cast< PointerType *>( arg->get_results().front() ) ) {
[01aeade]415 TypeInstType *typeInst = dynamic_cast< TypeInstType *>( param );
416 if ( typeInst && exprTyVars.find( typeInst->get_name() ) != exprTyVars.end() ) {
417 if ( dynamic_cast< TypeInstType *>( arg->get_results().front() ) ) {
418 // if the argument's type is a type parameter, we don't need to box again!
419 return;
420 } else if ( arg->get_results().front()->get_isLvalue() ) {
421 // VariableExpr and MemberExpr are lvalues
422 arg = new AddressExpr( arg );
423 } else {
[68cd1ce]424 ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, arg->get_results().front()->clone(), 0 );
[f6d7e0f]425 newObj->get_type()->get_qualifiers() = Type::Qualifiers(); // TODO: is this right???
[01aeade]426 stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
427 UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
428 assign->get_args().push_back( new VariableExpr( newObj ) );
429 assign->get_args().push_back( arg );
430 stmtsToAdd.push_back( new ExprStmt( noLabels, assign ) );
431 arg = new AddressExpr( new VariableExpr( newObj ) );
432 } // if
433 } // if
[ffad73a]434// }
[01aeade]435 }
[6c3744e]436
[01aeade]437 void addCast( Expression *&actual, Type *formal, const TyVarMap &tyVars ) {
438 Type *newType = formal->clone();
439 std::list< FunctionType *> functions;
440 // instead of functions needing adapters, this really ought to look for
441 // any function mentioning a polymorphic type
442 findAndReplaceFunction( newType, functions, tyVars, needsAdapter );
443 if ( ! functions.empty() ) {
444 actual = new CastExpr( actual, newType );
445 } else {
446 delete newType;
447 } // if
448 }
[6c3744e]449
[01aeade]450 void Pass1::boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) {
451 for ( std::list< DeclarationWithType *>::const_iterator param = function->get_parameters().begin(); param != function->get_parameters().end(); ++param, ++arg ) {
452 assert( arg != appExpr->get_args().end() );
453 addCast( *arg, (*param)->get_type(), exprTyVars );
454 boxParam( (*param)->get_type(), *arg, exprTyVars );
455 } // for
456 }
[6c3744e]457
[01aeade]458 void Pass1::addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) {
459 std::list< Expression *>::iterator cur = arg;
460 for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
461 for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
462 InferredParams::const_iterator inferParam = appExpr->get_inferParams().find( (*assert)->get_uniqueId() );
[698664b3]463 assert( inferParam != appExpr->get_inferParams().end() && "NOTE: Explicit casts of polymorphic functions to compatible monomorphic functions are currently unsupported" );
[01aeade]464 Expression *newExpr = inferParam->second.expr->clone();
465 addCast( newExpr, (*assert)->get_type(), tyVars );
466 boxParam( (*assert)->get_type(), newExpr, tyVars );
467 appExpr->get_args().insert( cur, newExpr );
468 } // for
469 } // for
470 }
[6c3744e]471
[01aeade]472 void makeRetParm( FunctionType *funcType ) {
473 DeclarationWithType *retParm = funcType->get_returnVals().front();
[6c3744e]474
[01aeade]475 // make a new parameter that is a pointer to the type of the old return value
476 retParm->set_type( new PointerType( Type::Qualifiers(), retParm->get_type() ) );
477 funcType->get_parameters().push_front( retParm );
[6c3744e]478
[01aeade]479 // we don't need the return value any more
480 funcType->get_returnVals().clear();
481 }
[6c3744e]482
[01aeade]483 FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars ) {
484 // actually make the adapter type
485 FunctionType *adapter = adaptee->clone();
[ffad73a]486 if ( ! adapter->get_returnVals().empty() && isPolyType( adapter->get_returnVals().front()->get_type(), tyVars ) ) {
[01aeade]487 makeRetParm( adapter );
488 } // if
[68cd1ce]489 adapter->get_parameters().push_front( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ) );
[01aeade]490 return adapter;
491 }
[6c3744e]492
[01aeade]493 Expression *makeAdapterArg( DeclarationWithType *param, DeclarationWithType *arg, DeclarationWithType *realParam, const TyVarMap &tyVars ) {
494 assert( param );
495 assert( arg );
[ffad73a]496 if ( isPolyType( realParam->get_type(), tyVars ) ) {
497// if ( dynamic_cast< PointerType *>( arg->get_type() ) ) {
498// return new CastExpr( new VariableExpr( param ), arg->get_type()->clone() );
499// } else {
[e56cfdb0]500 if ( dynamic_cast<TypeInstType *>(arg->get_type()) == NULL ) {
501 UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) );
502 deref->get_args().push_back( new CastExpr( new VariableExpr( param ), new PointerType( Type::Qualifiers(), arg->get_type()->clone() ) ) );
503 deref->get_results().push_back( arg->get_type()->clone() );
504 return deref;
505 } // if
[ffad73a]506// }
[01aeade]507 } // if
508 return new VariableExpr( param );
509 }
[6c3744e]510
[01aeade]511 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 ) {
512 UniqueName paramNamer( "_p" );
513 for ( ; param != paramEnd; ++param, ++arg, ++realParam ) {
514 if ( (*param)->get_name() == "" ) {
