[51587aa] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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[ae63a18] | 7 | // Box.cc -- |
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[51587aa] | 8 | // |
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| 9 | // Author : Richard C. Bilson |
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| 10 | // Created On : Mon May 18 07:44:20 2015 |
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[bdf1954] | 11 | // Last Modified By : Rob Schluntz |
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[dc2e7e0] | 12 | // Last Modified On : Mon Apr 18 13:22:15 2016 |
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[d63eeb0] | 13 | // Update Count : 295 |
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[51587aa] | 14 | // |
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[51b7345] | 15 | |
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[4e284ea6] | 16 | #include <algorithm> |
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| 17 | #include <iterator> |
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| 18 | #include <list> |
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| 19 | #include <map> |
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[51b7345] | 20 | #include <set> |
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[b1a6d6b] | 21 | #include <stack> |
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[51b7345] | 22 | #include <string> |
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[4e284ea6] | 23 | #include <utility> |
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| 24 | #include <vector> |
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[51b7345] | 25 | #include <cassert> |
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| 26 | |
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| 27 | #include "Box.h" |
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[9d7b3ea] | 28 | #include "DeclMutator.h" |
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[51b7345] | 29 | #include "PolyMutator.h" |
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| 30 | #include "FindFunction.h" |
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[6635c74] | 31 | #include "ScopedMap.h" |
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[89173242] | 32 | #include "ScopedSet.h" |
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[51b7345] | 33 | #include "ScrubTyVars.h" |
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| 34 | |
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[68cd1ce] | 35 | #include "Parser/ParseNode.h" |
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| 36 | |
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[cdec5af] | 37 | #include "SynTree/Constant.h" |
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[4e284ea6] | 38 | #include "SynTree/Declaration.h" |
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[51b7345] | 39 | #include "SynTree/Expression.h" |
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| 40 | #include "SynTree/Initializer.h" |
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| 41 | #include "SynTree/Mutator.h" |
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[4e284ea6] | 42 | #include "SynTree/Statement.h" |
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| 43 | #include "SynTree/Type.h" |
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| 44 | #include "SynTree/TypeSubstitution.h" |
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[68cd1ce] | 45 | |
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[51b7345] | 46 | #include "ResolvExpr/TypeEnvironment.h" |
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[dc12481] | 47 | #include "ResolvExpr/TypeMap.h" |
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| 48 | #include "ResolvExpr/typeops.h" |
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[68cd1ce] | 49 | |
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[4e284ea6] | 50 | #include "SymTab/Indexer.h" |
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[51b7345] | 51 | #include "SymTab/Mangler.h" |
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| 52 | |
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[d3b7937] | 53 | #include "Common/SemanticError.h" |
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| 54 | #include "Common/UniqueName.h" |
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| 55 | #include "Common/utility.h" |
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[51b7345] | 56 | |
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| 57 | #include <ext/functional> // temporary |
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| 58 | |
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| 59 | namespace GenPoly { |
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[01aeade] | 60 | namespace { |
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| 61 | const std::list<Label> noLabels; |
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| 62 | |
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[e56cfdb0] | 63 | FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars ); |
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| 64 | |
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[d1caa6c] | 65 | /// Abstracts type equality for a list of parameter types |
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| 66 | struct TypeList { |
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| 67 | TypeList() : params() {} |
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| 68 | TypeList( const std::list< Type* > &_params ) : params() { cloneAll(_params, params); } |
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| 69 | TypeList( std::list< Type* > &&_params ) : params( _params ) {} |
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[4e284ea6] | 70 | |
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[d1caa6c] | 71 | TypeList( const TypeList &that ) : params() { cloneAll(that.params, params); } |
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| 72 | TypeList( TypeList &&that ) : params( std::move( that.params ) ) {} |
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[4e284ea6] | 73 | |
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| 74 | /// Extracts types from a list of TypeExpr* |
