source: src/GenPoly/Box.cc@ 4d7e8f5

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 4d7e8f5 was aadc9a4, checked in by Aaron Moss <a3moss@…>, 10 years ago

Refactor isPolyRet to include generic return types
  • Property mode set to 100644
File size: 50.0 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;
[aadc9a4]233 if ( isPolyRet( functionDecl->get_functionType() ) && functionDecl->get_linkage() == LinkageSpec::Cforall ) {
[01aeade]234 retval = functionDecl->get_functionType()->get_returnVals().front();
[ae63a18]235
[01aeade]236 // give names to unnamed return values
237 if ( retval->get_name() == "" ) {
238 retval->set_name( "_retparm" );
239 retval->set_linkage( LinkageSpec::C );
240 } // if
241 } // if
[ae63a18]242
[e56cfdb0]243 FunctionType *functionType = functionDecl->get_functionType();
[01aeade]244 makeTyVarMap( functionDecl->get_functionType(), scopeTyVars );
245 findAssignOps( functionDecl->get_functionType()->get_forall() );
[e56cfdb0]246
247 std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
248 std::list< FunctionType *> functions;
249 for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
250 for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
251 findFunction( (*assert)->get_type(), functions, scopeTyVars, needsAdapter );
252 } // for
253 } // for
254 for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
255 findFunction( (*arg)->get_type(), functions, scopeTyVars, needsAdapter );
256 } // for
257 AdapterMap & adapters = Pass1::adapters.top();
258 for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
[bdf1954]259 std::string mangleName = mangleAdapterName( *funType, scopeTyVars );
[e56cfdb0]260 if ( adapters.find( mangleName ) == adapters.end() ) {
261 std::string adapterName = makeAdapterName( mangleName );
262 adapters.insert( std::pair< std::string, DeclarationWithType *>( mangleName, new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) ) );
263 } // if
264 } // for
265
[01aeade]266 functionDecl->set_statements( functionDecl->get_statements()->acceptMutator( *this ) );
[ae63a18]267
[01aeade]268 scopeTyVars = oldtyVars;
[ed1065c]269 assignOps = oldassignOps;
[e56cfdb0]270 // std::cerr << "end FunctionDecl: ";
271 // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
272 // std::cerr << i->first << " ";
273 // }
274 // std::cerr << "\n";
[01aeade]275 retval = oldRetval;
276 useRetval = oldUseRetval;
[e56cfdb0]277 doEndScope();
[01aeade]278 } // if
279 return functionDecl;
280 }
[6c3744e]281
[01aeade]282 TypeDecl *Pass1::mutate( TypeDecl *typeDecl ) {
283 scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
284 return Mutator::mutate( typeDecl );
285 }
[6c3744e]286
[01aeade]287 Expression *Pass1::mutate( CommaExpr *commaExpr ) {
288 bool oldUseRetval = useRetval;
289 useRetval = false;
290 commaExpr->set_arg1( maybeMutate( commaExpr->get_arg1(), *this ) );
291 useRetval = oldUseRetval;
292 commaExpr->set_arg2( maybeMutate( commaExpr->get_arg2(), *this ) );
293 return commaExpr;
294 }
[6c3744e]295
[01aeade]296 Expression *Pass1::mutate( ConditionalExpr *condExpr ) {
297 bool oldUseRetval = useRetval;
298 useRetval = false;
299 condExpr->set_arg1( maybeMutate( condExpr->get_arg1(), *this ) );
300 useRetval = oldUseRetval;
301 condExpr->set_arg2( maybeMutate( condExpr->get_arg2(), *this ) );
302 condExpr->set_arg3( maybeMutate( condExpr->get_arg3(), *this ) );
303 return condExpr;
[6c3744e]304
[01aeade]305 }
[6c3744e]306
[01aeade]307 void Pass1::passTypeVars( ApplicationExpr *appExpr, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) {
[7754cde]308 // pass size/align for type variables
[01aeade]309 for ( TyVarMap::const_iterator tyParm = exprTyVars.begin(); tyParm != exprTyVars.end(); ++tyParm ) {
310 ResolvExpr::EqvClass eqvClass;
311 assert( env );
312 if ( tyParm->second == TypeDecl::Any ) {
313 Type *concrete = env->lookup( tyParm->first );
314 if ( concrete ) {
315 arg = appExpr->get_args().insert( arg, new SizeofExpr( concrete->clone() ) );
316 arg++;
[db0b3ce]317 arg = appExpr->get_args().insert( arg, new AlignofExpr( concrete->clone() ) );
318 arg++;
[01aeade]319 } else {
320 throw SemanticError( "unbound type variable in application ", appExpr );
321 } // if
322 } // if
323 } // for
[7754cde]324
325 // add size/align for generic types to parameter list
326 //assert( ! appExpr->get_function()->get_results().empty() );
327 if ( appExpr->get_function()->get_results().empty() ) return;
328 FunctionType *funcType = getFunctionType( appExpr->get_function()->get_results().front() );
329 assert( funcType );
[ae63a18]330
[7754cde]331 std::list< DeclarationWithType* >::const_iterator fnParm = funcType->get_parameters().begin();
332 std::list< Expression* >::const_iterator fnArg = arg;
[69911c11]333 std::set< std::string > seenTypes; //< names for generic types we've seen
[7754cde]334 for ( ; fnParm != funcType->get_parameters().end() && fnArg != appExpr->get_args().end(); ++fnParm, ++fnArg ) {
335 Type *parmType = (*fnParm)->get_type();
336 if ( ! dynamic_cast< TypeInstType* >( parmType ) && isPolyType( parmType, exprTyVars ) ) {
337 std::string sizeName = sizeofName( parmType );
338 if ( seenTypes.count( sizeName ) ) continue;
339
340 assert( ! (*fnArg)->get_results().empty() );
341 Type *argType = (*fnArg)->get_results().front();
342 arg = appExpr->get_args().insert( arg, new SizeofExpr( argType->clone() ) );
343 arg++;
344 arg = appExpr->get_args().insert( arg, new AlignofExpr( argType->clone() ) );
345 arg++;
346
347 seenTypes.insert( sizeName );
348 }
349 }
[01aeade]350 }
[6c3744e]351
[01aeade]352 ObjectDecl *Pass1::makeTemporary( Type *type ) {
[68cd1ce]353 ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, type, 0 );
[01aeade]354 stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
355 return newObj;
356 }
[6c3744e]357
[01aeade]358 Expression *Pass1::addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ) {
[cf16f94]359 // ***** Code Removal ***** After introducing a temporary variable for all return expressions, the following code appears superfluous.
