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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7 | // Box.cc -- |
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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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11 | // Last Modified By : Peter A. Buhr |
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12 | // Last Modified On : Fri Feb 5 16:45:07 2016 |
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13 | // Update Count : 286 |
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14 | // |
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15 | |
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16 | #include <set> |
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17 | #include <stack> |
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18 | #include <string> |
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19 | #include <iterator> |
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20 | #include <algorithm> |
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21 | #include <cassert> |
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22 | |
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23 | #include "Box.h" |
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24 | #include "InstantiateGeneric.h" |
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25 | #include "PolyMutator.h" |
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26 | #include "FindFunction.h" |
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27 | #include "ScrubTyVars.h" |
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28 | |
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29 | #include "Parser/ParseNode.h" |
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30 | |
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31 | #include "SynTree/Constant.h" |
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32 | #include "SynTree/Type.h" |
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33 | #include "SynTree/Expression.h" |
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34 | #include "SynTree/Initializer.h" |
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35 | #include "SynTree/Statement.h" |
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36 | #include "SynTree/Mutator.h" |
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37 | |
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38 | #include "ResolvExpr/TypeEnvironment.h" |
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39 | #include "ResolvExpr/TypeMap.h" |
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40 | #include "ResolvExpr/typeops.h" |
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41 | |
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42 | #include "SymTab/Mangler.h" |
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43 | |
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44 | #include "Common/SemanticError.h" |
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45 | #include "Common/UniqueName.h" |
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46 | #include "Common/utility.h" |
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47 | |
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48 | #include <ext/functional> // temporary |
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49 | |
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50 | namespace GenPoly { |
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51 | namespace { |
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52 | const std::list<Label> noLabels; |
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53 | |
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54 | FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars ); |
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55 | |
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56 | /// 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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57 | class Pass1 : public PolyMutator { |
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58 | public: |
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59 | Pass1(); |
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60 | virtual Expression *mutate( ApplicationExpr *appExpr ); |
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61 | virtual Expression *mutate( AddressExpr *addrExpr ); |
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62 | virtual Expression *mutate( UntypedExpr *expr ); |
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63 | virtual DeclarationWithType* mutate( FunctionDecl *functionDecl ); |
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64 | virtual TypeDecl *mutate( TypeDecl *typeDecl ); |
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65 | virtual Expression *mutate( CommaExpr *commaExpr ); |
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66 | virtual Expression *mutate( ConditionalExpr *condExpr ); |
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67 | virtual Statement * mutate( ReturnStmt *returnStmt ); |
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68 | virtual Type *mutate( PointerType *pointerType ); |
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69 | virtual Type * mutate( FunctionType *functionType ); |
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70 | |
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71 | virtual void doBeginScope(); |
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72 | virtual void doEndScope(); |
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73 | private: |
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74 | /// Makes a new temporary array holding the offsets of the fields of `type`, and returns a new variable expression referencing it |
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75 | Expression *makeOffsetArray( StructInstType *type ); |
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76 | /// Pass the extra type parameters from polymorphic generic arguments or return types into a function application |
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77 | 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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78 | /// passes extra type parameters into a polymorphic function application |
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79 | void passTypeVars( ApplicationExpr *appExpr, ReferenceToType *polyRetType, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ); |
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80 | /// wraps a function application with a new temporary for the out-parameter return value |
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81 | Expression *addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ); |
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82 | /// Replaces all the type parameters of a generic type with their concrete equivalents under the current environment |
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83 | void replaceParametersWithConcrete( ApplicationExpr *appExpr, std::list< Expression* >& params ); |
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84 | /// Replaces a polymorphic type with its concrete equivalant under the current environment (returns itself if concrete). |
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85 | /// If `doClone` is set to false, will not clone interior types |
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86 | Type *replaceWithConcrete( ApplicationExpr *appExpr, Type *type, bool doClone = true ); |
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87 | /// wraps a function application returning a polymorphic type with a new temporary for the out-parameter return value |
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88 | Expression *addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, ReferenceToType *polyType, std::list< Expression *>::iterator &arg ); |
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89 | Expression *applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ); |
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90 | void boxParam( Type *formal, Expression *&arg, const TyVarMap &exprTyVars ); |
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91 | void boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ); |
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92 | void addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ); |
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93 | /// Stores assignment operators from assertion list in local map of assignment operations |
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94 | void findAssignOps( const std::list< TypeDecl *> &forall ); |
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95 | void passAdapters( ApplicationExpr *appExpr, FunctionType *functionType, const TyVarMap &exprTyVars ); |
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96 | FunctionDecl *makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ); |
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97 | /// Replaces intrinsic operator functions with their arithmetic desugaring |
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98 | Expression *handleIntrinsics( ApplicationExpr *appExpr ); |
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99 | /// Inserts a new temporary variable into the current scope with an auto-generated name |
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100 | ObjectDecl *makeTemporary( Type *type ); |
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101 | |
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102 | typedef std::map< std::string, DeclarationWithType *> AdapterMap; |
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103 | std::map< std::string, DeclarationWithType *> assignOps; |
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104 | ResolvExpr::TypeMap< DeclarationWithType > scopedAssignOps; |
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105 | std::stack< AdapterMap > adapters; |
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106 | DeclarationWithType *retval; |
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107 | bool useRetval; |
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108 | UniqueName tempNamer; |
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109 | }; |
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110 | |
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111 | /// Moves polymorphic returns in function types to pointer-type parameters, adds type size and assertion parameters to parameter lists as well |
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112 | class Pass2 : public PolyMutator { |
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113 | public: |
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114 | template< typename DeclClass > |
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115 | DeclClass *handleDecl( DeclClass *decl, Type *type ); |
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116 | virtual DeclarationWithType *mutate( FunctionDecl *functionDecl ); |
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117 | virtual ObjectDecl *mutate( ObjectDecl *objectDecl ); |
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118 | virtual TypeDecl *mutate( TypeDecl *typeDecl ); |
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119 | virtual TypedefDecl *mutate( TypedefDecl *typedefDecl ); |
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120 | virtual Type *mutate( PointerType *pointerType ); |
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121 | virtual Type *mutate( FunctionType *funcType ); |
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122 | private: |
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123 | void addAdapters( FunctionType *functionType ); |
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124 | |
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125 | std::map< UniqueId, std::string > adapterName; |
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126 | }; |
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127 | |
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128 | /// Replaces member expressions for polymorphic types with calculated add-field-offset-and-dereference; |
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129 | /// also fixes offsetof expressions. |
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130 | class MemberExprFixer : public PolyMutator { |
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131 | public: |
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132 | template< typename DeclClass > |