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[d1caa6c] | 75 | TypeList( const std::list< TypeExpr* >& _params ) : params() { |
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[4e284ea6] | 76 | for ( std::list< TypeExpr* >::const_iterator param = _params.begin(); param != _params.end(); ++param ) { |
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| 77 | params.push_back( (*param)->get_type()->clone() ); |
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| 78 | } |
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| 79 | } |
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| 80 | |
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[d1caa6c] | 81 | TypeList& operator= ( const TypeList &that ) { |
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[4e284ea6] | 82 | deleteAll( params ); |
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| 83 | |
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[d1caa6c] | 84 | params.clear(); |
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[4e284ea6] | 85 | cloneAll( that.params, params ); |
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| 86 | |
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| 87 | return *this; |
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| 88 | } |
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| 89 | |
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[d1caa6c] | 90 | TypeList& operator= ( TypeList &&that ) { |
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| 91 | deleteAll( params ); |
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[4e284ea6] | 92 | |
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[d1caa6c] | 93 | params = std::move( that.params ); |
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[4e284ea6] | 94 | |
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[d1caa6c] | 95 | return *this; |
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| 96 | } |
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| 97 | |
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| 98 | ~TypeList() { deleteAll( params ); } |
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| 99 | |
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| 100 | bool operator== ( const TypeList& that ) const { |
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[4e284ea6] | 101 | if ( params.size() != that.params.size() ) return false; |
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[d1caa6c] | 102 | |
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| 103 | SymTab::Indexer dummy; |
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[4e284ea6] | 104 | for ( std::list< Type* >::const_iterator it = params.begin(), jt = that.params.begin(); it != params.end(); ++it, ++jt ) { |
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| 105 | if ( ! ResolvExpr::typesCompatible( *it, *jt, dummy ) ) return false; |
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| 106 | } |
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| 107 | return true; |
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| 108 | } |
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| 109 | |
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| 110 | std::list< Type* > params; ///< Instantiation parameters |
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| 111 | }; |
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| 112 | |
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[d1caa6c] | 113 | /// Maps a key and a TypeList to the some value, accounting for scope |
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| 114 | template< typename Key, typename Value > |
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[4e284ea6] | 115 | class InstantiationMap { |
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[d1caa6c] | 116 | /// Wraps value for a specific (Key, TypeList) combination |
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| 117 | typedef std::pair< TypeList, Value* > Instantiation; |
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[0531b5d] | 118 | /// List of TypeLists paired with their appropriate values |
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| 119 | typedef std::vector< Instantiation > ValueList; |
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| 120 | /// Underlying map type; maps keys to a linear list of corresponding TypeLists and values |
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[89173242] | 121 | typedef ScopedMap< Key*, ValueList > InnerMap; |
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[4e284ea6] | 122 | |
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[0531b5d] | 123 | InnerMap instantiations; ///< instantiations |
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[4e284ea6] | 124 | |
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| 125 | public: |
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| 126 | /// Starts a new scope |
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[0531b5d] | 127 | void beginScope() { instantiations.beginScope(); } |
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[4e284ea6] | 128 | |
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| 129 | /// Ends a scope |
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[0531b5d] | 130 | void endScope() { instantiations.endScope(); } |
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[4e284ea6] | 131 | |
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[d1caa6c] | 132 | /// Gets the value for the (key, typeList) pair, returns NULL on none such. |
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[0531b5d] | 133 | Value *lookup( Key *key, const std::list< TypeExpr* >& params ) const { |
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| 134 | TypeList typeList( params ); |
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[4e284ea6] | 135 | |
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[0531b5d] | 136 | // scan scopes for matches to the key |
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| 137 | for ( typename InnerMap::const_iterator insts = instantiations.find( key ); insts != instantiations.end(); insts = instantiations.findNext( insts, key ) ) { |