515 (*param)->set_name( paramNamer.newName() );
516 (*param)->set_linkage( LinkageSpec::C );
517 } // if
518 adapteeApp->get_args().push_back( makeAdapterArg( *param, *arg, *realParam, tyVars ) );
519 } // for
520 }
[6c3744e]521
[b1a6d6b]522
523
[01aeade]524 FunctionDecl *Pass1::makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ) {
525 FunctionType *adapterType = makeAdapterType( adaptee, tyVars );
526 adapterType = ScrubTyVars::scrub( adapterType, tyVars );
527 DeclarationWithType *adapteeDecl = adapterType->get_parameters().front();
528 adapteeDecl->set_name( "_adaptee" );
529 ApplicationExpr *adapteeApp = new ApplicationExpr( new CastExpr( new VariableExpr( adapteeDecl ), new PointerType( Type::Qualifiers(), realType ) ) );
530 Statement *bodyStmt;
[ae63a18]531
[01aeade]532 std::list< TypeDecl *>::iterator tyArg = realType->get_forall().begin();
533 std::list< TypeDecl *>::iterator tyParam = adapterType->get_forall().begin();
534 std::list< TypeDecl *>::iterator realTyParam = adaptee->get_forall().begin();
535 for ( ; tyParam != adapterType->get_forall().end(); ++tyArg, ++tyParam, ++realTyParam ) {
536 assert( tyArg != realType->get_forall().end() );
537 std::list< DeclarationWithType *>::iterator assertArg = (*tyArg)->get_assertions().begin();
538 std::list< DeclarationWithType *>::iterator assertParam = (*tyParam)->get_assertions().begin();
539 std::list< DeclarationWithType *>::iterator realAssertParam = (*realTyParam)->get_assertions().begin();
540 for ( ; assertParam != (*tyParam)->get_assertions().end(); ++assertArg, ++assertParam, ++realAssertParam ) {
541 assert( assertArg != (*tyArg)->get_assertions().end() );
542 adapteeApp->get_args().push_back( makeAdapterArg( *assertParam, *assertArg, *realAssertParam, tyVars ) );
543 } // for
544 } // for
[ae63a18]545
[01aeade]546 std::list< DeclarationWithType *>::iterator arg = realType->get_parameters().begin();
547 std::list< DeclarationWithType *>::iterator param = adapterType->get_parameters().begin();
548 std::list< DeclarationWithType *>::iterator realParam = adaptee->get_parameters().begin();
549 param++; // skip adaptee parameter
550 if ( realType->get_returnVals().empty() ) {
551 addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
552 bodyStmt = new ExprStmt( noLabels, adapteeApp );
[ffad73a]553 } else if ( isPolyType( adaptee->get_returnVals().front()->get_type(), tyVars ) ) {
[01aeade]554 if ( (*param)->get_name() == "" ) {
555 (*param)->set_name( "_ret" );
556 (*param)->set_linkage( LinkageSpec::C );
557 } // if
558 UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
559 UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) );
560 deref->get_args().push_back( new CastExpr( new VariableExpr( *param++ ), new PointerType( Type::Qualifiers(), realType->get_returnVals().front()->get_type()->clone() ) ) );
561 assign->get_args().push_back( deref );
562 addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
563 assign->get_args().push_back( adapteeApp );
564 bodyStmt = new ExprStmt( noLabels, assign );
565 } else {
566 // adapter for a function that returns a monomorphic value
567 addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
568 bodyStmt = new ReturnStmt( noLabels, adapteeApp );
569 } // if
570 CompoundStmt *adapterBody = new CompoundStmt( noLabels );
571 adapterBody->get_kids().push_back( bodyStmt );
572 std::string adapterName = makeAdapterName( mangleName );
[de62360d]573 return new FunctionDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, adapterType, adapterBody, false, false );
[01aeade]574 }
[6c3744e]575
[c29d9ce]576 void Pass1::passAdapters( ApplicationExpr * appExpr, FunctionType * functionType, const TyVarMap & exprTyVars ) {
[e497c1d]577 // collect a list of function types passed as parameters or implicit parameters (assertions)
[01aeade]578 std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
579 std::list< FunctionType *> functions;
580 for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
581 for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
582 findFunction( (*assert)->get_type(), functions, exprTyVars, needsAdapter );
583 } // for
584 } // for
585 for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
586 findFunction( (*arg)->get_type(), functions, exprTyVars, needsAdapter );
587 } // for
[e497c1d]588
[e56cfdb0]589 // parameter function types for which an appropriate adapter has been generated. we cannot use the types
590 // after applying substitutions, since two different parameter types may be unified to the same type
[01aeade]591 std::set< std::string > adaptersDone;
[e497c1d]592
[01aeade]593 for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
[c29d9ce]594 FunctionType *originalFunction = (*funType)->clone();
[01aeade]595 FunctionType *realFunction = (*funType)->clone();
596 std::string mangleName = SymTab::Mangler::mangle( realFunction );
[e497c1d]597
[e56cfdb0]598 // only attempt to create an adapter or pass one as a parameter if we haven't already done so for this
599 // pre-substitution parameter function type.