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133 | DeclClass *handleDecl( DeclClass *decl, Type *type ); |
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134 | virtual DeclarationWithType *mutate( FunctionDecl *functionDecl ); |
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135 | virtual ObjectDecl *mutate( ObjectDecl *objectDecl ); |
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136 | virtual TypedefDecl *mutate( TypedefDecl *objectDecl ); |
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137 | virtual TypeDecl *mutate( TypeDecl *objectDecl ); |
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138 | virtual Statement *mutate( DeclStmt *declStmt ); |
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139 | virtual Type *mutate( PointerType *pointerType ); |
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140 | virtual Type *mutate( FunctionType *funcType ); |
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141 | virtual Expression *mutate( MemberExpr *memberExpr ); |
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142 | virtual Expression *mutate( OffsetofExpr *offsetofExpr ); |
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143 | }; |
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144 | |
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145 | /// 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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146 | class Pass3 : public PolyMutator { |
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147 | public: |
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148 | template< typename DeclClass > |
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149 | DeclClass *handleDecl( DeclClass *decl, Type *type ); |
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150 | virtual DeclarationWithType *mutate( FunctionDecl *functionDecl ); |
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151 | virtual ObjectDecl *mutate( ObjectDecl *objectDecl ); |
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152 | virtual TypedefDecl *mutate( TypedefDecl *objectDecl ); |
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153 | virtual TypeDecl *mutate( TypeDecl *objectDecl ); |
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154 | virtual Type *mutate( PointerType *pointerType ); |
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155 | virtual Type *mutate( FunctionType *funcType ); |
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156 | private: |
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157 | }; |
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158 | |
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159 | } // anonymous namespace |
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160 | |
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161 | void printAllNotBuiltin( const std::list< Declaration *>& translationUnit, std::ostream &os ) { |
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162 | for ( std::list< Declaration *>::const_iterator i = translationUnit.begin(); i != translationUnit.end(); ++i ) { |
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163 | if ( ! LinkageSpec::isBuiltin( (*i)->get_linkage() ) ) { |
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164 | (*i)->print( os ); |
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165 | os << std::endl; |
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166 | } // if |
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167 | } // for |
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168 | } |
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169 | |
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170 | /// version of mutateAll with special handling for translation unit so you can check the end of the prelude when debugging |
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171 | template< typename MutatorType > |
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172 | inline void mutateTranslationUnit( std::list< Declaration* > &translationUnit, MutatorType &mutator ) { |
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173 | bool seenIntrinsic = false; |
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174 | SemanticError errors; |
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175 | for ( typename std::list< Declaration* >::iterator i = translationUnit.begin(); i != translationUnit.end(); ++i ) { |
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176 | try { |
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177 | if ( *i ) { |
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178 | if ( (*i)->get_linkage() == LinkageSpec::Intrinsic ) { |
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179 | seenIntrinsic = true; |
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180 | } else if ( seenIntrinsic ) { |
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181 | seenIntrinsic = false; // break on this line when debugging for end of prelude |
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182 | } |
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183 | |
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184 | *i = dynamic_cast< Declaration* >( (*i)->acceptMutator( mutator ) ); |
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185 | assert( *i ); |
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186 | } // if |
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187 | } catch( SemanticError &e ) { |
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188 | errors.append( e ); |
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189 | } // try |
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190 | } // for |
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191 | if ( ! errors.isEmpty() ) { |
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192 | throw errors; |
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193 | } // if |
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194 | } |
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195 | |
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196 | void box( std::list< Declaration *>& translationUnit ) { |
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197 | Pass1 pass1; |
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198 | Pass2 pass2; |
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199 | MemberExprFixer memberFixer; |
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200 | Pass3 pass3; |
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201 | mutateTranslationUnit/*All*/( translationUnit, pass1 ); |
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202 | mutateTranslationUnit/*All*/( translationUnit, pass2 ); |
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203 | instantiateGeneric( translationUnit ); |
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204 | mutateTranslationUnit/*All*/( translationUnit, memberFixer ); |
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205 | mutateTranslationUnit/*All*/( translationUnit, pass3 ); |
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206 | } |
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207 | |
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208 | ////////////////////////////////////////// Pass1 //////////////////////////////////////////////////// |
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209 | |
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210 | namespace { |
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211 | std::string makePolyMonoSuffix( FunctionType * function, const TyVarMap &tyVars ) { |
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212 | std::stringstream name; |
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213 | |
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214 | // NOTE: this function previously used isPolyObj, which failed to produce |
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215 | // the correct thing in some situations. It's not clear to me why this wasn't working. |
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216 | |
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217 | // if the return type or a parameter type involved polymorphic types, then the adapter will need |
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218 | // to take those polymorphic types as pointers. Therefore, there can be two different functions |
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219 | // with the same mangled name, so we need to further mangle the names. |
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220 | for ( std::list< DeclarationWithType *>::iterator retval = function->get_returnVals().begin(); retval != function->get_returnVals().end(); ++retval ) { |
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221 | if ( isPolyType( (*retval)->get_type(), tyVars ) ) { |
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222 | name << "P"; |
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223 | } else { |
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224 | name << "M"; |
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225 | } |
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226 | } |
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227 | name << "_"; |
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228 | std::list< DeclarationWithType *> ¶mList = function->get_parameters(); |
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229 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
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230 | if ( isPolyType( (*arg)->get_type(), tyVars ) ) { |
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231 | name << "P"; |
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232 | } else { |
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233 | name << "M"; |
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234 | } |
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235 | } // for |
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236 | return name.str(); |
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237 | } |
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238 | |
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239 | std::string mangleAdapterName( FunctionType * function, const TyVarMap &tyVars ) { |
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240 | return SymTab::Mangler::mangle( function ) + makePolyMonoSuffix( function, tyVars ); |
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241 | } |
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242 | |
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243 | std::string makeAdapterName( const std::string &mangleName ) { |
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244 | return "_adapter" + mangleName; |
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245 | } |
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246 | |
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247 | Pass1::Pass1() : useRetval( false ), tempNamer( "_temp" ) { |
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248 | adapters.push(AdapterMap()); |
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249 | } |
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250 | |
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251 | /// Returns T if the given declaration is (*?=?)(T *, T) for some TypeInstType T (return not checked, but maybe should be), NULL otherwise |
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252 | TypeInstType *isTypeInstAssignment( DeclarationWithType *decl ) { |
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253 | if ( decl->get_name() == "?=?" ) { |
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254 | if ( FunctionType *funType = getFunctionType( decl->get_type() ) ) { |
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255 | if ( funType->get_parameters().size() == 2 ) { |
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256 | if ( PointerType *pointer = dynamic_cast< PointerType *>( funType->get_parameters().front()->get_type() ) ) { |
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257 | if ( TypeInstType *refType = dynamic_cast< TypeInstType *>( pointer->get_base() ) ) { |
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258 | if ( TypeInstType *refType2 = dynamic_cast< TypeInstType *>( funType->get_parameters().back()->get_type() ) ) { |
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259 | if ( refType->get_name() == refType2->get_name() ) { |
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260 | return refType; |