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| 138 | for ( typename ValueList::const_reverse_iterator inst = insts->second.rbegin(); inst != insts->second.rend(); ++inst ) { |
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[d1caa6c] | 139 | if ( inst->first == typeList ) return inst->second; |
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[4e284ea6] | 140 | } |
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| 141 | } |
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[0531b5d] | 142 | // no matching instantiations found |
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[4e284ea6] | 143 | return 0; |
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| 144 | } |
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| 145 | |
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[d1caa6c] | 146 | /// Adds a value for a (key, typeList) pair to the current scope |
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| 147 | void insert( Key *key, const std::list< TypeExpr* > ¶ms, Value *value ) { |
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[0531b5d] | 148 | instantiations[ key ].push_back( Instantiation( TypeList( params ), value ) ); |
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[4e284ea6] | 149 | } |
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| 150 | }; |
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| 151 | |
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[9d7b3ea] | 152 | /// Adds layout-generation functions to polymorphic types |
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| 153 | class LayoutFunctionBuilder : public DeclMutator { |
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| 154 | unsigned int functionNesting; // current level of nested functions |
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| 155 | public: |
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| 156 | LayoutFunctionBuilder() : functionNesting( 0 ) {} |
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| 157 | |
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| 158 | virtual DeclarationWithType *mutate( FunctionDecl *functionDecl ); |
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| 159 | virtual Declaration *mutate( StructDecl *structDecl ); |
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| 160 | virtual Declaration *mutate( UnionDecl *unionDecl ); |
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| 161 | }; |
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[70a06f6] | 162 | |
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[f8b961b] | 163 | /// 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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[01aeade] | 164 | class Pass1 : public PolyMutator { |
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| 165 | public: |
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| 166 | Pass1(); |
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| 167 | virtual Expression *mutate( ApplicationExpr *appExpr ); |
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| 168 | virtual Expression *mutate( AddressExpr *addrExpr ); |
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| 169 | virtual Expression *mutate( UntypedExpr *expr ); |
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| 170 | virtual DeclarationWithType* mutate( FunctionDecl *functionDecl ); |
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| 171 | virtual TypeDecl *mutate( TypeDecl *typeDecl ); |
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| 172 | virtual Expression *mutate( CommaExpr *commaExpr ); |
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| 173 | virtual Expression *mutate( ConditionalExpr *condExpr ); |
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[cf16f94] | 174 | virtual Statement * mutate( ReturnStmt *returnStmt ); |
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[01aeade] | 175 | virtual Type *mutate( PointerType *pointerType ); |
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[cf16f94] | 176 | virtual Type * mutate( FunctionType *functionType ); |
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[ae63a18] | 177 | |
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[01aeade] | 178 | virtual void doBeginScope(); |
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| 179 | virtual void doEndScope(); |
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| 180 | private: |
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[5c52b06] | 181 | /// Pass the extra type parameters from polymorphic generic arguments or return types into a function application |
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| 182 | void passArgTypeVars( ApplicationExpr *appExpr, Type *parmType, Type *argBaseType, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars, std::set< std::string > &seenTypes ); |
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[05d47278] | 183 | /// passes extra type parameters into a polymorphic function application |
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[5c52b06] | 184 | void passTypeVars( ApplicationExpr *appExpr, ReferenceToType *polyRetType, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ); |
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[48ca586] | 185 | /// wraps a function application with a new temporary for the out-parameter return value |
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[01aeade] | 186 | Expression *addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ); |
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[48ca586] | 187 | /// Replaces all the type parameters of a generic type with their concrete equivalents under the current environment |
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| 188 | void replaceParametersWithConcrete( ApplicationExpr *appExpr, std::list< Expression* >& params ); |
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| 189 | /// Replaces a polymorphic type with its concrete equivalant under the current environment (returns itself if concrete). |
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| 190 | /// If `doClone` is set to false, will not clone interior types |
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| 191 | Type *replaceWithConcrete( ApplicationExpr *appExpr, Type *type, bool doClone = true ); |