360 // if ( useRetval ) {
361 // assert( retval );
362 // arg = appExpr->get_args().insert( arg, new VariableExpr( retval ) );
363 // arg++;
364 // } else {
365
366 // Create temporary to hold return value of polymorphic function and produce that temporary as a result
367 // using a comma expression. Possibly change comma expression into statement expression "{}" for multiple
368 // return values.
369 ObjectDecl *newObj = makeTemporary( retType->clone() );
370 Expression *paramExpr = new VariableExpr( newObj );
371 // If the type of the temporary is not polymorphic, box temporary by taking its address; otherwise the
372 // temporary is already boxed and can be used directly.
[5f6c42c]373 if ( ! isPolyType( newObj->get_type(), scopeTyVars, env ) ) {
[cf16f94]374 paramExpr = new AddressExpr( paramExpr );
[01aeade]375 } // if
[cf16f94]376 arg = appExpr->get_args().insert( arg, paramExpr ); // add argument to function call
377 arg++;
378 // Build a comma expression to call the function and emulate a normal return.
379 CommaExpr *commaExpr = new CommaExpr( appExpr, new VariableExpr( newObj ) );
380 commaExpr->set_env( appExpr->get_env() );
381 appExpr->set_env( 0 );
382 return commaExpr;
383 // } // if
384 // return appExpr;
[01aeade]385 }
[6c3744e]386
[01aeade]387 Expression *Pass1::addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, std::string typeName, std::list< Expression *>::iterator &arg ) {
388 ResolvExpr::EqvClass eqvClass;
389 assert( env );
390 Type *concrete = env->lookup( typeName );
391 if ( concrete == 0 ) {
392 throw SemanticError( "Unbound type variable " + typeName + " in ", appExpr );
393 } // if
394 return addRetParam( appExpr, function, concrete, arg );
395 }
[6c3744e]396
[01aeade]397 Expression *Pass1::applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) {
398 Expression *ret = appExpr;
[ffad73a]399 if ( ! function->get_returnVals().empty() && isPolyType( function->get_returnVals().front()->get_type(), tyVars ) ) {
[01aeade]400 ret = addRetParam( appExpr, function, function->get_returnVals().front()->get_type(), arg );
401 } // if
[bdf1954]402 std::string mangleName = mangleAdapterName( function, tyVars );
[01aeade]403 std::string adapterName = makeAdapterName( mangleName );
[b1a6d6b]404
[01aeade]405 appExpr->get_args().push_front( appExpr->get_function() );
406 appExpr->set_function( new NameExpr( adapterName ) );
[ae63a18]407
[01aeade]408 return ret;
409 }
[6c3744e]410
[01aeade]411 void Pass1::boxParam( Type *param, Expression *&arg, const TyVarMap &exprTyVars ) {
412 assert( ! arg->get_results().empty() );
[1cced28]413 if ( isPolyType( param, exprTyVars ) ) {
[01aeade]414 if ( dynamic_cast< TypeInstType *>( arg->get_results().front() ) ) {
415 // if the argument's type is a type parameter, we don't need to box again!
416 return;
417 } else if ( arg->get_results().front()->get_isLvalue() ) {
418 // VariableExpr and MemberExpr are lvalues
419 arg = new AddressExpr( arg );
420 } else {
[68cd1ce]421 ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, arg->get_results().front()->clone(), 0 );
[f6d7e0f]422 newObj->get_type()->get_qualifiers() = Type::Qualifiers(); // TODO: is this right???
[01aeade]423 stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) );
424 UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
425 assign->get_args().push_back( new VariableExpr( newObj ) );
426 assign->get_args().push_back( arg );
427 stmtsToAdd.push_back( new ExprStmt( noLabels, assign ) );
428 arg = new AddressExpr( new VariableExpr( newObj ) );
429 } // if
430 } // if
431 }
[6c3744e]432
[01aeade]433 void addCast( Expression *&actual, Type *formal, const TyVarMap &tyVars ) {
434 Type *newType = formal->clone();
435 std::list< FunctionType *> functions;
436 // instead of functions needing adapters, this really ought to look for
437 // any function mentioning a polymorphic type
438 findAndReplaceFunction( newType, functions, tyVars, needsAdapter );
439 if ( ! functions.empty() ) {
440 actual = new CastExpr( actual, newType );
441 } else {
442 delete newType;
443 } // if
444 }
[6c3744e]445
[01aeade]446 void Pass1::boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) {
447 for ( std::list< DeclarationWithType *>::const_iterator param = function->get_parameters().begin(); param != function->get_parameters().end(); ++param, ++arg ) {
448 assert( arg != appExpr->get_args().end() );
449 addCast( *arg, (*param)->get_type(), exprTyVars );
450 boxParam( (*param)->get_type(), *arg, exprTyVars );
451 } // for
452 }
[6c3744e]453
[01aeade]454 void Pass1::addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) {
455 std::list< Expression *>::iterator cur = arg;
456 for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
457 for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
458 InferredParams::const_iterator inferParam = appExpr->get_inferParams().find( (*assert)->get_uniqueId() );
[698664b3]459 assert( inferParam != appExpr->get_inferParams().end() && "NOTE: Explicit casts of polymorphic functions to compatible monomorphic functions are currently unsupported" );
[01aeade]460 Expression *newExpr = inferParam->second.expr->clone();
461 addCast( newExpr, (*assert)->get_type(), tyVars );
462 boxParam( (*assert)->get_type(), newExpr, tyVars );
463 appExpr->get_args().insert( cur, newExpr );
464 } // for
465 } // for
466 }
[6c3744e]467
[01aeade]468 void makeRetParm( FunctionType *funcType ) {
469 DeclarationWithType *retParm = funcType->get_returnVals().front();
[6c3744e]470
[01aeade]471 // make a new parameter that is a pointer to the type of the old return value
472 retParm->set_type( new PointerType( Type::Qualifiers(), retParm->get_type() ) );
473 funcType->get_parameters().push_front( retParm );
[6c3744e]474
[01aeade]475 // we don't need the return value any more
476 funcType->get_returnVals().clear();
477 }
[6c3744e]478
[01aeade]479 FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars ) {
480 // actually make the adapter type
481 FunctionType *adapter = adaptee->clone();
[ffad73a]482 if ( ! adapter->get_returnVals().empty() && isPolyType( adapter->get_returnVals().front()->get_type(), tyVars ) ) {
[01aeade]483 makeRetParm( adapter );