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261 | } // if |
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262 | } // if |
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263 | } // if |
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264 | } // if |
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265 | } // if |
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266 | } // if |
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267 | } // if |
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268 | return 0; |
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269 | } |
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270 | |
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271 | /// returns T if the given declaration is: (*?=?)(T *, T) for some type T (return not checked, but maybe should be), NULL otherwise |
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272 | /// Only picks assignments where neither parameter is cv-qualified |
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273 | Type *isAssignment( DeclarationWithType *decl ) { |
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274 | if ( decl->get_name() == "?=?" ) { |
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275 | if ( FunctionType *funType = getFunctionType( decl->get_type() ) ) { |
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276 | if ( funType->get_parameters().size() == 2 ) { |
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277 | Type::Qualifiers defaultQualifiers; |
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278 | Type *paramType1 = funType->get_parameters().front()->get_type(); |
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279 | if ( paramType1->get_qualifiers() != defaultQualifiers ) return 0; |
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280 | Type *paramType2 = funType->get_parameters().back()->get_type(); |
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281 | if ( paramType2->get_qualifiers() != defaultQualifiers ) return 0; |
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282 | |
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283 | if ( PointerType *pointerType = dynamic_cast< PointerType* >( paramType1 ) ) { |
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284 | Type *baseType1 = pointerType->get_base(); |
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285 | if ( baseType1->get_qualifiers() != defaultQualifiers ) return 0; |
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286 | SymTab::Indexer dummy; |
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287 | if ( ResolvExpr::typesCompatible( baseType1, paramType2, dummy ) ) { |
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288 | return baseType1; |
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289 | } // if |
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290 | } // if |
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291 | } // if |
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292 | } // if |
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293 | } // if |
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294 | return 0; |
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295 | } |
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296 | |
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297 | void Pass1::findAssignOps( const std::list< TypeDecl *> &forall ) { |
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298 | // what if a nested function uses an assignment operator? |
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299 | // assignOps.clear(); |
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300 | for ( std::list< TypeDecl *>::const_iterator i = forall.begin(); i != forall.end(); ++i ) { |
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301 | for ( std::list< DeclarationWithType *>::const_iterator assert = (*i)->get_assertions().begin(); assert != (*i)->get_assertions().end(); ++assert ) { |
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302 | std::string typeName; |
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303 | if ( TypeInstType *typeInst = isTypeInstAssignment( *assert ) ) { |
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304 | assignOps[ typeInst->get_name() ] = *assert; |
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305 | } // if |
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306 | } // for |
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307 | } // for |
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308 | } |
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309 | |
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310 | DeclarationWithType *Pass1::mutate( FunctionDecl *functionDecl ) { |
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311 | // if this is a polymorphic assignment function, put it in the map for this scope |
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312 | if ( Type *assignedType = isAssignment( functionDecl ) ) { |
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313 | if ( ! dynamic_cast< TypeInstType* >( assignedType ) ) { |
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314 | scopedAssignOps.insert( assignedType, functionDecl ); |
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315 | } |
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316 | } |
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317 | |
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318 | if ( functionDecl->get_statements() ) { // empty routine body ? |
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319 | doBeginScope(); |
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320 | TyVarMap oldtyVars = scopeTyVars; |
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321 | std::map< std::string, DeclarationWithType *> oldassignOps = assignOps; |
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322 | DeclarationWithType *oldRetval = retval; |
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323 | bool oldUseRetval = useRetval; |
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324 | |
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325 | // process polymorphic return value |
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326 | retval = 0; |
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327 | if ( isPolyRet( functionDecl->get_functionType() ) && functionDecl->get_linkage() == LinkageSpec::Cforall ) { |
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328 | retval = functionDecl->get_functionType()->get_returnVals().front(); |
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329 | |
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330 | // give names to unnamed return values |
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331 | if ( retval->get_name() == "" ) { |
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332 | retval->set_name( "_retparm" ); |
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333 | retval->set_linkage( LinkageSpec::C ); |
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334 | } // if |
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335 | } // if |
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336 | |
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337 | FunctionType *functionType = functionDecl->get_functionType(); |
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338 | makeTyVarMap( functionDecl->get_functionType(), scopeTyVars ); |
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339 | findAssignOps( functionDecl->get_functionType()->get_forall() ); |
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340 | |
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341 | std::list< DeclarationWithType *> ¶mList = functionType->get_parameters(); |
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342 | std::list< FunctionType *> functions; |
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343 | for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) { |
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344 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) { |
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345 | findFunction( (*assert)->get_type(), functions, scopeTyVars, needsAdapter ); |
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346 | } // for |
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347 | } // for |
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348 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
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349 | findFunction( (*arg)->get_type(), functions, scopeTyVars, needsAdapter ); |
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350 | } // for |
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351 | |
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352 | AdapterMap & adapters = Pass1::adapters.top(); |
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353 | for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) { |
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354 | std::string mangleName = mangleAdapterName( *funType, scopeTyVars ); |
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355 | if ( adapters.find( mangleName ) == adapters.end() ) { |
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356 | std::string adapterName = makeAdapterName( mangleName ); |
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357 | adapters.insert( std::pair< std::string, DeclarationWithType *>( mangleName, new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) ) ); |
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358 | } // if |
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359 | } // for |
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360 | |
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361 | functionDecl->set_statements( functionDecl->get_statements()->acceptMutator( *this ) ); |
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362 | |
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363 | scopeTyVars = oldtyVars; |
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364 | assignOps = oldassignOps; |
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365 | // std::cerr << "end FunctionDecl: "; |
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366 | // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) { |
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367 | // std::cerr << i->first << " "; |
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368 | // } |
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369 | // std::cerr << "\n"; |
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370 | retval = oldRetval; |
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371 | useRetval = oldUseRetval; |
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372 | doEndScope(); |
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373 | } // if |
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374 | return functionDecl; |
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375 | } |
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376 | |
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377 | TypeDecl *Pass1::mutate( TypeDecl *typeDecl ) { |
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378 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
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379 | return Mutator::mutate( typeDecl ); |
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380 | } |
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381 | |
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382 | Expression *Pass1::mutate( CommaExpr *commaExpr ) { |
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383 | bool oldUseRetval = useRetval; |
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384 | useRetval = false; |
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385 | commaExpr->set_arg1( maybeMutate( commaExpr->get_arg1(), *this ) ); |
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386 | useRetval = oldUseRetval; |
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387 | commaExpr->set_arg2( maybeMutate( commaExpr->get_arg2(), *this ) ); |
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388 | return commaExpr; |
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389 | } |
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390 | |
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391 | Expression *Pass1::mutate( ConditionalExpr *condExpr ) { |
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392 | bool oldUseRetval = useRetval; |
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393 | useRetval = false; |
