[51587aa] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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[ae63a18] | 7 | // Box.cc -- |
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[51587aa] | 8 | // |
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| 9 | // Author : Richard C. Bilson |
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| 10 | // Created On : Mon May 18 07:44:20 2015 |
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[ca35c51] | 11 | // Last Modified By : Peter A. Buhr |
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| 12 | // Last Modified On : Wed Jun 29 21:43:03 2016 |
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| 13 | // Update Count : 296 |
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[51587aa] | 14 | // |
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[51b7345] | 15 | |
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[4e284ea6] | 16 | #include <algorithm> |
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| 17 | #include <iterator> |
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| 18 | #include <list> |
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| 19 | #include <map> |
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[51b7345] | 20 | #include <set> |
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[b1a6d6b] | 21 | #include <stack> |
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[51b7345] | 22 | #include <string> |
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[4e284ea6] | 23 | #include <utility> |
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| 24 | #include <vector> |
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[51b7345] | 25 | #include <cassert> |
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| 26 | |
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| 27 | #include "Box.h" |
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[9d7b3ea] | 28 | #include "DeclMutator.h" |
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[51b7345] | 29 | #include "PolyMutator.h" |
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| 30 | #include "FindFunction.h" |
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[89173242] | 31 | #include "ScopedSet.h" |
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[51b7345] | 32 | #include "ScrubTyVars.h" |
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| 33 | |
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[68cd1ce] | 34 | #include "Parser/ParseNode.h" |
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| 35 | |
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[cdec5af] | 36 | #include "SynTree/Constant.h" |
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[4e284ea6] | 37 | #include "SynTree/Declaration.h" |
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[51b7345] | 38 | #include "SynTree/Expression.h" |
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| 39 | #include "SynTree/Initializer.h" |
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| 40 | #include "SynTree/Mutator.h" |
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[4e284ea6] | 41 | #include "SynTree/Statement.h" |
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| 42 | #include "SynTree/Type.h" |
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| 43 | #include "SynTree/TypeSubstitution.h" |
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[68cd1ce] | 44 | |
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[51b7345] | 45 | #include "ResolvExpr/TypeEnvironment.h" |
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[dc12481] | 46 | #include "ResolvExpr/TypeMap.h" |
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| 47 | #include "ResolvExpr/typeops.h" |
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[68cd1ce] | 48 | |
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[4e284ea6] | 49 | #include "SymTab/Indexer.h" |
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[51b7345] | 50 | #include "SymTab/Mangler.h" |
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| 51 | |
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[e491159] | 52 | #include "Common/ScopedMap.h" |
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[d3b7937] | 53 | #include "Common/SemanticError.h" |
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| 54 | #include "Common/UniqueName.h" |
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| 55 | #include "Common/utility.h" |
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[51b7345] | 56 | |
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| 57 | #include <ext/functional> // temporary |
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| 58 | |
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| 59 | namespace GenPoly { |
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[01aeade] | 60 | namespace { |
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| 61 | const std::list<Label> noLabels; |
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| 62 | |
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[e56cfdb0] | 63 | FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars ); |
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| 64 | |
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[9d7b3ea] | 65 | /// Adds layout-generation functions to polymorphic types |
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[62e5546] | 66 | class LayoutFunctionBuilder final : public DeclMutator { |
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[9d7b3ea] | 67 | unsigned int functionNesting; // current level of nested functions |
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| 68 | public: |
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| 69 | LayoutFunctionBuilder() : functionNesting( 0 ) {} |
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| 70 | |
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[62e5546] | 71 | using DeclMutator::mutate; |
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| 72 | virtual DeclarationWithType *mutate( FunctionDecl *functionDecl ) override; |
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| 73 | virtual Declaration *mutate( StructDecl *structDecl ) override; |
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| 74 | virtual Declaration *mutate( UnionDecl *unionDecl ) override; |
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[9d7b3ea] | 75 | }; |
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[70a06f6] | 76 | |
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[f8b961b] | 77 | /// 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 |
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[62e5546] | 78 | class Pass1 final : public PolyMutator { |
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[01aeade] | 79 | public: |
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| 80 | Pass1(); |
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[62e5546] | 81 | |
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| 82 | using PolyMutator::mutate; |
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| 83 | virtual Expression *mutate( ApplicationExpr *appExpr ) override; |
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| 84 | virtual Expression *mutate( AddressExpr *addrExpr ) override; |
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| 85 | virtual Expression *mutate( UntypedExpr *expr ) override; |
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| 86 | virtual DeclarationWithType* mutate( FunctionDecl *functionDecl ) override; |
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| 87 | virtual TypeDecl *mutate( TypeDecl *typeDecl ) override; |
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| 88 | virtual Expression *mutate( CommaExpr *commaExpr ) override; |
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| 89 | virtual Expression *mutate( ConditionalExpr *condExpr ) override; |
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| 90 | virtual Statement * mutate( ReturnStmt *returnStmt ) override; |
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| 91 | virtual Type *mutate( PointerType *pointerType ) override; |
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| 92 | virtual Type * mutate( FunctionType *functionType ) override; |
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| 93 | |
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| 94 | virtual void doBeginScope() override; |
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| 95 | virtual void doEndScope() override; |
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[01aeade] | 96 | private: |
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[5c52b06] | 97 | /// Pass the extra type parameters from polymorphic generic arguments or return types into a function application |
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| 98 | void passArgTypeVars( ApplicationExpr *appExpr, Type *parmType, Type *argBaseType, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars, std::set< std::string > &seenTypes ); |
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[05d47278] | 99 | /// passes extra type parameters into a polymorphic function application |
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[5c52b06] | 100 | void passTypeVars( ApplicationExpr *appExpr, ReferenceToType *polyRetType, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ); |
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[48ca586] | 101 | /// wraps a function application with a new temporary for the out-parameter return value |
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[01aeade] | 102 | Expression *addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ); |
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[48ca586] | 103 | /// Replaces all the type parameters of a generic type with their concrete equivalents under the current environment |
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| 104 | void replaceParametersWithConcrete( ApplicationExpr *appExpr, std::list< Expression* >& params ); |
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| 105 | /// Replaces a polymorphic type with its concrete equivalant under the current environment (returns itself if concrete). |
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| 106 | /// If `doClone` is set to false, will not clone interior types |
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| 107 | Type *replaceWithConcrete( ApplicationExpr *appExpr, Type *type, bool doClone = true ); |
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| 108 | /// wraps a function application returning a polymorphic type with a new temporary for the out-parameter return value |
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[3bb195cb] | 109 | Expression *addDynRetParam( ApplicationExpr *appExpr, FunctionType *function, ReferenceToType *polyType, std::list< Expression *>::iterator &arg ); |
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[01aeade] | 110 | Expression *applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ); |
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| 111 | void boxParam( Type *formal, Expression *&arg, const TyVarMap &exprTyVars ); |
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| 112 | void boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ); |
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| 113 | void addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ); |
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[1194734] | 114 | /// Stores assignment operators from assertion list in local map of assignment operations |
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[8c49c0e] | 115 | void findTypeOps( const Type::ForallList &forall ); |
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[01aeade] | 116 | void passAdapters( ApplicationExpr *appExpr, FunctionType *functionType, const TyVarMap &exprTyVars ); |
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| 117 | FunctionDecl *makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ); |
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[05d47278] | 118 | /// Replaces intrinsic operator functions with their arithmetic desugaring |
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[01aeade] | 119 | Expression *handleIntrinsics( ApplicationExpr *appExpr ); |
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[05d47278] | 120 | /// Inserts a new temporary variable into the current scope with an auto-generated name |
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[01aeade] | 121 | ObjectDecl *makeTemporary( Type *type ); |
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[c29d9ce] | 122 | |
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[c2ad3c9] | 123 | ScopedMap< std::string, DeclarationWithType* > assignOps; ///< Currently known type variable assignment operators |
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| 124 | ScopedMap< std::string, DeclarationWithType* > ctorOps; ///< Currently known type variable constructors |
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| 125 | ScopedMap< std::string, DeclarationWithType* > copyOps; ///< Currently known type variable copy constructors |
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| 126 | ScopedMap< std::string, DeclarationWithType* > dtorOps; ///< Currently known type variable destructors |
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[89173242] | 127 | ResolvExpr::TypeMap< DeclarationWithType > scopedAssignOps; ///< Currently known assignment operators |
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[c2ad3c9] | 128 | ResolvExpr::TypeMap< DeclarationWithType > scopedCtorOps; ///< Currently known assignment operators |
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| 129 | ResolvExpr::TypeMap< DeclarationWithType > scopedCopyOps; ///< Currently known assignment operators |
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| 130 | ResolvExpr::TypeMap< DeclarationWithType > scopedDtorOps; ///< Currently known assignment operators |
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[89173242] | 131 | ScopedMap< std::string, DeclarationWithType* > adapters; ///< Set of adapter functions in the current scope |
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[70a06f6] | 132 | |
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[01aeade] | 133 | DeclarationWithType *retval; |
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| 134 | bool useRetval; |
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| 135 | UniqueName tempNamer; |
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| 136 | }; |
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| 137 | |
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[89173242] | 138 | /// * Moves polymorphic returns in function types to pointer-type parameters |
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| 139 | /// * adds type size and assertion parameters to parameter lists |
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[62e5546] | 140 | class Pass2 final : public PolyMutator { |
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[01aeade] | 141 | public: |
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| 142 | template< typename DeclClass > |
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| 143 | DeclClass *handleDecl( DeclClass *decl, Type *type ); |
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[62e5546] | 144 | |
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| 145 | using PolyMutator::mutate; |
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| 146 | virtual DeclarationWithType *mutate( FunctionDecl *functionDecl ) override; |
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| 147 | virtual ObjectDecl *mutate( ObjectDecl *objectDecl ) override; |
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| 148 | virtual TypeDecl *mutate( TypeDecl *typeDecl ) override; |
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| 149 | virtual TypedefDecl *mutate( TypedefDecl *typedefDecl ) override; |
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| 150 | virtual Type *mutate( PointerType *pointerType ) override; |
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| 151 | virtual Type *mutate( FunctionType *funcType ) override; |
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[70a06f6] | 152 | |
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[01aeade] | 153 | private: |
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| 154 | void addAdapters( FunctionType *functionType ); |
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[ae63a18] | 155 | |
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[01aeade] | 156 | std::map< UniqueId, std::string > adapterName; |
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| 157 | }; |
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| 158 | |
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[8a34677] | 159 | /// Replaces member and size/align/offsetof expressions on polymorphic generic types with calculated expressions. |
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| 160 | /// * Replaces member expressions for polymorphic types with calculated add-field-offset-and-dereference |
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| 161 | /// * Calculates polymorphic offsetof expressions from offset array |
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| 162 | /// * Inserts dynamic calculation of polymorphic type layouts where needed |
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[62e5546] | 163 | class PolyGenericCalculator final : public PolyMutator { |
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[8a34677] | 164 | public: |
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[1ba88a0] | 165 | typedef PolyMutator Parent; |
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| 166 | using Parent::mutate; |
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| 167 | |
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[05d47278] | 168 | template< typename DeclClass > |
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| 169 | DeclClass *handleDecl( DeclClass *decl, Type *type ); |
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[62e5546] | 170 | virtual DeclarationWithType *mutate( FunctionDecl *functionDecl ) override; |
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| 171 | virtual ObjectDecl *mutate( ObjectDecl *objectDecl ) override; |
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| 172 | virtual TypedefDecl *mutate( TypedefDecl *objectDecl ) override; |
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| 173 | virtual TypeDecl *mutate( TypeDecl *objectDecl ) override; |
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| 174 | virtual Statement *mutate( DeclStmt *declStmt ) override; |
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| 175 | virtual Type *mutate( PointerType *pointerType ) override; |
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| 176 | virtual Type *mutate( FunctionType *funcType ) override; |