484 } // if
[68cd1ce]485 adapter->get_parameters().push_front( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ) );
[01aeade]486 return adapter;
487 }
[6c3744e]488
[01aeade]489 Expression *makeAdapterArg( DeclarationWithType *param, DeclarationWithType *arg, DeclarationWithType *realParam, const TyVarMap &tyVars ) {
490 assert( param );
491 assert( arg );
[ffad73a]492 if ( isPolyType( realParam->get_type(), tyVars ) ) {
[e56cfdb0]493 if ( dynamic_cast<TypeInstType *>(arg->get_type()) == NULL ) {
494 UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) );
495 deref->get_args().push_back( new CastExpr( new VariableExpr( param ), new PointerType( Type::Qualifiers(), arg->get_type()->clone() ) ) );
496 deref->get_results().push_back( arg->get_type()->clone() );
497 return deref;
498 } // if
[01aeade]499 } // if
500 return new VariableExpr( param );
501 }
[6c3744e]502
[01aeade]503 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 ) {
504 UniqueName paramNamer( "_p" );
505 for ( ; param != paramEnd; ++param, ++arg, ++realParam ) {
506 if ( (*param)->get_name() == "" ) {
507 (*param)->set_name( paramNamer.newName() );
508 (*param)->set_linkage( LinkageSpec::C );
509 } // if
510 adapteeApp->get_args().push_back( makeAdapterArg( *param, *arg, *realParam, tyVars ) );
511 } // for
512 }
[6c3744e]513
[b1a6d6b]514
515
[01aeade]516 FunctionDecl *Pass1::makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ) {
517 FunctionType *adapterType = makeAdapterType( adaptee, tyVars );
518 adapterType = ScrubTyVars::scrub( adapterType, tyVars );
519 DeclarationWithType *adapteeDecl = adapterType->get_parameters().front();
520 adapteeDecl->set_name( "_adaptee" );
521 ApplicationExpr *adapteeApp = new ApplicationExpr( new CastExpr( new VariableExpr( adapteeDecl ), new PointerType( Type::Qualifiers(), realType ) ) );
522 Statement *bodyStmt;
[ae63a18]523
[01aeade]524 std::list< TypeDecl *>::iterator tyArg = realType->get_forall().begin();
525 std::list< TypeDecl *>::iterator tyParam = adapterType->get_forall().begin();
526 std::list< TypeDecl *>::iterator realTyParam = adaptee->get_forall().begin();
527 for ( ; tyParam != adapterType->get_forall().end(); ++tyArg, ++tyParam, ++realTyParam ) {
528 assert( tyArg != realType->get_forall().end() );
529 std::list< DeclarationWithType *>::iterator assertArg = (*tyArg)->get_assertions().begin();
530 std::list< DeclarationWithType *>::iterator assertParam = (*tyParam)->get_assertions().begin();
531 std::list< DeclarationWithType *>::iterator realAssertParam = (*realTyParam)->get_assertions().begin();
532 for ( ; assertParam != (*tyParam)->get_assertions().end(); ++assertArg, ++assertParam, ++realAssertParam ) {
533 assert( assertArg != (*tyArg)->get_assertions().end() );
534 adapteeApp->get_args().push_back( makeAdapterArg( *assertParam, *assertArg, *realAssertParam, tyVars ) );
535 } // for
536 } // for
[ae63a18]537
[01aeade]538 std::list< DeclarationWithType *>::iterator arg = realType->get_parameters().begin();
539 std::list< DeclarationWithType *>::iterator param = adapterType->get_parameters().begin();
540 std::list< DeclarationWithType *>::iterator realParam = adaptee->get_parameters().begin();
541 param++; // skip adaptee parameter
542 if ( realType->get_returnVals().empty() ) {
543 addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
544 bodyStmt = new ExprStmt( noLabels, adapteeApp );
[ffad73a]545 } else if ( isPolyType( adaptee->get_returnVals().front()->get_type(), tyVars ) ) {
[01aeade]546 if ( (*param)->get_name() == "" ) {
547 (*param)->set_name( "_ret" );
548 (*param)->set_linkage( LinkageSpec::C );
549 } // if
550 UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) );
551 UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) );
552 deref->get_args().push_back( new CastExpr( new VariableExpr( *param++ ), new PointerType( Type::Qualifiers(), realType->get_returnVals().front()->get_type()->clone() ) ) );
553 assign->get_args().push_back( deref );
554 addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
555 assign->get_args().push_back( adapteeApp );
556 bodyStmt = new ExprStmt( noLabels, assign );
557 } else {
558 // adapter for a function that returns a monomorphic value
559 addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars );
560 bodyStmt = new ReturnStmt( noLabels, adapteeApp );
561 } // if
562 CompoundStmt *adapterBody = new CompoundStmt( noLabels );
563 adapterBody->get_kids().push_back( bodyStmt );
564 std::string adapterName = makeAdapterName( mangleName );
[de62360d]565 return new FunctionDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, adapterType, adapterBody, false, false );
[01aeade]566 }
[6c3744e]567
[c29d9ce]568 void Pass1::passAdapters( ApplicationExpr * appExpr, FunctionType * functionType, const TyVarMap & exprTyVars ) {
[e497c1d]569 // collect a list of function types passed as parameters or implicit parameters (assertions)
[01aeade]570 std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
571 std::list< FunctionType *> functions;
572 for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) {
573 for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) {
574 findFunction( (*assert)->get_type(), functions, exprTyVars, needsAdapter );
575 } // for
576 } // for
577 for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
578 findFunction( (*arg)->get_type(), functions, exprTyVars, needsAdapter );
579 } // for
[e497c1d]580
[e56cfdb0]581 // parameter function types for which an appropriate adapter has been generated. we cannot use the types
582 // after applying substitutions, since two different parameter types may be unified to the same type
[01aeade]583 std::set< std::string > adaptersDone;
[e497c1d]584
[01aeade]585 for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
[c29d9ce]586 FunctionType *originalFunction = (*funType)->clone();
[01aeade]587 FunctionType *realFunction = (*funType)->clone();
588 std::string mangleName = SymTab::Mangler::mangle( realFunction );
[e497c1d]589
[e56cfdb0]590 // only attempt to create an adapter or pass one as a parameter if we haven't already done so for this
591 // pre-substitution parameter function type.