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| 192 | /// wraps a function application returning a polymorphic type with a new temporary for the out-parameter return value |
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| 193 | Expression *addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, ReferenceToType *polyType, std::list< Expression *>::iterator &arg ); |
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[01aeade] | 194 | Expression *applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ); |
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| 195 | void boxParam( Type *formal, Expression *&arg, const TyVarMap &exprTyVars ); |
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| 196 | void boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ); |
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| 197 | void addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ); |
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[1194734] | 198 | /// Stores assignment operators from assertion list in local map of assignment operations |
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[01aeade] | 199 | void findAssignOps( const std::list< TypeDecl *> &forall ); |
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| 200 | void passAdapters( ApplicationExpr *appExpr, FunctionType *functionType, const TyVarMap &exprTyVars ); |
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| 201 | FunctionDecl *makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ); |
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[05d47278] | 202 | /// Replaces intrinsic operator functions with their arithmetic desugaring |
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[01aeade] | 203 | Expression *handleIntrinsics( ApplicationExpr *appExpr ); |
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[05d47278] | 204 | /// Inserts a new temporary variable into the current scope with an auto-generated name |
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[01aeade] | 205 | ObjectDecl *makeTemporary( Type *type ); |
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[c29d9ce] | 206 | |
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[63c0dbf] | 207 | ScopedMap< std::string, DeclarationWithType *> assignOps; ///< Currently known type variable assignment operators |
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[89173242] | 208 | ResolvExpr::TypeMap< DeclarationWithType > scopedAssignOps; ///< Currently known assignment operators |
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| 209 | ScopedMap< std::string, DeclarationWithType* > adapters; ///< Set of adapter functions in the current scope |
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[70a06f6] | 210 | |
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[01aeade] | 211 | DeclarationWithType *retval; |
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| 212 | bool useRetval; |
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| 213 | UniqueName tempNamer; |
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| 214 | }; |
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| 215 | |
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[89173242] | 216 | /// * Moves polymorphic returns in function types to pointer-type parameters |
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| 217 | /// * adds type size and assertion parameters to parameter lists |
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[01aeade] | 218 | class Pass2 : public PolyMutator { |
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| 219 | public: |
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| 220 | template< typename DeclClass > |
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| 221 | DeclClass *handleDecl( DeclClass *decl, Type *type ); |
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| 222 | virtual DeclarationWithType *mutate( FunctionDecl *functionDecl ); |
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| 223 | virtual ObjectDecl *mutate( ObjectDecl *objectDecl ); |
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| 224 | virtual TypeDecl *mutate( TypeDecl *typeDecl ); |
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| 225 | virtual TypedefDecl *mutate( TypedefDecl *typedefDecl ); |
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| 226 | virtual Type *mutate( PointerType *pointerType ); |
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| 227 | virtual Type *mutate( FunctionType *funcType ); |
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[70a06f6] | 228 | |
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[01aeade] | 229 | private: |
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| 230 | void addAdapters( FunctionType *functionType ); |
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[ae63a18] | 231 | |
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[01aeade] | 232 | std::map< UniqueId, std::string > adapterName; |
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| 233 | }; |
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| 234 | |
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[4e284ea6] | 235 | /// Mutator pass that replaces concrete instantiations of generic types with actual struct declarations, scoped appropriately |
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| 236 | class GenericInstantiator : public DeclMutator { |
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| 237 | /// Map of (generic type, parameter list) pairs to concrete type instantiations |
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[d1caa6c] | 238 | InstantiationMap< AggregateDecl, AggregateDecl > instantiations; |
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[4e284ea6] | 239 | /// Namer for concrete types |
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| 240 | UniqueName typeNamer; |
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| 241 | |
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| 242 | public: |
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| 243 | GenericInstantiator() : DeclMutator(), instantiations(), typeNamer("_conc_") {} |
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| 244 | |
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| 245 | virtual Type* mutate( StructInstType *inst ); |