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| 177 | virtual Expression *mutate( MemberExpr *memberExpr ) override; |
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| 178 | virtual Expression *mutate( SizeofExpr *sizeofExpr ) override; |
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| 179 | virtual Expression *mutate( AlignofExpr *alignofExpr ) override; |
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| 180 | virtual Expression *mutate( OffsetofExpr *offsetofExpr ) override; |
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| 181 | virtual Expression *mutate( OffsetPackExpr *offsetPackExpr ) override; |
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| 182 | |
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| 183 | virtual void doBeginScope() override; |
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| 184 | virtual void doEndScope() override; |
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[8a34677] | 185 | |
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| 186 | private: |
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| 187 | /// Makes a new variable in the current scope with the given name, type & optional initializer |
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| 188 | ObjectDecl *makeVar( const std::string &name, Type *type, Initializer *init = 0 ); |
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| 189 | /// returns true if the type has a dynamic layout; such a layout will be stored in appropriately-named local variables when the function returns |
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| 190 | bool findGeneric( Type *ty ); |
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| 191 | /// adds type parameters to the layout call; will generate the appropriate parameters if needed |
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| 192 | void addOtypeParamsToLayoutCall( UntypedExpr *layoutCall, const std::list< Type* > &otypeParams ); |
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[aa19ccf] | 193 | |
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| 194 | /// Enters a new scope for type-variables, adding the type variables from ty |
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| 195 | void beginTypeScope( Type *ty ); |
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| 196 | /// Exits the type-variable scope |
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| 197 | void endTypeScope(); |
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[70a06f6] | 198 | |
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[8a34677] | 199 | ScopedSet< std::string > knownLayouts; ///< Set of generic type layouts known in the current scope, indexed by sizeofName |
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| 200 | ScopedSet< std::string > knownOffsets; ///< Set of non-generic types for which the offset array exists in the current scope, indexed by offsetofName |
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[05d47278] | 201 | }; |
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[b4cd03b7] | 202 | |
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[f8b961b] | 203 | /// 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 |
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[62e5546] | 204 | class Pass3 final : public PolyMutator { |
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[01aeade] | 205 | public: |
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| 206 | template< typename DeclClass > |
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| 207 | DeclClass *handleDecl( DeclClass *decl, Type *type ); |
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[62e5546] | 208 | |
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| 209 | using PolyMutator::mutate; |
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| 210 | virtual DeclarationWithType *mutate( FunctionDecl *functionDecl ) override; |
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| 211 | virtual ObjectDecl *mutate( ObjectDecl *objectDecl ) override; |
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| 212 | virtual TypedefDecl *mutate( TypedefDecl *objectDecl ) override; |
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| 213 | virtual TypeDecl *mutate( TypeDecl *objectDecl ) override; |
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| 214 | virtual Type *mutate( PointerType *pointerType ) override; |
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| 215 | virtual Type *mutate( FunctionType *funcType ) override; |
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[01aeade] | 216 | private: |
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| 217 | }; |
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| 218 | |
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| 219 | } // anonymous namespace |
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| 220 | |
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[05d47278] | 221 | /// version of mutateAll with special handling for translation unit so you can check the end of the prelude when debugging |
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| 222 | template< typename MutatorType > |
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| 223 | inline void mutateTranslationUnit( std::list< Declaration* > &translationUnit, MutatorType &mutator ) { |
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| 224 | bool seenIntrinsic = false; |
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| 225 | SemanticError errors; |
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| 226 | for ( typename std::list< Declaration* >::iterator i = translationUnit.begin(); i != translationUnit.end(); ++i ) { |
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| 227 | try { |
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| 228 | if ( *i ) { |
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| 229 | if ( (*i)->get_linkage() == LinkageSpec::Intrinsic ) { |
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| 230 | seenIntrinsic = true; |
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| 231 | } else if ( seenIntrinsic ) { |
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| 232 | seenIntrinsic = false; // break on this line when debugging for end of prelude |
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| 233 | } |
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[b4cd03b7] | 234 | |
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[05d47278] | 235 | *i = dynamic_cast< Declaration* >( (*i)->acceptMutator( mutator ) ); |
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| 236 | assert( *i ); |
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| 237 | } // if |
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| 238 | } catch( SemanticError &e ) { |
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| 239 | errors.append( e ); |
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| 240 | } // try |
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| 241 | } // for |
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| 242 | if ( ! errors.isEmpty() ) { |
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| 243 | throw errors; |
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| 244 | } // if |
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| 245 | } |
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| 246 | |
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[01aeade] | 247 | void box( std::list< Declaration *>& translationUnit ) { |
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[9d7b3ea] | 248 | LayoutFunctionBuilder layoutBuilder; |
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[01aeade] | 249 | Pass1 pass1; |
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| 250 | Pass2 pass2; |
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[8a34677] | 251 | PolyGenericCalculator polyCalculator; |
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[01aeade] | 252 | Pass3 pass3; |
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[70a06f6] | 253 | |
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[9d7b3ea] | 254 | layoutBuilder.mutateDeclarationList( translationUnit ); |
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[05d47278] | 255 | mutateTranslationUnit/*All*/( translationUnit, pass1 ); |
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| 256 | mutateTranslationUnit/*All*/( translationUnit, pass2 ); |
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[8a34677] | 257 | mutateTranslationUnit/*All*/( translationUnit, polyCalculator ); |
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[05d47278] | 258 | mutateTranslationUnit/*All*/( translationUnit, pass3 ); |
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[6c3744e] | 259 | } |
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| 260 | |
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[9d7b3ea] | 261 | ////////////////////////////////// LayoutFunctionBuilder //////////////////////////////////////////// |
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| 262 | |
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| 263 | DeclarationWithType *LayoutFunctionBuilder::mutate( FunctionDecl *functionDecl ) { |
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| 264 | functionDecl->set_functionType( maybeMutate( functionDecl->get_functionType(), *this ) ); |
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| 265 | mutateAll( functionDecl->get_oldDecls(), *this ); |
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| 266 | ++functionNesting; |
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| 267 | functionDecl->set_statements( maybeMutate( functionDecl->get_statements(), *this ) ); |
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| 268 | --functionNesting; |
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| 269 | return functionDecl; |
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| 270 | } |
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[70a06f6] | 271 | |
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[9d7b3ea] | 272 | /// Get a list of type declarations that will affect a layout function |
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| 273 | std::list< TypeDecl* > takeOtypeOnly( std::list< TypeDecl* > &decls ) { |
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| 274 | std::list< TypeDecl * > otypeDecls; |
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| 275 | |
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| 276 | for ( std::list< TypeDecl* >::const_iterator decl = decls.begin(); decl != decls.end(); ++decl ) { |
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[3627356] | 277 | if ( (*decl)->get_kind() == TypeDecl::Any ) { |
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[9d7b3ea] | 278 | otypeDecls.push_back( *decl ); |
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| 279 | } |
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| 280 | } |
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[70a06f6] | 281 | |
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[9d7b3ea] | 282 | return otypeDecls; |
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| 283 | } |
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| 284 | |
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| 285 | /// Adds parameters for otype layout to a function type |
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| 286 | void addOtypeParams( FunctionType *layoutFnType, std::list< TypeDecl* > &otypeParams ) { |
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| 287 | BasicType sizeAlignType( Type::Qualifiers(), BasicType::LongUnsignedInt ); |
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[70a06f6] | 288 | |
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[9d7b3ea] | 289 | for ( std::list< TypeDecl* >::const_iterator param = otypeParams.begin(); param != otypeParams.end(); ++param ) { |
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[2e60a1a] | 290 | TypeInstType paramType( Type::Qualifiers(), (*param)->get_name(), *param ); |
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[adc6781] | 291 | std::string paramName = mangleType( ¶mType ); |
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| 292 | layoutFnType->get_parameters().push_back( new ObjectDecl( sizeofName( paramName ), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, sizeAlignType.clone(), 0 ) ); |
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| 293 | layoutFnType->get_parameters().push_back( new ObjectDecl( alignofName( paramName ), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, sizeAlignType.clone(), 0 ) ); |
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[9d7b3ea] | 294 | } |
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| 295 | } |
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| 296 | |
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| 297 | /// Builds a layout function declaration |
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[adc6781] | 298 | FunctionDecl *buildLayoutFunctionDecl( AggregateDecl *typeDecl, unsigned int functionNesting, FunctionType *layoutFnType ) { |
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[9d7b3ea] | 299 | // Routines at global scope marked "static" to prevent multiple definitions is separate translation units |
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| 300 | // because each unit generates copies of the default routines for each aggregate. |
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| 301 | FunctionDecl *layoutDecl = new FunctionDecl( |
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[adc6781] | 302 | layoutofName( typeDecl ), functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, layoutFnType, new CompoundStmt( noLabels ), true, false ); |
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[9d7b3ea] | 303 | layoutDecl->fixUniqueId(); |
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| 304 | return layoutDecl; |
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| 305 | } |
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| 306 | |
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| 307 | /// Makes a unary operation |
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| 308 | Expression *makeOp( const std::string &name, Expression *arg ) { |
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| 309 | UntypedExpr *expr = new UntypedExpr( new NameExpr( name ) ); |
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| 310 | expr->get_args().push_back( arg ); |
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| 311 | return expr; |
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| 312 | } |
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| 313 | |
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| 314 | /// Makes a binary operation |
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| 315 | Expression *makeOp( const std::string &name, Expression *lhs, Expression *rhs ) { |
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| 316 | UntypedExpr *expr = new UntypedExpr( new NameExpr( name ) ); |
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| 317 | expr->get_args().push_back( lhs ); |
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| 318 | expr->get_args().push_back( rhs ); |
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| 319 | return expr; |
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| 320 | } |
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| 321 | |
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| 322 | /// Returns the dereference of a local pointer variable |
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| 323 | Expression *derefVar( ObjectDecl *var ) { |
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| 324 | return makeOp( "*?", new VariableExpr( var ) ); |
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| 325 | } |
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| 326 | |
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| 327 | /// makes an if-statement with a single-expression if-block and no then block |
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| 328 | Statement *makeCond( Expression *cond, Expression *ifPart ) { |
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[3627356] | 329 | return new IfStmt( noLabels, cond, new ExprStmt( noLabels, ifPart ), 0 ); |
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[9d7b3ea] | 330 | } |
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| 331 | |
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| 332 | /// makes a statement that assigns rhs to lhs if lhs < rhs |
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| 333 | Statement *makeAssignMax( Expression *lhs, Expression *rhs ) { |
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| 334 | return makeCond( makeOp( "?<?", lhs, rhs ), makeOp( "?=?", lhs->clone(), rhs->clone() ) ); |
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| 335 | } |
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| 336 | |
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| 337 | /// makes a statement that aligns lhs to rhs (rhs should be an integer power of two) |
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| 338 | Statement *makeAlignTo( Expression *lhs, Expression *rhs ) { |
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| 339 | // check that the lhs is zeroed out to the level of rhs |
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| 340 | Expression *ifCond = makeOp( "?&?", lhs, makeOp( "?-?", rhs, new ConstantExpr( Constant( new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), "1" ) ) ) ); |
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| 341 | // if not aligned, increment to alignment |
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| 342 | Expression *ifExpr = makeOp( "?+=?", lhs->clone(), makeOp( "?-?", rhs->clone(), ifCond->clone() ) ); |
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| 343 | return makeCond( ifCond, ifExpr ); |
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| 344 | } |
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[70a06f6] | 345 | |
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[9d7b3ea] | 346 | /// adds an expression to a compound statement |
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| 347 | void addExpr( CompoundStmt *stmts, Expression *expr ) { |
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| 348 | stmts->get_kids().push_back( new ExprStmt( noLabels, expr ) ); |
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| 349 | } |
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| 350 | |
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| 351 | /// adds a statement to a compound statement |
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| 352 | void addStmt( CompoundStmt *stmts, Statement *stmt ) { |
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| 353 | stmts->get_kids().push_back( stmt ); |
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| 354 | } |