[01aeade]592 if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
[e497c1d]593 adaptersDone.insert( adaptersDone.begin(), mangleName );
[ae63a18]594
[e56cfdb0]595 // apply substitution to type variables to figure out what the adapter's type should look like
[e497c1d]596 assert( env );
597 env->apply( realFunction );
[ae63a18]598 mangleName = SymTab::Mangler::mangle( realFunction );
[bdf1954]599 mangleName += makePolyMonoSuffix( originalFunction, exprTyVars );
[e497c1d]600
[e56cfdb0]601 AdapterMap & adapters = Pass1::adapters.top();
602 AdapterMap::iterator adapter = adapters.find( mangleName );
603 if ( adapter == adapters.end() ) {
604 // adapter has not been created yet in the current scope, so define it
605 FunctionDecl *newAdapter = makeAdapter( *funType, realFunction, mangleName, exprTyVars );
606 adapter = adapters.insert( adapters.begin(), std::pair< std::string, DeclarationWithType *>( mangleName, newAdapter ) );
607 stmtsToAdd.push_back( new DeclStmt( noLabels, newAdapter ) );
[c29d9ce]608 } // if
[e56cfdb0]609 assert( adapter != adapters.end() );
610
611 // add the appropriate adapter as a parameter
612 appExpr->get_args().push_front( new VariableExpr( adapter->second ) );
[01aeade]613 } // if
614 } // for
[e56cfdb0]615 } // passAdapters
[6c3744e]616
[78dd0da]617 Expression *makeIncrDecrExpr( ApplicationExpr *appExpr, Type *polyType, bool isIncr ) {
[01aeade]618 NameExpr *opExpr;
619 if ( isIncr ) {
620 opExpr = new NameExpr( "?+=?" );
621 } else {
622 opExpr = new NameExpr( "?-=?" );
[6c3744e]623 } // if
[01aeade]624 UntypedExpr *addAssign = new UntypedExpr( opExpr );
625 if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) {
626 addAssign->get_args().push_back( address->get_arg() );
627 } else {
628 addAssign->get_args().push_back( appExpr->get_args().front() );
[6c3744e]629 } // if
[78dd0da]630 addAssign->get_args().push_back( new NameExpr( sizeofName( polyType ) ) );
[01aeade]631 addAssign->get_results().front() = appExpr->get_results().front()->clone();
632 if ( appExpr->get_env() ) {
633 addAssign->set_env( appExpr->get_env() );
[6c3744e]634 appExpr->set_env( 0 );
635 } // if
[01aeade]636 appExpr->get_args().clear();
637 delete appExpr;
638 return addAssign;
639 }
640
641 Expression *Pass1::handleIntrinsics( ApplicationExpr *appExpr ) {
642 if ( VariableExpr *varExpr = dynamic_cast< VariableExpr *>( appExpr->get_function() ) ) {
643 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic ) {
644 if ( varExpr->get_var()->get_name() == "?[?]" ) {
645 assert( ! appExpr->get_results().empty() );
646 assert( appExpr->get_args().size() == 2 );
[ffad73a]647 Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), scopeTyVars, env );
648 Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), scopeTyVars, env );
[ae63a18]649 assert( ! baseType1 || ! baseType2 ); // the arguments cannot both be polymorphic pointers
[01aeade]650 UntypedExpr *ret = 0;
[ae63a18]651 if ( baseType1 || baseType2 ) { // one of the arguments is a polymorphic pointer
[01aeade]652 ret = new UntypedExpr( new NameExpr( "?+?" ) );
653 } // if
[ffad73a]654 if ( baseType1 ) {
[01aeade]655 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
656 multiply->get_args().push_back( appExpr->get_args().back() );
[ffad73a]657 multiply->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) );
[01aeade]658 ret->get_args().push_back( appExpr->get_args().front() );
659 ret->get_args().push_back( multiply );
[ffad73a]660 } else if ( baseType2 ) {
[01aeade]661 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
662 multiply->get_args().push_back( appExpr->get_args().front() );
[ffad73a]663 multiply->get_args().push_back( new NameExpr( sizeofName( baseType2 ) ) );
[01aeade]664 ret->get_args().push_back( multiply );
665 ret->get_args().push_back( appExpr->get_args().back() );
666 } // if
[ffad73a]667 if ( baseType1 || baseType2 ) {
[01aeade]668 ret->get_results().push_front( appExpr->get_results().front()->clone() );
669 if ( appExpr->get_env() ) {
670 ret->set_env( appExpr->get_env() );
671 appExpr->set_env( 0 );
672 } // if
673 appExpr->get_args().clear();
674 delete appExpr;
675 return ret;
676 } // if
677 } else if ( varExpr->get_var()->get_name() == "*?" ) {
678 assert( ! appExpr->get_results().empty() );
679 assert( ! appExpr->get_args().empty() );
[ffad73a]680 if ( isPolyType( appExpr->get_results().front(), scopeTyVars, env ) ) {
[01aeade]681 Expression *ret = appExpr->get_args().front();
682 delete ret->get_results().front();
683 ret->get_results().front() = appExpr->get_results().front()->clone();
684 if ( appExpr->get_env() ) {
685 ret->set_env( appExpr->get_env() );
686 appExpr->set_env( 0 );
687 } // if
688 appExpr->get_args().clear();
689 delete appExpr;
690 return ret;
691 } // if
692 } else if ( varExpr->get_var()->get_name() == "?++" || varExpr->get_var()->get_name() == "?--" ) {
693 assert( ! appExpr->get_results().empty() );
694 assert( appExpr->get_args().size() == 1 );