[01aeade]600 if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
[e497c1d]601 adaptersDone.insert( adaptersDone.begin(), mangleName );
[ae63a18]602
[e56cfdb0]603 // apply substitution to type variables to figure out what the adapter's type should look like
[e497c1d]604 assert( env );
605 env->apply( realFunction );
[ae63a18]606 mangleName = SymTab::Mangler::mangle( realFunction );
[bdf1954]607 mangleName += makePolyMonoSuffix( originalFunction, exprTyVars );
[e497c1d]608
[e56cfdb0]609 AdapterMap & adapters = Pass1::adapters.top();
610 AdapterMap::iterator adapter = adapters.find( mangleName );
611 if ( adapter == adapters.end() ) {
612 // adapter has not been created yet in the current scope, so define it
613 FunctionDecl *newAdapter = makeAdapter( *funType, realFunction, mangleName, exprTyVars );
614 adapter = adapters.insert( adapters.begin(), std::pair< std::string, DeclarationWithType *>( mangleName, newAdapter ) );
615 stmtsToAdd.push_back( new DeclStmt( noLabels, newAdapter ) );
[c29d9ce]616 } // if
[e56cfdb0]617 assert( adapter != adapters.end() );
618
619 // add the appropriate adapter as a parameter
620 appExpr->get_args().push_front( new VariableExpr( adapter->second ) );
[01aeade]621 } // if
622 } // for
[e56cfdb0]623 } // passAdapters
[6c3744e]624
[78dd0da]625 Expression *makeIncrDecrExpr( ApplicationExpr *appExpr, Type *polyType, bool isIncr ) {
[01aeade]626 NameExpr *opExpr;
627 if ( isIncr ) {
628 opExpr = new NameExpr( "?+=?" );
629 } else {
630 opExpr = new NameExpr( "?-=?" );
[6c3744e]631 } // if
[01aeade]632 UntypedExpr *addAssign = new UntypedExpr( opExpr );
633 if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) {
634 addAssign->get_args().push_back( address->get_arg() );
635 } else {
636 addAssign->get_args().push_back( appExpr->get_args().front() );
[6c3744e]637 } // if
[78dd0da]638 addAssign->get_args().push_back( new NameExpr( sizeofName( polyType ) ) );
[01aeade]639 addAssign->get_results().front() = appExpr->get_results().front()->clone();
640 if ( appExpr->get_env() ) {
641 addAssign->set_env( appExpr->get_env() );
[6c3744e]642 appExpr->set_env( 0 );
643 } // if
[01aeade]644 appExpr->get_args().clear();
645 delete appExpr;
646 return addAssign;
647 }
648
649 Expression *Pass1::handleIntrinsics( ApplicationExpr *appExpr ) {
650 if ( VariableExpr *varExpr = dynamic_cast< VariableExpr *>( appExpr->get_function() ) ) {
651 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic ) {
652 if ( varExpr->get_var()->get_name() == "?[?]" ) {
653 assert( ! appExpr->get_results().empty() );
654 assert( appExpr->get_args().size() == 2 );
[ffad73a]655 Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), scopeTyVars, env );
656 Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), scopeTyVars, env );
[ae63a18]657 assert( ! baseType1 || ! baseType2 ); // the arguments cannot both be polymorphic pointers
[01aeade]658 UntypedExpr *ret = 0;
[ae63a18]659 if ( baseType1 || baseType2 ) { // one of the arguments is a polymorphic pointer
[01aeade]660 ret = new UntypedExpr( new NameExpr( "?+?" ) );
661 } // if
[ffad73a]662 if ( baseType1 ) {
[01aeade]663 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
664 multiply->get_args().push_back( appExpr->get_args().back() );
[ffad73a]665 multiply->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) );
[01aeade]666 ret->get_args().push_back( appExpr->get_args().front() );
667 ret->get_args().push_back( multiply );
[ffad73a]668 } else if ( baseType2 ) {
[01aeade]669 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
670 multiply->get_args().push_back( appExpr->get_args().front() );
[ffad73a]671 multiply->get_args().push_back( new NameExpr( sizeofName( baseType2 ) ) );
[01aeade]672 ret->get_args().push_back( multiply );
673 ret->get_args().push_back( appExpr->get_args().back() );
674 } // if
[ffad73a]675 if ( baseType1 || baseType2 ) {
[01aeade]676 ret->get_results().push_front( appExpr->get_results().front()->clone() );
677 if ( appExpr->get_env() ) {
678 ret->set_env( appExpr->get_env() );
679 appExpr->set_env( 0 );
680 } // if
681 appExpr->get_args().clear();
682 delete appExpr;
683 return ret;
684 } // if
685 } else if ( varExpr->get_var()->get_name() == "*?" ) {
686 assert( ! appExpr->get_results().empty() );