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394 | condExpr->set_arg1( maybeMutate( condExpr->get_arg1(), *this ) ); |
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395 | useRetval = oldUseRetval; |
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396 | condExpr->set_arg2( maybeMutate( condExpr->get_arg2(), *this ) ); |
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397 | condExpr->set_arg3( maybeMutate( condExpr->get_arg3(), *this ) ); |
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398 | return condExpr; |
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399 | |
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400 | } |
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401 | |
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402 | Expression *Pass1::makeOffsetArray( StructInstType *ty ) { |
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403 | std::list< Declaration* > &baseMembers = ty->get_baseStruct()->get_members(); |
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404 | |
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405 | // make a new temporary array |
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406 | Type *offsetType = new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ); |
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407 | std::stringstream lenGen; |
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408 | lenGen << baseMembers.size(); |
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409 | ConstantExpr *lenExpr = new ConstantExpr( Constant( offsetType->clone(), lenGen.str() ) ); |
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410 | ObjectDecl *arrayTemp = makeTemporary( new ArrayType( Type::Qualifiers(), offsetType, lenExpr, false, false ) ); |
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411 | |
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412 | // build initializer list for temporary |
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413 | std::list< Initializer* > inits; |
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414 | for ( std::list< Declaration* >::const_iterator member = baseMembers.begin(); member != baseMembers.end(); ++member ) { |
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415 | DeclarationWithType *memberDecl; |
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416 | if ( DeclarationWithType *origMember = dynamic_cast< DeclarationWithType* >( *member ) ) { |
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417 | memberDecl = origMember->clone(); |
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418 | } else { |
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419 | memberDecl = new ObjectDecl( (*member)->get_name(), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, offsetType->clone(), 0 ); |
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420 | } |
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421 | inits.push_back( new SingleInit( new OffsetofExpr( ty->clone(), memberDecl ) ) ); |
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422 | } |
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423 | arrayTemp->set_init( new ListInit( inits ) ); |
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424 | |
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425 | // return variable pointing to temporary |
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426 | return new VariableExpr( arrayTemp ); |
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427 | } |
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428 | |
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429 | void Pass1::passArgTypeVars( ApplicationExpr *appExpr, Type *parmType, Type *argBaseType, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars, std::set< std::string > &seenTypes ) { |
---|
430 | Type *polyBase = hasPolyBase( parmType, exprTyVars ); |
---|
431 | if ( polyBase && ! dynamic_cast< TypeInstType* >( polyBase ) ) { |
---|
432 | std::string sizeName = sizeofName( polyBase ); |
---|
433 | if ( seenTypes.count( sizeName ) ) return; |
---|
434 | |
---|
435 | arg = appExpr->get_args().insert( arg, new SizeofExpr( argBaseType->clone() ) ); |
---|
436 | arg++; |
---|
437 | arg = appExpr->get_args().insert( arg, new AlignofExpr( argBaseType->clone() ) ); |
---|
438 | arg++; |
---|
439 | if ( dynamic_cast< StructInstType* >( polyBase ) ) { |
---|
440 | if ( StructInstType *argBaseStructType = dynamic_cast< StructInstType* >( argBaseType ) ) { |
---|
441 | arg = appExpr->get_args().insert( arg, makeOffsetArray( argBaseStructType ) ); |
---|
442 | arg++; |
---|
443 | } else { |
---|
444 | throw SemanticError( "Cannot pass non-struct type for generic struct" ); |
---|
445 | } |
---|
446 | } |
---|
447 | |
---|
448 | seenTypes.insert( sizeName ); |
---|
449 | } |
---|
450 | } |
---|
451 | |
---|
452 | void Pass1::passTypeVars( ApplicationExpr *appExpr, ReferenceToType *polyRetType, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) { |
---|
453 | // pass size/align for type variables |
---|
454 | for ( TyVarMap::const_iterator tyParm = exprTyVars.begin(); tyParm != exprTyVars.end(); ++tyParm ) { |
---|
455 | ResolvExpr::EqvClass eqvClass; |
---|
456 | assert( env ); |
---|
457 | if ( tyParm->second == TypeDecl::Any ) { |
---|
458 | Type *concrete = env->lookup( tyParm->first ); |
---|
459 | if ( concrete ) { |
---|
460 | arg = appExpr->get_args().insert( arg, new SizeofExpr( concrete->clone() ) ); |
---|
461 | arg++; |
---|
462 | arg = appExpr->get_args().insert( arg, new AlignofExpr( concrete->clone() ) ); |
---|
463 | arg++; |
---|
464 | } else { |
---|
465 | throw SemanticError( "unbound type variable in application ", appExpr ); |
---|
466 | } // if |
---|
467 | } // if |
---|
468 | } // for |
---|
469 | |
---|
470 | // add size/align for generic types to parameter list |
---|
471 | if ( appExpr->get_function()->get_results().empty() ) return; |
---|
472 | FunctionType *funcType = getFunctionType( appExpr->get_function()->get_results().front() ); |
---|
473 | assert( funcType ); |
---|
474 | |
---|
475 | std::list< DeclarationWithType* >::const_iterator fnParm = funcType->get_parameters().begin(); |
---|
476 | std::list< Expression* >::const_iterator fnArg = arg; |
---|
477 | std::set< std::string > seenTypes; //< names for generic types we've seen |
---|
478 | |
---|
479 | // a polymorphic return type may need to be added to the argument list |
---|
480 | if ( polyRetType ) { |
---|
481 | Type *concRetType = replaceWithConcrete( appExpr, polyRetType ); |
---|
482 | passArgTypeVars( appExpr, polyRetType, concRetType, arg, exprTyVars, seenTypes ); |
---|
483 | } |
---|
484 | |
---|
485 | // add type information args for presently unseen types in parameter list |
---|
486 | for ( ; fnParm != funcType->get_parameters().end() && fnArg != appExpr->get_args().end(); ++fnParm, ++fnArg ) { |
---|
487 | VariableExpr *fnArgBase = getBaseVar( *fnArg ); |
---|
488 | if ( ! fnArgBase || fnArgBase->get_results().empty() ) continue; |
---|
489 | passArgTypeVars( appExpr, (*fnParm)->get_type(), fnArgBase->get_results().front(), arg, exprTyVars, seenTypes ); |
---|
490 | } |
---|
491 | } |
---|
492 | |
---|
493 | ObjectDecl *Pass1::makeTemporary( Type *type ) { |
---|
494 | ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, type, 0 ); |
---|
495 | stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) ); |
---|
496 | return newObj; |
---|
497 | } |
---|
498 | |
---|
499 | Expression *Pass1::addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ) { |
---|
500 | // ***** Code Removal ***** After introducing a temporary variable for all return expressions, the following code appears superfluous. |
---|
501 | // if ( useRetval ) { |
---|
502 | // assert( retval ); |
---|
503 | // arg = appExpr->get_args().insert( arg, new VariableExpr( retval ) ); |
---|
504 | // arg++; |
---|
505 | // } else { |
---|
506 | |
---|
507 | // Create temporary to hold return value of polymorphic function and produce that temporary as a result |
---|
508 | // using a comma expression. Possibly change comma expression into statement expression "{}" for multiple |
---|
509 | // return values. |
---|
510 | ObjectDecl *newObj = makeTemporary( retType->clone() ); |
---|
511 | Expression *paramExpr = new VariableExpr( newObj ); |
---|
512 | |
---|
513 | // If the type of the temporary is not polymorphic, box temporary by taking its address; |
---|
514 | // otherwise the temporary is already boxed and can be used directly. |
---|
515 | if ( ! isPolyType( newObj->get_type(), scopeTyVars, env ) ) { |
---|
516 | paramExpr = new AddressExpr( paramExpr ); |
---|
517 | } // if |
---|
518 | arg = appExpr->get_args().insert( arg, paramExpr ); // add argument to function call |
---|
519 | arg++; |
---|
520 | // Build a comma expression to call the function and emulate a normal return. |
---|
521 | CommaExpr *commaExpr = new CommaExpr( appExpr, new VariableExpr( newObj ) ); |
---|
522 | commaExpr->set_env( appExpr->get_env() ); |
---|
523 | appExpr->set_env( 0 ); |
---|
524 | return commaExpr; |
---|
525 | // } // if |
---|
526 | // return appExpr; |
---|
527 | } |
---|
528 | |
---|
529 | void Pass1::replaceParametersWithConcrete( ApplicationExpr *appExpr, std::list< Expression* >& params ) { |
---|
530 | for ( std::list< Expression* >::iterator param = params.begin(); param != params.end(); ++param ) { |
---|
531 | TypeExpr *paramType = dynamic_cast< TypeExpr* >( *param ); |
---|
532 | assert(paramType && "Aggregate parameters should be type expressions"); |
---|
533 | paramType->set_type( replaceWithConcrete( appExpr, paramType->get_type(), false ) ); |
---|
534 | } |
---|
535 | } |
---|
536 | |
---|
537 | Type *Pass1::replaceWithConcrete( ApplicationExpr *appExpr, Type *type, bool doClone ) { |
---|
538 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType * >( type ) ) { |
---|
539 | Type *concrete = env->lookup( typeInst->get_name() ); |
---|
540 | if ( concrete == 0 ) { |
---|
541 | throw SemanticError( "Unbound type variable " + typeInst->get_name() + " in ", appExpr ); |
---|
542 | } // if |
---|
543 | return concrete; |
---|
544 | } else if ( StructInstType *structType = dynamic_cast< StructInstType* >( type ) ) { |
---|
545 | if ( doClone ) { |
---|
546 | structType = structType->clone(); |
---|
547 | } |
---|
548 | replaceParametersWithConcrete( appExpr, structType->get_parameters() ); |
---|
549 | return structType; |
---|
550 | } else if ( UnionInstType *unionType = dynamic_cast< UnionInstType* >( type ) ) { |
---|
551 | if ( doClone ) { |
---|
552 | unionType = unionType->clone(); |
---|
553 | } |
---|
554 | replaceParametersWithConcrete( appExpr, unionType->get_parameters() ); |
---|
555 | return unionType; |
---|
556 | } |
---|
557 | return type; |
---|
558 | } |
---|
559 | |
---|
560 | Expression *Pass1::addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, ReferenceToType *polyType, std::list< Expression *>::iterator &arg ) { |
---|
561 | assert( env ); |
---|
562 | Type *concrete = replaceWithConcrete( appExpr, polyType ); |
---|
563 | // add out-parameter for return value |
---|
564 | return addRetParam( appExpr, function, concrete, arg ); |
---|
565 | } |
---|
566 | |
---|
567 | Expression *Pass1::applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) { |
---|
568 | Expression *ret = appExpr; |
---|
569 | if ( ! function->get_returnVals().empty() && isPolyType( function->get_returnVals().front()->get_type(), tyVars ) ) { |
---|
570 | ret = addRetParam( appExpr, function, function->get_returnVals().front()->get_type(), arg ); |
---|
571 | } // if |
---|
572 | std::string mangleName = mangleAdapterName( function, tyVars ); |
---|
573 | std::string adapterName = makeAdapterName( mangleName ); |
---|
574 | |
---|
575 | // cast adaptee to void (*)(), since it may have any type inside a polymorphic function |
---|
576 | Type * adapteeType = new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ); |
---|
577 | appExpr->get_args().push_front( new CastExpr( appExpr->get_function(), adapteeType ) ); |
---|
578 | appExpr->set_function( new NameExpr( adapterName ) ); |
---|
579 | |
---|
580 | return ret; |
---|
581 | } |
---|
582 | |
---|
583 | void Pass1::boxParam( Type *param, Expression *&arg, const TyVarMap &exprTyVars ) { |
---|
584 | assert( ! arg->get_results().empty() ); |
---|
585 | if ( isPolyType( param, exprTyVars ) ) { |
---|
586 | if ( isPolyType( arg->get_results().front() ) ) { |
---|
587 | // if the argument's type is polymorphic, we don't need to box again! |
---|
588 | return; |
---|
589 | } else if ( arg->get_results().front()->get_isLvalue() ) { |
---|
590 | // VariableExpr and MemberExpr are lvalues |
---|