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[70a06f6] | 355 | |
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[3627356] | 356 | Declaration *LayoutFunctionBuilder::mutate( StructDecl *structDecl ) { |
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[9d7b3ea] | 357 | // do not generate layout function for "empty" tag structs |
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| 358 | if ( structDecl->get_members().empty() ) return structDecl; |
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| 359 | |
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| 360 | // get parameters that can change layout, exiting early if none |
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| 361 | std::list< TypeDecl* > otypeParams = takeOtypeOnly( structDecl->get_parameters() ); |
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| 362 | if ( otypeParams.empty() ) return structDecl; |
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| 363 | |
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| 364 | // build layout function signature |
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| 365 | FunctionType *layoutFnType = new FunctionType( Type::Qualifiers(), false ); |
---|
| 366 | BasicType *sizeAlignType = new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ); |
---|
| 367 | PointerType *sizeAlignOutType = new PointerType( Type::Qualifiers(), sizeAlignType ); |
---|
[70a06f6] | 368 | |
---|
[adc6781] | 369 | ObjectDecl *sizeParam = new ObjectDecl( sizeofName( structDecl->get_name() ), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, sizeAlignOutType, 0 ); |
---|
[9d7b3ea] | 370 | layoutFnType->get_parameters().push_back( sizeParam ); |
---|
[adc6781] | 371 | ObjectDecl *alignParam = new ObjectDecl( alignofName( structDecl->get_name() ), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, sizeAlignOutType->clone(), 0 ); |
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[9d7b3ea] | 372 | layoutFnType->get_parameters().push_back( alignParam ); |
---|
[adc6781] | 373 | ObjectDecl *offsetParam = new ObjectDecl( offsetofName( structDecl->get_name() ), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, sizeAlignOutType->clone(), 0 ); |
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[9d7b3ea] | 374 | layoutFnType->get_parameters().push_back( offsetParam ); |
---|
| 375 | addOtypeParams( layoutFnType, otypeParams ); |
---|
| 376 | |
---|
| 377 | // build function decl |
---|
[adc6781] | 378 | FunctionDecl *layoutDecl = buildLayoutFunctionDecl( structDecl, functionNesting, layoutFnType ); |
---|
[9d7b3ea] | 379 | |
---|
| 380 | // calculate struct layout in function body |
---|
| 381 | |
---|
| 382 | // initialize size and alignment to 0 and 1 (will have at least one member to re-edit size |
---|
| 383 | addExpr( layoutDecl->get_statements(), makeOp( "?=?", derefVar( sizeParam ), new ConstantExpr( Constant( sizeAlignType->clone(), "0" ) ) ) ); |
---|
| 384 | addExpr( layoutDecl->get_statements(), makeOp( "?=?", derefVar( alignParam ), new ConstantExpr( Constant( sizeAlignType->clone(), "1" ) ) ) ); |
---|
| 385 | unsigned long n_members = 0; |
---|
| 386 | bool firstMember = true; |
---|
| 387 | for ( std::list< Declaration* >::const_iterator member = structDecl->get_members().begin(); member != structDecl->get_members().end(); ++member ) { |
---|
| 388 | DeclarationWithType *dwt = dynamic_cast< DeclarationWithType * >( *member ); |
---|
| 389 | assert( dwt ); |
---|
[bd91e2a] | 390 | Type *memberType = dwt->get_type(); |
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[9d7b3ea] | 391 | |
---|
| 392 | if ( firstMember ) { |
---|
| 393 | firstMember = false; |
---|
| 394 | } else { |
---|
| 395 | // make sure all members after the first (automatically aligned at 0) are properly padded for alignment |
---|
[bd91e2a] | 396 | addStmt( layoutDecl->get_statements(), makeAlignTo( derefVar( sizeParam ), new AlignofExpr( memberType->clone() ) ) ); |
---|
[9d7b3ea] | 397 | } |
---|
[70a06f6] | 398 | |
---|
[9d7b3ea] | 399 | // place current size in the current offset index |
---|
[cb4c607] | 400 | addExpr( layoutDecl->get_statements(), makeOp( "?=?", makeOp( "?[?]", new VariableExpr( offsetParam ), new ConstantExpr( Constant::from_ulong( n_members ) ) ), |
---|
[9d7b3ea] | 401 | derefVar( sizeParam ) ) ); |
---|
| 402 | ++n_members; |
---|
| 403 | |
---|
| 404 | // add member size to current size |
---|
[bd91e2a] | 405 | addExpr( layoutDecl->get_statements(), makeOp( "?+=?", derefVar( sizeParam ), new SizeofExpr( memberType->clone() ) ) ); |
---|
[70a06f6] | 406 | |
---|
[9d7b3ea] | 407 | // take max of member alignment and global alignment |
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[bd91e2a] | 408 | addStmt( layoutDecl->get_statements(), makeAssignMax( derefVar( alignParam ), new AlignofExpr( memberType->clone() ) ) ); |
---|
[9d7b3ea] | 409 | } |
---|
| 410 | // make sure the type is end-padded to a multiple of its alignment |
---|
| 411 | addStmt( layoutDecl->get_statements(), makeAlignTo( derefVar( sizeParam ), derefVar( alignParam ) ) ); |
---|
| 412 | |
---|
| 413 | addDeclarationAfter( layoutDecl ); |
---|
| 414 | return structDecl; |
---|
| 415 | } |
---|
[70a06f6] | 416 | |
---|
[3627356] | 417 | Declaration *LayoutFunctionBuilder::mutate( UnionDecl *unionDecl ) { |
---|
[9d7b3ea] | 418 | // do not generate layout function for "empty" tag unions |
---|
| 419 | if ( unionDecl->get_members().empty() ) return unionDecl; |
---|
[70a06f6] | 420 | |
---|
[9d7b3ea] | 421 | // get parameters that can change layout, exiting early if none |
---|
| 422 | std::list< TypeDecl* > otypeParams = takeOtypeOnly( unionDecl->get_parameters() ); |
---|
| 423 | if ( otypeParams.empty() ) return unionDecl; |
---|
| 424 | |
---|
| 425 | // build layout function signature |
---|
| 426 | FunctionType *layoutFnType = new FunctionType( Type::Qualifiers(), false ); |
---|
| 427 | BasicType *sizeAlignType = new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ); |
---|
| 428 | PointerType *sizeAlignOutType = new PointerType( Type::Qualifiers(), sizeAlignType ); |
---|
[70a06f6] | 429 | |
---|
[adc6781] | 430 | ObjectDecl *sizeParam = new ObjectDecl( sizeofName( unionDecl->get_name() ), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, sizeAlignOutType, 0 ); |
---|
[9d7b3ea] | 431 | layoutFnType->get_parameters().push_back( sizeParam ); |
---|
[adc6781] | 432 | ObjectDecl *alignParam = new ObjectDecl( alignofName( unionDecl->get_name() ), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, sizeAlignOutType->clone(), 0 ); |
---|
[9d7b3ea] | 433 | layoutFnType->get_parameters().push_back( alignParam ); |
---|
| 434 | addOtypeParams( layoutFnType, otypeParams ); |
---|
| 435 | |
---|
| 436 | // build function decl |
---|
[adc6781] | 437 | FunctionDecl *layoutDecl = buildLayoutFunctionDecl( unionDecl, functionNesting, layoutFnType ); |
---|
[9d7b3ea] | 438 | |
---|
| 439 | // calculate union layout in function body |
---|
| 440 | addExpr( layoutDecl->get_statements(), makeOp( "?=?", derefVar( sizeParam ), new ConstantExpr( Constant( sizeAlignType->clone(), "1" ) ) ) ); |
---|
| 441 | addExpr( layoutDecl->get_statements(), makeOp( "?=?", derefVar( alignParam ), new ConstantExpr( Constant( sizeAlignType->clone(), "1" ) ) ) ); |
---|
| 442 | for ( std::list< Declaration* >::const_iterator member = unionDecl->get_members().begin(); member != unionDecl->get_members().end(); ++member ) { |
---|
| 443 | DeclarationWithType *dwt = dynamic_cast< DeclarationWithType * >( *member ); |
---|
| 444 | assert( dwt ); |
---|
[bd91e2a] | 445 | Type *memberType = dwt->get_type(); |
---|
[70a06f6] | 446 | |
---|
[9d7b3ea] | 447 | // take max member size and global size |
---|
[bd91e2a] | 448 | addStmt( layoutDecl->get_statements(), makeAssignMax( derefVar( sizeParam ), new SizeofExpr( memberType->clone() ) ) ); |
---|
[70a06f6] | 449 | |
---|
[9d7b3ea] | 450 | // take max of member alignment and global alignment |
---|
[bd91e2a] | 451 | addStmt( layoutDecl->get_statements(), makeAssignMax( derefVar( alignParam ), new AlignofExpr( memberType->clone() ) ) ); |
---|
[9d7b3ea] | 452 | } |
---|
| 453 | // make sure the type is end-padded to a multiple of its alignment |
---|
| 454 | addStmt( layoutDecl->get_statements(), makeAlignTo( derefVar( sizeParam ), derefVar( alignParam ) ) ); |
---|
| 455 | |
---|
| 456 | addDeclarationAfter( layoutDecl ); |
---|
| 457 | return unionDecl; |
---|
| 458 | } |
---|
[70a06f6] | 459 | |
---|
[01aeade] | 460 | ////////////////////////////////////////// Pass1 //////////////////////////////////////////////////// |
---|
| 461 | |
---|
| 462 | namespace { |
---|
[bdf1954] | 463 | std::string makePolyMonoSuffix( FunctionType * function, const TyVarMap &tyVars ) { |
---|
| 464 | std::stringstream name; |
---|
| 465 | |
---|
[ed1065c] | 466 | // NOTE: this function previously used isPolyObj, which failed to produce |
---|
| 467 | // the correct thing in some situations. It's not clear to me why this wasn't working. |
---|
| 468 | |
---|
[ae63a18] | 469 | // if the return type or a parameter type involved polymorphic types, then the adapter will need |
---|
| 470 | // to take those polymorphic types as pointers. Therefore, there can be two different functions |
---|
[bdf1954] | 471 | // with the same mangled name, so we need to further mangle the names. |
---|
[ed1065c] | 472 | for ( std::list< DeclarationWithType *>::iterator retval = function->get_returnVals().begin(); retval != function->get_returnVals().end(); ++retval ) { |
---|
[ffad73a] | 473 | if ( isPolyType( (*retval)->get_type(), tyVars ) ) { |
---|
[ed1065c] | 474 | name << "P"; |
---|
| 475 | } else { |
---|
| 476 | name << "M"; |
---|
| 477 | } |
---|
[bdf1954] | 478 | } |
---|
| 479 | name << "_"; |
---|
| 480 | std::list< DeclarationWithType *> ¶mList = function->get_parameters(); |
---|
| 481 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
---|
[ffad73a] | 482 | if ( isPolyType( (*arg)->get_type(), tyVars ) ) { |
---|
[bdf1954] | 483 | name << "P"; |
---|
| 484 | } else { |
---|
[ae63a18] | 485 | name << "M"; |
---|
[bdf1954] | 486 | } |
---|
| 487 | } // for |
---|
| 488 | return name.str(); |
---|
| 489 | } |
---|
| 490 | |
---|
| 491 | std::string mangleAdapterName( FunctionType * function, const TyVarMap &tyVars ) { |
---|
| 492 | return SymTab::Mangler::mangle( function ) + makePolyMonoSuffix( function, tyVars ); |
---|
| 493 | } |
---|
| 494 | |
---|
[01aeade] | 495 | std::string makeAdapterName( const std::string &mangleName ) { |
---|
| 496 | return "_adapter" + mangleName; |
---|
| 497 | } |
---|
[6c3744e] | 498 | |
---|
[6635c74] | 499 | Pass1::Pass1() : useRetval( false ), tempNamer( "_temp" ) {} |
---|
[01aeade] | 500 | |
---|
[c2ad3c9] | 501 | /// Returns T if the given declaration is a function with parameter (T*) for some TypeInstType T, NULL otherwise |
---|
| 502 | TypeInstType *isTypeInstPtrFn( DeclarationWithType *decl ) { |
---|
| 503 | if ( FunctionType *funType = getFunctionType( decl->get_type() ) ) { |
---|
| 504 | if ( funType->get_parameters().size() == 1 ) { |
---|
| 505 | if ( PointerType *pointer = dynamic_cast< PointerType *>( funType->get_parameters().front()->get_type() ) ) { |
---|
| 506 | if ( TypeInstType *refType = dynamic_cast< TypeInstType *>( pointer->get_base() ) ) { |
---|
| 507 | return refType; |
---|
| 508 | } // if |
---|
| 509 | } // if |
---|
| 510 | } // if |
---|
| 511 | } // if |
---|
| 512 | return 0; |
---|
| 513 | } |
---|
[9799ec8] | 514 | |
---|
[c2ad3c9] | 515 | /// Returns T if the given declaration is a function with parameters (T*, T) for some TypeInstType T, NULL otherwise |
---|
| 516 | TypeInstType *isTypeInstPtrValFn( DeclarationWithType *decl ) { |
---|
| 517 | if ( FunctionType *funType = getFunctionType( decl->get_type() ) ) { |
---|
| 518 | if ( funType->get_parameters().size() == 2 ) { |
---|
| 519 | if ( PointerType *pointer = dynamic_cast< PointerType *>( funType->get_parameters().front()->get_type() ) ) { |
---|
| 520 | if ( TypeInstType *refType = dynamic_cast< TypeInstType *>( pointer->get_base() ) ) { |
---|
| 521 | if ( TypeInstType *refType2 = dynamic_cast< TypeInstType *>( funType->get_parameters().back()->get_type() ) ) { |
---|
| 522 | if ( refType->get_name() == refType2->get_name() ) { |
---|
| 523 | return refType; |
---|
[01aeade] | 524 | } // if |
---|
| 525 | } // if |
---|
| 526 | } // if |
---|
| 527 | } // if |
---|
| 528 | } // if |
---|
| 529 | } // if |
---|
[1194734] | 530 | return 0; |
---|
[01aeade] | 531 | } |
---|
[9799ec8] | 532 | |
---|
[c2ad3c9] | 533 | /// Returns T if the given declaration is (*?=?)(T *, T) for some TypeInstType T (return not checked, but maybe should be), NULL otherwise |
---|
| 534 | TypeInstType *isTypeInstAssignment( DeclarationWithType *decl ) { |
---|
| 535 | return decl->get_name() == "?=?" ? isTypeInstPtrValFn( decl ) : 0; |
---|
| 536 | } |
---|
[70a06f6] | 537 | |
---|
[c2ad3c9] | 538 | /// Returns T if the given declaration is (*?{})(T *) for some TypeInstType T (return not checked, but maybe should be), NULL otherwise |
---|
| 539 | TypeInstType *isTypeInstCtor( DeclarationWithType *decl ) { |
---|
| 540 | return decl->get_name() == "?{}" ? isTypeInstPtrFn( decl ) : 0; |
---|
| 541 | } |
---|
| 542 | |
---|
| 543 | /// Returns T if the given declaration is (*?{})(T *, T) for some TypeInstType T (return not checked, but maybe should be), NULL otherwise |
---|
| 544 | TypeInstType *isTypeInstCopy( DeclarationWithType *decl ) { |
---|
| 545 | return decl->get_name() == "?{}" ? isTypeInstPtrValFn( decl ) : 0; |
---|
| 546 | } |
---|
| 547 | |
---|
| 548 | /// Returns T if the given declaration is (*^?{})(T *) for some TypeInstType T (return not checked, but maybe should be), NULL otherwise |
---|
| 549 | TypeInstType *isTypeInstDtor( DeclarationWithType *decl ) { |
---|
| 550 | return decl->get_name() == "^?{}" ? isTypeInstPtrFn( decl ) : 0; |
---|
| 551 | } |
---|
| 552 | |
---|
| 553 | /// Returns T if the given declaration is a function with parameters (T*, T) for some type T, where neither parameter is cv-qualified, |
---|
| 554 | /// NULL otherwise |
---|
| 555 | Type *isNoCvPtrFn( DeclarationWithType *decl ) { |
---|
| 556 | if ( FunctionType *funType = getFunctionType( decl->get_type() ) ) { |
---|
| 557 | if ( funType->get_parameters().size() == 1 ) { |
---|
| 558 | Type::Qualifiers defaultQualifiers; |
---|
| 559 | Type *paramType = funType->get_parameters().front()->get_type(); |
---|
| 560 | if ( paramType->get_qualifiers() != defaultQualifiers ) return 0; |
---|
| 561 | |
---|
| 562 | if ( PointerType *pointerType = dynamic_cast< PointerType* >( paramType ) ) { |
---|
| 563 | Type *baseType = pointerType->get_base(); |
---|
| 564 | if ( baseType->get_qualifiers() == defaultQualifiers ) { |
---|
| 565 | return baseType; |
---|
| 566 | } // if |
---|
| 567 | } // if |
---|
| 568 | } // if |
---|
| 569 | } // if |
---|
| 570 | return 0; |
---|
| 571 | } |
---|
[9799ec8] | 572 | |
---|
[c2ad3c9] | 573 | /// Returns T if the given declaration is a function with parameters (T*, T) for some type T, where neither parameter is cv-qualified, |
---|
| 574 | /// NULL otherwise |
---|
| 575 | Type *isNoCvPtrValFn( DeclarationWithType *decl ) { |
---|
| 576 | if ( FunctionType *funType = getFunctionType( decl->get_type() ) ) { |
---|
| 577 | if ( funType->get_parameters().size() == 2 ) { |
---|
| 578 | Type::Qualifiers defaultQualifiers; |
---|
| 579 | Type *paramType1 = funType->get_parameters().front()->get_type(); |
---|
| 580 | if ( paramType1->get_qualifiers() != defaultQualifiers ) return 0; |
---|
| 581 | Type *paramType2 = funType->get_parameters().back()->get_type(); |
---|
| 582 | if ( paramType2->get_qualifiers() != defaultQualifiers ) return 0; |
---|
| 583 | |
---|
| 584 | if ( PointerType *pointerType = dynamic_cast< PointerType* >( paramType1 ) ) { |
---|
| 585 | Type *baseType1 = pointerType->get_base(); |
---|
| 586 | if ( baseType1->get_qualifiers() != defaultQualifiers ) return 0; |
---|
| 587 | SymTab::Indexer dummy; |
---|
| 588 | if ( ResolvExpr::typesCompatible( baseType1, paramType2, dummy ) ) { |
---|
| 589 | return baseType1; |
---|
[dc12481] | 590 | } // if |
---|
| 591 | } // if |
---|
| 592 | } // if |
---|
| 593 | } // if |
---|
| 594 | return 0; |
---|
| 595 | } |
---|
[01aeade] | 596 | |
---|
[c2ad3c9] | 597 | /// returns T if the given declaration is: (*?=?)(T *, T) for some type T (return not checked, but maybe should be), NULL otherwise |
---|
| 598 | /// Only picks assignments where neither parameter is cv-qualified |
---|
| 599 | Type *isAssignment( DeclarationWithType *decl ) { |
---|
| 600 | return decl->get_name() == "?=?" ? isNoCvPtrValFn( decl ) : 0; |
---|
| 601 | } |
---|
| 602 | |
---|
| 603 | /// returns T if the given declaration is: (*?{})(T *) for some type T, NULL otherwise |
---|
| 604 | /// Only picks ctors where the parameter is not cv-qualified |
---|
| 605 | Type *isCtor( DeclarationWithType *decl ) { |
---|
| 606 | return decl->get_name() == "?{}" ? isNoCvPtrFn( decl ) : 0; |
---|
| 607 | } |
---|
| 608 | |
---|
| 609 | /// returns T if the given declaration is: (*?{})(T *, T) for some type T (return not checked, but maybe should be), NULL otherwise |
---|
| 610 | /// Only picks copy constructors where neither parameter is cv-qualified |
---|
| 611 | Type *isCopy( DeclarationWithType *decl ) { |
---|
| 612 | return decl->get_name() == "?{}" ? isNoCvPtrValFn( decl ) : 0; |
---|
| 613 | } |
---|
| 614 | |
---|
| 615 | /// returns T if the given declaration is: (*?{})(T *) for some type T, NULL otherwise |
---|
| 616 | /// Only picks ctors where the parameter is not cv-qualified |
---|
| 617 | Type *isDtor( DeclarationWithType *decl ) { |
---|
| 618 | return decl->get_name() == "^?{}" ? isNoCvPtrFn( decl ) : 0; |
---|
| 619 | } |
---|
| 620 | |
---|
[8c49c0e] | 621 | void Pass1::findTypeOps( const Type::ForallList &forall ) { |
---|
[ed1065c] | 622 | // what if a nested function uses an assignment operator? |
---|
| 623 | // assignOps.clear(); |
---|
[8c49c0e] | 624 | for ( Type::ForallList::const_iterator i = forall.begin(); i != forall.end(); ++i ) { |
---|
[01aeade] | 625 | for ( std::list< DeclarationWithType *>::const_iterator assert = (*i)->get_assertions().begin(); assert != (*i)->get_assertions().end(); ++assert ) { |
---|
| 626 | std::string typeName; |
---|
[dc12481] | 627 | if ( TypeInstType *typeInst = isTypeInstAssignment( *assert ) ) { |
---|
[1194734] | 628 | assignOps[ typeInst->get_name() ] = *assert; |
---|
[c2ad3c9] | 629 | } else if ( TypeInstType *typeInst = isTypeInstCtor( *assert ) ) { |
---|
| 630 | ctorOps[ typeInst->get_name() ] = *assert; |
---|
| 631 | } else if ( TypeInstType *typeInst = isTypeInstCopy( *assert ) ) { |
---|
| 632 | copyOps[ typeInst->get_name() ] = *assert; |
---|
| 633 | } else if ( TypeInstType *typeInst = isTypeInstDtor( *assert ) ) { |
---|
| 634 | dtorOps[ typeInst->get_name() ] = *assert; |
---|
[01aeade] | 635 | } // if |
---|
| 636 | } // for |
---|
| 637 | } // for |
---|
| 638 | } |