687 assert( ! appExpr->get_args().empty() );
[ffad73a]688 if ( isPolyType( appExpr->get_results().front(), scopeTyVars, env ) ) {
[01aeade]689 Expression *ret = appExpr->get_args().front();
690 delete ret->get_results().front();
691 ret->get_results().front() = appExpr->get_results().front()->clone();
692 if ( appExpr->get_env() ) {
693 ret->set_env( appExpr->get_env() );
694 appExpr->set_env( 0 );
695 } // if
696 appExpr->get_args().clear();
697 delete appExpr;
698 return ret;
699 } // if
700 } else if ( varExpr->get_var()->get_name() == "?++" || varExpr->get_var()->get_name() == "?--" ) {
701 assert( ! appExpr->get_results().empty() );
702 assert( appExpr->get_args().size() == 1 );
[ffad73a]703 if ( Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ) ) {
[01aeade]704 Type *tempType = appExpr->get_results().front()->clone();
705 if ( env ) {
706 env->apply( tempType );
707 } // if
708 ObjectDecl *newObj = makeTemporary( tempType );
709 VariableExpr *tempExpr = new VariableExpr( newObj );
710 UntypedExpr *assignExpr = new UntypedExpr( new NameExpr( "?=?" ) );
711 assignExpr->get_args().push_back( tempExpr->clone() );
712 if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) {
713 assignExpr->get_args().push_back( address->get_arg()->clone() );
714 } else {
715 assignExpr->get_args().push_back( appExpr->get_args().front()->clone() );
716 } // if
[ffad73a]717 CommaExpr *firstComma = new CommaExpr( assignExpr, makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "?++" ) );
[01aeade]718 return new CommaExpr( firstComma, tempExpr );
719 } // if
720 } else if ( varExpr->get_var()->get_name() == "++?" || varExpr->get_var()->get_name() == "--?" ) {
721 assert( ! appExpr->get_results().empty() );
722 assert( appExpr->get_args().size() == 1 );
[ffad73a]723 if ( Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ) ) {
724 return makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "++?" );
[01aeade]725 } // if
726 } else if ( varExpr->get_var()->get_name() == "?+?" || varExpr->get_var()->get_name() == "?-?" ) {
727 assert( ! appExpr->get_results().empty() );
728 assert( appExpr->get_args().size() == 2 );
[ffad73a]729 Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), scopeTyVars, env );
730 Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), scopeTyVars, env );
731 if ( baseType1 && baseType2 ) {
[01aeade]732 UntypedExpr *divide = new UntypedExpr( new NameExpr( "?/?" ) );
733 divide->get_args().push_back( appExpr );
[ffad73a]734 divide->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) );
[01aeade]735 divide->get_results().push_front( appExpr->get_results().front()->clone() );
736 if ( appExpr->get_env() ) {
737 divide->set_env( appExpr->get_env() );
738 appExpr->set_env( 0 );
739 } // if
740 return divide;
[ffad73a]741 } else if ( baseType1 ) {
[01aeade]742 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
743 multiply->get_args().push_back( appExpr->get_args().back() );
[ffad73a]744 multiply->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) );
[01aeade]745 appExpr->get_args().back() = multiply;
[ffad73a]746 } else if ( baseType2 ) {
[01aeade]747 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
748 multiply->get_args().push_back( appExpr->get_args().front() );
[ffad73a]749 multiply->get_args().push_back( new NameExpr( sizeofName( baseType2 ) ) );
[01aeade]750 appExpr->get_args().front() = multiply;
751 } // if
752 } else if ( varExpr->get_var()->get_name() == "?+=?" || varExpr->get_var()->get_name() == "?-=?" ) {
753 assert( ! appExpr->get_results().empty() );
754 assert( appExpr->get_args().size() == 2 );
[ffad73a]755 Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env );
756 if ( baseType ) {
[01aeade]757 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
758 multiply->get_args().push_back( appExpr->get_args().back() );
[ffad73a]759 multiply->get_args().push_back( new NameExpr( sizeofName( baseType ) ) );
[01aeade]760 appExpr->get_args().back() = multiply;
761 } // if
762 } // if
763 return appExpr;
764 } // if
[6c3744e]765 } // if
[01aeade]766 return 0;
767 }
[6c3744e]768
[01aeade]769 Expression *Pass1::mutate( ApplicationExpr *appExpr ) {
[e56cfdb0]770 // std::cerr << "mutate appExpr: ";
771 // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