591 | arg = new AddressExpr( arg ); |
---|
592 | } else { |
---|
593 | // use type computed in unification to declare boxed variables |
---|
594 | Type * newType = param->clone(); |
---|
595 | if ( env ) env->apply( newType ); |
---|
596 | ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, newType, 0 ); |
---|
597 | newObj->get_type()->get_qualifiers() = Type::Qualifiers(); // TODO: is this right??? |
---|
598 | stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) ); |
---|
599 | UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
600 | assign->get_args().push_back( new VariableExpr( newObj ) ); |
---|
601 | assign->get_args().push_back( arg ); |
---|
602 | stmtsToAdd.push_back( new ExprStmt( noLabels, assign ) ); |
---|
603 | arg = new AddressExpr( new VariableExpr( newObj ) ); |
---|
604 | } // if |
---|
605 | } // if |
---|
606 | } |
---|
607 | |
---|
608 | /// cast parameters to polymorphic functions so that types are replaced with |
---|
609 | /// void * if they are type parameters in the formal type. |
---|
610 | /// this gets rid of warnings from gcc. |
---|
611 | void addCast( Expression *&actual, Type *formal, const TyVarMap &tyVars ) { |
---|
612 | Type * newType = formal->clone(); |
---|
613 | if ( getFunctionType( newType ) ) { |
---|
614 | newType = ScrubTyVars::scrub( newType, tyVars ); |
---|
615 | actual = new CastExpr( actual, newType ); |
---|
616 | } // if |
---|
617 | } |
---|
618 | |
---|
619 | void Pass1::boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) { |
---|
620 | for ( std::list< DeclarationWithType *>::const_iterator param = function->get_parameters().begin(); param != function->get_parameters().end(); ++param, ++arg ) { |
---|
621 | assert( arg != appExpr->get_args().end() ); |
---|
622 | addCast( *arg, (*param)->get_type(), exprTyVars ); |
---|
623 | boxParam( (*param)->get_type(), *arg, exprTyVars ); |
---|
624 | } // for |
---|
625 | } |
---|
626 | |
---|
627 | void Pass1::addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) { |
---|
628 | std::list< Expression *>::iterator cur = arg; |
---|
629 | for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) { |
---|
630 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) { |
---|
631 | InferredParams::const_iterator inferParam = appExpr->get_inferParams().find( (*assert)->get_uniqueId() ); |
---|
632 | assert( inferParam != appExpr->get_inferParams().end() && "NOTE: Explicit casts of polymorphic functions to compatible monomorphic functions are currently unsupported" ); |
---|
633 | Expression *newExpr = inferParam->second.expr->clone(); |
---|
634 | addCast( newExpr, (*assert)->get_type(), tyVars ); |
---|
635 | boxParam( (*assert)->get_type(), newExpr, tyVars ); |
---|
636 | appExpr->get_args().insert( cur, newExpr ); |
---|
637 | } // for |
---|
638 | } // for |
---|
639 | } |
---|
640 | |
---|
641 | void makeRetParm( FunctionType *funcType ) { |
---|
642 | DeclarationWithType *retParm = funcType->get_returnVals().front(); |
---|
643 | |
---|
644 | // make a new parameter that is a pointer to the type of the old return value |
---|
645 | retParm->set_type( new PointerType( Type::Qualifiers(), retParm->get_type() ) ); |
---|
646 | funcType->get_parameters().push_front( retParm ); |
---|
647 | |
---|
648 | // we don't need the return value any more |
---|
649 | funcType->get_returnVals().clear(); |
---|
650 | } |
---|
651 | |
---|
652 | FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars ) { |
---|
653 | // actually make the adapter type |
---|
654 | FunctionType *adapter = adaptee->clone(); |
---|
655 | if ( ! adapter->get_returnVals().empty() && isPolyType( adapter->get_returnVals().front()->get_type(), tyVars ) ) { |
---|
656 | makeRetParm( adapter ); |
---|
657 | } // if |
---|
658 | adapter->get_parameters().push_front( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ) ); |
---|
659 | return adapter; |
---|
660 | } |
---|
661 | |
---|
662 | Expression *makeAdapterArg( DeclarationWithType *param, DeclarationWithType *arg, DeclarationWithType *realParam, const TyVarMap &tyVars ) { |
---|
663 | assert( param ); |
---|
664 | assert( arg ); |
---|
665 | if ( isPolyType( realParam->get_type(), tyVars ) ) { |
---|
666 | if ( ! isPolyType( arg->get_type() ) ) { |
---|
667 | UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
668 | deref->get_args().push_back( new CastExpr( new VariableExpr( param ), new PointerType( Type::Qualifiers(), arg->get_type()->clone() ) ) ); |
---|
669 | deref->get_results().push_back( arg->get_type()->clone() ); |
---|
670 | return deref; |
---|
671 | } // if |
---|
672 | } // if |
---|
673 | return new VariableExpr( param ); |
---|
674 | } |
---|
675 | |
---|
676 | 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 ) { |
---|
677 | UniqueName paramNamer( "_p" ); |
---|
678 | for ( ; param != paramEnd; ++param, ++arg, ++realParam ) { |
---|
679 | if ( (*param)->get_name() == "" ) { |
---|
680 | (*param)->set_name( paramNamer.newName() ); |
---|
681 | (*param)->set_linkage( LinkageSpec::C ); |
---|
682 | } // if |
---|
683 | adapteeApp->get_args().push_back( makeAdapterArg( *param, *arg, *realParam, tyVars ) ); |
---|
684 | } // for |
---|
685 | } |
---|
686 | |
---|
687 | |
---|
688 | |
---|
689 | FunctionDecl *Pass1::makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ) { |
---|
690 | FunctionType *adapterType = makeAdapterType( adaptee, tyVars ); |
---|
691 | adapterType = ScrubTyVars::scrub( adapterType, tyVars ); |
---|
692 | DeclarationWithType *adapteeDecl = adapterType->get_parameters().front(); |
---|
693 | adapteeDecl->set_name( "_adaptee" ); |
---|
694 | ApplicationExpr *adapteeApp = new ApplicationExpr( new CastExpr( new VariableExpr( adapteeDecl ), new PointerType( Type::Qualifiers(), realType ) ) ); |
---|
695 | Statement *bodyStmt; |
---|
696 | |
---|
697 | std::list< TypeDecl *>::iterator tyArg = realType->get_forall().begin(); |
---|
698 | std::list< TypeDecl *>::iterator tyParam = adapterType->get_forall().begin(); |
---|
699 | std::list< TypeDecl *>::iterator realTyParam = adaptee->get_forall().begin(); |
---|
700 | for ( ; tyParam != adapterType->get_forall().end(); ++tyArg, ++tyParam, ++realTyParam ) { |
---|
701 | assert( tyArg != realType->get_forall().end() ); |
---|
702 | std::list< DeclarationWithType *>::iterator assertArg = (*tyArg)->get_assertions().begin(); |
---|
703 | std::list< DeclarationWithType *>::iterator assertParam = (*tyParam)->get_assertions().begin(); |
---|
704 | std::list< DeclarationWithType *>::iterator realAssertParam = (*realTyParam)->get_assertions().begin(); |
---|
705 | for ( ; assertParam != (*tyParam)->get_assertions().end(); ++assertArg, ++assertParam, ++realAssertParam ) { |
---|
706 | assert( assertArg != (*tyArg)->get_assertions().end() ); |
---|
707 | adapteeApp->get_args().push_back( makeAdapterArg( *assertParam, *assertArg, *realAssertParam, tyVars ) ); |
---|
708 | } // for |
---|
709 | } // for |
---|
710 | |
---|
711 | std::list< DeclarationWithType *>::iterator arg = realType->get_parameters().begin(); |
---|
712 | std::list< DeclarationWithType *>::iterator param = adapterType->get_parameters().begin(); |
---|
713 | std::list< DeclarationWithType *>::iterator realParam = adaptee->get_parameters().begin(); |
---|
714 | param++; // skip adaptee parameter |
---|
715 | if ( realType->get_returnVals().empty() ) { |
---|
716 | addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars ); |
---|
717 | bodyStmt = new ExprStmt( noLabels, adapteeApp ); |
---|
718 | } else if ( isPolyType( adaptee->get_returnVals().front()->get_type(), tyVars ) ) { |
---|
719 | if ( (*param)->get_name() == "" ) { |
---|
720 | (*param)->set_name( "_ret" ); |
---|
721 | (*param)->set_linkage( LinkageSpec::C ); |
---|
722 | } // if |
---|
723 | UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
724 | UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
725 | deref->get_args().push_back( new CastExpr( new VariableExpr( *param++ ), new PointerType( Type::Qualifiers(), realType->get_returnVals().front()->get_type()->clone() ) ) ); |
---|
726 | assign->get_args().push_back( deref ); |
---|
727 | addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars ); |
---|
728 | assign->get_args().push_back( adapteeApp ); |
---|
729 | bodyStmt = new ExprStmt( noLabels, assign ); |
---|
730 | } else { |
---|
731 | // adapter for a function that returns a monomorphic value |
---|
732 | addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars ); |
---|
733 | bodyStmt = new ReturnStmt( noLabels, adapteeApp ); |
---|
734 | } // if |
---|
735 | CompoundStmt *adapterBody = new CompoundStmt( noLabels ); |
---|
736 | adapterBody->get_kids().push_back( bodyStmt ); |
---|
737 | std::string adapterName = makeAdapterName( mangleName ); |
---|
738 | return new FunctionDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, adapterType, adapterBody, false, false ); |
---|
739 | } |
---|
740 | |
---|
741 | void Pass1::passAdapters( ApplicationExpr * appExpr, FunctionType * functionType, const TyVarMap & exprTyVars ) { |
---|
742 | // collect a list of function types passed as parameters or implicit parameters (assertions) |
---|
743 | std::list< DeclarationWithType *> ¶mList = functionType->get_parameters(); |
---|
744 | std::list< FunctionType *> functions; |
---|
745 | for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) { |
---|
746 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) { |
---|
747 | findFunction( (*assert)->get_type(), functions, exprTyVars, needsAdapter ); |
---|
748 | } // for |
---|
749 | } // for |
---|
750 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
---|
751 | findFunction( (*arg)->get_type(), functions, exprTyVars, needsAdapter ); |
---|
752 | } // for |
---|
753 | |
---|
754 | // parameter function types for which an appropriate adapter has been generated. we cannot use the types |
---|
755 | // after applying substitutions, since two different parameter types may be unified to the same type |
---|
756 | std::set< std::string > adaptersDone; |
---|
757 | |
---|
758 | for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) { |
---|
759 | FunctionType *originalFunction = (*funType)->clone(); |
---|
760 | FunctionType *realFunction = (*funType)->clone(); |
---|
761 | std::string mangleName = SymTab::Mangler::mangle( realFunction ); |
---|
762 | |
---|
763 | // only attempt to create an adapter or pass one as a parameter if we haven't already done so for this |
---|
764 | // pre-substitution parameter function type. |
---|
765 | if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) { |
---|
766 | adaptersDone.insert( adaptersDone.begin(), mangleName ); |
---|
767 | |
---|
768 | // apply substitution to type variables to figure out what the adapter's type should look like |
---|
769 | assert( env ); |
---|
770 | env->apply( realFunction ); |
---|
771 | mangleName = SymTab::Mangler::mangle( realFunction ); |
---|
772 | mangleName += makePolyMonoSuffix( originalFunction, exprTyVars ); |
---|
773 | |
---|
774 | AdapterMap & adapters = Pass1::adapters.top(); |
---|
775 | AdapterMap::iterator adapter = adapters.find( mangleName ); |
---|
776 | if ( adapter == adapters.end() ) { |
---|
777 | // adapter has not been created yet in the current scope, so define it |
---|
778 | FunctionDecl *newAdapter = makeAdapter( *funType, realFunction, mangleName, exprTyVars ); |
---|
779 | adapter = adapters.insert( adapters.begin(), std::pair< std::string, DeclarationWithType *>( mangleName, newAdapter ) ); |
---|
780 | stmtsToAdd.push_back( new DeclStmt( noLabels, newAdapter ) ); |
---|
781 | } // if |
---|
782 | assert( adapter != adapters.end() ); |
---|
783 | |
---|
784 | // add the appropriate adapter as a parameter |
---|
785 | appExpr->get_args().push_front( new VariableExpr( adapter->second ) ); |
---|
786 | } // if |
---|
787 | } // for |
---|
788 | } // passAdapters |
---|
789 | |
---|
790 | Expression *makeIncrDecrExpr( ApplicationExpr *appExpr, Type *polyType, bool isIncr ) { |
---|
791 | NameExpr *opExpr; |
---|
792 | if ( isIncr ) { |
---|
793 | opExpr = new NameExpr( "?+=?" ); |
---|
794 | } else { |
---|
795 | opExpr = new NameExpr( "?-=?" ); |
---|
796 | } // if |
---|
797 | UntypedExpr *addAssign = new UntypedExpr( opExpr ); |
---|
798 | if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) { |
---|
799 | addAssign->get_args().push_back( address->get_arg() ); |
---|
800 | } else { |
---|
801 | addAssign->get_args().push_back( appExpr->get_args().front() ); |
---|
802 | } // if |
---|
803 | addAssign->get_args().push_back( new NameExpr( sizeofName( polyType ) ) ); |
---|
804 | addAssign->get_results().front() = appExpr->get_results().front()->clone(); |
---|
805 | if ( appExpr->get_env() ) { |