---|
| 639 | |
---|
[82dd287] | 640 | DeclarationWithType *Pass1::mutate( FunctionDecl *functionDecl ) { |
---|
[89173242] | 641 | // if this is a assignment function, put it in the map for this scope |
---|
[c2ad3c9] | 642 | if ( Type *paramType = isAssignment( functionDecl ) ) { |
---|
| 643 | if ( ! dynamic_cast< TypeInstType* >( paramType ) ) { |
---|
| 644 | scopedAssignOps.insert( paramType, functionDecl ); |
---|
| 645 | } |
---|
| 646 | } else if ( Type *paramType = isCtor( functionDecl ) ) { |
---|
| 647 | if ( ! dynamic_cast< TypeInstType* >( paramType ) ) { |
---|
| 648 | scopedCtorOps.insert( paramType, functionDecl ); |
---|
| 649 | } |
---|
| 650 | } else if ( Type *paramType = isCopy( functionDecl ) ) { |
---|
| 651 | if ( ! dynamic_cast< TypeInstType* >( paramType ) ) { |
---|
| 652 | scopedCopyOps.insert( paramType, functionDecl ); |
---|
| 653 | } |
---|
| 654 | } else if ( Type *paramType = isDtor( functionDecl ) ) { |
---|
| 655 | if ( ! dynamic_cast< TypeInstType* >( paramType ) ) { |
---|
| 656 | scopedDtorOps.insert( paramType, functionDecl ); |
---|
[1194734] | 657 | } |
---|
| 658 | } |
---|
[b4cd03b7] | 659 | |
---|
[e56cfdb0] | 660 | if ( functionDecl->get_statements() ) { // empty routine body ? |
---|
| 661 | doBeginScope(); |
---|
[4b8f918] | 662 | scopeTyVars.beginScope(); |
---|
[63c0dbf] | 663 | assignOps.beginScope(); |
---|
[c2ad3c9] | 664 | ctorOps.beginScope(); |
---|
| 665 | copyOps.beginScope(); |
---|
| 666 | dtorOps.beginScope(); |
---|
[9799ec8] | 667 | |
---|
[01aeade] | 668 | DeclarationWithType *oldRetval = retval; |
---|
| 669 | bool oldUseRetval = useRetval; |
---|
[e56cfdb0] | 670 | |
---|
| 671 | // process polymorphic return value |
---|
[01aeade] | 672 | retval = 0; |
---|
[3bb195cb] | 673 | if ( isDynRet( functionDecl->get_functionType() ) && functionDecl->get_linkage() == LinkageSpec::Cforall ) { |
---|
[01aeade] | 674 | retval = functionDecl->get_functionType()->get_returnVals().front(); |
---|
[ae63a18] | 675 | |
---|
[01aeade] | 676 | // give names to unnamed return values |
---|
| 677 | if ( retval->get_name() == "" ) { |
---|
| 678 | retval->set_name( "_retparm" ); |
---|
| 679 | retval->set_linkage( LinkageSpec::C ); |
---|
| 680 | } // if |
---|
| 681 | } // if |
---|
[ae63a18] | 682 | |
---|
[e56cfdb0] | 683 | FunctionType *functionType = functionDecl->get_functionType(); |
---|
[01aeade] | 684 | makeTyVarMap( functionDecl->get_functionType(), scopeTyVars ); |
---|
[c2ad3c9] | 685 | findTypeOps( functionDecl->get_functionType()->get_forall() ); |
---|
[e56cfdb0] | 686 | |
---|
| 687 | std::list< DeclarationWithType *> ¶mList = functionType->get_parameters(); |
---|
| 688 | std::list< FunctionType *> functions; |
---|
[8c49c0e] | 689 | for ( Type::ForallList::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) { |
---|
[e56cfdb0] | 690 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) { |
---|
| 691 | findFunction( (*assert)->get_type(), functions, scopeTyVars, needsAdapter ); |
---|
| 692 | } // for |
---|
| 693 | } // for |
---|
| 694 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
---|
| 695 | findFunction( (*arg)->get_type(), functions, scopeTyVars, needsAdapter ); |
---|
| 696 | } // for |
---|
[b4cd03b7] | 697 | |
---|
[e56cfdb0] | 698 | for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) { |
---|
[bdf1954] | 699 | std::string mangleName = mangleAdapterName( *funType, scopeTyVars ); |
---|
[e56cfdb0] | 700 | if ( adapters.find( mangleName ) == adapters.end() ) { |
---|
| 701 | std::string adapterName = makeAdapterName( mangleName ); |
---|
| 702 | adapters.insert( std::pair< std::string, DeclarationWithType *>( mangleName, new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) ) ); |
---|
| 703 | } // if |
---|
| 704 | } // for |
---|
| 705 | |
---|
[01aeade] | 706 | functionDecl->set_statements( functionDecl->get_statements()->acceptMutator( *this ) ); |
---|
[ae63a18] | 707 | |
---|
[6f49cdf] | 708 | scopeTyVars.endScope(); |
---|
[63c0dbf] | 709 | assignOps.endScope(); |
---|
[c2ad3c9] | 710 | ctorOps.endScope(); |
---|
| 711 | copyOps.endScope(); |
---|
| 712 | dtorOps.endScope(); |
---|
[01aeade] | 713 | retval = oldRetval; |
---|
| 714 | useRetval = oldUseRetval; |
---|
[e56cfdb0] | 715 | doEndScope(); |
---|
[01aeade] | 716 | } // if |
---|
| 717 | return functionDecl; |
---|
| 718 | } |
---|
[6c3744e] | 719 | |
---|
[01aeade] | 720 | TypeDecl *Pass1::mutate( TypeDecl *typeDecl ) { |
---|
| 721 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
| 722 | return Mutator::mutate( typeDecl ); |
---|
| 723 | } |
---|
[6c3744e] | 724 | |
---|
[01aeade] | 725 | Expression *Pass1::mutate( CommaExpr *commaExpr ) { |
---|
| 726 | bool oldUseRetval = useRetval; |
---|
| 727 | useRetval = false; |
---|
| 728 | commaExpr->set_arg1( maybeMutate( commaExpr->get_arg1(), *this ) ); |
---|
| 729 | useRetval = oldUseRetval; |
---|
| 730 | commaExpr->set_arg2( maybeMutate( commaExpr->get_arg2(), *this ) ); |
---|
| 731 | return commaExpr; |
---|
| 732 | } |
---|
[6c3744e] | 733 | |
---|
[01aeade] | 734 | Expression *Pass1::mutate( ConditionalExpr *condExpr ) { |
---|
| 735 | bool oldUseRetval = useRetval; |
---|
| 736 | useRetval = false; |
---|
| 737 | condExpr->set_arg1( maybeMutate( condExpr->get_arg1(), *this ) ); |
---|
| 738 | useRetval = oldUseRetval; |
---|
| 739 | condExpr->set_arg2( maybeMutate( condExpr->get_arg2(), *this ) ); |
---|
| 740 | condExpr->set_arg3( maybeMutate( condExpr->get_arg3(), *this ) ); |
---|
| 741 | return condExpr; |
---|
[6c3744e] | 742 | |
---|
[01aeade] | 743 | } |
---|
[6c3744e] | 744 | |
---|
[5c52b06] | 745 | void Pass1::passArgTypeVars( ApplicationExpr *appExpr, Type *parmType, Type *argBaseType, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars, std::set< std::string > &seenTypes ) { |
---|
[4b8f918] | 746 | Type *polyType = isPolyType( parmType, exprTyVars ); |
---|
| 747 | if ( polyType && ! dynamic_cast< TypeInstType* >( polyType ) ) { |
---|
| 748 | std::string typeName = mangleType( polyType ); |
---|
[adc6781] | 749 | if ( seenTypes.count( typeName ) ) return; |
---|
[5c52b06] | 750 | |
---|
| 751 | arg = appExpr->get_args().insert( arg, new SizeofExpr( argBaseType->clone() ) ); |
---|
| 752 | arg++; |
---|
| 753 | arg = appExpr->get_args().insert( arg, new AlignofExpr( argBaseType->clone() ) ); |
---|
| 754 | arg++; |
---|
[4b8f918] | 755 | if ( dynamic_cast< StructInstType* >( polyType ) ) { |
---|
[5c52b06] | 756 | if ( StructInstType *argBaseStructType = dynamic_cast< StructInstType* >( argBaseType ) ) { |
---|
[89173242] | 757 | // zero-length arrays are forbidden by C, so don't pass offset for empty struct |
---|
| 758 | if ( ! argBaseStructType->get_baseStruct()->get_members().empty() ) { |
---|
[d75038c] | 759 | arg = appExpr->get_args().insert( arg, new OffsetPackExpr( argBaseStructType->clone() ) ); |
---|
[89173242] | 760 | arg++; |
---|
| 761 | } |
---|
[5c52b06] | 762 | } else { |
---|
| 763 | throw SemanticError( "Cannot pass non-struct type for generic struct" ); |
---|
| 764 | } |
---|
| 765 | } |
---|
| 766 | |
---|
[adc6781] | 767 | seenTypes.insert( typeName ); |
---|
[5c52b06] | 768 | } |
---|
| 769 | } |
---|
| 770 | |
---|
| 771 | void Pass1::passTypeVars( ApplicationExpr *appExpr, ReferenceToType *polyRetType, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) { |
---|
[7754cde] | 772 | // pass size/align for type variables |
---|
[01aeade] | 773 | for ( TyVarMap::const_iterator tyParm = exprTyVars.begin(); tyParm != exprTyVars.end(); ++tyParm ) { |
---|
| 774 | ResolvExpr::EqvClass eqvClass; |
---|
| 775 | assert( env ); |
---|
| 776 | if ( tyParm->second == TypeDecl::Any ) { |
---|
| 777 | Type *concrete = env->lookup( tyParm->first ); |
---|
| 778 | if ( concrete ) { |
---|
| 779 | arg = appExpr->get_args().insert( arg, new SizeofExpr( concrete->clone() ) ); |
---|
| 780 | arg++; |
---|
[db0b3ce] | 781 | arg = appExpr->get_args().insert( arg, new AlignofExpr( concrete->clone() ) ); |
---|
| 782 | arg++; |
---|
[01aeade] | 783 | } else { |
---|
[ea5daeb] | 784 | // xxx - should this be an assertion? |
---|
[540de412] | 785 | throw SemanticError( "unbound type variable: " + tyParm->first + " in application ", appExpr ); |
---|
[01aeade] | 786 | } // if |
---|
| 787 | } // if |
---|
| 788 | } // for |
---|
[7754cde] | 789 | |
---|
| 790 | // add size/align for generic types to parameter list |
---|
[906e24d] | 791 | if ( ! appExpr->get_function()->has_result() ) return; |
---|
| 792 | FunctionType *funcType = getFunctionType( appExpr->get_function()->get_result() ); |
---|
[7754cde] | 793 | assert( funcType ); |
---|
[ae63a18] | 794 | |
---|
[7754cde] | 795 | std::list< DeclarationWithType* >::const_iterator fnParm = funcType->get_parameters().begin(); |
---|
| 796 | std::list< Expression* >::const_iterator fnArg = arg; |
---|
[ea5daeb] | 797 | std::set< std::string > seenTypes; ///< names for generic types we've seen |
---|
[7754cde] | 798 | |
---|
[5c52b06] | 799 | // a polymorphic return type may need to be added to the argument list |
---|
| 800 | if ( polyRetType ) { |
---|
| 801 | Type *concRetType = replaceWithConcrete( appExpr, polyRetType ); |
---|
| 802 | passArgTypeVars( appExpr, polyRetType, concRetType, arg, exprTyVars, seenTypes ); |
---|
| 803 | } |
---|
[70a06f6] | 804 | |
---|
[5c52b06] | 805 | // add type information args for presently unseen types in parameter list |
---|
| 806 | for ( ; fnParm != funcType->get_parameters().end() && fnArg != appExpr->get_args().end(); ++fnParm, ++fnArg ) { |
---|
| 807 | VariableExpr *fnArgBase = getBaseVar( *fnArg ); |
---|
[906e24d] | 808 | if ( ! fnArgBase ) continue; // xxx - previously had check for non-empty fnArgBase results |
---|
| 809 | passArgTypeVars( appExpr, (*fnParm)->get_type(), fnArgBase->get_result(), arg, exprTyVars, seenTypes ); |
---|
[7754cde] | 810 | } |
---|
[01aeade] | 811 | } |
---|
[6c3744e] | 812 | |
---|
[01aeade] | 813 | ObjectDecl *Pass1::makeTemporary( Type *type ) { |
---|
[68cd1ce] | 814 | ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, type, 0 ); |
---|
[01aeade] | 815 | stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) ); |
---|
| 816 | return newObj; |
---|
| 817 | } |
---|
[6c3744e] | 818 | |
---|
[01aeade] | 819 | Expression *Pass1::addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ) { |
---|
[cf16f94] | 820 | // ***** Code Removal ***** After introducing a temporary variable for all return expressions, the following code appears superfluous. |
---|
| 821 | // if ( useRetval ) { |
---|
| 822 | // assert( retval ); |
---|
| 823 | // arg = appExpr->get_args().insert( arg, new VariableExpr( retval ) ); |
---|
| 824 | // arg++; |
---|
| 825 | // } else { |
---|
| 826 | |
---|
| 827 | // Create temporary to hold return value of polymorphic function and produce that temporary as a result |
---|
| 828 | // using a comma expression. Possibly change comma expression into statement expression "{}" for multiple |
---|
| 829 | // return values. |
---|
| 830 | ObjectDecl *newObj = makeTemporary( retType->clone() ); |
---|
| 831 | Expression *paramExpr = new VariableExpr( newObj ); |
---|
[5c52b06] | 832 | |
---|
| 833 | // If the type of the temporary is not polymorphic, box temporary by taking its address; |
---|
| 834 | // otherwise the temporary is already boxed and can be used directly. |
---|
[5f6c42c] | 835 | if ( ! isPolyType( newObj->get_type(), scopeTyVars, env ) ) { |
---|
[cf16f94] | 836 | paramExpr = new AddressExpr( paramExpr ); |
---|
[01aeade] | 837 | } // if |
---|
[cf16f94] | 838 | arg = appExpr->get_args().insert( arg, paramExpr ); // add argument to function call |
---|
| 839 | arg++; |
---|
| 840 | // Build a comma expression to call the function and emulate a normal return. |
---|
| 841 | CommaExpr *commaExpr = new CommaExpr( appExpr, new VariableExpr( newObj ) ); |
---|
| 842 | commaExpr->set_env( appExpr->get_env() ); |
---|
| 843 | appExpr->set_env( 0 ); |
---|
| 844 | return commaExpr; |
---|
| 845 | // } // if |
---|
| 846 | // return appExpr; |
---|
[01aeade] | 847 | } |
---|
[6c3744e] | 848 | |
---|
[48ca586] | 849 | void Pass1::replaceParametersWithConcrete( ApplicationExpr *appExpr, std::list< Expression* >& params ) { |
---|
| 850 | for ( std::list< Expression* >::iterator param = params.begin(); param != params.end(); ++param ) { |
---|
| 851 | TypeExpr *paramType = dynamic_cast< TypeExpr* >( *param ); |
---|
| 852 | assert(paramType && "Aggregate parameters should be type expressions"); |
---|
| 853 | paramType->set_type( replaceWithConcrete( appExpr, paramType->get_type(), false ) ); |
---|
| 854 | } |
---|
| 855 | } |
---|
[b4cd03b7] | 856 | |
---|
[48ca586] | 857 | Type *Pass1::replaceWithConcrete( ApplicationExpr *appExpr, Type *type, bool doClone ) { |
---|
| 858 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType * >( type ) ) { |
---|
| 859 | Type *concrete = env->lookup( typeInst->get_name() ); |
---|
| 860 | if ( concrete == 0 ) { |
---|
| 861 | throw SemanticError( "Unbound type variable " + typeInst->get_name() + " in ", appExpr ); |
---|
| 862 | } // if |
---|
| 863 | return concrete; |
---|
| 864 | } else if ( StructInstType *structType = dynamic_cast< StructInstType* >( type ) ) { |
---|
| 865 | if ( doClone ) { |
---|
| 866 | structType = structType->clone(); |
---|
| 867 | } |
---|
| 868 | replaceParametersWithConcrete( appExpr, structType->get_parameters() ); |
---|
| 869 | return structType; |
---|
| 870 | } else if ( UnionInstType *unionType = dynamic_cast< UnionInstType* >( type ) ) { |
---|
| 871 | if ( doClone ) { |
---|
| 872 | unionType = unionType->clone(); |
---|
| 873 | } |
---|
| 874 | replaceParametersWithConcrete( appExpr, unionType->get_parameters() ); |
---|
| 875 | return unionType; |
---|
| 876 | } |
---|
| 877 | return type; |
---|
| 878 | } |
---|
| 879 | |
---|
[3bb195cb] | 880 | Expression *Pass1::addDynRetParam( ApplicationExpr *appExpr, FunctionType *function, ReferenceToType *dynType, std::list< Expression *>::iterator &arg ) { |
---|
[01aeade] | 881 | assert( env ); |
---|
[3bb195cb] | 882 | Type *concrete = replaceWithConcrete( appExpr, dynType ); |
---|
[70a06f6] | 883 | // add out-parameter for return value |
---|
[01aeade] | 884 | return addRetParam( appExpr, function, concrete, arg ); |
---|
| 885 | } |
---|
[6c3744e] | 886 | |
---|
[01aeade] | 887 | Expression *Pass1::applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) { |
---|
| 888 | Expression *ret = appExpr; |
---|
[3bb195cb] | 889 | // if ( ! function->get_returnVals().empty() && isPolyType( function->get_returnVals().front()->get_type(), tyVars ) ) { |
---|
| 890 | if ( isDynRet( function, tyVars ) ) { |
---|
[01aeade] | 891 | ret = addRetParam( appExpr, function, function->get_returnVals().front()->get_type(), arg ); |
---|
| 892 | } // if |
---|
[bdf1954] | 893 | std::string mangleName = mangleAdapterName( function, tyVars ); |
---|
[01aeade] | 894 | std::string adapterName = makeAdapterName( mangleName ); |
---|
[b1a6d6b] | 895 | |
---|
[b4cd03b7] | 896 | // cast adaptee to void (*)(), since it may have any type inside a polymorphic function |
---|
| 897 | Type * adapteeType = new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ); |
---|
| 898 | appExpr->get_args().push_front( new CastExpr( appExpr->get_function(), adapteeType ) ); |
---|
[906e24d] | 899 | appExpr->set_function( new NameExpr( adapterName ) ); // xxx - result is never set on NameExpr |
---|
[ae63a18] | 900 | |
---|
[01aeade] | 901 | return ret; |
---|
| 902 | } |
---|
[6c3744e] | 903 | |
---|
[01aeade] | 904 | void Pass1::boxParam( Type *param, Expression *&arg, const TyVarMap &exprTyVars ) { |
---|
[906e24d] | 905 | assert( arg->has_result() ); |
---|
[1cced28] | 906 | if ( isPolyType( param, exprTyVars ) ) { |
---|
[906e24d] | 907 | if ( isPolyType( arg->get_result() ) ) { |
---|
[9407ed8] | 908 | // if the argument's type is polymorphic, we don't need to box again! |
---|
[01aeade] | 909 | return; |
---|
[906e24d] | 910 | } else if ( arg->get_result()->get_isLvalue() ) { |
---|
[b3ab8f0] | 911 | // VariableExpr and MemberExpr are lvalues; need to check this isn't coming from the second arg of a comma expression though (not an lvalue) |
---|
[fea7ca7] | 912 | // xxx - need to test that this code is still reachable |
---|
[b3ab8f0] | 913 | if ( CommaExpr *commaArg = dynamic_cast< CommaExpr* >( arg ) ) { |
---|
[bc1ab61] | 914 | commaArg->set_arg2( new AddressExpr( commaArg->get_arg2() ) ); |
---|
[b3ab8f0] | 915 | } else { |
---|
| 916 | arg = new AddressExpr( arg ); |
---|
| 917 | } |
---|
[01aeade] | 918 | } else { |
---|
[bd85400] | 919 | // use type computed in unification to declare boxed variables |
---|
| 920 | Type * newType = param->clone(); |
---|
| 921 | if ( env ) env->apply( newType ); |
---|
| 922 | ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, newType, 0 ); |
---|
[f6d7e0f] | 923 | newObj->get_type()->get_qualifiers() = Type::Qualifiers(); // TODO: is this right??? |
---|
[01aeade] | 924 | stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) ); |
---|
| 925 | UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
| 926 | assign->get_args().push_back( new VariableExpr( newObj ) ); |
---|
| 927 | assign->get_args().push_back( arg ); |
---|
| 928 | stmtsToAdd.push_back( new ExprStmt( noLabels, assign ) ); |
---|
| 929 | arg = new AddressExpr( new VariableExpr( newObj ) ); |
---|
| 930 | } // if |
---|
| 931 | } // if |
---|
| 932 | } |
---|
[6c3744e] | 933 | |
---|
[b4cd03b7] | 934 | /// cast parameters to polymorphic functions so that types are replaced with |
---|
| 935 | /// void * if they are type parameters in the formal type. |
---|
| 936 | /// this gets rid of warnings from gcc. |
---|
[01aeade] | 937 | void addCast( Expression *&actual, Type *formal, const TyVarMap &tyVars ) { |
---|
[ea5daeb] | 938 | if ( getFunctionType( formal ) ) { |
---|
| 939 | Type * newType = formal->clone(); |
---|
[b4cd03b7] | 940 | newType = ScrubTyVars::scrub( newType, tyVars ); |
---|
[01aeade] | 941 | actual = new CastExpr( actual, newType ); |
---|
| 942 | } // if |
---|
| 943 | } |
---|
[6c3744e] | 944 | |
---|
[01aeade] | 945 | void Pass1::boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) { |
---|
| 946 | for ( std::list< DeclarationWithType *>::const_iterator param = function->get_parameters().begin(); param != function->get_parameters().end(); ++param, ++arg ) { |
---|
| 947 | assert( arg != appExpr->get_args().end() ); |
---|
| 948 | addCast( *arg, (*param)->get_type(), exprTyVars ); |
---|
| 949 | boxParam( (*param)->get_type(), *arg, exprTyVars ); |
---|
| 950 | } // for |
---|
| 951 | } |
---|
[6c3744e] | 952 | |
---|
[01aeade] | 953 | void Pass1::addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) { |
---|
| 954 | std::list< Expression *>::iterator cur = arg; |
---|
[8c49c0e] | 955 | for ( Type::ForallList::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) { |
---|
[01aeade] | 956 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) { |
---|
| 957 | InferredParams::const_iterator inferParam = appExpr->get_inferParams().find( (*assert)->get_uniqueId() ); |