772 // std::cerr << i->first << " ";
773 // }
774 // std::cerr << "\n";
[01aeade]775 bool oldUseRetval = useRetval;
776 useRetval = false;
777 appExpr->get_function()->acceptMutator( *this );
778 mutateAll( appExpr->get_args(), *this );
779 useRetval = oldUseRetval;
[ae63a18]780
[01aeade]781 assert( ! appExpr->get_function()->get_results().empty() );
782 PointerType *pointer = dynamic_cast< PointerType *>( appExpr->get_function()->get_results().front() );
783 assert( pointer );
784 FunctionType *function = dynamic_cast< FunctionType *>( pointer->get_base() );
785 assert( function );
[ae63a18]786
[01aeade]787 if ( Expression *newExpr = handleIntrinsics( appExpr ) ) {
788 return newExpr;
789 } // if
[ae63a18]790
[01aeade]791 Expression *ret = appExpr;
[ae63a18]792
[01aeade]793 std::list< Expression *>::iterator arg = appExpr->get_args().begin();
794 std::list< Expression *>::iterator paramBegin = appExpr->get_args().begin();
[ae63a18]795
[01aeade]796 std::string typeName;
797 if ( isPolyRet( function, typeName ) ) {
798 ret = addPolyRetParam( appExpr, function, typeName, arg );
799 } else if ( needsAdapter( function, scopeTyVars ) ) {
[e56cfdb0]800 // std::cerr << "needs adapter: ";
801 // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
802 // std::cerr << i->first << " ";
803 // }
804 // std::cerr << "\n";
[01aeade]805 // change the application so it calls the adapter rather than the passed function
806 ret = applyAdapter( appExpr, function, arg, scopeTyVars );
807 } // if
808 arg = appExpr->get_args().begin();
[ae63a18]809
[01aeade]810 TyVarMap exprTyVars;
811 makeTyVarMap( function, exprTyVars );
[ae63a18]812
[01aeade]813 passTypeVars( appExpr, arg, exprTyVars );
814 addInferredParams( appExpr, function, arg, exprTyVars );
[51b73452]815
[01aeade]816 arg = paramBegin;
[ae63a18]817
[01aeade]818 boxParams( appExpr, function, arg, exprTyVars );
[6c3744e]819
[01aeade]820 passAdapters( appExpr, function, exprTyVars );
[6c3744e]821
[01aeade]822 return ret;
823 }
[6c3744e]824
[01aeade]825 Expression *Pass1::mutate( UntypedExpr *expr ) {
[ffad73a]826 if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), scopeTyVars, env ) ) {
[01aeade]827 if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) {
828 if ( name->get_name() == "*?" ) {
829 Expression *ret = expr->get_args().front();
830 expr->get_args().clear();
831 delete expr;
832 return ret->acceptMutator( *this );
833 } // if
834 } // if
835 } // if
836 return PolyMutator::mutate( expr );
837 }
[6c3744e]838
[01aeade]839 Expression *Pass1::mutate( AddressExpr *addrExpr ) {
840 assert( ! addrExpr->get_arg()->get_results().empty() );
[cf16f94]841
842 bool needs = false;
843 if ( UntypedExpr *expr = dynamic_cast< UntypedExpr *>( addrExpr->get_arg() ) ) {
[5f6c42c]844 if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), scopeTyVars, env ) ) {
[cf16f94]845 if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) {
846 if ( name->get_name() == "*?" ) {
847 if ( ApplicationExpr * appExpr = dynamic_cast< ApplicationExpr * >( expr->get_args().front() ) ) {
848 assert( ! appExpr->get_function()->get_results().empty() );
849 PointerType *pointer = dynamic_cast< PointerType *>( appExpr->get_function()->get_results().front() );
850 assert( pointer );
851 FunctionType *function = dynamic_cast< FunctionType *>( pointer->get_base() );
852 assert( function );
853 needs = needsAdapter( function, scopeTyVars );
854 } // if
855 } // if
856 } // if
857 } // if
858 } // if
[01aeade]859 addrExpr->set_arg( mutateExpression( addrExpr->get_arg() ) );
[5f6c42c]860 if ( isPolyType( addrExpr->get_arg()->get_results().front(), scopeTyVars, env ) || needs ) {
[01aeade]861 Expression *ret = addrExpr->get_arg();
862 delete ret->get_results().front();
863 ret->get_results().front() = addrExpr->get_results().front()->clone();
864 addrExpr->set_arg( 0 );
865 delete addrExpr;
866 return ret;
867 } else {
868 return addrExpr;
869 } // if
870 }
[6c3744e]871
[cf16f94]872 Statement * Pass1::mutate( ReturnStmt *returnStmt ) {
873 if ( retval && returnStmt->get_expr() ) {
874 assert( ! returnStmt->get_expr()->get_results().empty() );
875 // ***** Code Removal ***** After introducing a temporary variable for all return expressions, the following code appears superfluous.