---|
806 | addAssign->set_env( appExpr->get_env() ); |
---|
807 | appExpr->set_env( 0 ); |
---|
808 | } // if |
---|
809 | appExpr->get_args().clear(); |
---|
810 | delete appExpr; |
---|
811 | return addAssign; |
---|
812 | } |
---|
813 | |
---|
814 | Expression *Pass1::handleIntrinsics( ApplicationExpr *appExpr ) { |
---|
815 | if ( VariableExpr *varExpr = dynamic_cast< VariableExpr *>( appExpr->get_function() ) ) { |
---|
816 | if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic ) { |
---|
817 | if ( varExpr->get_var()->get_name() == "?[?]" ) { |
---|
818 | assert( ! appExpr->get_results().empty() ); |
---|
819 | assert( appExpr->get_args().size() == 2 ); |
---|
820 | Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), scopeTyVars, env ); |
---|
821 | Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), scopeTyVars, env ); |
---|
822 | assert( ! baseType1 || ! baseType2 ); // the arguments cannot both be polymorphic pointers |
---|
823 | UntypedExpr *ret = 0; |
---|
824 | if ( baseType1 || baseType2 ) { // one of the arguments is a polymorphic pointer |
---|
825 | ret = new UntypedExpr( new NameExpr( "?+?" ) ); |
---|
826 | } // if |
---|
827 | if ( baseType1 ) { |
---|
828 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
829 | multiply->get_args().push_back( appExpr->get_args().back() ); |
---|
830 | multiply->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) ); |
---|
831 | ret->get_args().push_back( appExpr->get_args().front() ); |
---|
832 | ret->get_args().push_back( multiply ); |
---|
833 | } else if ( baseType2 ) { |
---|
834 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
835 | multiply->get_args().push_back( appExpr->get_args().front() ); |
---|
836 | multiply->get_args().push_back( new NameExpr( sizeofName( baseType2 ) ) ); |
---|
837 | ret->get_args().push_back( multiply ); |
---|
838 | ret->get_args().push_back( appExpr->get_args().back() ); |
---|
839 | } // if |
---|
840 | if ( baseType1 || baseType2 ) { |
---|
841 | ret->get_results().push_front( appExpr->get_results().front()->clone() ); |
---|
842 | if ( appExpr->get_env() ) { |
---|
843 | ret->set_env( appExpr->get_env() ); |
---|
844 | appExpr->set_env( 0 ); |
---|
845 | } // if |
---|
846 | appExpr->get_args().clear(); |
---|
847 | delete appExpr; |
---|
848 | return ret; |
---|
849 | } // if |
---|
850 | } else if ( varExpr->get_var()->get_name() == "*?" ) { |
---|
851 | assert( ! appExpr->get_results().empty() ); |
---|
852 | assert( ! appExpr->get_args().empty() ); |
---|
853 | if ( isPolyType( appExpr->get_results().front(), scopeTyVars, env ) ) { |
---|
854 | Expression *ret = appExpr->get_args().front(); |
---|
855 | delete ret->get_results().front(); |
---|
856 | ret->get_results().front() = appExpr->get_results().front()->clone(); |
---|
857 | if ( appExpr->get_env() ) { |
---|
858 | ret->set_env( appExpr->get_env() ); |
---|
859 | appExpr->set_env( 0 ); |
---|
860 | } // if |
---|
861 | appExpr->get_args().clear(); |
---|
862 | delete appExpr; |
---|
863 | return ret; |
---|
864 | } // if |
---|
865 | } else if ( varExpr->get_var()->get_name() == "?++" || varExpr->get_var()->get_name() == "?--" ) { |
---|
866 | assert( ! appExpr->get_results().empty() ); |
---|
867 | assert( appExpr->get_args().size() == 1 ); |
---|
868 | if ( Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ) ) { |
---|
869 | Type *tempType = appExpr->get_results().front()->clone(); |
---|
870 | if ( env ) { |
---|
871 | env->apply( tempType ); |
---|
872 | } // if |
---|
873 | ObjectDecl *newObj = makeTemporary( tempType ); |
---|
874 | VariableExpr *tempExpr = new VariableExpr( newObj ); |
---|
875 | UntypedExpr *assignExpr = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
876 | assignExpr->get_args().push_back( tempExpr->clone() ); |
---|
877 | if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) { |
---|
878 | assignExpr->get_args().push_back( address->get_arg()->clone() ); |
---|
879 | } else { |
---|
880 | assignExpr->get_args().push_back( appExpr->get_args().front()->clone() ); |
---|
881 | } // if |
---|
882 | CommaExpr *firstComma = new CommaExpr( assignExpr, makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "?++" ) ); |
---|
883 | return new CommaExpr( firstComma, tempExpr ); |
---|
884 | } // if |
---|
885 | } else if ( varExpr->get_var()->get_name() == "++?" || varExpr->get_var()->get_name() == "--?" ) { |
---|
886 | assert( ! appExpr->get_results().empty() ); |
---|
887 | assert( appExpr->get_args().size() == 1 ); |
---|
888 | if ( Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ) ) { |
---|
889 | return makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "++?" ); |
---|
890 | } // if |
---|
891 | } else if ( varExpr->get_var()->get_name() == "?+?" || varExpr->get_var()->get_name() == "?-?" ) { |
---|
892 | assert( ! appExpr->get_results().empty() ); |
---|
893 | assert( appExpr->get_args().size() == 2 ); |
---|
894 | Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), scopeTyVars, env ); |
---|
895 | Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), scopeTyVars, env ); |
---|
896 | if ( baseType1 && baseType2 ) { |
---|
897 | UntypedExpr *divide = new UntypedExpr( new NameExpr( "?/?" ) ); |
---|
898 | divide->get_args().push_back( appExpr ); |
---|
899 | divide->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) ); |
---|
900 | divide->get_results().push_front( appExpr->get_results().front()->clone() ); |
---|
901 | if ( appExpr->get_env() ) { |
---|
902 | divide->set_env( appExpr->get_env() ); |
---|
903 | appExpr->set_env( 0 ); |
---|
904 | } // if |
---|
905 | return divide; |
---|
906 | } else if ( baseType1 ) { |
---|
907 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
908 | multiply->get_args().push_back( appExpr->get_args().back() ); |
---|
909 | multiply->get_args().push_back( new NameExpr( sizeofName( baseType1 ) ) ); |
---|
910 | appExpr->get_args().back() = multiply; |
---|
911 | } else if ( baseType2 ) { |
---|
912 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
913 | multiply->get_args().push_back( appExpr->get_args().front() ); |
---|
914 | multiply->get_args().push_back( new NameExpr( sizeofName( baseType2 ) ) ); |
---|
915 | appExpr->get_args().front() = multiply; |
---|
916 | } // if |
---|
917 | } else if ( varExpr->get_var()->get_name() == "?+=?" || varExpr->get_var()->get_name() == "?-=?" ) { |
---|
918 | assert( ! appExpr->get_results().empty() ); |
---|
919 | assert( appExpr->get_args().size() == 2 ); |
---|
920 | Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ); |
---|
921 | if ( baseType ) { |
---|
922 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
923 | multiply->get_args().push_back( appExpr->get_args().back() ); |
---|
924 | multiply->get_args().push_back( new NameExpr( sizeofName( baseType ) ) ); |
---|
925 | appExpr->get_args().back() = multiply; |
---|
926 | } // if |
---|
927 | } // if |
---|
928 | return appExpr; |
---|
929 | } // if |
---|
930 | } // if |
---|
931 | return 0; |
---|
932 | } |
---|
933 | |
---|
934 | Expression *Pass1::mutate( ApplicationExpr *appExpr ) { |
---|
935 | // std::cerr << "mutate appExpr: "; |
---|
936 | // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) { |
---|
937 | // std::cerr << i->first << " "; |
---|
938 | // } |
---|
939 | // std::cerr << "\n"; |
---|
940 | bool oldUseRetval = useRetval; |
---|
941 | useRetval = false; |
---|
942 | appExpr->get_function()->acceptMutator( *this ); |
---|
943 | mutateAll( appExpr->get_args(), *this ); |
---|
944 | useRetval = oldUseRetval; |
---|
945 | |
---|
946 | assert( ! appExpr->get_function()->get_results().empty() ); |
---|
947 | PointerType *pointer = dynamic_cast< PointerType *>( appExpr->get_function()->get_results().front() ); |
---|
948 | assert( pointer ); |
---|
949 | FunctionType *function = dynamic_cast< FunctionType *>( pointer->get_base() ); |
---|
950 | assert( function ); |
---|
951 | |
---|
952 | if ( Expression *newExpr = handleIntrinsics( appExpr ) ) { |
---|
953 | return newExpr; |
---|
954 | } // if |
---|
955 | |
---|
956 | Expression *ret = appExpr; |
---|
957 | |
---|
958 | std::list< Expression *>::iterator arg = appExpr->get_args().begin(); |
---|
959 | std::list< Expression *>::iterator paramBegin = appExpr->get_args().begin(); |
---|
960 | |
---|
961 | TyVarMap exprTyVars; |
---|
962 | makeTyVarMap( function, exprTyVars ); |
---|
963 | ReferenceToType *polyRetType = isPolyRet( function ); |
---|
964 | |
---|
965 | if ( polyRetType ) { |
---|
966 | ret = addPolyRetParam( appExpr, function, polyRetType, arg ); |
---|
967 | } else if ( needsAdapter( function, scopeTyVars ) ) { |
---|
968 | // std::cerr << "needs adapter: "; |
---|
969 | // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) { |
---|
970 | // std::cerr << i->first << " "; |
---|
971 | // } |
---|
972 | // std::cerr << "\n"; |
---|
973 | // change the application so it calls the adapter rather than the passed function |
---|
974 | ret = applyAdapter( appExpr, function, arg, scopeTyVars ); |
---|
975 | } // if |
---|
976 | arg = appExpr->get_args().begin(); |
---|
977 | |
---|
978 | passTypeVars( appExpr, polyRetType, arg, exprTyVars ); |
---|
979 | addInferredParams( appExpr, function, arg, exprTyVars ); |
---|
980 | |
---|
981 | arg = paramBegin; |
---|
982 | |
---|
983 | boxParams( appExpr, function, arg, exprTyVars ); |
---|
984 | |
---|
985 | passAdapters( appExpr, function, exprTyVars ); |
---|
986 | |
---|
987 | return ret; |
---|
988 | } |
---|
989 | |
---|
990 | Expression *Pass1::mutate( UntypedExpr *expr ) { |
---|
991 | if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), scopeTyVars, env ) ) { |
---|
992 | if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) { |
---|
993 | if ( name->get_name() == "*?" ) { |
---|
994 | Expression *ret = expr->get_args().front(); |
---|
995 | expr->get_args().clear(); |
---|
996 | delete expr; |
---|
997 | return ret->acceptMutator( *this ); |
---|
998 | } // if |
---|
999 | } // if |
---|
1000 | } // if |
---|
1001 | return PolyMutator::mutate( expr ); |
---|
1002 | } |
---|
1003 | |
---|
1004 | Expression *Pass1::mutate( AddressExpr *addrExpr ) { |
---|
1005 | assert( ! addrExpr->get_arg()->get_results().empty() ); |
---|
1006 | |
---|
1007 | bool needs = false; |
---|
1008 | if ( UntypedExpr *expr = dynamic_cast< UntypedExpr *>( addrExpr->get_arg() ) ) { |
---|
1009 | if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), scopeTyVars, env ) ) { |
---|
1010 | if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) { |
---|
1011 | if ( name->get_name() == "*?" ) { |
---|
1012 | if ( ApplicationExpr * appExpr = dynamic_cast< ApplicationExpr * >( expr->get_args().front() ) ) { |
---|
1013 | assert( ! appExpr->get_function()->get_results().empty() ); |
---|
1014 | PointerType *pointer = dynamic_cast< PointerType *>( appExpr->get_function()->get_results().front() ); |
---|
1015 | assert( pointer ); |
---|
1016 | FunctionType *function = dynamic_cast< FunctionType *>( pointer->get_base() ); |
---|
1017 | assert( function ); |
---|
1018 | needs = needsAdapter( function, scopeTyVars ); |
---|
1019 | } // if |
---|
1020 | } // if |
---|
1021 | } // if |
---|
1022 | } // if |
---|
1023 | } // if |
---|
1024 | addrExpr->set_arg( mutateExpression( addrExpr->get_arg() ) ); |
---|
1025 | if ( isPolyType( addrExpr->get_arg()->get_results().front(), scopeTyVars, env ) || needs ) { |
---|
1026 | Expression *ret = addrExpr->get_arg(); |
---|
1027 | delete ret->get_results().front(); |
---|
1028 | ret->get_results().front() = addrExpr->get_results().front()->clone(); |
---|
1029 | addrExpr->set_arg( 0 ); |
---|
1030 | delete addrExpr; |
---|
1031 | return ret; |
---|
1032 | } else { |
---|
1033 | return addrExpr; |
---|
1034 | } // if |
---|
1035 | } |
---|
1036 | |
---|
1037 | /// Wraps a function declaration in a new pointer-to-function variable expression |
---|
1038 | VariableExpr *wrapFunctionDecl( DeclarationWithType *functionDecl ) { |
---|
1039 | // line below cloned from FixFunction.cc |
---|
1040 | ObjectDecl *functionObj = new ObjectDecl( functionDecl->get_name(), functionDecl->get_storageClass(), functionDecl->get_linkage(), 0, |
---|
1041 | new PointerType( Type::Qualifiers(), functionDecl->get_type()->clone() ), 0 ); |
---|
1042 | functionObj->set_mangleName( functionDecl->get_mangleName() ); |
---|
1043 | return new VariableExpr( functionObj ); |
---|
1044 | } |
---|
1045 | |
---|
1046 | Statement * Pass1::mutate( ReturnStmt *returnStmt ) { |
---|
1047 | if ( retval && returnStmt->get_expr() ) { |
---|
1048 | assert( ! returnStmt->get_expr()->get_results().empty() ); |
---|
1049 | // ***** Code Removal ***** After introducing a temporary variable for all return expressions, the following code appears superfluous. |