---|
[698664b3] | 958 | assert( inferParam != appExpr->get_inferParams().end() && "NOTE: Explicit casts of polymorphic functions to compatible monomorphic functions are currently unsupported" ); |
---|
[01aeade] | 959 | Expression *newExpr = inferParam->second.expr->clone(); |
---|
| 960 | addCast( newExpr, (*assert)->get_type(), tyVars ); |
---|
| 961 | boxParam( (*assert)->get_type(), newExpr, tyVars ); |
---|
| 962 | appExpr->get_args().insert( cur, newExpr ); |
---|
| 963 | } // for |
---|
| 964 | } // for |
---|
| 965 | } |
---|
[6c3744e] | 966 | |
---|
[01aeade] | 967 | void makeRetParm( FunctionType *funcType ) { |
---|
| 968 | DeclarationWithType *retParm = funcType->get_returnVals().front(); |
---|
[6c3744e] | 969 | |
---|
[01aeade] | 970 | // make a new parameter that is a pointer to the type of the old return value |
---|
| 971 | retParm->set_type( new PointerType( Type::Qualifiers(), retParm->get_type() ) ); |
---|
| 972 | funcType->get_parameters().push_front( retParm ); |
---|
[6c3744e] | 973 | |
---|
[01aeade] | 974 | // we don't need the return value any more |
---|
| 975 | funcType->get_returnVals().clear(); |
---|
| 976 | } |
---|
[6c3744e] | 977 | |
---|
[01aeade] | 978 | FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars ) { |
---|
| 979 | // actually make the adapter type |
---|
| 980 | FunctionType *adapter = adaptee->clone(); |
---|
[3bb195cb] | 981 | // if ( ! adapter->get_returnVals().empty() && isPolyType( adapter->get_returnVals().front()->get_type(), tyVars ) ) { |
---|
| 982 | if ( isDynRet( adapter, tyVars ) ) { |
---|
[01aeade] | 983 | makeRetParm( adapter ); |
---|
| 984 | } // if |
---|
[68cd1ce] | 985 | adapter->get_parameters().push_front( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ) ); |
---|
[01aeade] | 986 | return adapter; |
---|
| 987 | } |
---|
[6c3744e] | 988 | |
---|
[01aeade] | 989 | Expression *makeAdapterArg( DeclarationWithType *param, DeclarationWithType *arg, DeclarationWithType *realParam, const TyVarMap &tyVars ) { |
---|
| 990 | assert( param ); |
---|
| 991 | assert( arg ); |
---|
[ffad73a] | 992 | if ( isPolyType( realParam->get_type(), tyVars ) ) { |
---|
[30aeb27] | 993 | if ( ! isPolyType( arg->get_type() ) ) { |
---|
[e56cfdb0] | 994 | UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
| 995 | deref->get_args().push_back( new CastExpr( new VariableExpr( param ), new PointerType( Type::Qualifiers(), arg->get_type()->clone() ) ) ); |
---|
[906e24d] | 996 | deref->set_result( arg->get_type()->clone() ); |
---|
[e56cfdb0] | 997 | return deref; |
---|
| 998 | } // if |
---|
[01aeade] | 999 | } // if |
---|
| 1000 | return new VariableExpr( param ); |
---|
| 1001 | } |
---|
[6c3744e] | 1002 | |
---|
[01aeade] | 1003 | 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 ) { |
---|
| 1004 | UniqueName paramNamer( "_p" ); |
---|
| 1005 | for ( ; param != paramEnd; ++param, ++arg, ++realParam ) { |
---|
| 1006 | if ( (*param)->get_name() == "" ) { |
---|
| 1007 | (*param)->set_name( paramNamer.newName() ); |
---|
| 1008 | (*param)->set_linkage( LinkageSpec::C ); |
---|
| 1009 | } // if |
---|
| 1010 | adapteeApp->get_args().push_back( makeAdapterArg( *param, *arg, *realParam, tyVars ) ); |
---|
| 1011 | } // for |
---|
| 1012 | } |
---|
[6c3744e] | 1013 | |
---|
[01aeade] | 1014 | FunctionDecl *Pass1::makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ) { |
---|
| 1015 | FunctionType *adapterType = makeAdapterType( adaptee, tyVars ); |
---|
| 1016 | adapterType = ScrubTyVars::scrub( adapterType, tyVars ); |
---|
| 1017 | DeclarationWithType *adapteeDecl = adapterType->get_parameters().front(); |
---|
| 1018 | adapteeDecl->set_name( "_adaptee" ); |
---|
| 1019 | ApplicationExpr *adapteeApp = new ApplicationExpr( new CastExpr( new VariableExpr( adapteeDecl ), new PointerType( Type::Qualifiers(), realType ) ) ); |
---|
| 1020 | Statement *bodyStmt; |
---|
[ae63a18] | 1021 | |
---|
[8c49c0e] | 1022 | Type::ForallList::iterator tyArg = realType->get_forall().begin(); |
---|
| 1023 | Type::ForallList::iterator tyParam = adapterType->get_forall().begin(); |
---|
| 1024 | Type::ForallList::iterator realTyParam = adaptee->get_forall().begin(); |
---|
[01aeade] | 1025 | for ( ; tyParam != adapterType->get_forall().end(); ++tyArg, ++tyParam, ++realTyParam ) { |
---|
| 1026 | assert( tyArg != realType->get_forall().end() ); |
---|
| 1027 | std::list< DeclarationWithType *>::iterator assertArg = (*tyArg)->get_assertions().begin(); |
---|
| 1028 | std::list< DeclarationWithType *>::iterator assertParam = (*tyParam)->get_assertions().begin(); |
---|
| 1029 | std::list< DeclarationWithType *>::iterator realAssertParam = (*realTyParam)->get_assertions().begin(); |
---|
| 1030 | for ( ; assertParam != (*tyParam)->get_assertions().end(); ++assertArg, ++assertParam, ++realAssertParam ) { |
---|
| 1031 | assert( assertArg != (*tyArg)->get_assertions().end() ); |
---|
| 1032 | adapteeApp->get_args().push_back( makeAdapterArg( *assertParam, *assertArg, *realAssertParam, tyVars ) ); |
---|
| 1033 | } // for |
---|
| 1034 | } // for |
---|
[ae63a18] | 1035 | |
---|
[01aeade] | 1036 | std::list< DeclarationWithType *>::iterator arg = realType->get_parameters().begin(); |
---|
| 1037 | std::list< DeclarationWithType *>::iterator param = adapterType->get_parameters().begin(); |
---|
| 1038 | std::list< DeclarationWithType *>::iterator realParam = adaptee->get_parameters().begin(); |
---|
[cc3528f] | 1039 | param++; // skip adaptee parameter in the adapter type |
---|
[01aeade] | 1040 | if ( realType->get_returnVals().empty() ) { |
---|
[cc3528f] | 1041 | // void return |
---|
[01aeade] | 1042 | addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars ); |
---|
| 1043 | bodyStmt = new ExprStmt( noLabels, adapteeApp ); |
---|
[3bb195cb] | 1044 | // } else if ( isPolyType( adaptee->get_returnVals().front()->get_type(), tyVars ) ) { |
---|
| 1045 | } else if ( isDynType( adaptee->get_returnVals().front()->get_type(), tyVars ) ) { |
---|
[cc3528f] | 1046 | // return type T |
---|
[01aeade] | 1047 | if ( (*param)->get_name() == "" ) { |
---|
| 1048 | (*param)->set_name( "_ret" ); |
---|
| 1049 | (*param)->set_linkage( LinkageSpec::C ); |
---|
| 1050 | } // if |
---|
| 1051 | UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
| 1052 | UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
| 1053 | deref->get_args().push_back( new CastExpr( new VariableExpr( *param++ ), new PointerType( Type::Qualifiers(), realType->get_returnVals().front()->get_type()->clone() ) ) ); |
---|
| 1054 | assign->get_args().push_back( deref ); |
---|
| 1055 | addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars ); |
---|
| 1056 | assign->get_args().push_back( adapteeApp ); |
---|
| 1057 | bodyStmt = new ExprStmt( noLabels, assign ); |
---|
| 1058 | } else { |
---|
| 1059 | // adapter for a function that returns a monomorphic value |
---|
| 1060 | addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars ); |
---|
| 1061 | bodyStmt = new ReturnStmt( noLabels, adapteeApp ); |
---|
| 1062 | } // if |
---|
| 1063 | CompoundStmt *adapterBody = new CompoundStmt( noLabels ); |
---|
| 1064 | adapterBody->get_kids().push_back( bodyStmt ); |
---|
| 1065 | std::string adapterName = makeAdapterName( mangleName ); |
---|
[de62360d] | 1066 | return new FunctionDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, adapterType, adapterBody, false, false ); |
---|
[01aeade] | 1067 | } |
---|
[6c3744e] | 1068 | |
---|
[c29d9ce] | 1069 | void Pass1::passAdapters( ApplicationExpr * appExpr, FunctionType * functionType, const TyVarMap & exprTyVars ) { |
---|
[e497c1d] | 1070 | // collect a list of function types passed as parameters or implicit parameters (assertions) |
---|
[01aeade] | 1071 | std::list< DeclarationWithType *> ¶mList = functionType->get_parameters(); |
---|
| 1072 | std::list< FunctionType *> functions; |
---|
[8c49c0e] | 1073 | for ( Type::ForallList::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) { |
---|
[01aeade] | 1074 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) { |
---|
| 1075 | findFunction( (*assert)->get_type(), functions, exprTyVars, needsAdapter ); |
---|
| 1076 | } // for |
---|
| 1077 | } // for |
---|
| 1078 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
---|
| 1079 | findFunction( (*arg)->get_type(), functions, exprTyVars, needsAdapter ); |
---|
| 1080 | } // for |
---|
[e497c1d] | 1081 | |
---|
[e56cfdb0] | 1082 | // parameter function types for which an appropriate adapter has been generated. we cannot use the types |
---|
| 1083 | // after applying substitutions, since two different parameter types may be unified to the same type |
---|
[01aeade] | 1084 | std::set< std::string > adaptersDone; |
---|
[e497c1d] | 1085 | |
---|
[01aeade] | 1086 | for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) { |
---|
[c29d9ce] | 1087 | FunctionType *originalFunction = (*funType)->clone(); |
---|
[01aeade] | 1088 | FunctionType *realFunction = (*funType)->clone(); |
---|
| 1089 | std::string mangleName = SymTab::Mangler::mangle( realFunction ); |
---|
[e497c1d] | 1090 | |
---|
[e56cfdb0] | 1091 | // only attempt to create an adapter or pass one as a parameter if we haven't already done so for this |
---|
| 1092 | // pre-substitution parameter function type. |
---|
[01aeade] | 1093 | if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) { |
---|
[e497c1d] | 1094 | adaptersDone.insert( adaptersDone.begin(), mangleName ); |
---|
[ae63a18] | 1095 | |
---|
[e56cfdb0] | 1096 | // apply substitution to type variables to figure out what the adapter's type should look like |
---|
[e497c1d] | 1097 | assert( env ); |
---|
| 1098 | env->apply( realFunction ); |
---|
[ae63a18] | 1099 | mangleName = SymTab::Mangler::mangle( realFunction ); |
---|
[bdf1954] | 1100 | mangleName += makePolyMonoSuffix( originalFunction, exprTyVars ); |
---|
[e497c1d] | 1101 | |
---|
[6635c74] | 1102 | typedef ScopedMap< std::string, DeclarationWithType* >::iterator AdapterIter; |
---|
| 1103 | AdapterIter adapter = adapters.find( mangleName ); |
---|
[e56cfdb0] | 1104 | if ( adapter == adapters.end() ) { |
---|
| 1105 | // adapter has not been created yet in the current scope, so define it |
---|
| 1106 | FunctionDecl *newAdapter = makeAdapter( *funType, realFunction, mangleName, exprTyVars ); |
---|
[6635c74] | 1107 | std::pair< AdapterIter, bool > answer = adapters.insert( std::pair< std::string, DeclarationWithType *>( mangleName, newAdapter ) ); |
---|
| 1108 | adapter = answer.first; |
---|
[e56cfdb0] | 1109 | stmtsToAdd.push_back( new DeclStmt( noLabels, newAdapter ) ); |
---|
[c29d9ce] | 1110 | } // if |
---|
[e56cfdb0] | 1111 | assert( adapter != adapters.end() ); |
---|
| 1112 | |
---|
| 1113 | // add the appropriate adapter as a parameter |
---|
| 1114 | appExpr->get_args().push_front( new VariableExpr( adapter->second ) ); |
---|
[01aeade] | 1115 | } // if |
---|
| 1116 | } // for |
---|
[e56cfdb0] | 1117 | } // passAdapters |
---|
[6c3744e] | 1118 | |
---|
[78dd0da] | 1119 | Expression *makeIncrDecrExpr( ApplicationExpr *appExpr, Type *polyType, bool isIncr ) { |
---|
[01aeade] | 1120 | NameExpr *opExpr; |
---|
| 1121 | if ( isIncr ) { |
---|
| 1122 | opExpr = new NameExpr( "?+=?" ); |
---|
| 1123 | } else { |
---|
| 1124 | opExpr = new NameExpr( "?-=?" ); |
---|
[6c3744e] | 1125 | } // if |
---|
[01aeade] | 1126 | UntypedExpr *addAssign = new UntypedExpr( opExpr ); |
---|
| 1127 | if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) { |
---|
| 1128 | addAssign->get_args().push_back( address->get_arg() ); |
---|
| 1129 | } else { |
---|
| 1130 | addAssign->get_args().push_back( appExpr->get_args().front() ); |
---|
[6c3744e] | 1131 | } // if |
---|
[adc6781] | 1132 | addAssign->get_args().push_back( new NameExpr( sizeofName( mangleType( polyType ) ) ) ); |
---|
[906e24d] | 1133 | addAssign->set_result( appExpr->get_result()->clone() ); |
---|
[01aeade] | 1134 | if ( appExpr->get_env() ) { |
---|
| 1135 | addAssign->set_env( appExpr->get_env() ); |
---|
[6c3744e] | 1136 | appExpr->set_env( 0 ); |
---|
| 1137 | } // if |
---|
[01aeade] | 1138 | appExpr->get_args().clear(); |
---|
| 1139 | delete appExpr; |
---|
| 1140 | return addAssign; |
---|
| 1141 | } |
---|
| 1142 | |
---|
| 1143 | Expression *Pass1::handleIntrinsics( ApplicationExpr *appExpr ) { |
---|
| 1144 | if ( VariableExpr *varExpr = dynamic_cast< VariableExpr *>( appExpr->get_function() ) ) { |
---|
| 1145 | if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic ) { |
---|
| 1146 | if ( varExpr->get_var()->get_name() == "?[?]" ) { |
---|
[906e24d] | 1147 | assert( appExpr->has_result() ); |
---|
[01aeade] | 1148 | assert( appExpr->get_args().size() == 2 ); |
---|
[906e24d] | 1149 | Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_result(), scopeTyVars, env ); |
---|
| 1150 | Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_result(), scopeTyVars, env ); |
---|
[ae63a18] | 1151 | assert( ! baseType1 || ! baseType2 ); // the arguments cannot both be polymorphic pointers |
---|
[01aeade] | 1152 | UntypedExpr *ret = 0; |
---|
[ae63a18] | 1153 | if ( baseType1 || baseType2 ) { // one of the arguments is a polymorphic pointer |
---|
[01aeade] | 1154 | ret = new UntypedExpr( new NameExpr( "?+?" ) ); |
---|
| 1155 | } // if |
---|
[ffad73a] | 1156 | if ( baseType1 ) { |
---|
[01aeade] | 1157 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
| 1158 | multiply->get_args().push_back( appExpr->get_args().back() ); |
---|
[adc6781] | 1159 | multiply->get_args().push_back( new SizeofExpr( baseType1->clone() ) ); |
---|
[01aeade] | 1160 | ret->get_args().push_back( appExpr->get_args().front() ); |
---|
| 1161 | ret->get_args().push_back( multiply ); |
---|
[ffad73a] | 1162 | } else if ( baseType2 ) { |
---|
[01aeade] | 1163 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
| 1164 | multiply->get_args().push_back( appExpr->get_args().front() ); |
---|
[adc6781] | 1165 | multiply->get_args().push_back( new SizeofExpr( baseType2->clone() ) ); |
---|
[01aeade] | 1166 | ret->get_args().push_back( multiply ); |
---|
| 1167 | ret->get_args().push_back( appExpr->get_args().back() ); |
---|
| 1168 | } // if |
---|
[ffad73a] | 1169 | if ( baseType1 || baseType2 ) { |
---|
[906e24d] | 1170 | ret->set_result( appExpr->get_result()->clone() ); |
---|
[01aeade] | 1171 | if ( appExpr->get_env() ) { |
---|
| 1172 | ret->set_env( appExpr->get_env() ); |
---|
| 1173 | appExpr->set_env( 0 ); |
---|
| 1174 | } // if |
---|
| 1175 | appExpr->get_args().clear(); |
---|
| 1176 | delete appExpr; |
---|
| 1177 | return ret; |
---|
| 1178 | } // if |
---|
| 1179 | } else if ( varExpr->get_var()->get_name() == "*?" ) { |
---|
[906e24d] | 1180 | assert( appExpr->has_result() ); |
---|
[01aeade] | 1181 | assert( ! appExpr->get_args().empty() ); |
---|
[906e24d] | 1182 | if ( isPolyType( appExpr->get_result(), scopeTyVars, env ) ) { |
---|
[01aeade] | 1183 | Expression *ret = appExpr->get_args().front(); |
---|
[906e24d] | 1184 | delete ret->get_result(); |
---|
| 1185 | ret->set_result( appExpr->get_result()->clone() ); |
---|
[01aeade] | 1186 | if ( appExpr->get_env() ) { |
---|
| 1187 | ret->set_env( appExpr->get_env() ); |
---|
| 1188 | appExpr->set_env( 0 ); |
---|
| 1189 | } // if |
---|
| 1190 | appExpr->get_args().clear(); |
---|
| 1191 | delete appExpr; |
---|
| 1192 | return ret; |
---|
| 1193 | } // if |
---|
| 1194 | } else if ( varExpr->get_var()->get_name() == "?++" || varExpr->get_var()->get_name() == "?--" ) { |
---|
[906e24d] | 1195 | assert( appExpr->has_result() ); |
---|
[01aeade] | 1196 | assert( appExpr->get_args().size() == 1 ); |
---|
[906e24d] | 1197 | if ( Type *baseType = isPolyPtr( appExpr->get_result(), scopeTyVars, env ) ) { |
---|
| 1198 | Type *tempType = appExpr->get_result()->clone(); |
---|
[01aeade] | 1199 | if ( env ) { |
---|
| 1200 | env->apply( tempType ); |
---|
| 1201 | } // if |
---|
| 1202 | ObjectDecl *newObj = makeTemporary( tempType ); |
---|
| 1203 | VariableExpr *tempExpr = new VariableExpr( newObj ); |
---|
| 1204 | UntypedExpr *assignExpr = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
| 1205 | assignExpr->get_args().push_back( tempExpr->clone() ); |
---|
| 1206 | if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) { |
---|
| 1207 | assignExpr->get_args().push_back( address->get_arg()->clone() ); |
---|
| 1208 | } else { |
---|
| 1209 | assignExpr->get_args().push_back( appExpr->get_args().front()->clone() ); |
---|
| 1210 | } // if |
---|
[ffad73a] | 1211 | CommaExpr *firstComma = new CommaExpr( assignExpr, makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "?++" ) ); |
---|
[01aeade] | 1212 | return new CommaExpr( firstComma, tempExpr ); |
---|
| 1213 | } // if |
---|
| 1214 | } else if ( varExpr->get_var()->get_name() == "++?" || varExpr->get_var()->get_name() == "--?" ) { |
---|
[906e24d] | 1215 | assert( appExpr->has_result() ); |
---|
[01aeade] | 1216 | assert( appExpr->get_args().size() == 1 ); |
---|
[906e24d] | 1217 | if ( Type *baseType = isPolyPtr( appExpr->get_result(), scopeTyVars, env ) ) { |
---|
[ffad73a] | 1218 | return makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "++?" ); |
---|
[01aeade] | 1219 | } // if |
---|
| 1220 | } else if ( varExpr->get_var()->get_name() == "?+?" || varExpr->get_var()->get_name() == "?-?" ) { |
---|
[906e24d] | 1221 | assert( appExpr->has_result() ); |
---|
[01aeade] | 1222 | assert( appExpr->get_args().size() == 2 ); |
---|
[906e24d] | 1223 | Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_result(), scopeTyVars, env ); |
---|
| 1224 | Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_result(), scopeTyVars, env ); |
---|
[ffad73a] | 1225 | if ( baseType1 && baseType2 ) { |
---|
[01aeade] | 1226 | UntypedExpr *divide = new UntypedExpr( new NameExpr( "?/?" ) ); |
---|
| 1227 | divide->get_args().push_back( appExpr ); |
---|
[adc6781] | 1228 | divide->get_args().push_back( new SizeofExpr( baseType1->clone() ) ); |
---|
[906e24d] | 1229 | divide->set_result( appExpr->get_result()->clone() ); |
---|
[01aeade] | 1230 | if ( appExpr->get_env() ) { |
---|
| 1231 | divide->set_env( appExpr->get_env() ); |
---|
| 1232 | appExpr->set_env( 0 ); |
---|
| 1233 | } // if |
---|
| 1234 | return divide; |
---|
[ffad73a] | 1235 | } else if ( baseType1 ) { |
---|
[01aeade] | 1236 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
| 1237 | multiply->get_args().push_back( appExpr->get_args().back() ); |
---|
[adc6781] | 1238 | multiply->get_args().push_back( new SizeofExpr( baseType1->clone() ) ); |
---|
[01aeade] | 1239 | appExpr->get_args().back() = multiply; |
---|
[ffad73a] | 1240 | } else if ( baseType2 ) { |
---|
[01aeade] | 1241 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
| 1242 | multiply->get_args().push_back( appExpr->get_args().front() ); |
---|
[adc6781] | 1243 | multiply->get_args().push_back( new SizeofExpr( baseType2->clone() ) ); |
---|
[01aeade] | 1244 | appExpr->get_args().front() = multiply; |
---|
| 1245 | } // if |
---|
| 1246 | } else if ( varExpr->get_var()->get_name() == "?+=?" || varExpr->get_var()->get_name() == "?-=?" ) { |