[ffad73a]695 if ( Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ) ) {
[01aeade]696 Type *tempType = appExpr->get_results().front()->clone();
697 if ( env ) {
698 env->apply( tempType );
699 } // if
700 ObjectDecl *newObj = makeTemporary( tempType );
701 VariableExpr *tempExpr = new VariableExpr( newObj );
702 UntypedExpr *assignExpr = new UntypedExpr( new NameExpr( "?=?" ) );
703 assignExpr->get_args().push_back( tempExpr->clone() );
704 if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) {
705 assignExpr->get_args().push_back( address->get_arg()->clone() );
706 } else {
707 assignExpr->get_args().push_back( appExpr->get_args().front()->clone() );
708 } // if
[ffad73a]709 CommaExpr *firstComma = new CommaExpr( assignExpr, makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "?++" ) );
[01aeade]710 return new CommaExpr( firstComma, tempExpr );
711 } // if
712 } else if ( varExpr->get_var()->get_name() == "++?" || varExpr->get_var()->get_name() == "--?" ) {
713 assert( ! appExpr->get_results().empty() );
714 assert( appExpr->get_args().size() == 1 );
[ffad73a]715 if ( Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ) ) {
716 return makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "++?" );
[01aeade]717 } // if
718 } else if ( varExpr->get_var()->get_name() == "?+?" || varExpr->get_var()->get_name() == "?-?" ) {
719 assert( ! appExpr->get_results().empty() );
720 assert( appExpr->get_args().size() == 2 );
[ffad73a]721 Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), scopeTyVars, env );
722 Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), scopeTyVars, env );
723 if ( baseType1 && baseType2 ) {
[01aeade]724 UntypedExpr *divide = new UntypedExpr( new NameExpr( "?/?" ) );
725 divide->get_args().push_back( appExpr );
[ffad73a]726 divide->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) );
[01aeade]727 divide->get_results().push_front( appExpr->get_results().front()->clone() );
728 if ( appExpr->get_env() ) {
729 divide->set_env( appExpr->get_env() );
730 appExpr->set_env( 0 );
731 } // if
732 return divide;
[ffad73a]733 } else if ( baseType1 ) {
[01aeade]734 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
735 multiply->get_args().push_back( appExpr->get_args().back() );
[ffad73a]736 multiply->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) );
[01aeade]737 appExpr->get_args().back() = multiply;
[ffad73a]738 } else if ( baseType2 ) {
[01aeade]739 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
740 multiply->get_args().push_back( appExpr->get_args().front() );
[ffad73a]741 multiply->get_args().push_back( new NameExpr( sizeofName( baseType2 ) ) );
[01aeade]742 appExpr->get_args().front() = multiply;
743 } // if
744 } else if ( varExpr->get_var()->get_name() == "?+=?" || varExpr->get_var()->get_name() == "?-=?" ) {
745 assert( ! appExpr->get_results().empty() );
746 assert( appExpr->get_args().size() == 2 );
[ffad73a]747 Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env );
748 if ( baseType ) {
[01aeade]749 UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) );
750 multiply->get_args().push_back( appExpr->get_args().back() );
[ffad73a]751 multiply->get_args().push_back( new NameExpr( sizeofName( baseType ) ) );
[01aeade]752 appExpr->get_args().back() = multiply;
753 } // if
754 } // if
755 return appExpr;
756 } // if
[6c3744e]757 } // if
[01aeade]758 return 0;
759 }
[6c3744e]760
[01aeade]761 Expression *Pass1::mutate( ApplicationExpr *appExpr ) {
[e56cfdb0]762 // std::cerr << "mutate appExpr: ";
763 // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
764 // std::cerr << i->first << " ";
765 // }
766 // std::cerr << "\n";
[01aeade]767 bool oldUseRetval = useRetval;
768 useRetval = false;
769 appExpr->get_function()->acceptMutator( *this );
770 mutateAll( appExpr->get_args(), *this );
771 useRetval = oldUseRetval;
[ae63a18]772
[01aeade]773 assert( ! appExpr->get_function()->get_results().empty() );
774 PointerType *pointer = dynamic_cast< PointerType *>( appExpr->get_function()->get_results().front() );
775 assert( pointer );
776 FunctionType *function = dynamic_cast< FunctionType *>( pointer->get_base() );
777 assert( function );
[ae63a18]778
[01aeade]779 if ( Expression *newExpr = handleIntrinsics( appExpr ) ) {
780 return newExpr;
781 } // if
[ae63a18]782
[01aeade]783 Expression *ret = appExpr;
[ae63a18]784
[01aeade]785 std::list< Expression *>::iterator arg = appExpr->get_args().begin();
786 std::list< Expression *>::iterator paramBegin = appExpr->get_args().begin();
[ae63a18]787
[aadc9a4]788 if ( ReferenceToType *polyType = isPolyRet( function ) ) {
789 ret = addPolyRetParam( appExpr, function, polyType->get_name(), arg );
[01aeade]790 } else if ( needsAdapter( function, scopeTyVars ) ) {
[e56cfdb0]791 // std::cerr << "needs adapter: ";
792 // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) {
793 // std::cerr << i->first << " ";
794 // }
795 // std::cerr << "\n";