---|
1050 | // if ( returnStmt->get_expr()->get_results().front()->get_isLvalue() ) { |
---|
1051 | // by this point, a cast expr on a polymorphic return value is redundant |
---|
1052 | while ( CastExpr *castExpr = dynamic_cast< CastExpr *>( returnStmt->get_expr() ) ) { |
---|
1053 | returnStmt->set_expr( castExpr->get_arg() ); |
---|
1054 | returnStmt->get_expr()->set_env( castExpr->get_env() ); |
---|
1055 | castExpr->set_env( 0 ); |
---|
1056 | castExpr->set_arg( 0 ); |
---|
1057 | delete castExpr; |
---|
1058 | } //while |
---|
1059 | |
---|
1060 | // find assignment operator for (polymorphic) return type |
---|
1061 | ApplicationExpr *assignExpr = 0; |
---|
1062 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( retval->get_type() ) ) { |
---|
1063 | // find assignment operator for type variable |
---|
1064 | std::map< std::string, DeclarationWithType *>::const_iterator assignIter = assignOps.find( typeInst->get_name() ); |
---|
1065 | if ( assignIter == assignOps.end() ) { |
---|
1066 | throw SemanticError( "Attempt to return dtype or ftype object in ", returnStmt->get_expr() ); |
---|
1067 | } // if |
---|
1068 | assignExpr = new ApplicationExpr( new VariableExpr( assignIter->second ) ); |
---|
1069 | } else if ( ReferenceToType *refType = dynamic_cast< ReferenceToType *>( retval->get_type() ) ) { |
---|
1070 | // find assignment operator for generic type |
---|
1071 | DeclarationWithType *functionDecl = scopedAssignOps.find( refType ); |
---|
1072 | if ( ! functionDecl ) { |
---|
1073 | throw SemanticError( "Attempt to return dtype or ftype generic object in ", returnStmt->get_expr() ); |
---|
1074 | } |
---|
1075 | |
---|
1076 | // wrap it up in an application expression |
---|
1077 | assignExpr = new ApplicationExpr( wrapFunctionDecl( functionDecl ) ); |
---|
1078 | assignExpr->set_env( env->clone() ); |
---|
1079 | |
---|
1080 | // find each of its needed secondary assignment operators |
---|
1081 | std::list< Expression* > &tyParams = refType->get_parameters(); |
---|
1082 | std::list< TypeDecl* > &forallParams = functionDecl->get_type()->get_forall(); |
---|
1083 | std::list< Expression* >::const_iterator tyIt = tyParams.begin(); |
---|
1084 | std::list< TypeDecl* >::const_iterator forallIt = forallParams.begin(); |
---|
1085 | for ( ; tyIt != tyParams.end() && forallIt != forallParams.end(); ++tyIt, ++forallIt ) { |
---|
1086 | if ( (*forallIt)->get_kind() != TypeDecl::Any ) continue; // skip types with no assign op (ftype/dtype) |
---|
1087 | |
---|
1088 | std::list< DeclarationWithType* > &asserts = (*forallIt)->get_assertions(); |
---|
1089 | assert( ! asserts.empty() && "Type param needs assignment operator assertion" ); |
---|
1090 | DeclarationWithType *actualDecl = asserts.front(); |
---|
1091 | TypeInstType *actualType = isTypeInstAssignment( actualDecl ); |
---|
1092 | assert( actualType && "First assertion of type with assertions should be assignment operator" ); |
---|
1093 | TypeExpr *formalTypeExpr = dynamic_cast< TypeExpr* >( *tyIt ); |
---|
1094 | assert( formalTypeExpr && "type parameters must be type expressions" ); |
---|
1095 | Type *formalType = formalTypeExpr->get_type(); |
---|
1096 | assignExpr->get_env()->add( actualType->get_name(), formalType ); |
---|
1097 | |
---|
1098 | DeclarationWithType *assertAssign = 0; |
---|
1099 | if ( TypeInstType *formalTypeInstType = dynamic_cast< TypeInstType* >( formalType ) ) { |
---|
1100 | std::map< std::string, DeclarationWithType *>::const_iterator assertAssignIt = assignOps.find( formalTypeInstType->get_name() ); |
---|
1101 | if ( assertAssignIt == assignOps.end() ) { |
---|
1102 | throw SemanticError( "No assignment operation found for ", formalTypeInstType ); |
---|
1103 | } |
---|
1104 | assertAssign = assertAssignIt->second; |
---|
1105 | } else { |
---|
1106 | assertAssign = scopedAssignOps.find( formalType ); |
---|
1107 | if ( ! assertAssign ) { |
---|
1108 | throw SemanticError( "No assignment operation found for ", formalType ); |
---|
1109 | } |
---|
1110 | } |
---|
1111 | |
---|
1112 | |
---|
1113 | assignExpr->get_inferParams()[ actualDecl->get_uniqueId() ] |
---|
1114 | = ParamEntry( assertAssign->get_uniqueId(), assertAssign->get_type()->clone(), actualDecl->get_type()->clone(), wrapFunctionDecl( assertAssign ) ); |
---|
1115 | } |
---|
1116 | } |
---|
1117 | assert( assignExpr ); |
---|
1118 | |
---|
1119 | // replace return statement with appropriate assignment to out parameter |
---|
1120 | Expression *retParm = new NameExpr( retval->get_name() ); |
---|
1121 | retParm->get_results().push_back( new PointerType( Type::Qualifiers(), retval->get_type()->clone() ) ); |
---|
1122 | assignExpr->get_args().push_back( retParm ); |
---|
1123 | assignExpr->get_args().push_back( returnStmt->get_expr() ); |
---|
1124 | stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( assignExpr ) ) ); |
---|
1125 | // } else { |
---|
1126 | // useRetval = true; |
---|
1127 | // stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( returnStmt->get_expr() ) ) ); |
---|
1128 | // useRetval = false; |
---|
1129 | // } // if |
---|
1130 | returnStmt->set_expr( 0 ); |
---|
1131 | } else { |
---|
1132 | returnStmt->set_expr( mutateExpression( returnStmt->get_expr() ) ); |
---|
1133 | } // if |
---|
1134 | return returnStmt; |
---|
1135 | } |
---|
1136 | |
---|
1137 | Type * Pass1::mutate( PointerType *pointerType ) { |
---|
1138 | TyVarMap oldtyVars = scopeTyVars; |
---|
1139 | makeTyVarMap( pointerType, scopeTyVars ); |
---|
1140 | |
---|
1141 | Type *ret = Mutator::mutate( pointerType ); |
---|
1142 | |
---|
1143 | scopeTyVars = oldtyVars; |
---|
1144 | return ret; |
---|
1145 | } |
---|
1146 | |
---|
1147 | Type * Pass1::mutate( FunctionType *functionType ) { |
---|
1148 | TyVarMap oldtyVars = scopeTyVars; |
---|
1149 | makeTyVarMap( functionType, scopeTyVars ); |
---|
1150 | |
---|
1151 | Type *ret = Mutator::mutate( functionType ); |
---|
1152 | |
---|
1153 | scopeTyVars = oldtyVars; |
---|
1154 | return ret; |
---|
1155 | } |
---|
1156 | |
---|
1157 | void Pass1::doBeginScope() { |
---|
1158 | // push a copy of the current map |
---|
1159 | adapters.push(adapters.top()); |
---|
1160 | scopedAssignOps.beginScope(); |
---|
1161 | } |
---|
1162 | |
---|
1163 | void Pass1::doEndScope() { |
---|
1164 | adapters.pop(); |
---|
1165 | scopedAssignOps.endScope(); |
---|
1166 | } |
---|
1167 | |
---|
1168 | ////////////////////////////////////////// Pass2 //////////////////////////////////////////////////// |
---|
1169 | |
---|
1170 | void Pass2::addAdapters( FunctionType *functionType ) { |
---|
1171 | std::list< DeclarationWithType *> ¶mList = functionType->get_parameters(); |
---|
1172 | std::list< FunctionType *> functions; |
---|
1173 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
---|
1174 | Type *orig = (*arg)->get_type(); |
---|
1175 | findAndReplaceFunction( orig, functions, scopeTyVars, needsAdapter ); |
---|
1176 | (*arg)->set_type( orig ); |
---|
1177 | } |
---|
1178 | std::set< std::string > adaptersDone; |
---|
1179 | for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) { |
---|
1180 | std::string mangleName = mangleAdapterName( *funType, scopeTyVars ); |
---|
1181 | if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) { |
---|
1182 | std::string adapterName = makeAdapterName( mangleName ); |
---|
1183 | paramList.push_front( new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) ); |
---|
1184 | adaptersDone.insert( adaptersDone.begin(), mangleName ); |
---|
1185 | } |
---|
1186 | } |
---|
1187 | // deleteAll( functions ); |
---|
1188 | } |
---|
1189 | |
---|
1190 | template< typename DeclClass > |
---|
1191 | DeclClass * Pass2::handleDecl( DeclClass *decl, Type *type ) { |
---|
1192 | DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) ); |
---|
1193 | |
---|
1194 | return ret; |
---|
1195 | } |
---|
1196 | |
---|
1197 | DeclarationWithType * Pass2::mutate( FunctionDecl *functionDecl ) { |
---|
1198 | return handleDecl( functionDecl, functionDecl->get_functionType() ); |
---|
1199 | } |
---|
1200 | |
---|
1201 | ObjectDecl * Pass2::mutate( ObjectDecl *objectDecl ) { |
---|
1202 | return handleDecl( objectDecl, objectDecl->get_type() ); |
---|
1203 | } |
---|
1204 | |
---|
1205 | TypeDecl * Pass2::mutate( TypeDecl *typeDecl ) { |
---|
1206 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
1207 | if ( typeDecl->get_base() ) { |
---|
1208 | return handleDecl( typeDecl, typeDecl->get_base() ); |
---|
1209 | } else { |
---|
1210 | return Mutator::mutate( typeDecl ); |
---|
1211 | } |
---|
1212 | } |
---|
1213 | |
---|
1214 | TypedefDecl * Pass2::mutate( TypedefDecl *typedefDecl ) { |
---|
1215 | return handleDecl( typedefDecl, typedefDecl->get_base() ); |
---|
1216 | } |
---|
1217 | |
---|
1218 | Type * Pass2::mutate( PointerType *pointerType ) { |
---|
1219 | TyVarMap oldtyVars = scopeTyVars; |
---|
1220 | makeTyVarMap( pointerType, scopeTyVars ); |
---|
1221 | |
---|
1222 | Type *ret = Mutator::mutate( pointerType ); |
---|
1223 | |
---|
1224 | scopeTyVars = oldtyVars; |
---|
1225 | return ret; |
---|
1226 | } |
---|
1227 | |
---|
1228 | Type *Pass2::mutate( FunctionType *funcType ) { |
---|
1229 | TyVarMap oldtyVars = scopeTyVars; |
---|
1230 | makeTyVarMap( funcType, scopeTyVars ); |
---|
1231 | |
---|
1232 | // move polymorphic return type to parameter list |
---|
1233 | if ( isPolyRet( funcType ) ) { |
---|
1234 | DeclarationWithType *ret = funcType->get_returnVals().front(); |
---|
1235 | ret->set_type( new PointerType( Type::Qualifiers(), ret->get_type() ) ); |
---|
1236 | funcType->get_parameters().push_front( ret ); |
---|
1237 | funcType->get_returnVals().pop_front(); |
---|
1238 | } |
---|
1239 | |
---|
1240 | // add size/align and assertions for type parameters to parameter list |
---|
1241 | std::list< DeclarationWithType *>::iterator last = funcType->get_parameters().begin(); |
---|
1242 | std::list< DeclarationWithType *> inferredParams; |
---|
1243 | ObjectDecl newObj( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), 0 ); |
---|
1244 | ObjectDecl newPtr( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, |
---|
1245 | new PointerType( Type::Qualifiers(), new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ) ), 0 ); |
---|
1246 | // ObjectDecl *newFunPtr = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ); |
---|
1247 | for ( std::list< TypeDecl *>::const_iterator tyParm = funcType->get_forall().begin(); tyParm != funcType->get_forall().end(); ++tyParm ) { |
---|
1248 | ObjectDecl *sizeParm, *alignParm; |
---|
1249 | // add all size and alignment parameters to parameter list |
---|
1250 | if ( (*tyParm)->get_kind() == TypeDecl::Any ) { |
---|
1251 | TypeInstType parmType( Type::Qualifiers(), (*tyParm)->get_name(), *tyParm ); |
---|
1252 | |
---|
1253 | sizeParm = newObj.clone(); |
---|
1254 | sizeParm->set_name( sizeofName( &parmType ) ); |
---|
1255 | last = funcType->get_parameters().insert( last, sizeParm ); |
---|
1256 | ++last; |
---|
1257 | |
---|
1258 | alignParm = newObj.clone(); |
---|
1259 | alignParm->set_name( alignofName( &parmType ) ); |
---|
1260 | last = funcType->get_parameters().insert( last, alignParm ); |
---|
1261 | ++last; |
---|
1262 | } |
---|
1263 | // move all assertions into parameter list |
---|
1264 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyParm)->get_assertions().begin(); assert != (*tyParm)->get_assertions().end(); ++assert ) { |
---|
1265 | // *assert = (*assert)->acceptMutator( *this ); |
---|
1266 | inferredParams.push_back( *assert ); |
---|
1267 | } |
---|
1268 | (*tyParm)->get_assertions().clear(); |
---|
1269 | } |
---|
1270 | |
---|
1271 | // add size/align for generic parameter types to parameter list |
---|
1272 | std::set< std::string > seenTypes; // sizeofName for generic types we've seen |
---|
1273 | for ( std::list< DeclarationWithType* >::const_iterator fnParm = last; fnParm != funcType->get_parameters().end(); ++fnParm ) { |
---|
1274 | Type *polyBase = hasPolyBase( (*fnParm)->get_type(), scopeTyVars ); |
---|
1275 | if ( polyBase && ! dynamic_cast< TypeInstType* >( polyBase ) ) { |
---|
1276 | std::string sizeName = sizeofName( polyBase ); |
---|
1277 | if ( seenTypes.count( sizeName ) ) continue; |
---|
1278 | |
---|
1279 | ObjectDecl *sizeParm, *alignParm, *offsetParm; |
---|
1280 | sizeParm = newObj.clone(); |
---|
1281 | sizeParm->set_name( sizeName ); |
---|
1282 | last = funcType->get_parameters().insert( last, sizeParm ); |
---|
1283 | ++last; |
---|
1284 | |
---|
1285 | alignParm = newObj.clone(); |
---|
1286 | alignParm->set_name( alignofName( polyBase ) ); |
---|
1287 | last = funcType->get_parameters().insert( last, alignParm ); |
---|
1288 | ++last; |