876 // if ( returnStmt->get_expr()->get_results().front()->get_isLvalue() ) {
[ae63a18]877 // by this point, a cast expr on a polymorphic return value is redundant
[cf16f94]878 while ( CastExpr *castExpr = dynamic_cast< CastExpr *>( returnStmt->get_expr() ) ) {
879 returnStmt->set_expr( castExpr->get_arg() );
880 returnStmt->get_expr()->set_env( castExpr->get_env() );
881 castExpr->set_env( 0 );
882 castExpr->set_arg( 0 );
883 delete castExpr;
[5f6c42c]884 } //while
[cf16f94]885 TypeInstType *typeInst = dynamic_cast< TypeInstType *>( retval->get_type() );
886 assert( typeInst );
887 std::map< std::string, DeclarationWithType *>::const_iterator assignIter = assignOps.find( typeInst->get_name() );
888 if ( assignIter == assignOps.end() ) {
889 throw SemanticError( "Attempt to return dtype or ftype object in ", returnStmt->get_expr() );
[01aeade]890 } // if
[cf16f94]891 ApplicationExpr *assignExpr = new ApplicationExpr( new VariableExpr( assignIter->second ) );
892 Expression *retParm = new NameExpr( retval->get_name() );
893 retParm->get_results().push_back( new PointerType( Type::Qualifiers(), retval->get_type()->clone() ) );
894 assignExpr->get_args().push_back( retParm );
895 assignExpr->get_args().push_back( returnStmt->get_expr() );
896 stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( assignExpr ) ) );
897 // } else {
898 // useRetval = true;
899 // stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( returnStmt->get_expr() ) ) );
900 // useRetval = false;
901 // } // if
902 returnStmt->set_expr( 0 );
[01aeade]903 } else {
[cf16f94]904 returnStmt->set_expr( mutateExpression( returnStmt->get_expr() ) );
[01aeade]905 } // if
[cf16f94]906 return returnStmt;
[01aeade]907 }
[6c3744e]908
[01aeade]909 Type * Pass1::mutate( PointerType *pointerType ) {
910 TyVarMap oldtyVars = scopeTyVars;
911 makeTyVarMap( pointerType, scopeTyVars );
[ae63a18]912
[01aeade]913 Type *ret = Mutator::mutate( pointerType );
[ae63a18]914
[01aeade]915 scopeTyVars = oldtyVars;
916 return ret;
917 }
[6c3744e]918
[01aeade]919 Type * Pass1::mutate( FunctionType *functionType ) {
920 TyVarMap oldtyVars = scopeTyVars;
921 makeTyVarMap( functionType, scopeTyVars );
[ae63a18]922
[01aeade]923 Type *ret = Mutator::mutate( functionType );
[ae63a18]924
[01aeade]925 scopeTyVars = oldtyVars;
926 return ret;
927 }
[51b73452]928
[01aeade]929 void Pass1::doBeginScope() {
[bdf1954]930 // push a copy of the current map
[e56cfdb0]931 adapters.push(adapters.top());
[01aeade]932 }
[b1a6d6b]933
[01aeade]934 void Pass1::doEndScope() {
935 adapters.pop();
936 }
[51b73452]937
938////////////////////////////////////////// Pass2 ////////////////////////////////////////////////////
939
[01aeade]940 void Pass2::addAdapters( FunctionType *functionType ) {
941 std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
942 std::list< FunctionType *> functions;
943 for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
944 Type *orig = (*arg)->get_type();
945 findAndReplaceFunction( orig, functions, scopeTyVars, needsAdapter );
946 (*arg)->set_type( orig );
947 }
948 std::set< std::string > adaptersDone;
949 for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
[bdf1954]950 std::string mangleName = mangleAdapterName( *funType, scopeTyVars );
[01aeade]951 if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
952 std::string adapterName = makeAdapterName( mangleName );
[68cd1ce]953 paramList.push_front( new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) );
[01aeade]954 adaptersDone.insert( adaptersDone.begin(), mangleName );
955 }
956 }
[5f6c42c]957// deleteAll( functions );
[01aeade]958 }
[6c3744e]959
[01aeade]960 template< typename DeclClass >
961 DeclClass * Pass2::handleDecl( DeclClass *decl, Type *type ) {
962 DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) );
[6c3744e]963
[01aeade]964 return ret;
965 }
[6c3744e]966