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| 246 | virtual Type* mutate( UnionInstType *inst ); |
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| 247 | |
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| 248 | // virtual Expression* mutate( MemberExpr *memberExpr ); |
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| 249 | |
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| 250 | virtual void doBeginScope(); |
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| 251 | virtual void doEndScope(); |
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| 252 | private: |
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| 253 | /// Wrap instantiation lookup for structs |
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| 254 | StructDecl* lookup( StructInstType *inst, const std::list< TypeExpr* > &typeSubs ) { return (StructDecl*)instantiations.lookup( inst->get_baseStruct(), typeSubs ); } |
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| 255 | /// Wrap instantiation lookup for unions |
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| 256 | UnionDecl* lookup( UnionInstType *inst, const std::list< TypeExpr* > &typeSubs ) { return (UnionDecl*)instantiations.lookup( inst->get_baseUnion(), typeSubs ); } |
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| 257 | /// Wrap instantiation insertion for structs |
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| 258 | void insert( StructInstType *inst, const std::list< TypeExpr* > &typeSubs, StructDecl *decl ) { instantiations.insert( inst->get_baseStruct(), typeSubs, decl ); } |
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| 259 | /// Wrap instantiation insertion for unions |
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| 260 | void insert( UnionInstType *inst, const std::list< TypeExpr* > &typeSubs, UnionDecl *decl ) { instantiations.insert( inst->get_baseUnion(), typeSubs, decl ); } |
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| 261 | }; |
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| 262 | |
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[8a34677] | 263 | /// Replaces member and size/align/offsetof expressions on polymorphic generic types with calculated expressions. |
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| 264 | /// * Replaces member expressions for polymorphic types with calculated add-field-offset-and-dereference |
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| 265 | /// * Calculates polymorphic offsetof expressions from offset array |
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| 266 | /// * Inserts dynamic calculation of polymorphic type layouts where needed |
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| 267 | class PolyGenericCalculator : public PolyMutator { |
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| 268 | public: |
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[05d47278] | 269 | template< typename DeclClass > |
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| 270 | DeclClass *handleDecl( DeclClass *decl, Type *type ); |
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| 271 | virtual DeclarationWithType *mutate( FunctionDecl *functionDecl ); |
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| 272 | virtual ObjectDecl *mutate( ObjectDecl *objectDecl ); |
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| 273 | virtual TypedefDecl *mutate( TypedefDecl *objectDecl ); |
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| 274 | virtual TypeDecl *mutate( TypeDecl *objectDecl ); |
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| 275 | virtual Statement *mutate( DeclStmt *declStmt ); |
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| 276 | virtual Type *mutate( PointerType *pointerType ); |
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| 277 | virtual Type *mutate( FunctionType *funcType ); |
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| 278 | virtual Expression *mutate( MemberExpr *memberExpr ); |
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[8a34677] | 279 | virtual Expression *mutate( SizeofExpr *sizeofExpr ); |
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| 280 | virtual Expression *mutate( AlignofExpr *alignofExpr ); |
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[2a4b088] | 281 | virtual Expression *mutate( OffsetofExpr *offsetofExpr ); |
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[8a34677] | 282 | virtual Expression *mutate( OffsetPackExpr *offsetPackExpr ); |
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| 283 | |
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| 284 | virtual void doBeginScope(); |
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| 285 | virtual void doEndScope(); |
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| 286 | |
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| 287 | private: |
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| 288 | /// Makes a new variable in the current scope with the given name, type & optional initializer |
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| 289 | ObjectDecl *makeVar( const std::string &name, Type *type, Initializer *init = 0 ); |
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| 290 | /// returns true if the type has a dynamic layout; such a layout will be stored in appropriately-named local variables when the function returns |
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| 291 | bool findGeneric( Type *ty ); |
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| 292 | /// adds type parameters to the layout call; will generate the appropriate parameters if needed |
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| 293 | void addOtypeParamsToLayoutCall( UntypedExpr *layoutCall, const std::list< Type* > &otypeParams ); |
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[aa19ccf] | 294 | |
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| 295 | /// Enters a new scope for type-variables, adding the type variables from ty |
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| 296 | void beginTypeScope( Type *ty ); |
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| 297 | /// Exits the type-variable scope |
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| 298 | void endTypeScope(); |