[01aeade]796 // change the application so it calls the adapter rather than the passed function
797 ret = applyAdapter( appExpr, function, arg, scopeTyVars );
798 } // if
799 arg = appExpr->get_args().begin();
[ae63a18]800
[01aeade]801 TyVarMap exprTyVars;
802 makeTyVarMap( function, exprTyVars );
[ae63a18]803
[01aeade]804 passTypeVars( appExpr, arg, exprTyVars );
805 addInferredParams( appExpr, function, arg, exprTyVars );
[51b73452]806
[01aeade]807 arg = paramBegin;
[ae63a18]808
[01aeade]809 boxParams( appExpr, function, arg, exprTyVars );
[6c3744e]810
[01aeade]811 passAdapters( appExpr, function, exprTyVars );
[6c3744e]812
[01aeade]813 return ret;
814 }
[6c3744e]815
[01aeade]816 Expression *Pass1::mutate( UntypedExpr *expr ) {
[ffad73a]817 if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), scopeTyVars, env ) ) {
[01aeade]818 if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) {
819 if ( name->get_name() == "*?" ) {
820 Expression *ret = expr->get_args().front();
821 expr->get_args().clear();
822 delete expr;
823 return ret->acceptMutator( *this );
824 } // if
825 } // if
826 } // if
827 return PolyMutator::mutate( expr );
828 }
[6c3744e]829
[01aeade]830 Expression *Pass1::mutate( AddressExpr *addrExpr ) {
831 assert( ! addrExpr->get_arg()->get_results().empty() );
[cf16f94]832
833 bool needs = false;
834 if ( UntypedExpr *expr = dynamic_cast< UntypedExpr *>( addrExpr->get_arg() ) ) {
[5f6c42c]835 if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), scopeTyVars, env ) ) {
[cf16f94]836 if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) {
837 if ( name->get_name() == "*?" ) {
838 if ( ApplicationExpr * appExpr = dynamic_cast< ApplicationExpr * >( expr->get_args().front() ) ) {
839 assert( ! appExpr->get_function()->get_results().empty() );
840 PointerType *pointer = dynamic_cast< PointerType *>( appExpr->get_function()->get_results().front() );
841 assert( pointer );
842 FunctionType *function = dynamic_cast< FunctionType *>( pointer->get_base() );
843 assert( function );
844 needs = needsAdapter( function, scopeTyVars );
845 } // if
846 } // if
847 } // if
848 } // if
849 } // if
[01aeade]850 addrExpr->set_arg( mutateExpression( addrExpr->get_arg() ) );
[5f6c42c]851 if ( isPolyType( addrExpr->get_arg()->get_results().front(), scopeTyVars, env ) || needs ) {
[01aeade]852 Expression *ret = addrExpr->get_arg();
853 delete ret->get_results().front();
854 ret->get_results().front() = addrExpr->get_results().front()->clone();
855 addrExpr->set_arg( 0 );
856 delete addrExpr;
857 return ret;
858 } else {
859 return addrExpr;
860 } // if
861 }
[6c3744e]862
[cf16f94]863 Statement * Pass1::mutate( ReturnStmt *returnStmt ) {
864 if ( retval && returnStmt->get_expr() ) {
865 assert( ! returnStmt->get_expr()->get_results().empty() );
866 // ***** Code Removal ***** After introducing a temporary variable for all return expressions, the following code appears superfluous.
867 // if ( returnStmt->get_expr()->get_results().front()->get_isLvalue() ) {
[ae63a18]868 // by this point, a cast expr on a polymorphic return value is redundant
[cf16f94]869 while ( CastExpr *castExpr = dynamic_cast< CastExpr *>( returnStmt->get_expr() ) ) {
870 returnStmt->set_expr( castExpr->get_arg() );
871 returnStmt->get_expr()->set_env( castExpr->get_env() );
872 castExpr->set_env( 0 );
873 castExpr->set_arg( 0 );
874 delete castExpr;
[5f6c42c]875 } //while
[cf16f94]876 TypeInstType *typeInst = dynamic_cast< TypeInstType *>( retval->get_type() );
877 assert( typeInst );
878 std::map< std::string, DeclarationWithType *>::const_iterator assignIter = assignOps.find( typeInst->get_name() );
879 if ( assignIter == assignOps.end() ) {
880 throw SemanticError( "Attempt to return dtype or ftype object in ", returnStmt->get_expr() );
[01aeade]881 } // if
[cf16f94]882 ApplicationExpr *assignExpr = new ApplicationExpr( new VariableExpr( assignIter->second ) );
883 Expression *retParm = new NameExpr( retval->get_name() );
884 retParm->get_results().push_back( new PointerType( Type::Qualifiers(), retval->get_type()->clone() ) );
885 assignExpr->get_args().push_back( retParm );
886 assignExpr->get_args().push_back( returnStmt->get_expr() );
887 stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( assignExpr ) ) );
888 // } else {
889 // useRetval = true;
890 // stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( returnStmt->get_expr() ) ) );
891 // useRetval = false;
892 // } // if
893 returnStmt->set_expr( 0 );
[01aeade]894 } else {
[cf16f94]895 returnStmt->set_expr( mutateExpression( returnStmt->get_expr() ) );
[01aeade]896 } // if
[cf16f94]897 return returnStmt;
[01aeade]898 }
[6c3744e]899
[01aeade]900 Type * Pass1::mutate( PointerType *pointerType ) {
901 TyVarMap oldtyVars = scopeTyVars;
902 makeTyVarMap( pointerType, scopeTyVars );
[ae63a18]903
[01aeade]904 Type *ret = Mutator::mutate( pointerType );
[ae63a18]905
[01aeade]906 scopeTyVars = oldtyVars;