[01aeade]967 DeclarationWithType * Pass2::mutate( FunctionDecl *functionDecl ) {
968 return handleDecl( functionDecl, functionDecl->get_functionType() );
969 }
[6c3744e]970
[01aeade]971 ObjectDecl * Pass2::mutate( ObjectDecl *objectDecl ) {
972 return handleDecl( objectDecl, objectDecl->get_type() );
973 }
[6c3744e]974
[01aeade]975 TypeDecl * Pass2::mutate( TypeDecl *typeDecl ) {
976 scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
977 if ( typeDecl->get_base() ) {
978 return handleDecl( typeDecl, typeDecl->get_base() );
979 } else {
980 return Mutator::mutate( typeDecl );
981 }
982 }
[6c3744e]983
[01aeade]984 TypedefDecl * Pass2::mutate( TypedefDecl *typedefDecl ) {
985 return handleDecl( typedefDecl, typedefDecl->get_base() );
986 }
[6c3744e]987
[01aeade]988 Type * Pass2::mutate( PointerType *pointerType ) {
989 TyVarMap oldtyVars = scopeTyVars;
990 makeTyVarMap( pointerType, scopeTyVars );
[ae63a18]991
[01aeade]992 Type *ret = Mutator::mutate( pointerType );
[ae63a18]993
[01aeade]994 scopeTyVars = oldtyVars;
995 return ret;
996 }
[6c3744e]997
[01aeade]998 Type *Pass2::mutate( FunctionType *funcType ) {
999 TyVarMap oldtyVars = scopeTyVars;
1000 makeTyVarMap( funcType, scopeTyVars );
[7754cde]1001
1002 // move polymorphic return type to parameter list
[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 }
[7754cde]1010
1011 // add size/align and assertions for type parameters to parameter list
[01aeade]1012 std::list< DeclarationWithType *>::iterator last = funcType->get_parameters().begin();
1013 std::list< DeclarationWithType *> inferredParams;
[78dd0da]1014 ObjectDecl newObj( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), 0 );
[f8b961b]1015// ObjectDecl *newFunPtr = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 );
[01aeade]1016 for ( std::list< TypeDecl *>::const_iterator tyParm = funcType->get_forall().begin(); tyParm != funcType->get_forall().end(); ++tyParm ) {
[db0b3ce]1017 ObjectDecl *sizeParm, *alignParm;
1018 // add all size and alignment parameters to parameter list
[01aeade]1019 if ( (*tyParm)->get_kind() == TypeDecl::Any ) {
[78dd0da]1020 TypeInstType parmType( Type::Qualifiers(), (*tyParm)->get_name(), *tyParm );
[ae63a18]1021
[78dd0da]1022 sizeParm = newObj.clone();
1023 sizeParm->set_name( sizeofName( &parmType ) );
[db0b3ce]1024 last = funcType->get_parameters().insert( last, sizeParm );
1025 ++last;
[78dd0da]1026
1027 alignParm = newObj.clone();
1028 alignParm->set_name( alignofName( &parmType ) );
[db0b3ce]1029 last = funcType->get_parameters().insert( last, alignParm );
[01aeade]1030 ++last;
1031 }
[e56cfdb0]1032 // move all assertions into parameter list
[01aeade]1033 for ( std::list< DeclarationWithType *>::iterator assert = (*tyParm)->get_assertions().begin(); assert != (*tyParm)->get_assertions().end(); ++assert ) {
[f8b961b]1034// *assert = (*assert)->acceptMutator( *this );
[01aeade]1035 inferredParams.push_back( *assert );
1036 }
1037 (*tyParm)->get_assertions().clear();
1038 }
[7754cde]1039
1040 // add size/align for generic types to parameter list
1041 std::set< std::string > seenTypes; //< sizeofName for generic types we've seen
1042 for ( std::list< DeclarationWithType* >::const_iterator fnParm = last; fnParm != funcType->get_parameters().end(); ++fnParm ) {
1043 Type *parmType = (*fnParm)->get_type();
1044 if ( ! dynamic_cast< TypeInstType* >( parmType ) && isPolyType( parmType, scopeTyVars ) ) {
1045 std::string sizeName = sizeofName( parmType );
1046 if ( seenTypes.count( sizeName ) ) continue;
[ae63a18]1047
[7754cde]1048 ObjectDecl *sizeParm, *alignParm;
1049 sizeParm = newObj.clone();
1050 sizeParm->set_name( sizeName );
1051 last = funcType->get_parameters().insert( last, sizeParm );
1052 ++last;
1053
1054 alignParm = newObj.clone();
1055 alignParm->set_name( alignofName( parmType ) );