---|
[906e24d] | 1247 | assert( appExpr->has_result() ); |
---|
[01aeade] | 1248 | assert( appExpr->get_args().size() == 2 ); |
---|
[906e24d] | 1249 | Type *baseType = isPolyPtr( appExpr->get_result(), scopeTyVars, env ); |
---|
[ffad73a] | 1250 | if ( baseType ) { |
---|
[01aeade] | 1251 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
| 1252 | multiply->get_args().push_back( appExpr->get_args().back() ); |
---|
[adc6781] | 1253 | multiply->get_args().push_back( new SizeofExpr( baseType->clone() ) ); |
---|
[01aeade] | 1254 | appExpr->get_args().back() = multiply; |
---|
| 1255 | } // if |
---|
| 1256 | } // if |
---|
| 1257 | return appExpr; |
---|
| 1258 | } // if |
---|
[6c3744e] | 1259 | } // if |
---|
[01aeade] | 1260 | return 0; |
---|
| 1261 | } |
---|
[6c3744e] | 1262 | |
---|
[01aeade] | 1263 | Expression *Pass1::mutate( ApplicationExpr *appExpr ) { |
---|
[e56cfdb0] | 1264 | // std::cerr << "mutate appExpr: "; |
---|
| 1265 | // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) { |
---|
| 1266 | // std::cerr << i->first << " "; |
---|
| 1267 | // } |
---|
| 1268 | // std::cerr << "\n"; |
---|
[01aeade] | 1269 | bool oldUseRetval = useRetval; |
---|
| 1270 | useRetval = false; |
---|
| 1271 | appExpr->get_function()->acceptMutator( *this ); |
---|
| 1272 | mutateAll( appExpr->get_args(), *this ); |
---|
| 1273 | useRetval = oldUseRetval; |
---|
[ae63a18] | 1274 | |
---|
[906e24d] | 1275 | assert( appExpr->get_function()->has_result() ); |
---|
| 1276 | PointerType *pointer = safe_dynamic_cast< PointerType *>( appExpr->get_function()->get_result() ); |
---|
| 1277 | FunctionType *function = safe_dynamic_cast< FunctionType *>( pointer->get_base() ); |
---|
[ae63a18] | 1278 | |
---|
[01aeade] | 1279 | if ( Expression *newExpr = handleIntrinsics( appExpr ) ) { |
---|
| 1280 | return newExpr; |
---|
| 1281 | } // if |
---|
[ae63a18] | 1282 | |
---|
[01aeade] | 1283 | Expression *ret = appExpr; |
---|
[ae63a18] | 1284 | |
---|
[01aeade] | 1285 | std::list< Expression *>::iterator arg = appExpr->get_args().begin(); |
---|
| 1286 | std::list< Expression *>::iterator paramBegin = appExpr->get_args().begin(); |
---|
[ae63a18] | 1287 | |
---|
[bfae637] | 1288 | TyVarMap exprTyVars( (TypeDecl::Kind)-1 ); |
---|
[5c52b06] | 1289 | makeTyVarMap( function, exprTyVars ); |
---|
[3bb195cb] | 1290 | ReferenceToType *dynRetType = isDynRet( function, exprTyVars ); |
---|
[5c52b06] | 1291 | |
---|
[3bb195cb] | 1292 | if ( dynRetType ) { |
---|
| 1293 | ret = addDynRetParam( appExpr, function, dynRetType, arg ); |
---|
[01aeade] | 1294 | } else if ( needsAdapter( function, scopeTyVars ) ) { |
---|
[e56cfdb0] | 1295 | // std::cerr << "needs adapter: "; |
---|
[2e3a379] | 1296 | // printTyVarMap( std::cerr, scopeTyVars ); |
---|
| 1297 | // std::cerr << *env << std::endl; |
---|
[01aeade] | 1298 | // change the application so it calls the adapter rather than the passed function |
---|
| 1299 | ret = applyAdapter( appExpr, function, arg, scopeTyVars ); |
---|
| 1300 | } // if |
---|
| 1301 | arg = appExpr->get_args().begin(); |
---|
[ae63a18] | 1302 | |
---|
[3bb195cb] | 1303 | passTypeVars( appExpr, dynRetType, arg, exprTyVars ); |
---|
[01aeade] | 1304 | addInferredParams( appExpr, function, arg, exprTyVars ); |
---|
[51b7345] | 1305 | |
---|
[01aeade] | 1306 | arg = paramBegin; |
---|
[ae63a18] | 1307 | |
---|
[01aeade] | 1308 | boxParams( appExpr, function, arg, exprTyVars ); |
---|
| 1309 | passAdapters( appExpr, function, exprTyVars ); |
---|
[6c3744e] | 1310 | |
---|
[01aeade] | 1311 | return ret; |
---|
| 1312 | } |
---|
[6c3744e] | 1313 | |
---|
[01aeade] | 1314 | Expression *Pass1::mutate( UntypedExpr *expr ) { |
---|
[906e24d] | 1315 | if ( expr->has_result() && isPolyType( expr->get_result(), scopeTyVars, env ) ) { |
---|
[01aeade] | 1316 | if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) { |
---|
| 1317 | if ( name->get_name() == "*?" ) { |
---|
| 1318 | Expression *ret = expr->get_args().front(); |
---|
| 1319 | expr->get_args().clear(); |
---|
| 1320 | delete expr; |
---|
| 1321 | return ret->acceptMutator( *this ); |
---|
| 1322 | } // if |
---|
| 1323 | } // if |
---|
| 1324 | } // if |
---|
| 1325 | return PolyMutator::mutate( expr ); |
---|
| 1326 | } |
---|
[6c3744e] | 1327 | |
---|
[01aeade] | 1328 | Expression *Pass1::mutate( AddressExpr *addrExpr ) { |
---|
[906e24d] | 1329 | assert( addrExpr->get_arg()->has_result() && ! addrExpr->get_arg()->get_result()->isVoid() ); |
---|
[cf16f94] | 1330 | |
---|
| 1331 | bool needs = false; |
---|
| 1332 | if ( UntypedExpr *expr = dynamic_cast< UntypedExpr *>( addrExpr->get_arg() ) ) { |
---|
[906e24d] | 1333 | if ( expr->has_result() && isPolyType( expr->get_result(), scopeTyVars, env ) ) { |
---|
[cf16f94] | 1334 | if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) { |
---|
| 1335 | if ( name->get_name() == "*?" ) { |
---|
| 1336 | if ( ApplicationExpr * appExpr = dynamic_cast< ApplicationExpr * >( expr->get_args().front() ) ) { |
---|
[906e24d] | 1337 | assert( appExpr->get_function()->has_result() ); |
---|
| 1338 | PointerType *pointer = safe_dynamic_cast< PointerType *>( appExpr->get_function()->get_result() ); |
---|
| 1339 | FunctionType *function = safe_dynamic_cast< FunctionType *>( pointer->get_base() ); |
---|
[cf16f94] | 1340 | needs = needsAdapter( function, scopeTyVars ); |
---|
| 1341 | } // if |
---|
| 1342 | } // if |
---|
| 1343 | } // if |
---|
| 1344 | } // if |
---|
| 1345 | } // if |
---|
[fea7ca7] | 1346 | // isPolyType check needs to happen before mutating addrExpr arg, so pull it forward |
---|
| 1347 | // out of the if condition. |
---|
[906e24d] | 1348 | bool polytype = isPolyType( addrExpr->get_arg()->get_result(), scopeTyVars, env ); |
---|
[01aeade] | 1349 | addrExpr->set_arg( mutateExpression( addrExpr->get_arg() ) ); |
---|
[fea7ca7] | 1350 | if ( polytype || needs ) { |
---|
[01aeade] | 1351 | Expression *ret = addrExpr->get_arg(); |
---|
[906e24d] | 1352 | delete ret->get_result(); |
---|
| 1353 | ret->set_result( addrExpr->get_result()->clone() ); |
---|
[01aeade] | 1354 | addrExpr->set_arg( 0 ); |
---|
| 1355 | delete addrExpr; |
---|
| 1356 | return ret; |
---|
| 1357 | } else { |
---|
| 1358 | return addrExpr; |
---|
| 1359 | } // if |
---|
| 1360 | } |
---|
[6c3744e] | 1361 | |
---|
[b10c9959] | 1362 | /// Wraps a function declaration in a new pointer-to-function variable expression |
---|
| 1363 | VariableExpr *wrapFunctionDecl( DeclarationWithType *functionDecl ) { |
---|
| 1364 | // line below cloned from FixFunction.cc |
---|
[9799ec8] | 1365 | // xxx - functionObj is never added to a list of declarations... |
---|
[b10c9959] | 1366 | ObjectDecl *functionObj = new ObjectDecl( functionDecl->get_name(), functionDecl->get_storageClass(), functionDecl->get_linkage(), 0, |
---|
| 1367 | new PointerType( Type::Qualifiers(), functionDecl->get_type()->clone() ), 0 ); |
---|
| 1368 | functionObj->set_mangleName( functionDecl->get_mangleName() ); |
---|
[9799ec8] | 1369 | functionObj->set_scopeLevel( functionDecl->get_scopeLevel() ); |
---|
[b10c9959] | 1370 | return new VariableExpr( functionObj ); |
---|
| 1371 | } |
---|
[70a06f6] | 1372 | |
---|
[c2ad3c9] | 1373 | /// Finds the operation declaration for a given type in one of the two maps |
---|
| 1374 | DeclarationWithType* findOpForType( Type *formalType, const ScopedMap< std::string, DeclarationWithType* >& ops, ResolvExpr::TypeMap< DeclarationWithType >& scopedOps ) { |
---|
| 1375 | if ( TypeInstType *formalTypeInstType = dynamic_cast< TypeInstType* >( formalType ) ) { |
---|
| 1376 | ScopedMap< std::string, DeclarationWithType *>::const_iterator opIt = ops.find( formalTypeInstType->get_name() ); |
---|
| 1377 | return opIt == ops.end() ? 0 : opIt->second; |
---|
| 1378 | } else { |
---|
| 1379 | return scopedOps.find( formalType ); |
---|
| 1380 | } |
---|
| 1381 | } |
---|
| 1382 | |
---|
| 1383 | /// Adds an assertion parameter to the application expression for the actual assertion declaration valued with the assert op |
---|
| 1384 | void addAssertionFor( ApplicationExpr *appExpr, DeclarationWithType *actualDecl, DeclarationWithType *assertOp ) { |
---|
| 1385 | appExpr->get_inferParams()[ actualDecl->get_uniqueId() ] |
---|
| 1386 | = ParamEntry( assertOp->get_uniqueId(), assertOp->get_type()->clone(), actualDecl->get_type()->clone(), wrapFunctionDecl( assertOp ) ); |
---|
| 1387 | } |
---|
[9799ec8] | 1388 | |
---|
[cf16f94] | 1389 | Statement * Pass1::mutate( ReturnStmt *returnStmt ) { |
---|
| 1390 | if ( retval && returnStmt->get_expr() ) { |
---|
[906e24d] | 1391 | assert( returnStmt->get_expr()->has_result() && ! returnStmt->get_expr()->get_result()->isVoid() ); |
---|
[cf16f94] | 1392 | // ***** Code Removal ***** After introducing a temporary variable for all return expressions, the following code appears superfluous. |
---|
| 1393 | // if ( returnStmt->get_expr()->get_results().front()->get_isLvalue() ) { |
---|
[ae63a18] | 1394 | // by this point, a cast expr on a polymorphic return value is redundant |
---|
[cf16f94] | 1395 | while ( CastExpr *castExpr = dynamic_cast< CastExpr *>( returnStmt->get_expr() ) ) { |
---|
| 1396 | returnStmt->set_expr( castExpr->get_arg() ); |
---|
| 1397 | returnStmt->get_expr()->set_env( castExpr->get_env() ); |
---|
| 1398 | castExpr->set_env( 0 ); |
---|
| 1399 | castExpr->set_arg( 0 ); |
---|
| 1400 | delete castExpr; |
---|
[5f6c42c] | 1401 | } //while |
---|
[1194734] | 1402 | |
---|
| 1403 | // find assignment operator for (polymorphic) return type |
---|
[b10c9959] | 1404 | ApplicationExpr *assignExpr = 0; |
---|
[1194734] | 1405 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( retval->get_type() ) ) { |
---|
[b10c9959] | 1406 | // find assignment operator for type variable |
---|
[63c0dbf] | 1407 | ScopedMap< std::string, DeclarationWithType *>::const_iterator assignIter = assignOps.find( typeInst->get_name() ); |
---|
[1194734] | 1408 | if ( assignIter == assignOps.end() ) { |
---|
| 1409 | throw SemanticError( "Attempt to return dtype or ftype object in ", returnStmt->get_expr() ); |
---|
| 1410 | } // if |
---|
[b10c9959] | 1411 | assignExpr = new ApplicationExpr( new VariableExpr( assignIter->second ) ); |
---|
[1194734] | 1412 | } else if ( ReferenceToType *refType = dynamic_cast< ReferenceToType *>( retval->get_type() ) ) { |
---|
[b10c9959] | 1413 | // find assignment operator for generic type |
---|
[dc12481] | 1414 | DeclarationWithType *functionDecl = scopedAssignOps.find( refType ); |
---|
| 1415 | if ( ! functionDecl ) { |
---|
[1194734] | 1416 | throw SemanticError( "Attempt to return dtype or ftype generic object in ", returnStmt->get_expr() ); |
---|
| 1417 | } |
---|
[b10c9959] | 1418 | |
---|
| 1419 | // wrap it up in an application expression |
---|
| 1420 | assignExpr = new ApplicationExpr( wrapFunctionDecl( functionDecl ) ); |
---|
| 1421 | assignExpr->set_env( env->clone() ); |
---|
| 1422 | |
---|
| 1423 | // find each of its needed secondary assignment operators |
---|
| 1424 | std::list< Expression* > &tyParams = refType->get_parameters(); |
---|
[8c49c0e] | 1425 | Type::ForallList &forallParams = functionDecl->get_type()->get_forall(); |
---|
[b10c9959] | 1426 | std::list< Expression* >::const_iterator tyIt = tyParams.begin(); |
---|
[8c49c0e] | 1427 | Type::ForallList::const_iterator forallIt = forallParams.begin(); |
---|
[b10c9959] | 1428 | for ( ; tyIt != tyParams.end() && forallIt != forallParams.end(); ++tyIt, ++forallIt ) { |
---|
[ae7014e] | 1429 | // Add appropriate mapping to assignment expression environment |
---|
[b10c9959] | 1430 | TypeExpr *formalTypeExpr = dynamic_cast< TypeExpr* >( *tyIt ); |
---|
| 1431 | assert( formalTypeExpr && "type parameters must be type expressions" ); |
---|
| 1432 | Type *formalType = formalTypeExpr->get_type(); |
---|
[ae7014e] | 1433 | assignExpr->get_env()->add( (*forallIt)->get_name(), formalType ); |
---|
| 1434 | |
---|
[c2ad3c9] | 1435 | // skip non-otype parameters (ftype/dtype) |
---|
[ae7014e] | 1436 | if ( (*forallIt)->get_kind() != TypeDecl::Any ) continue; |
---|
| 1437 | |
---|
[c2ad3c9] | 1438 | // find otype operators for formal type |
---|
| 1439 | DeclarationWithType *assertAssign = findOpForType( formalType, assignOps, scopedAssignOps ); |
---|
| 1440 | if ( ! assertAssign ) throw SemanticError( "No assignment operation found for ", formalType ); |
---|
| 1441 | |
---|
| 1442 | DeclarationWithType *assertCtor = findOpForType( formalType, ctorOps, scopedCtorOps ); |
---|
| 1443 | if ( ! assertCtor ) throw SemanticError( "No default constructor found for ", formalType ); |
---|
[b10c9959] | 1444 | |
---|
[c2ad3c9] | 1445 | DeclarationWithType *assertCopy = findOpForType( formalType, copyOps, scopedCopyOps ); |
---|
| 1446 | if ( ! assertCopy ) throw SemanticError( "No copy constructor found for ", formalType ); |
---|
| 1447 | |
---|
| 1448 | DeclarationWithType *assertDtor = findOpForType( formalType, dtorOps, scopedDtorOps ); |
---|
| 1449 | if ( ! assertDtor ) throw SemanticError( "No destructor found for ", formalType ); |
---|
[9799ec8] | 1450 | |
---|
[c2ad3c9] | 1451 | // add inferred parameters for otype operators to assignment expression |
---|
| 1452 | // NOTE: Code here assumes that first four assertions are assign op, ctor, copy ctor, dtor, in that order |
---|
[ae7014e] | 1453 | std::list< DeclarationWithType* > &asserts = (*forallIt)->get_assertions(); |
---|
[c2ad3c9] | 1454 | assert( asserts.size() >= 4 && "Type param needs otype operator assertions" ); |
---|
| 1455 | |
---|
| 1456 | std::list< DeclarationWithType* >::iterator actualIt = asserts.begin(); |
---|
| 1457 | addAssertionFor( assignExpr, *actualIt, assertAssign ); |
---|
| 1458 | ++actualIt; |
---|
| 1459 | addAssertionFor( assignExpr, *actualIt, assertCtor ); |
---|
| 1460 | ++actualIt; |
---|
| 1461 | addAssertionFor( assignExpr, *actualIt, assertCopy ); |
---|
| 1462 | ++actualIt; |
---|
| 1463 | addAssertionFor( assignExpr, *actualIt, assertDtor ); |
---|
[9799ec8] | 1464 | |
---|
[b10c9959] | 1465 | } |
---|
[1194734] | 1466 | } |
---|
[b10c9959] | 1467 | assert( assignExpr ); |
---|
[1194734] | 1468 | |
---|
| 1469 | // replace return statement with appropriate assignment to out parameter |
---|
[cf16f94] | 1470 | Expression *retParm = new NameExpr( retval->get_name() ); |
---|
[906e24d] | 1471 | retParm->set_result( new PointerType( Type::Qualifiers(), retval->get_type()->clone() ) ); |
---|
[cf16f94] | 1472 | assignExpr->get_args().push_back( retParm ); |
---|
| 1473 | assignExpr->get_args().push_back( returnStmt->get_expr() ); |
---|
| 1474 | stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( assignExpr ) ) ); |
---|
| 1475 | // } else { |
---|
| 1476 | // useRetval = true; |
---|
| 1477 | // stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( returnStmt->get_expr() ) ) ); |
---|
| 1478 | // useRetval = false; |
---|
| 1479 | // } // if |
---|
| 1480 | returnStmt->set_expr( 0 ); |
---|
[01aeade] | 1481 | } else { |
---|
[cf16f94] | 1482 | returnStmt->set_expr( mutateExpression( returnStmt->get_expr() ) ); |
---|
[01aeade] | 1483 | } // if |
---|
[cf16f94] | 1484 | return returnStmt; |
---|
[01aeade] | 1485 | } |
---|
[6c3744e] | 1486 | |
---|
[01aeade] | 1487 | Type * Pass1::mutate( PointerType *pointerType ) { |
---|
[6f49cdf] | 1488 | scopeTyVars.beginScope(); |
---|
[01aeade] | 1489 | makeTyVarMap( pointerType, scopeTyVars ); |
---|
[ae63a18] | 1490 | |
---|
[01aeade] | 1491 | Type *ret = Mutator::mutate( pointerType ); |
---|
[ae63a18] | 1492 | |
---|
[6f49cdf] | 1493 | scopeTyVars.endScope(); |
---|
[01aeade] | 1494 | return ret; |
---|
| 1495 | } |
---|
[6c3744e] | 1496 | |
---|
[01aeade] | 1497 | Type * Pass1::mutate( FunctionType *functionType ) { |
---|
[6f49cdf] | 1498 | scopeTyVars.beginScope(); |
---|
[01aeade] | 1499 | makeTyVarMap( functionType, scopeTyVars ); |
---|
[ae63a18] | 1500 | |
---|
[01aeade] | 1501 | Type *ret = Mutator::mutate( functionType ); |
---|
[ae63a18] | 1502 | |
---|
[6f49cdf] | 1503 | scopeTyVars.endScope(); |
---|
[01aeade] | 1504 | return ret; |
---|
| 1505 | } |
---|
[51b7345] | 1506 | |
---|
[01aeade] | 1507 | void Pass1::doBeginScope() { |
---|
[6635c74] | 1508 | adapters.beginScope(); |
---|
[1194734] | 1509 | scopedAssignOps.beginScope(); |
---|
[c2ad3c9] | 1510 | scopedCtorOps.beginScope(); |
---|
| 1511 | scopedCopyOps.beginScope(); |
---|
| 1512 | scopedDtorOps.beginScope(); |
---|
[01aeade] | 1513 | } |
---|
[b1a6d6b] | 1514 | |
---|
[01aeade] | 1515 | void Pass1::doEndScope() { |
---|
[6635c74] | 1516 | adapters.endScope(); |
---|
[1194734] | 1517 | scopedAssignOps.endScope(); |
---|
[c2ad3c9] | 1518 | scopedCtorOps.endScope(); |
---|
| 1519 | scopedCopyOps.endScope(); |
---|
| 1520 | scopedDtorOps.endScope(); |
---|
[01aeade] | 1521 | } |
---|
[51b7345] | 1522 | |
---|
| 1523 | ////////////////////////////////////////// Pass2 //////////////////////////////////////////////////// |
---|
| 1524 | |
---|
[01aeade] | 1525 | void Pass2::addAdapters( FunctionType *functionType ) { |
---|
| 1526 | std::list< DeclarationWithType *> ¶mList = functionType->get_parameters(); |
---|
| 1527 | std::list< FunctionType *> functions; |
---|
| 1528 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
---|
| 1529 | Type *orig = (*arg)->get_type(); |
---|
| 1530 | findAndReplaceFunction( orig, functions, scopeTyVars, needsAdapter ); |
---|
| 1531 | (*arg)->set_type( orig ); |
---|
| 1532 | } |
---|
| 1533 | std::set< std::string > adaptersDone; |
---|
| 1534 | for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) { |
---|
[bdf1954] | 1535 | std::string mangleName = mangleAdapterName( *funType, scopeTyVars ); |
---|
[01aeade] | 1536 | if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) { |
---|
| 1537 | std::string adapterName = makeAdapterName( mangleName ); |
---|
[68cd1ce] | 1538 | paramList.push_front( new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) ); |
---|
[01aeade] | 1539 | adaptersDone.insert( adaptersDone.begin(), mangleName ); |
---|
| 1540 | } |
---|
| 1541 | } |
---|
[5f6c42c] | 1542 | // deleteAll( functions ); |
---|
[01aeade] | 1543 | } |
---|
[6c3744e] | 1544 | |
---|
[01aeade] | 1545 | template< typename DeclClass > |
---|
| 1546 | DeclClass * Pass2::handleDecl( DeclClass *decl, Type *type ) { |
---|
| 1547 | DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) ); |
---|
[6c3744e] | 1548 | |
---|
[01aeade] | 1549 | return ret; |
---|
| 1550 | } |
---|
[6c3744e] | 1551 | |
---|
[01aeade] | 1552 | DeclarationWithType * Pass2::mutate( FunctionDecl *functionDecl ) { |
---|
| 1553 | return handleDecl( functionDecl, functionDecl->get_functionType() ); |
---|
| 1554 | } |
---|
[6c3744e] | 1555 | |
---|
[01aeade] | 1556 | ObjectDecl * Pass2::mutate( ObjectDecl *objectDecl ) { |
---|
| 1557 | return handleDecl( objectDecl, objectDecl->get_type() ); |
---|
| 1558 | } |
---|
[6c3744e] | 1559 | |
---|
[01aeade] | 1560 | TypeDecl * Pass2::mutate( TypeDecl *typeDecl ) { |
---|
| 1561 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