907 return ret;
908 }
[6c3744e]909
[01aeade]910 Type * Pass1::mutate( FunctionType *functionType ) {
911 TyVarMap oldtyVars = scopeTyVars;
912 makeTyVarMap( functionType, scopeTyVars );
[ae63a18]913
[01aeade]914 Type *ret = Mutator::mutate( functionType );
[ae63a18]915
[01aeade]916 scopeTyVars = oldtyVars;
917 return ret;
918 }
[51b73452]919
[01aeade]920 void Pass1::doBeginScope() {
[bdf1954]921 // push a copy of the current map
[e56cfdb0]922 adapters.push(adapters.top());
[01aeade]923 }
[b1a6d6b]924
[01aeade]925 void Pass1::doEndScope() {
926 adapters.pop();
927 }
[51b73452]928
929////////////////////////////////////////// Pass2 ////////////////////////////////////////////////////
930
[01aeade]931 void Pass2::addAdapters( FunctionType *functionType ) {
932 std::list< DeclarationWithType *> &paramList = functionType->get_parameters();
933 std::list< FunctionType *> functions;
934 for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) {
935 Type *orig = (*arg)->get_type();
936 findAndReplaceFunction( orig, functions, scopeTyVars, needsAdapter );
937 (*arg)->set_type( orig );
938 }
939 std::set< std::string > adaptersDone;
940 for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) {
[bdf1954]941 std::string mangleName = mangleAdapterName( *funType, scopeTyVars );
[01aeade]942 if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) {
943 std::string adapterName = makeAdapterName( mangleName );
[68cd1ce]944 paramList.push_front( new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) );
[01aeade]945 adaptersDone.insert( adaptersDone.begin(), mangleName );
946 }
947 }
[5f6c42c]948// deleteAll( functions );
[01aeade]949 }
[6c3744e]950
[01aeade]951 template< typename DeclClass >
952 DeclClass * Pass2::handleDecl( DeclClass *decl, Type *type ) {
953 DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) );
[6c3744e]954
[01aeade]955 return ret;
956 }
[6c3744e]957
[01aeade]958 DeclarationWithType * Pass2::mutate( FunctionDecl *functionDecl ) {
959 return handleDecl( functionDecl, functionDecl->get_functionType() );
960 }
[6c3744e]961
[01aeade]962 ObjectDecl * Pass2::mutate( ObjectDecl *objectDecl ) {
963 return handleDecl( objectDecl, objectDecl->get_type() );
964 }
[6c3744e]965
[01aeade]966 TypeDecl * Pass2::mutate( TypeDecl *typeDecl ) {
967 scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
968 if ( typeDecl->get_base() ) {
969 return handleDecl( typeDecl, typeDecl->get_base() );
970 } else {
971 return Mutator::mutate( typeDecl );
972 }
973 }
[6c3744e]974
[01aeade]975 TypedefDecl * Pass2::mutate( TypedefDecl *typedefDecl ) {
976 return handleDecl( typedefDecl, typedefDecl->get_base() );
977 }
[6c3744e]978
[01aeade]979 Type * Pass2::mutate( PointerType *pointerType ) {
980 TyVarMap oldtyVars = scopeTyVars;
981 makeTyVarMap( pointerType, scopeTyVars );
[ae63a18]982
[01aeade]983 Type *ret = Mutator::mutate( pointerType );
[ae63a18]984
[01aeade]985 scopeTyVars = oldtyVars;
986 return ret;
987 }
[6c3744e]988
[01aeade]989 Type *Pass2::mutate( FunctionType *funcType ) {
990 TyVarMap oldtyVars = scopeTyVars;
991 makeTyVarMap( funcType, scopeTyVars );
[7754cde]992
993 // move polymorphic return type to parameter list
[aadc9a4]994 if ( isPolyRet( funcType ) ) {
[01aeade]995 DeclarationWithType *ret = funcType->get_returnVals().front();
996 ret->set_type( new PointerType( Type::Qualifiers(), ret->get_type() ) );
997 funcType->get_parameters().push_front( ret );
998 funcType->get_returnVals().pop_front();
999 }
[7754cde]1000
1001 // add size/align and assertions for type parameters to parameter list
[01aeade]1002 std::list< DeclarationWithType *>::iterator last = funcType->get_parameters().begin();
1003 std::list< DeclarationWithType *> inferredParams;
[78dd0da]1004 ObjectDecl newObj( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), 0 );
[f8b961b]1005// ObjectDecl *newFunPtr = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 );
[01aeade]1006 for ( std::list< TypeDecl *>::const_iterator tyParm = funcType->get_forall().begin(); tyParm != funcType->get_forall().end(); ++tyParm ) {
[db0b3ce]1007 ObjectDecl *sizeParm, *alignParm;
1008 // add all size and alignment parameters to parameter list
[01aeade]1009 if ( (*tyParm)->get_kind() == TypeDecl::Any ) {
[78dd0da]1010 TypeInstType parmType( Type::Qualifiers(), (*tyParm)->get_name(), *tyParm );
[ae63a18]1011
[78dd0da]1012 sizeParm = newObj.clone();
1013 sizeParm->set_name( sizeofName( &parmType ) );
[db0b3ce]1014 last = funcType->get_parameters().insert( last, sizeParm );
1015 ++last;
[78dd0da]1016
1017 alignParm = newObj.clone();
1018 alignParm->set_name( alignofName( &parmType ) );
[db0b3ce]1019 last = funcType->get_parameters().insert( last, alignParm );
[01aeade]1020 ++last;
1021 }
[e56cfdb0]1022 // move all assertions into parameter list
[01aeade]1023 for ( std::list< DeclarationWithType *>::iterator assert = (*tyParm)->get_assertions().begin(); assert != (*tyParm)->get_assertions().end(); ++assert ) {