1056 last = funcType->get_parameters().insert( last, alignParm );
1057 ++last;
1058
1059 seenTypes.insert( sizeName );
1060 }
1061 }
1062
1063 // splice assertion parameters into parameter list
[01aeade]1064 funcType->get_parameters().splice( last, inferredParams );
1065 addAdapters( funcType );
1066 mutateAll( funcType->get_returnVals(), *this );
1067 mutateAll( funcType->get_parameters(), *this );
[ae63a18]1068
[01aeade]1069 scopeTyVars = oldtyVars;
1070 return funcType;
1071 }
[51b73452]1072
1073////////////////////////////////////////// Pass3 ////////////////////////////////////////////////////
1074
[01aeade]1075 template< typename DeclClass >
1076 DeclClass * Pass3::handleDecl( DeclClass *decl, Type *type ) {
1077 TyVarMap oldtyVars = scopeTyVars;
1078 makeTyVarMap( type, scopeTyVars );
[ae63a18]1079
[01aeade]1080 DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) );
1081 ScrubTyVars::scrub( decl, scopeTyVars );
[6c3744e]1082
[01aeade]1083 scopeTyVars = oldtyVars;
1084 return ret;
1085 }
[6c3744e]1086
[01aeade]1087 ObjectDecl * Pass3::mutate( ObjectDecl *objectDecl ) {
1088 return handleDecl( objectDecl, objectDecl->get_type() );
1089 }
[6c3744e]1090
[01aeade]1091 DeclarationWithType * Pass3::mutate( FunctionDecl *functionDecl ) {
1092 return handleDecl( functionDecl, functionDecl->get_functionType() );
1093 }
[6c3744e]1094
[01aeade]1095 TypedefDecl * Pass3::mutate( TypedefDecl *typedefDecl ) {
1096 return handleDecl( typedefDecl, typedefDecl->get_base() );
1097 }
[6c3744e]1098
[01aeade]1099 TypeDecl * Pass3::mutate( TypeDecl *typeDecl ) {
[f8b961b]1100// Initializer *init = 0;
1101// std::list< Expression *> designators;
1102// scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
1103// if ( typeDecl->get_base() ) {
1104// init = new SimpleInit( new SizeofExpr( handleDecl( typeDecl, typeDecl->get_base() ) ), designators );
1105// }
1106// return new ObjectDecl( typeDecl->get_name(), Declaration::Extern, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::UnsignedInt ), init );
[51b73452]1107
[01aeade]1108 scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
1109 return Mutator::mutate( typeDecl );
1110 }
[51b73452]1111
[01aeade]1112 Type * Pass3::mutate( PointerType *pointerType ) {
1113 TyVarMap oldtyVars = scopeTyVars;
1114 makeTyVarMap( pointerType, scopeTyVars );
[ae63a18]1115
[01aeade]1116 Type *ret = Mutator::mutate( pointerType );
[ae63a18]1117
[01aeade]1118 scopeTyVars = oldtyVars;
1119 return ret;
1120 }
[6c3744e]1121
[01aeade]1122 Type * Pass3::mutate( FunctionType *functionType ) {
1123 TyVarMap oldtyVars = scopeTyVars;
1124 makeTyVarMap( functionType, scopeTyVars );
[ae63a18]1125
[01aeade]1126 Type *ret = Mutator::mutate( functionType );
[ae63a18]1127
[01aeade]1128 scopeTyVars = oldtyVars;
1129 return ret;
[6c3744e]1130 }
[51b73452]1131
[01aeade]1132 Statement *Pass3::mutate( DeclStmt *declStmt ) {
1133 if ( ObjectDecl *objectDecl = dynamic_cast< ObjectDecl *>( declStmt->get_decl() ) ) {
[ffad73a]1134 if ( isPolyType( objectDecl->get_type(), scopeTyVars ) ) {
[e01559c]1135 // change initialization of a polymorphic value object
1136 // to allocate storage with alloca
[ffad73a]1137 Type *declType = objectDecl->get_type();
[01aeade]1138 UntypedExpr *alloc = new UntypedExpr( new NameExpr( "__builtin_alloca" ) );
[ffad73a]1139 alloc->get_args().push_back( new NameExpr( sizeofName( declType ) ) );
[e01559c]1140
1141 delete objectDecl->get_init();
1142
1143 std::list<Expression*> designators;
1144 objectDecl->set_init( new SingleInit( alloc, designators ) );
[01aeade]1145 }
1146 }
1147 return Mutator::mutate( declStmt );
1148 }
1149 } // anonymous namespace
[51b73452]1150} // namespace GenPoly
[01aeade]1151
[51587aa]1152// Local Variables: //
1153// tab-width: 4 //
1154// mode: c++ //
1155// compile-command: "make install" //
1156// End: //
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