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[70a06f6] | 299 | |
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[8a34677] | 300 | ScopedSet< std::string > knownLayouts; ///< Set of generic type layouts known in the current scope, indexed by sizeofName |
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| 301 | ScopedSet< std::string > knownOffsets; ///< Set of non-generic types for which the offset array exists in the current scope, indexed by offsetofName |
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[05d47278] | 302 | }; |
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[b4cd03b7] | 303 | |
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[f8b961b] | 304 | /// 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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[01aeade] | 305 | class Pass3 : public PolyMutator { |
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| 306 | public: |
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| 307 | template< typename DeclClass > |
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| 308 | DeclClass *handleDecl( DeclClass *decl, Type *type ); |
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| 309 | virtual DeclarationWithType *mutate( FunctionDecl *functionDecl ); |
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| 310 | virtual ObjectDecl *mutate( ObjectDecl *objectDecl ); |
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| 311 | virtual TypedefDecl *mutate( TypedefDecl *objectDecl ); |
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| 312 | virtual TypeDecl *mutate( TypeDecl *objectDecl ); |
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| 313 | virtual Type *mutate( PointerType *pointerType ); |
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| 314 | virtual Type *mutate( FunctionType *funcType ); |
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| 315 | private: |
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| 316 | }; |
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| 317 | |
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| 318 | } // anonymous namespace |
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| 319 | |
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[05d47278] | 320 | /// version of mutateAll with special handling for translation unit so you can check the end of the prelude when debugging |
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| 321 | template< typename MutatorType > |
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| 322 | inline void mutateTranslationUnit( std::list< Declaration* > &translationUnit, MutatorType &mutator ) { |
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| 323 | bool seenIntrinsic = false; |
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| 324 | SemanticError errors; |
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| 325 | for ( typename std::list< Declaration* >::iterator i = translationUnit.begin(); i != translationUnit.end(); ++i ) { |
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| 326 | try { |
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| 327 | if ( *i ) { |
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| 328 | if ( (*i)->get_linkage() == LinkageSpec::Intrinsic ) { |
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| 329 | seenIntrinsic = true; |
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| 330 | } else if ( seenIntrinsic ) { |
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| 331 | seenIntrinsic = false; // break on this line when debugging for end of prelude |
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| 332 | } |
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[b4cd03b7] | 333 | |
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[05d47278] | 334 | *i = dynamic_cast< Declaration* >( (*i)->acceptMutator( mutator ) ); |
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| 335 | assert( *i ); |
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| 336 | } // if |
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| 337 | } catch( SemanticError &e ) { |
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| 338 | errors.append( e ); |
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| 339 | } // try |
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| 340 | } // for |
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| 341 | if ( ! errors.isEmpty() ) { |
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| 342 | throw errors; |
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| 343 | } // if |
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| 344 | } |
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| 345 | |
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[01aeade] | 346 | void box( std::list< Declaration *>& translationUnit ) { |
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[9d7b3ea] | 347 | LayoutFunctionBuilder layoutBuilder; |
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[01aeade] | 348 | Pass1 pass1; |
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| 349 | Pass2 pass2; |
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[4e284ea6] | 350 | GenericInstantiator instantiator; |
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[8a34677] | 351 | PolyGenericCalculator polyCalculator; |
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[01aeade] | 352 | Pass3 pass3; |
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[70a06f6] | 353 | |
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[9d7b3ea] | 354 | layoutBuilder.mutateDeclarationList( translationUnit ); |
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[05d47278] | 355 | mutateTranslationUnit/*All*/( translationUnit, pass1 ); |
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| 356 | mutateTranslationUnit/*All*/( translationUnit, pass2 ); |
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[4e284ea6] | 357 | instantiator.mutateDeclarationList( translationUnit ); |
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[8a34677] | 358 | mutateTranslationUnit/*All*/( translationUnit, polyCalculator ); |
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[05d47278] | 359 | mutateTranslationUnit/*All*/( translationUnit, pass3 ); |