[f8b961b]1024// *assert = (*assert)->acceptMutator( *this );
[01aeade]1025 inferredParams.push_back( *assert );
1026 }
1027 (*tyParm)->get_assertions().clear();
1028 }
[7754cde]1029
1030 // add size/align for generic types to parameter list
[b18b0b5]1031 std::set< std::string > seenTypes; // sizeofName for generic types we've seen
[7754cde]1032 for ( std::list< DeclarationWithType* >::const_iterator fnParm = last; fnParm != funcType->get_parameters().end(); ++fnParm ) {
1033 Type *parmType = (*fnParm)->get_type();
1034 if ( ! dynamic_cast< TypeInstType* >( parmType ) && isPolyType( parmType, scopeTyVars ) ) {
1035 std::string sizeName = sizeofName( parmType );
1036 if ( seenTypes.count( sizeName ) ) continue;
[ae63a18]1037
[7754cde]1038 ObjectDecl *sizeParm, *alignParm;
1039 sizeParm = newObj.clone();
1040 sizeParm->set_name( sizeName );
1041 last = funcType->get_parameters().insert( last, sizeParm );
1042 ++last;
1043
1044 alignParm = newObj.clone();
1045 alignParm->set_name( alignofName( parmType ) );
1046 last = funcType->get_parameters().insert( last, alignParm );
1047 ++last;
1048
1049 seenTypes.insert( sizeName );
1050 }
1051 }
1052
1053 // splice assertion parameters into parameter list
[01aeade]1054 funcType->get_parameters().splice( last, inferredParams );
1055 addAdapters( funcType );
1056 mutateAll( funcType->get_returnVals(), *this );
1057 mutateAll( funcType->get_parameters(), *this );
[ae63a18]1058
[01aeade]1059 scopeTyVars = oldtyVars;
1060 return funcType;
1061 }
[51b73452]1062
1063////////////////////////////////////////// Pass3 ////////////////////////////////////////////////////
1064
[01aeade]1065 template< typename DeclClass >
1066 DeclClass * Pass3::handleDecl( DeclClass *decl, Type *type ) {
1067 TyVarMap oldtyVars = scopeTyVars;
1068 makeTyVarMap( type, scopeTyVars );
[ae63a18]1069
[01aeade]1070 DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) );
1071 ScrubTyVars::scrub( decl, scopeTyVars );
[6c3744e]1072
[01aeade]1073 scopeTyVars = oldtyVars;
1074 return ret;
1075 }
[6c3744e]1076
[01aeade]1077 ObjectDecl * Pass3::mutate( ObjectDecl *objectDecl ) {
1078 return handleDecl( objectDecl, objectDecl->get_type() );
1079 }
[6c3744e]1080
[01aeade]1081 DeclarationWithType * Pass3::mutate( FunctionDecl *functionDecl ) {
1082 return handleDecl( functionDecl, functionDecl->get_functionType() );
1083 }
[6c3744e]1084
[01aeade]1085 TypedefDecl * Pass3::mutate( TypedefDecl *typedefDecl ) {
1086 return handleDecl( typedefDecl, typedefDecl->get_base() );
1087 }
[6c3744e]1088
[01aeade]1089 TypeDecl * Pass3::mutate( TypeDecl *typeDecl ) {
[f8b961b]1090// Initializer *init = 0;
1091// std::list< Expression *> designators;
1092// scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
1093// if ( typeDecl->get_base() ) {
1094// init = new SimpleInit( new SizeofExpr( handleDecl( typeDecl, typeDecl->get_base() ) ), designators );
1095// }
1096// return new ObjectDecl( typeDecl->get_name(), Declaration::Extern, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::UnsignedInt ), init );
[51b73452]1097
[01aeade]1098 scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind();
1099 return Mutator::mutate( typeDecl );
1100 }
[51b73452]1101
[01aeade]1102 Type * Pass3::mutate( PointerType *pointerType ) {
1103 TyVarMap oldtyVars = scopeTyVars;
1104 makeTyVarMap( pointerType, scopeTyVars );
[ae63a18]1105
[01aeade]1106 Type *ret = Mutator::mutate( pointerType );
[ae63a18]1107
[01aeade]1108 scopeTyVars = oldtyVars;
1109 return ret;
1110 }
[6c3744e]1111
[01aeade]1112 Type * Pass3::mutate( FunctionType *functionType ) {
1113 TyVarMap oldtyVars = scopeTyVars;
1114 makeTyVarMap( functionType, scopeTyVars );
[ae63a18]1115
[01aeade]1116 Type *ret = Mutator::mutate( functionType );
[ae63a18]1117
[01aeade]1118 scopeTyVars = oldtyVars;
1119 return ret;
[6c3744e]1120 }
[51b73452]1121
[01aeade]1122 Statement *Pass3::mutate( DeclStmt *declStmt ) {
1123 if ( ObjectDecl *objectDecl = dynamic_cast< ObjectDecl *>( declStmt->get_decl() ) ) {
[ffad73a]1124 if ( isPolyType( objectDecl->get_type(), scopeTyVars ) ) {
[e01559c]1125 // change initialization of a polymorphic value object
1126 // to allocate storage with alloca
[ffad73a]1127 Type *declType = objectDecl->get_type();
[01aeade]1128 UntypedExpr *alloc = new UntypedExpr( new NameExpr( "__builtin_alloca" ) );
[ffad73a]1129 alloc->get_args().push_back( new NameExpr( sizeofName( declType ) ) );
[e01559c]1130
1131 delete objectDecl->get_init();
1132
1133 std::list<Expression*> designators;
1134 objectDecl->set_init( new SingleInit( alloc, designators ) );
[01aeade]1135 }
1136 }
1137 return Mutator::mutate( declStmt );
1138 }
1139 } // anonymous namespace
[51b73452]1140} // namespace GenPoly
[01aeade]1141
[51587aa]1142// Local Variables: //
1143// tab-width: 4 //
1144// mode: c++ //
1145// compile-command: "make install" //
1146// End: //
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