| 1562 | if ( typeDecl->get_base() ) { |
---|
| 1563 | return handleDecl( typeDecl, typeDecl->get_base() ); |
---|
| 1564 | } else { |
---|
| 1565 | return Mutator::mutate( typeDecl ); |
---|
| 1566 | } |
---|
| 1567 | } |
---|
[6c3744e] | 1568 | |
---|
[01aeade] | 1569 | TypedefDecl * Pass2::mutate( TypedefDecl *typedefDecl ) { |
---|
| 1570 | return handleDecl( typedefDecl, typedefDecl->get_base() ); |
---|
| 1571 | } |
---|
[6c3744e] | 1572 | |
---|
[01aeade] | 1573 | Type * Pass2::mutate( PointerType *pointerType ) { |
---|
[6f49cdf] | 1574 | scopeTyVars.beginScope(); |
---|
[01aeade] | 1575 | makeTyVarMap( pointerType, scopeTyVars ); |
---|
[ae63a18] | 1576 | |
---|
[01aeade] | 1577 | Type *ret = Mutator::mutate( pointerType ); |
---|
[ae63a18] | 1578 | |
---|
[6f49cdf] | 1579 | scopeTyVars.endScope(); |
---|
[01aeade] | 1580 | return ret; |
---|
| 1581 | } |
---|
[6c3744e] | 1582 | |
---|
[01aeade] | 1583 | Type *Pass2::mutate( FunctionType *funcType ) { |
---|
[6f49cdf] | 1584 | scopeTyVars.beginScope(); |
---|
[01aeade] | 1585 | makeTyVarMap( funcType, scopeTyVars ); |
---|
[7754cde] | 1586 | |
---|
| 1587 | // move polymorphic return type to parameter list |
---|
[3bb195cb] | 1588 | if ( isDynRet( funcType ) ) { |
---|
[01aeade] | 1589 | DeclarationWithType *ret = funcType->get_returnVals().front(); |
---|
| 1590 | ret->set_type( new PointerType( Type::Qualifiers(), ret->get_type() ) ); |
---|
| 1591 | funcType->get_parameters().push_front( ret ); |
---|
| 1592 | funcType->get_returnVals().pop_front(); |
---|
| 1593 | } |
---|
[7754cde] | 1594 | |
---|
| 1595 | // add size/align and assertions for type parameters to parameter list |
---|
[01aeade] | 1596 | std::list< DeclarationWithType *>::iterator last = funcType->get_parameters().begin(); |
---|
| 1597 | std::list< DeclarationWithType *> inferredParams; |
---|
[78dd0da] | 1598 | ObjectDecl newObj( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), 0 ); |
---|
[05d47278] | 1599 | ObjectDecl newPtr( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, |
---|
| 1600 | new PointerType( Type::Qualifiers(), new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ) ), 0 ); |
---|
[8c49c0e] | 1601 | for ( Type::ForallList::const_iterator tyParm = funcType->get_forall().begin(); tyParm != funcType->get_forall().end(); ++tyParm ) { |
---|
[db0b3ce] | 1602 | ObjectDecl *sizeParm, *alignParm; |
---|
| 1603 | // add all size and alignment parameters to parameter list |
---|
[01aeade] | 1604 | if ( (*tyParm)->get_kind() == TypeDecl::Any ) { |
---|
[78dd0da] | 1605 | TypeInstType parmType( Type::Qualifiers(), (*tyParm)->get_name(), *tyParm ); |
---|
[adc6781] | 1606 | std::string parmName = mangleType( &parmType ); |
---|
[ae63a18] | 1607 | |
---|
[78dd0da] | 1608 | sizeParm = newObj.clone(); |
---|
[adc6781] | 1609 | sizeParm->set_name( sizeofName( parmName ) ); |
---|
[db0b3ce] | 1610 | last = funcType->get_parameters().insert( last, sizeParm ); |
---|
| 1611 | ++last; |
---|
[78dd0da] | 1612 | |
---|
| 1613 | alignParm = newObj.clone(); |
---|
[adc6781] | 1614 | alignParm->set_name( alignofName( parmName ) ); |
---|
[db0b3ce] | 1615 | last = funcType->get_parameters().insert( last, alignParm ); |
---|
[01aeade] | 1616 | ++last; |
---|
| 1617 | } |
---|
[e56cfdb0] | 1618 | // move all assertions into parameter list |
---|
[01aeade] | 1619 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyParm)->get_assertions().begin(); assert != (*tyParm)->get_assertions().end(); ++assert ) { |
---|
[f8b961b] | 1620 | // *assert = (*assert)->acceptMutator( *this ); |
---|
[01aeade] | 1621 | inferredParams.push_back( *assert ); |
---|
| 1622 | } |
---|
| 1623 | (*tyParm)->get_assertions().clear(); |
---|
| 1624 | } |
---|
[7754cde] | 1625 | |
---|
[5c52b06] | 1626 | // add size/align for generic parameter types to parameter list |
---|
[b18b0b5] | 1627 | std::set< std::string > seenTypes; // sizeofName for generic types we've seen |
---|
[7754cde] | 1628 | for ( std::list< DeclarationWithType* >::const_iterator fnParm = last; fnParm != funcType->get_parameters().end(); ++fnParm ) { |
---|
[4b8f918] | 1629 | Type *polyType = isPolyType( (*fnParm)->get_type(), scopeTyVars ); |
---|
| 1630 | if ( polyType && ! dynamic_cast< TypeInstType* >( polyType ) ) { |
---|
| 1631 | std::string typeName = mangleType( polyType ); |
---|
[adc6781] | 1632 | if ( seenTypes.count( typeName ) ) continue; |
---|
[ae63a18] | 1633 | |
---|
[05d47278] | 1634 | ObjectDecl *sizeParm, *alignParm, *offsetParm; |
---|
[7754cde] | 1635 | sizeParm = newObj.clone(); |
---|
[adc6781] | 1636 | sizeParm->set_name( sizeofName( typeName ) ); |
---|
[7754cde] | 1637 | last = funcType->get_parameters().insert( last, sizeParm ); |
---|
| 1638 | ++last; |
---|
| 1639 | |
---|
| 1640 | alignParm = newObj.clone(); |
---|
[adc6781] | 1641 | alignParm->set_name( alignofName( typeName ) ); |
---|
[7754cde] | 1642 | last = funcType->get_parameters().insert( last, alignParm ); |
---|
| 1643 | ++last; |
---|
| 1644 | |
---|
[4b8f918] | 1645 | if ( StructInstType *polyBaseStruct = dynamic_cast< StructInstType* >( polyType ) ) { |
---|
[89173242] | 1646 | // NOTE zero-length arrays are illegal in C, so empty structs have no offset array |
---|
| 1647 | if ( ! polyBaseStruct->get_baseStruct()->get_members().empty() ) { |
---|
| 1648 | offsetParm = newPtr.clone(); |
---|
[adc6781] | 1649 | offsetParm->set_name( offsetofName( typeName ) ); |
---|
[89173242] | 1650 | last = funcType->get_parameters().insert( last, offsetParm ); |
---|
| 1651 | ++last; |
---|
| 1652 | } |
---|
[05d47278] | 1653 | } |
---|
| 1654 | |
---|
[adc6781] | 1655 | seenTypes.insert( typeName ); |
---|
[7754cde] | 1656 | } |
---|
| 1657 | } |
---|
| 1658 | |
---|
| 1659 | // splice assertion parameters into parameter list |
---|
[01aeade] | 1660 | funcType->get_parameters().splice( last, inferredParams ); |
---|
| 1661 | addAdapters( funcType ); |
---|
| 1662 | mutateAll( funcType->get_returnVals(), *this ); |
---|
| 1663 | mutateAll( funcType->get_parameters(), *this ); |
---|
[ae63a18] | 1664 | |
---|
[6f49cdf] | 1665 | scopeTyVars.endScope(); |
---|
[01aeade] | 1666 | return funcType; |
---|
| 1667 | } |
---|
[51b7345] | 1668 | |
---|
[4b8f918] | 1669 | ////////////////////////////////////////// PolyGenericCalculator //////////////////////////////////////////////////// |
---|
[51b7345] | 1670 | |
---|
[aa19ccf] | 1671 | void PolyGenericCalculator::beginTypeScope( Type *ty ) { |
---|
| 1672 | scopeTyVars.beginScope(); |
---|
| 1673 | makeTyVarMap( ty, scopeTyVars ); |
---|
| 1674 | } |
---|
| 1675 | |
---|
| 1676 | void PolyGenericCalculator::endTypeScope() { |
---|
| 1677 | scopeTyVars.endScope(); |
---|
| 1678 | } |
---|
[51b7345] | 1679 | |
---|
[01aeade] | 1680 | template< typename DeclClass > |
---|
[8a34677] | 1681 | DeclClass * PolyGenericCalculator::handleDecl( DeclClass *decl, Type *type ) { |
---|
[aa19ccf] | 1682 | beginTypeScope( type ); |
---|
[1ba88a0] | 1683 | // knownLayouts.beginScope(); |
---|
| 1684 | // knownOffsets.beginScope(); |
---|
[ae63a18] | 1685 | |
---|
[1ba88a0] | 1686 | DeclClass *ret = static_cast< DeclClass *>( Parent::mutate( decl ) ); |
---|
[6c3744e] | 1687 | |
---|
[1ba88a0] | 1688 | // knownOffsets.endScope(); |
---|
| 1689 | // knownLayouts.endScope(); |
---|
[aa19ccf] | 1690 | endTypeScope(); |
---|
[01aeade] | 1691 | return ret; |
---|
| 1692 | } |
---|
[6c3744e] | 1693 | |
---|
[8a34677] | 1694 | ObjectDecl * PolyGenericCalculator::mutate( ObjectDecl *objectDecl ) { |
---|
[01aeade] | 1695 | return handleDecl( objectDecl, objectDecl->get_type() ); |
---|
| 1696 | } |
---|
[6c3744e] | 1697 | |
---|
[8a34677] | 1698 | DeclarationWithType * PolyGenericCalculator::mutate( FunctionDecl *functionDecl ) { |
---|
[1ba88a0] | 1699 | knownLayouts.beginScope(); |
---|
| 1700 | knownOffsets.beginScope(); |
---|
| 1701 | |
---|
| 1702 | DeclarationWithType * decl = handleDecl( functionDecl, functionDecl->get_functionType() ); |
---|
| 1703 | knownOffsets.endScope(); |
---|
| 1704 | knownLayouts.endScope(); |
---|
| 1705 | return decl; |
---|
[01aeade] | 1706 | } |
---|
[6c3744e] | 1707 | |
---|
[8a34677] | 1708 | TypedefDecl * PolyGenericCalculator::mutate( TypedefDecl *typedefDecl ) { |
---|
[01aeade] | 1709 | return handleDecl( typedefDecl, typedefDecl->get_base() ); |
---|
| 1710 | } |
---|
[6c3744e] | 1711 | |
---|
[8a34677] | 1712 | TypeDecl * PolyGenericCalculator::mutate( TypeDecl *typeDecl ) { |
---|
[01aeade] | 1713 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
[1ba88a0] | 1714 | return Parent::mutate( typeDecl ); |
---|
[01aeade] | 1715 | } |
---|
[51b7345] | 1716 | |
---|
[8a34677] | 1717 | Type * PolyGenericCalculator::mutate( PointerType *pointerType ) { |
---|
[aa19ccf] | 1718 | beginTypeScope( pointerType ); |
---|
[ae63a18] | 1719 | |
---|
[1ba88a0] | 1720 | Type *ret = Parent::mutate( pointerType ); |
---|
[ae63a18] | 1721 | |
---|
[aa19ccf] | 1722 | endTypeScope(); |
---|
[01aeade] | 1723 | return ret; |
---|
| 1724 | } |
---|
[6c3744e] | 1725 | |
---|
[8a34677] | 1726 | Type * PolyGenericCalculator::mutate( FunctionType *funcType ) { |
---|
[aa19ccf] | 1727 | beginTypeScope( funcType ); |
---|
[ae63a18] | 1728 | |
---|
[8a34677] | 1729 | // make sure that any type information passed into the function is accounted for |
---|
| 1730 | for ( std::list< DeclarationWithType* >::const_iterator fnParm = funcType->get_parameters().begin(); fnParm != funcType->get_parameters().end(); ++fnParm ) { |
---|
| 1731 | // condition here duplicates that in Pass2::mutate( FunctionType* ) |
---|
[4b8f918] | 1732 | Type *polyType = isPolyType( (*fnParm)->get_type(), scopeTyVars ); |
---|
| 1733 | if ( polyType && ! dynamic_cast< TypeInstType* >( polyType ) ) { |
---|
| 1734 | knownLayouts.insert( mangleType( polyType ) ); |
---|
[8a34677] | 1735 | } |
---|
| 1736 | } |
---|
[70a06f6] | 1737 | |
---|
[1ba88a0] | 1738 | Type *ret = Parent::mutate( funcType ); |
---|
[ae63a18] | 1739 | |
---|
[aa19ccf] | 1740 | endTypeScope(); |
---|
[01aeade] | 1741 | return ret; |
---|
[6c3744e] | 1742 | } |
---|
[51b7345] | 1743 | |
---|
[8a34677] | 1744 | Statement *PolyGenericCalculator::mutate( DeclStmt *declStmt ) { |
---|
[01aeade] | 1745 | if ( ObjectDecl *objectDecl = dynamic_cast< ObjectDecl *>( declStmt->get_decl() ) ) { |
---|
[8a34677] | 1746 | if ( findGeneric( objectDecl->get_type() ) ) { |
---|
[e01559c] | 1747 | // change initialization of a polymorphic value object |
---|
| 1748 | // to allocate storage with alloca |
---|
[ffad73a] | 1749 | Type *declType = objectDecl->get_type(); |
---|
[01aeade] | 1750 | UntypedExpr *alloc = new UntypedExpr( new NameExpr( "__builtin_alloca" ) ); |
---|
[adc6781] | 1751 | alloc->get_args().push_back( new NameExpr( sizeofName( mangleType( declType ) ) ) ); |
---|
[e01559c] | 1752 | |
---|
| 1753 | delete objectDecl->get_init(); |
---|
| 1754 | |
---|
| 1755 | std::list<Expression*> designators; |
---|
[974906e2] | 1756 | objectDecl->set_init( new SingleInit( alloc, designators, false ) ); // not constructed |
---|
[01aeade] | 1757 | } |
---|
| 1758 | } |
---|
[1ba88a0] | 1759 | return Parent::mutate( declStmt ); |
---|
[01aeade] | 1760 | } |
---|
[05d47278] | 1761 | |
---|
[2a4b088] | 1762 | /// Finds the member in the base list that matches the given declaration; returns its index, or -1 if not present |
---|
| 1763 | long findMember( DeclarationWithType *memberDecl, std::list< Declaration* > &baseDecls ) { |
---|
| 1764 | long i = 0; |
---|
| 1765 | for(std::list< Declaration* >::const_iterator decl = baseDecls.begin(); decl != baseDecls.end(); ++decl, ++i ) { |
---|
| 1766 | if ( memberDecl->get_name() != (*decl)->get_name() ) continue; |
---|
| 1767 | |
---|
| 1768 | if ( DeclarationWithType *declWithType = dynamic_cast< DeclarationWithType* >( *decl ) ) { |
---|
[bed4d37c] | 1769 | if ( memberDecl->get_mangleName().empty() || declWithType->get_mangleName().empty() |
---|
| 1770 | || memberDecl->get_mangleName() == declWithType->get_mangleName() ) return i; |
---|
[2a4b088] | 1771 | else continue; |
---|
| 1772 | } else return i; |
---|
| 1773 | } |
---|
| 1774 | return -1; |
---|
| 1775 | } |
---|
| 1776 | |
---|
| 1777 | /// Returns an index expression into the offset array for a type |
---|
| 1778 | Expression *makeOffsetIndex( Type *objectType, long i ) { |
---|
| 1779 | std::stringstream offset_namer; |
---|
| 1780 | offset_namer << i; |
---|
| 1781 | ConstantExpr *fieldIndex = new ConstantExpr( Constant( new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), offset_namer.str() ) ); |
---|
| 1782 | UntypedExpr *fieldOffset = new UntypedExpr( new NameExpr( "?[?]" ) ); |
---|
[adc6781] | 1783 | fieldOffset->get_args().push_back( new NameExpr( offsetofName( mangleType( objectType ) ) ) ); |
---|
[2a4b088] | 1784 | fieldOffset->get_args().push_back( fieldIndex ); |
---|
| 1785 | return fieldOffset; |
---|
| 1786 | } |
---|
| 1787 | |
---|
| 1788 | /// Returns an expression dereferenced n times |
---|
| 1789 | Expression *makeDerefdVar( Expression *derefdVar, long n ) { |
---|
| 1790 | for ( int i = 1; i < n; ++i ) { |
---|
| 1791 | UntypedExpr *derefExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
| 1792 | derefExpr->get_args().push_back( derefdVar ); |
---|
[10a7775] | 1793 | // xxx - should set results on derefExpr |
---|
[2a4b088] | 1794 | derefdVar = derefExpr; |
---|
| 1795 | } |
---|
| 1796 | return derefdVar; |
---|
| 1797 | } |
---|
[d63eeb0] | 1798 | |
---|
[8a34677] | 1799 | Expression *PolyGenericCalculator::mutate( MemberExpr *memberExpr ) { |
---|
[05d47278] | 1800 | // mutate, exiting early if no longer MemberExpr |
---|
[1ba88a0] | 1801 | Expression *expr = Parent::mutate( memberExpr ); |
---|
[05d47278] | 1802 | memberExpr = dynamic_cast< MemberExpr* >( expr ); |
---|
| 1803 | if ( ! memberExpr ) return expr; |
---|
| 1804 | |
---|
| 1805 | // get declaration for base struct, exiting early if not found |
---|
[8488c715] | 1806 | int varDepth; |
---|
| 1807 | VariableExpr *varExpr = getBaseVar( memberExpr->get_aggregate(), &varDepth ); |
---|
[05d47278] | 1808 | if ( ! varExpr ) return memberExpr; |
---|
| 1809 | ObjectDecl *objectDecl = dynamic_cast< ObjectDecl* >( varExpr->get_var() ); |
---|
| 1810 | if ( ! objectDecl ) return memberExpr; |
---|
| 1811 | |
---|
| 1812 | // only mutate member expressions for polymorphic types |
---|
[8488c715] | 1813 | int tyDepth; |
---|
| 1814 | Type *objectType = hasPolyBase( objectDecl->get_type(), scopeTyVars, &tyDepth ); |
---|
[05d47278] | 1815 | if ( ! objectType ) return memberExpr; |
---|
[8a34677] | 1816 | findGeneric( objectType ); // ensure layout for this type is available |
---|
[05d47278] | 1817 | |
---|
[ea5daeb] | 1818 | // replace member expression with dynamically-computed layout expression |
---|
[4318107] | 1819 | Expression *newMemberExpr = 0; |
---|
[05d47278] | 1820 | if ( StructInstType *structType = dynamic_cast< StructInstType* >( objectType ) ) { |
---|
[2a4b088] | 1821 | // look up offset index |
---|
| 1822 | long i = findMember( memberExpr->get_member(), structType->get_baseStruct()->get_members() ); |
---|
| 1823 | if ( i == -1 ) return memberExpr; |
---|
[05d47278] | 1824 | |
---|
[2a4b088] | 1825 | // replace member expression with pointer to base plus offset |
---|
| 1826 | UntypedExpr *fieldLoc = new UntypedExpr( new NameExpr( "?+?" ) ); |
---|
| 1827 | fieldLoc->get_args().push_back( makeDerefdVar( varExpr->clone(), varDepth ) ); |
---|
| 1828 | fieldLoc->get_args().push_back( makeOffsetIndex( objectType, i ) ); |
---|
[4318107] | 1829 | newMemberExpr = fieldLoc; |
---|
[98735ef] | 1830 | } else if ( dynamic_cast< UnionInstType* >( objectType ) ) { |
---|
[2a4b088] | 1831 | // union members are all at offset zero, so build appropriately-dereferenced variable |
---|
[4318107] | 1832 | newMemberExpr = makeDerefdVar( varExpr->clone(), varDepth ); |
---|
[2a4b088] | 1833 | } else return memberExpr; |
---|
[4318107] | 1834 | assert( newMemberExpr ); |
---|
| 1835 | |
---|
[4067aa8] | 1836 | Type *memberType = memberExpr->get_member()->get_type(); |
---|
| 1837 | if ( ! isPolyType( memberType, scopeTyVars ) ) { |
---|
| 1838 | // Not all members of a polymorphic type are themselves of polymorphic type; in this case the member expression should be wrapped and dereferenced to form an lvalue |
---|
| 1839 | CastExpr *ptrCastExpr = new CastExpr( newMemberExpr, new PointerType( Type::Qualifiers(), memberType->clone() ) ); |
---|
[4318107] | 1840 | UntypedExpr *derefExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
| 1841 | derefExpr->get_args().push_back( ptrCastExpr ); |
---|
| 1842 | newMemberExpr = derefExpr; |
---|
| 1843 | } |
---|
| 1844 | |
---|
| 1845 | delete memberExpr; |
---|
| 1846 | return newMemberExpr; |
---|
[2a4b088] | 1847 | } |
---|
[05d47278] | 1848 | |
---|
[8a34677] | 1849 | ObjectDecl *PolyGenericCalculator::makeVar( const std::string &name, Type *type, Initializer *init ) { |
---|
| 1850 | ObjectDecl *newObj = new ObjectDecl( name, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, type, init ); |
---|
| 1851 | stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) ); |
---|
| 1852 | return newObj; |
---|
| 1853 | } |
---|
| 1854 | |
---|
| 1855 | void PolyGenericCalculator::addOtypeParamsToLayoutCall( UntypedExpr *layoutCall, const std::list< Type* > &otypeParams ) { |
---|
| 1856 | for ( std::list< Type* >::const_iterator param = otypeParams.begin(); param != otypeParams.end(); ++param ) { |
---|
| 1857 | if ( findGeneric( *param ) ) { |
---|
| 1858 | // push size/align vars for a generic parameter back |
---|
[adc6781] | 1859 | std::string paramName = mangleType( *param ); |
---|
| 1860 | layoutCall->get_args().push_back( new NameExpr( sizeofName( paramName ) ) ); |
---|
| 1861 | layoutCall->get_args().push_back( new NameExpr( alignofName( paramName ) ) ); |
---|
[8a34677] | 1862 | } else { |
---|
| 1863 | layoutCall->get_args().push_back( new SizeofExpr( (*param)->clone() ) ); |
---|
| 1864 | layoutCall->get_args().push_back( new AlignofExpr( (*param)->clone() ) ); |
---|
| 1865 | } |
---|
| 1866 | } |
---|
| 1867 | } |
---|
| 1868 | |
---|
| 1869 | /// returns true if any of the otype parameters have a dynamic layout and puts all otype parameters in the output list |
---|
| 1870 | bool findGenericParams( std::list< TypeDecl* > &baseParams, std::list< Expression* > &typeParams, std::list< Type* > &out ) { |
---|
| 1871 | bool hasDynamicLayout = false; |
---|
| 1872 | |
---|
| 1873 | std::list< TypeDecl* >::const_iterator baseParam = baseParams.begin(); |
---|
| 1874 | std::list< Expression* >::const_iterator typeParam = typeParams.begin(); |
---|
| 1875 | for ( ; baseParam != baseParams.end() && typeParam != typeParams.end(); ++baseParam, ++typeParam ) { |
---|
| 1876 | // skip non-otype parameters |
---|
| 1877 | if ( (*baseParam)->get_kind() != TypeDecl::Any ) continue; |
---|
| 1878 | TypeExpr *typeExpr = dynamic_cast< TypeExpr* >( *typeParam ); |
---|
| 1879 | assert( typeExpr && "all otype parameters should be type expressions" ); |
---|
| 1880 | |
---|