---|
1289 | |
---|
1290 | if ( dynamic_cast< StructInstType* >( polyBase ) ) { |
---|
1291 | offsetParm = newPtr.clone(); |
---|
1292 | offsetParm->set_name( offsetofName( polyBase ) ); |
---|
1293 | last = funcType->get_parameters().insert( last, offsetParm ); |
---|
1294 | ++last; |
---|
1295 | } |
---|
1296 | |
---|
1297 | seenTypes.insert( sizeName ); |
---|
1298 | } |
---|
1299 | } |
---|
1300 | |
---|
1301 | // splice assertion parameters into parameter list |
---|
1302 | funcType->get_parameters().splice( last, inferredParams ); |
---|
1303 | addAdapters( funcType ); |
---|
1304 | mutateAll( funcType->get_returnVals(), *this ); |
---|
1305 | mutateAll( funcType->get_parameters(), *this ); |
---|
1306 | |
---|
1307 | scopeTyVars = oldtyVars; |
---|
1308 | return funcType; |
---|
1309 | } |
---|
1310 | |
---|
1311 | ////////////////////////////////////////// MemberExprFixer //////////////////////////////////////////////////// |
---|
1312 | |
---|
1313 | template< typename DeclClass > |
---|
1314 | DeclClass * MemberExprFixer::handleDecl( DeclClass *decl, Type *type ) { |
---|
1315 | TyVarMap oldtyVars = scopeTyVars; |
---|
1316 | makeTyVarMap( type, scopeTyVars ); |
---|
1317 | |
---|
1318 | DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) ); |
---|
1319 | |
---|
1320 | scopeTyVars = oldtyVars; |
---|
1321 | return ret; |
---|
1322 | } |
---|
1323 | |
---|
1324 | ObjectDecl * MemberExprFixer::mutate( ObjectDecl *objectDecl ) { |
---|
1325 | return handleDecl( objectDecl, objectDecl->get_type() ); |
---|
1326 | } |
---|
1327 | |
---|
1328 | DeclarationWithType * MemberExprFixer::mutate( FunctionDecl *functionDecl ) { |
---|
1329 | return handleDecl( functionDecl, functionDecl->get_functionType() ); |
---|
1330 | } |
---|
1331 | |
---|
1332 | TypedefDecl * MemberExprFixer::mutate( TypedefDecl *typedefDecl ) { |
---|
1333 | return handleDecl( typedefDecl, typedefDecl->get_base() ); |
---|
1334 | } |
---|
1335 | |
---|
1336 | TypeDecl * MemberExprFixer::mutate( TypeDecl *typeDecl ) { |
---|
1337 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
1338 | return Mutator::mutate( typeDecl ); |
---|
1339 | } |
---|
1340 | |
---|
1341 | Type * MemberExprFixer::mutate( PointerType *pointerType ) { |
---|
1342 | TyVarMap oldtyVars = scopeTyVars; |
---|
1343 | makeTyVarMap( pointerType, scopeTyVars ); |
---|
1344 | |
---|
1345 | Type *ret = Mutator::mutate( pointerType ); |
---|
1346 | |
---|
1347 | scopeTyVars = oldtyVars; |
---|
1348 | return ret; |
---|
1349 | } |
---|
1350 | |
---|
1351 | Type * MemberExprFixer::mutate( FunctionType *functionType ) { |
---|
1352 | TyVarMap oldtyVars = scopeTyVars; |
---|
1353 | makeTyVarMap( functionType, scopeTyVars ); |
---|
1354 | |
---|
1355 | Type *ret = Mutator::mutate( functionType ); |
---|
1356 | |
---|
1357 | scopeTyVars = oldtyVars; |
---|
1358 | return ret; |
---|
1359 | } |
---|
1360 | |
---|
1361 | Statement *MemberExprFixer::mutate( DeclStmt *declStmt ) { |
---|
1362 | if ( ObjectDecl *objectDecl = dynamic_cast< ObjectDecl *>( declStmt->get_decl() ) ) { |
---|
1363 | if ( isPolyType( objectDecl->get_type(), scopeTyVars ) ) { |
---|
1364 | // change initialization of a polymorphic value object |
---|
1365 | // to allocate storage with alloca |
---|
1366 | Type *declType = objectDecl->get_type(); |
---|
1367 | UntypedExpr *alloc = new UntypedExpr( new NameExpr( "__builtin_alloca" ) ); |
---|
1368 | alloc->get_args().push_back( new NameExpr( sizeofName( declType ) ) ); |
---|
1369 | |
---|
1370 | delete objectDecl->get_init(); |
---|
1371 | |
---|
1372 | std::list<Expression*> designators; |
---|
1373 | objectDecl->set_init( new SingleInit( alloc, designators ) ); |
---|
1374 | } |
---|
1375 | } |
---|
1376 | return Mutator::mutate( declStmt ); |
---|
1377 | } |
---|
1378 | |
---|
1379 | /// Finds the member in the base list that matches the given declaration; returns its index, or -1 if not present |
---|
1380 | long findMember( DeclarationWithType *memberDecl, std::list< Declaration* > &baseDecls ) { |
---|
1381 | long i = 0; |
---|
1382 | for(std::list< Declaration* >::const_iterator decl = baseDecls.begin(); decl != baseDecls.end(); ++decl, ++i ) { |
---|
1383 | if ( memberDecl->get_name() != (*decl)->get_name() ) continue; |
---|
1384 | |
---|
1385 | if ( DeclarationWithType *declWithType = dynamic_cast< DeclarationWithType* >( *decl ) ) { |
---|
1386 | if ( memberDecl->get_mangleName().empty() || declWithType->get_mangleName().empty() |
---|
1387 | || memberDecl->get_mangleName() == declWithType->get_mangleName() ) return i; |
---|
1388 | else continue; |
---|
1389 | } else return i; |
---|
1390 | } |
---|
1391 | return -1; |
---|
1392 | } |
---|
1393 | |
---|
1394 | /// Returns an index expression into the offset array for a type |
---|
1395 | Expression *makeOffsetIndex( Type *objectType, long i ) { |
---|
1396 | std::stringstream offset_namer; |
---|
1397 | offset_namer << i; |
---|
1398 | ConstantExpr *fieldIndex = new ConstantExpr( Constant( new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), offset_namer.str() ) ); |
---|
1399 | UntypedExpr *fieldOffset = new UntypedExpr( new NameExpr( "?[?]" ) ); |
---|
1400 | fieldOffset->get_args().push_back( new NameExpr( offsetofName( objectType ) ) ); |
---|
1401 | fieldOffset->get_args().push_back( fieldIndex ); |
---|
1402 | return fieldOffset; |
---|
1403 | } |
---|
1404 | |
---|
1405 | /// Returns an expression dereferenced n times |
---|
1406 | Expression *makeDerefdVar( Expression *derefdVar, long n ) { |
---|
1407 | for ( int i = 1; i < n; ++i ) { |
---|
1408 | UntypedExpr *derefExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
1409 | derefExpr->get_args().push_back( derefdVar ); |
---|
1410 | derefdVar = derefExpr; |
---|
1411 | } |
---|
1412 | return derefdVar; |
---|
1413 | } |
---|
1414 | |
---|
1415 | Expression *MemberExprFixer::mutate( MemberExpr *memberExpr ) { |
---|
1416 | // mutate, exiting early if no longer MemberExpr |
---|
1417 | Expression *expr = Mutator::mutate( memberExpr ); |
---|
1418 | memberExpr = dynamic_cast< MemberExpr* >( expr ); |
---|
1419 | if ( ! memberExpr ) return expr; |
---|
1420 | |
---|
1421 | // get declaration for base struct, exiting early if not found |
---|
1422 | int varDepth; |
---|
1423 | VariableExpr *varExpr = getBaseVar( memberExpr->get_aggregate(), &varDepth ); |
---|
1424 | if ( ! varExpr ) return memberExpr; |
---|
1425 | ObjectDecl *objectDecl = dynamic_cast< ObjectDecl* >( varExpr->get_var() ); |
---|
1426 | if ( ! objectDecl ) return memberExpr; |
---|
1427 | |
---|
1428 | // only mutate member expressions for polymorphic types |
---|
1429 | int tyDepth; |
---|
1430 | Type *objectType = hasPolyBase( objectDecl->get_type(), scopeTyVars, &tyDepth ); |
---|
1431 | if ( ! objectType ) return memberExpr; |
---|
1432 | |
---|
1433 | Expression *newMemberExpr = 0; |
---|
1434 | if ( StructInstType *structType = dynamic_cast< StructInstType* >( objectType ) ) { |
---|
1435 | // look up offset index |
---|
1436 | long i = findMember( memberExpr->get_member(), structType->get_baseStruct()->get_members() ); |
---|
1437 | if ( i == -1 ) return memberExpr; |
---|
1438 | |
---|
1439 | // replace member expression with pointer to base plus offset |
---|
1440 | UntypedExpr *fieldLoc = new UntypedExpr( new NameExpr( "?+?" ) ); |
---|
1441 | fieldLoc->get_args().push_back( makeDerefdVar( varExpr->clone(), varDepth ) ); |
---|
1442 | fieldLoc->get_args().push_back( makeOffsetIndex( objectType, i ) ); |
---|
1443 | newMemberExpr = fieldLoc; |
---|
1444 | } else if ( dynamic_cast< UnionInstType* >( objectType ) ) { |
---|
1445 | // union members are all at offset zero, so build appropriately-dereferenced variable |
---|
1446 | newMemberExpr = makeDerefdVar( varExpr->clone(), varDepth ); |
---|
1447 | } else return memberExpr; |
---|
1448 | assert( newMemberExpr ); |
---|
1449 | |
---|
1450 | Type *memberType = memberExpr->get_member()->get_type(); |
---|
1451 | if ( ! isPolyType( memberType, scopeTyVars ) ) { |
---|
1452 | // 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 |
---|
1453 | CastExpr *ptrCastExpr = new CastExpr( newMemberExpr, new PointerType( Type::Qualifiers(), memberType->clone() ) ); |
---|
1454 | UntypedExpr *derefExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
1455 | derefExpr->get_args().push_back( ptrCastExpr ); |
---|
1456 | newMemberExpr = derefExpr; |
---|
1457 | } |
---|
1458 | |
---|
1459 | delete memberExpr; |
---|
1460 | return newMemberExpr; |
---|
1461 | } |
---|
1462 | |
---|
1463 | Expression *MemberExprFixer::mutate( OffsetofExpr *offsetofExpr ) { |
---|
1464 | // mutate, exiting early if no longer OffsetofExpr |
---|
1465 | Expression *expr = Mutator::mutate( offsetofExpr ); |
---|
1466 | offsetofExpr = dynamic_cast< OffsetofExpr* >( expr ); |
---|
1467 | if ( ! offsetofExpr ) return expr; |
---|
1468 | |
---|
1469 | // only mutate expressions for polymorphic structs/unions |
---|
1470 | Type *ty = isPolyType( offsetofExpr->get_type(), scopeTyVars ); |
---|
1471 | if ( ! ty ) return offsetofExpr; |
---|
1472 | |
---|
1473 | if ( StructInstType *structType = dynamic_cast< StructInstType* >( ty ) ) { |
---|
1474 | // replace offsetof expression by index into offset array |
---|
1475 | long i = findMember( offsetofExpr->get_member(), structType->get_baseStruct()->get_members() ); |
---|
1476 | if ( i == -1 ) return offsetofExpr; |
---|
1477 | |
---|
1478 | Expression *offsetInd = makeOffsetIndex( ty, i ); |
---|
1479 | delete offsetofExpr; |
---|
1480 | return offsetInd; |
---|
1481 | } else if ( dynamic_cast< UnionInstType* >( ty ) ) { |
---|
1482 | // all union members are at offset zero |
---|
1483 | delete offsetofExpr; |
---|
1484 | return new ConstantExpr( Constant( new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), std::string("0") ) ); |
---|
1485 | } else return offsetofExpr; |
---|
1486 | } |
---|
1487 | |
---|
1488 | ////////////////////////////////////////// Pass3 //////////////////////////////////////////////////// |
---|
1489 | |
---|
1490 | template< typename DeclClass > |
---|
1491 | DeclClass * Pass3::handleDecl( DeclClass *decl, Type *type ) { |
---|
1492 | TyVarMap oldtyVars = scopeTyVars; |
---|
1493 | makeTyVarMap( type, scopeTyVars ); |
---|
1494 | |
---|
1495 | DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) ); |
---|
1496 | ScrubTyVars::scrub( decl, scopeTyVars ); |
---|
1497 | |
---|
1498 | scopeTyVars = oldtyVars; |
---|
1499 | return ret; |
---|
1500 | } |
---|
1501 | |
---|
1502 | ObjectDecl * Pass3::mutate( ObjectDecl *objectDecl ) { |
---|
1503 | return handleDecl( objectDecl, objectDecl->get_type() ); |
---|
1504 | } |
---|
1505 | |
---|
1506 | DeclarationWithType * Pass3::mutate( FunctionDecl *functionDecl ) { |
---|
1507 | return handleDecl( functionDecl, functionDecl->get_functionType() ); |
---|
1508 | } |
---|
1509 | |
---|
1510 | TypedefDecl * Pass3::mutate( TypedefDecl *typedefDecl ) { |
---|
1511 | return handleDecl( typedefDecl, typedefDecl->get_base() ); |
---|
1512 | } |
---|
1513 | |
---|
1514 | TypeDecl * Pass3::mutate( TypeDecl *typeDecl ) { |
---|
1515 | // Initializer *init = 0; |
---|
1516 | // std::list< Expression *> designators; |
---|
1517 | // scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
1518 | // if ( typeDecl->get_base() ) { |
---|
1519 | // init = new SimpleInit( new SizeofExpr( handleDecl( typeDecl, typeDecl->get_base() ) ), designators ); |
---|
1520 | // } |
---|
1521 | // return new ObjectDecl( typeDecl->get_name(), Declaration::Extern, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::UnsignedInt ), init ); |
---|
1522 | |
---|
1523 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
1524 | return Mutator::mutate( typeDecl ); |
---|
1525 | } |
---|
1526 | |
---|
1527 | Type * Pass3::mutate( PointerType *pointerType ) { |
---|
1528 | TyVarMap oldtyVars = scopeTyVars; |
---|
1529 | makeTyVarMap( pointerType, scopeTyVars ); |
---|
1530 | |
---|
1531 | Type *ret = Mutator::mutate( pointerType ); |
---|
1532 | |
---|
1533 | scopeTyVars = oldtyVars; |
---|
1534 | return ret; |
---|
1535 | } |
---|
1536 | |
---|
1537 | Type * Pass3::mutate( FunctionType *functionType ) { |
---|
1538 | TyVarMap oldtyVars = scopeTyVars; |
---|
1539 | makeTyVarMap( functionType, scopeTyVars ); |
---|
1540 | |
---|
1541 | Type *ret = Mutator::mutate( functionType ); |
---|
1542 | |
---|
1543 | scopeTyVars = oldtyVars; |
---|
1544 | return ret; |
---|
1545 | } |
---|
1546 | } // anonymous namespace |
---|
1547 | } // namespace GenPoly |
---|
1548 | |
---|
1549 | // Local Variables: // |
---|
1550 | // tab-width: 4 // |
---|
1551 | // mode: c++ // |
---|
1552 | // compile-command: "make install" // |
---|
1553 | // End: // |
---|