| 1881 | Type *type = typeExpr->get_type(); |
---|
| 1882 | out.push_back( type ); |
---|
| 1883 | if ( isPolyType( type ) ) hasDynamicLayout = true; |
---|
| 1884 | } |
---|
| 1885 | assert( baseParam == baseParams.end() && typeParam == typeParams.end() ); |
---|
| 1886 | |
---|
| 1887 | return hasDynamicLayout; |
---|
| 1888 | } |
---|
| 1889 | |
---|
| 1890 | bool PolyGenericCalculator::findGeneric( Type *ty ) { |
---|
[c2ad3c9] | 1891 | ty = replaceTypeInst( ty, env ); |
---|
[9799ec8] | 1892 | |
---|
[8a34677] | 1893 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType* >( ty ) ) { |
---|
| 1894 | if ( scopeTyVars.find( typeInst->get_name() ) != scopeTyVars.end() ) { |
---|
| 1895 | // NOTE assumes here that getting put in the scopeTyVars included having the layout variables set |
---|
| 1896 | return true; |
---|
| 1897 | } |
---|
| 1898 | return false; |
---|
| 1899 | } else if ( StructInstType *structTy = dynamic_cast< StructInstType* >( ty ) ) { |
---|
| 1900 | // check if this type already has a layout generated for it |
---|
[adc6781] | 1901 | std::string typeName = mangleType( ty ); |
---|
| 1902 | if ( knownLayouts.find( typeName ) != knownLayouts.end() ) return true; |
---|
[8a34677] | 1903 | |
---|
| 1904 | // check if any of the type parameters have dynamic layout; if none do, this type is (or will be) monomorphized |
---|
| 1905 | std::list< Type* > otypeParams; |
---|
| 1906 | if ( ! findGenericParams( *structTy->get_baseParameters(), structTy->get_parameters(), otypeParams ) ) return false; |
---|
| 1907 | |
---|
| 1908 | // insert local variables for layout and generate call to layout function |
---|
[adc6781] | 1909 | knownLayouts.insert( typeName ); // done early so as not to interfere with the later addition of parameters to the layout call |
---|
[8a34677] | 1910 | Type *layoutType = new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ); |
---|
| 1911 | |
---|
| 1912 | int n_members = structTy->get_baseStruct()->get_members().size(); |
---|
| 1913 | if ( n_members == 0 ) { |
---|
| 1914 | // all empty structs have the same layout - size 1, align 1 |
---|
[cc3528f] | 1915 | makeVar( sizeofName( typeName ), layoutType, new SingleInit( new ConstantExpr( Constant::from_ulong( (unsigned long)1 ) ) ) ); |
---|
| 1916 | makeVar( alignofName( typeName ), layoutType->clone(), new SingleInit( new ConstantExpr( Constant::from_ulong( (unsigned long)1 ) ) ) ); |
---|
[8a34677] | 1917 | // NOTE zero-length arrays are forbidden in C, so empty structs have no offsetof array |
---|
| 1918 | } else { |
---|
[adc6781] | 1919 | ObjectDecl *sizeVar = makeVar( sizeofName( typeName ), layoutType ); |
---|
| 1920 | ObjectDecl *alignVar = makeVar( alignofName( typeName ), layoutType->clone() ); |
---|
[cb4c607] | 1921 | ObjectDecl *offsetVar = makeVar( offsetofName( typeName ), new ArrayType( Type::Qualifiers(), layoutType->clone(), new ConstantExpr( Constant::from_int( n_members ) ), false, false ) ); |
---|
[8a34677] | 1922 | |
---|
| 1923 | // generate call to layout function |
---|
[adc6781] | 1924 | UntypedExpr *layoutCall = new UntypedExpr( new NameExpr( layoutofName( structTy->get_baseStruct() ) ) ); |
---|
[8a34677] | 1925 | layoutCall->get_args().push_back( new AddressExpr( new VariableExpr( sizeVar ) ) ); |
---|
| 1926 | layoutCall->get_args().push_back( new AddressExpr( new VariableExpr( alignVar ) ) ); |
---|
| 1927 | layoutCall->get_args().push_back( new VariableExpr( offsetVar ) ); |
---|
| 1928 | addOtypeParamsToLayoutCall( layoutCall, otypeParams ); |
---|
| 1929 | |
---|
| 1930 | stmtsToAdd.push_back( new ExprStmt( noLabels, layoutCall ) ); |
---|
| 1931 | } |
---|
| 1932 | |
---|
| 1933 | return true; |
---|
| 1934 | } else if ( UnionInstType *unionTy = dynamic_cast< UnionInstType* >( ty ) ) { |
---|
| 1935 | // check if this type already has a layout generated for it |
---|
[adc6781] | 1936 | std::string typeName = mangleType( ty ); |
---|
| 1937 | if ( knownLayouts.find( typeName ) != knownLayouts.end() ) return true; |
---|
[8a34677] | 1938 | |
---|
| 1939 | // check if any of the type parameters have dynamic layout; if none do, this type is (or will be) monomorphized |
---|
| 1940 | std::list< Type* > otypeParams; |
---|
| 1941 | if ( ! findGenericParams( *unionTy->get_baseParameters(), unionTy->get_parameters(), otypeParams ) ) return false; |
---|
| 1942 | |
---|
| 1943 | // insert local variables for layout and generate call to layout function |
---|
[adc6781] | 1944 | knownLayouts.insert( typeName ); // done early so as not to interfere with the later addition of parameters to the layout call |
---|
[8a34677] | 1945 | Type *layoutType = new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ); |
---|
| 1946 | |
---|
[adc6781] | 1947 | ObjectDecl *sizeVar = makeVar( sizeofName( typeName ), layoutType ); |
---|
| 1948 | ObjectDecl *alignVar = makeVar( alignofName( typeName ), layoutType->clone() ); |
---|
[8a34677] | 1949 | |
---|
| 1950 | // generate call to layout function |
---|
[adc6781] | 1951 | UntypedExpr *layoutCall = new UntypedExpr( new NameExpr( layoutofName( unionTy->get_baseUnion() ) ) ); |
---|
[8a34677] | 1952 | layoutCall->get_args().push_back( new AddressExpr( new VariableExpr( sizeVar ) ) ); |
---|
| 1953 | layoutCall->get_args().push_back( new AddressExpr( new VariableExpr( alignVar ) ) ); |
---|
| 1954 | addOtypeParamsToLayoutCall( layoutCall, otypeParams ); |
---|
| 1955 | |
---|
| 1956 | stmtsToAdd.push_back( new ExprStmt( noLabels, layoutCall ) ); |
---|
| 1957 | |
---|
| 1958 | return true; |
---|
| 1959 | } |
---|
| 1960 | |
---|
| 1961 | return false; |
---|
| 1962 | } |
---|
| 1963 | |
---|
| 1964 | Expression *PolyGenericCalculator::mutate( SizeofExpr *sizeofExpr ) { |
---|
| 1965 | Type *ty = sizeofExpr->get_type(); |
---|
| 1966 | if ( findGeneric( ty ) ) { |
---|
[adc6781] | 1967 | Expression *ret = new NameExpr( sizeofName( mangleType( ty ) ) ); |
---|
[8a34677] | 1968 | delete sizeofExpr; |
---|
| 1969 | return ret; |
---|
| 1970 | } |
---|
| 1971 | return sizeofExpr; |
---|
| 1972 | } |
---|
| 1973 | |
---|
| 1974 | Expression *PolyGenericCalculator::mutate( AlignofExpr *alignofExpr ) { |
---|
| 1975 | Type *ty = alignofExpr->get_type(); |
---|
| 1976 | if ( findGeneric( ty ) ) { |
---|
[adc6781] | 1977 | Expression *ret = new NameExpr( alignofName( mangleType( ty ) ) ); |
---|
[8a34677] | 1978 | delete alignofExpr; |
---|
| 1979 | return ret; |
---|
| 1980 | } |
---|
| 1981 | return alignofExpr; |
---|
| 1982 | } |
---|
| 1983 | |
---|
| 1984 | Expression *PolyGenericCalculator::mutate( OffsetofExpr *offsetofExpr ) { |
---|
[2a4b088] | 1985 | // mutate, exiting early if no longer OffsetofExpr |
---|
[1ba88a0] | 1986 | Expression *expr = Parent::mutate( offsetofExpr ); |
---|
[2a4b088] | 1987 | offsetofExpr = dynamic_cast< OffsetofExpr* >( expr ); |
---|
| 1988 | if ( ! offsetofExpr ) return expr; |
---|
| 1989 | |
---|
| 1990 | // only mutate expressions for polymorphic structs/unions |
---|
[8a34677] | 1991 | Type *ty = offsetofExpr->get_type(); |
---|
| 1992 | if ( ! findGeneric( ty ) ) return offsetofExpr; |
---|
[2a4b088] | 1993 | |
---|
| 1994 | if ( StructInstType *structType = dynamic_cast< StructInstType* >( ty ) ) { |
---|
| 1995 | // replace offsetof expression by index into offset array |
---|
| 1996 | long i = findMember( offsetofExpr->get_member(), structType->get_baseStruct()->get_members() ); |
---|
| 1997 | if ( i == -1 ) return offsetofExpr; |
---|
| 1998 | |
---|
| 1999 | Expression *offsetInd = makeOffsetIndex( ty, i ); |
---|
| 2000 | delete offsetofExpr; |
---|
| 2001 | return offsetInd; |
---|
[5c52b06] | 2002 | } else if ( dynamic_cast< UnionInstType* >( ty ) ) { |
---|
[2a4b088] | 2003 | // all union members are at offset zero |
---|
| 2004 | delete offsetofExpr; |
---|
[ca35c51] | 2005 | return new ConstantExpr( Constant( new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), "0" ) ); |
---|
[2a4b088] | 2006 | } else return offsetofExpr; |
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[05d47278] | 2007 | } |
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| 2008 | |
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[8a34677] | 2009 | Expression *PolyGenericCalculator::mutate( OffsetPackExpr *offsetPackExpr ) { |
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| 2010 | StructInstType *ty = offsetPackExpr->get_type(); |
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| 2011 | |
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| 2012 | Expression *ret = 0; |
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| 2013 | if ( findGeneric( ty ) ) { |
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| 2014 | // pull offset back from generated type information |
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[adc6781] | 2015 | ret = new NameExpr( offsetofName( mangleType( ty ) ) ); |
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[8a34677] | 2016 | } else { |
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[adc6781] | 2017 | std::string offsetName = offsetofName( mangleType( ty ) ); |
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[8a34677] | 2018 | if ( knownOffsets.find( offsetName ) != knownOffsets.end() ) { |
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| 2019 | // use the already-generated offsets for this type |
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| 2020 | ret = new NameExpr( offsetName ); |
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| 2021 | } else { |
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| 2022 | knownOffsets.insert( offsetName ); |
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| 2023 | |
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| 2024 | std::list< Declaration* > &baseMembers = ty->get_baseStruct()->get_members(); |
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| 2025 | Type *offsetType = new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ); |
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| 2026 | |
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| 2027 | // build initializer list for offset array |
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| 2028 | std::list< Initializer* > inits; |
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| 2029 | for ( std::list< Declaration* >::const_iterator member = baseMembers.begin(); member != baseMembers.end(); ++member ) { |
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| 2030 | DeclarationWithType *memberDecl; |
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| 2031 | if ( DeclarationWithType *origMember = dynamic_cast< DeclarationWithType* >( *member ) ) { |
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| 2032 | memberDecl = origMember->clone(); |
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| 2033 | } else { |
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| 2034 | memberDecl = new ObjectDecl( (*member)->get_name(), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, offsetType->clone(), 0 ); |
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| 2035 | } |
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| 2036 | inits.push_back( new SingleInit( new OffsetofExpr( ty->clone(), memberDecl ) ) ); |
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| 2037 | } |
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| 2038 | |
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| 2039 | // build the offset array and replace the pack with a reference to it |
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[cb4c607] | 2040 | ObjectDecl *offsetArray = makeVar( offsetName, new ArrayType( Type::Qualifiers(), offsetType, new ConstantExpr( Constant::from_ulong( baseMembers.size() ) ), false, false ), |
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[8a34677] | 2041 | new ListInit( inits ) ); |
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| 2042 | ret = new VariableExpr( offsetArray ); |
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| 2043 | } |
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| 2044 | } |
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| 2045 | |
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| 2046 | delete offsetPackExpr; |
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| 2047 | return ret; |
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| 2048 | } |
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| 2049 | |
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| 2050 | void PolyGenericCalculator::doBeginScope() { |
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| 2051 | knownLayouts.beginScope(); |
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| 2052 | knownOffsets.beginScope(); |
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| 2053 | } |
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| 2054 | |
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| 2055 | void PolyGenericCalculator::doEndScope() { |
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| 2056 | knownLayouts.endScope(); |
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[adc6781] | 2057 | knownOffsets.endScope(); |
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[8a34677] | 2058 | } |
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| 2059 | |
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[05d47278] | 2060 | ////////////////////////////////////////// Pass3 //////////////////////////////////////////////////// |
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| 2061 | |
---|
| 2062 | template< typename DeclClass > |
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| 2063 | DeclClass * Pass3::handleDecl( DeclClass *decl, Type *type ) { |
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[6f49cdf] | 2064 | scopeTyVars.beginScope(); |
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[05d47278] | 2065 | makeTyVarMap( type, scopeTyVars ); |
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| 2066 | |
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| 2067 | DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) ); |
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[f18a711] | 2068 | ScrubTyVars::scrub( decl, scopeTyVars ); |
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[05d47278] | 2069 | |
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[6f49cdf] | 2070 | scopeTyVars.endScope(); |
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[05d47278] | 2071 | return ret; |
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| 2072 | } |
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| 2073 | |
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| 2074 | ObjectDecl * Pass3::mutate( ObjectDecl *objectDecl ) { |
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| 2075 | return handleDecl( objectDecl, objectDecl->get_type() ); |
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| 2076 | } |
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| 2077 | |
---|
| 2078 | DeclarationWithType * Pass3::mutate( FunctionDecl *functionDecl ) { |
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| 2079 | return handleDecl( functionDecl, functionDecl->get_functionType() ); |
---|
| 2080 | } |
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| 2081 | |
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| 2082 | TypedefDecl * Pass3::mutate( TypedefDecl *typedefDecl ) { |
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| 2083 | return handleDecl( typedefDecl, typedefDecl->get_base() ); |
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| 2084 | } |
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| 2085 | |
---|
| 2086 | TypeDecl * Pass3::mutate( TypeDecl *typeDecl ) { |
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| 2087 | // Initializer *init = 0; |
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| 2088 | // std::list< Expression *> designators; |
---|
| 2089 | // scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
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| 2090 | // if ( typeDecl->get_base() ) { |
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| 2091 | // init = new SimpleInit( new SizeofExpr( handleDecl( typeDecl, typeDecl->get_base() ) ), designators ); |
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| 2092 | // } |
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| 2093 | // return new ObjectDecl( typeDecl->get_name(), Declaration::Extern, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::UnsignedInt ), init ); |
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| 2094 | |
---|
| 2095 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
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| 2096 | return Mutator::mutate( typeDecl ); |
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| 2097 | } |
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| 2098 | |
---|
| 2099 | Type * Pass3::mutate( PointerType *pointerType ) { |
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[6f49cdf] | 2100 | scopeTyVars.beginScope(); |
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[05d47278] | 2101 | makeTyVarMap( pointerType, scopeTyVars ); |
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| 2102 | |
---|
| 2103 | Type *ret = Mutator::mutate( pointerType ); |
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| 2104 | |
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[6f49cdf] | 2105 | scopeTyVars.endScope(); |
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[05d47278] | 2106 | return ret; |
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| 2107 | } |
---|
| 2108 | |
---|
| 2109 | Type * Pass3::mutate( FunctionType *functionType ) { |
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[6f49cdf] | 2110 | scopeTyVars.beginScope(); |
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[05d47278] | 2111 | makeTyVarMap( functionType, scopeTyVars ); |
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| 2112 | |
---|
| 2113 | Type *ret = Mutator::mutate( functionType ); |
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| 2114 | |
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[6f49cdf] | 2115 | scopeTyVars.endScope(); |
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[05d47278] | 2116 | return ret; |
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| 2117 | } |
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[01aeade] | 2118 | } // anonymous namespace |
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[51b7345] | 2119 | } // namespace GenPoly |
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[01aeade] | 2120 | |
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[51587aa] | 2121 | // Local Variables: // |
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| 2122 | // tab-width: 4 // |
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| 2123 | // mode: c++ // |
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| 2124 | // compile-command: "make install" // |
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| 2125 | // End: // |
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