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[6c3744e] | 360 | } |
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| 361 | |
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[9d7b3ea] | 362 | ////////////////////////////////// LayoutFunctionBuilder //////////////////////////////////////////// |
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| 363 | |
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| 364 | DeclarationWithType *LayoutFunctionBuilder::mutate( FunctionDecl *functionDecl ) { |
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| 365 | functionDecl->set_functionType( maybeMutate( functionDecl->get_functionType(), *this ) ); |
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| 366 | mutateAll( functionDecl->get_oldDecls(), *this ); |
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| 367 | ++functionNesting; |
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| 368 | functionDecl->set_statements( maybeMutate( functionDecl->get_statements(), *this ) ); |
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| 369 | --functionNesting; |
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| 370 | return functionDecl; |
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| 371 | } |
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[70a06f6] | 372 | |
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[9d7b3ea] | 373 | /// Get a list of type declarations that will affect a layout function |
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| 374 | std::list< TypeDecl* > takeOtypeOnly( std::list< TypeDecl* > &decls ) { |
---|
| 375 | std::list< TypeDecl * > otypeDecls; |
---|
| 376 | |
---|
| 377 | for ( std::list< TypeDecl* >::const_iterator decl = decls.begin(); decl != decls.end(); ++decl ) { |
---|
[3627356] | 378 | if ( (*decl)->get_kind() == TypeDecl::Any ) { |
---|
[9d7b3ea] | 379 | otypeDecls.push_back( *decl ); |
---|
| 380 | } |
---|
| 381 | } |
---|
[70a06f6] | 382 | |
---|
[9d7b3ea] | 383 | return otypeDecls; |
---|
| 384 | } |
---|
| 385 | |
---|
| 386 | /// Adds parameters for otype layout to a function type |
---|
| 387 | void addOtypeParams( FunctionType *layoutFnType, std::list< TypeDecl* > &otypeParams ) { |
---|
| 388 | BasicType sizeAlignType( Type::Qualifiers(), BasicType::LongUnsignedInt ); |
---|
[70a06f6] | 389 | |
---|
[9d7b3ea] | 390 | for ( std::list< TypeDecl* >::const_iterator param = otypeParams.begin(); param != otypeParams.end(); ++param ) { |
---|
[2e60a1a] | 391 | TypeInstType paramType( Type::Qualifiers(), (*param)->get_name(), *param ); |
---|
[adc6781] | 392 | std::string paramName = mangleType( ¶mType ); |
---|
| 393 | layoutFnType->get_parameters().push_back( new ObjectDecl( sizeofName( paramName ), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, sizeAlignType.clone(), 0 ) ); |
---|
| 394 | layoutFnType->get_parameters().push_back( new ObjectDecl( alignofName( paramName ), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, sizeAlignType.clone(), 0 ) ); |
---|
[9d7b3ea] | 395 | } |
---|
| 396 | } |
---|
| 397 | |
---|
| 398 | /// Builds a layout function declaration |
---|
[adc6781] | 399 | FunctionDecl *buildLayoutFunctionDecl( AggregateDecl *typeDecl, unsigned int functionNesting, FunctionType *layoutFnType ) { |
---|
[9d7b3ea] | 400 | // Routines at global scope marked "static" to prevent multiple definitions is separate translation units |
---|
| 401 | // because each unit generates copies of the default routines for each aggregate. |
---|
| 402 | FunctionDecl *layoutDecl = new FunctionDecl( |
---|
[adc6781] | 403 | layoutofName( typeDecl ), functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, layoutFnType, new CompoundStmt( noLabels ), true, false ); |
---|
[9d7b3ea] | 404 | layoutDecl->fixUniqueId(); |
---|
| 405 | return layoutDecl; |
---|
| 406 | } |
---|
| 407 | |
---|
| 408 | /// Makes a unary operation |
---|
| 409 | Expression *makeOp( const std::string &name, Expression *arg ) { |
---|
| 410 | UntypedExpr *expr = new UntypedExpr( new NameExpr( name ) ); |
---|
| 411 | expr->get_args().push_back( arg ); |
---|
| 412 | return expr; |
---|
| 413 | } |
---|
| 414 | |
---|
| 415 | /// Makes a binary operation |
---|
| 416 | Expression *makeOp( const std::string &name, Expression *lhs, Expression *rhs ) { |
---|
| 417 | UntypedExpr *expr = new UntypedExpr( new NameExpr( name ) ); |
---|
| 418 | expr->get_args().push_back( lhs ); |
---|
| 419 | expr->get_args().push_back( rhs ); |
---|
| 420 | return expr; |
---|
| 421 | } |
---|
| 422 | |
---|
| 423 | /// Returns the dereference of a local pointer variable |
---|
| 424 | Expression *derefVar( ObjectDecl *var ) { |
---|
| 425 | return makeOp( "*?", new VariableExpr( var ) ); |
---|
| 426 | } |
---|
| 427 | |
---|
| 428 | /// makes an if-statement with a single-expression if-block and no then block |
---|
| 429 | Statement *makeCond( Expression *cond, Expression *ifPart ) { |
---|
[3627356] | 430 | return new IfStmt( noLabels, cond, new ExprStmt( noLabels, ifPart ), 0 ); |
---|
[9d7b3ea] | 431 | } |
---|
| 432 | |
---|
| 433 | /// makes a statement that assigns rhs to lhs if lhs < rhs |
---|
| 434 | Statement *makeAssignMax( Expression *lhs, Expression *rhs ) { |
---|
| 435 | return makeCond( makeOp( "?<?", lhs, rhs ), makeOp( "?=?", lhs->clone(), rhs->clone() ) ); |
---|
| 436 | } |
---|
| 437 | |
---|
| 438 | /// makes a statement that aligns lhs to rhs (rhs should be an integer power of two) |
---|
| 439 | Statement *makeAlignTo( Expression *lhs, Expression *rhs ) { |
---|
| 440 | // check that the lhs is zeroed out to the level of rhs |
---|
| 441 | Expression *ifCond = makeOp( "?&?", lhs, makeOp( "?-?", rhs, new ConstantExpr( Constant( new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), "1" ) ) ) ); |
---|
| 442 | // if not aligned, increment to alignment |
---|
| 443 | Expression *ifExpr = makeOp( "?+=?", lhs->clone(), makeOp( "?-?", rhs->clone(), ifCond->clone() ) ); |
---|
| 444 | return makeCond( ifCond, ifExpr ); |
---|
| 445 | } |
---|
[70a06f6] | 446 | |
---|
[9d7b3ea] | 447 | /// adds an expression to a compound statement |
---|
| 448 | void addExpr( CompoundStmt *stmts, Expression *expr ) { |
---|
| 449 | stmts->get_kids().push_back( new ExprStmt( noLabels, expr ) ); |
---|
| 450 | } |
---|
| 451 | |
---|
| 452 | /// adds a statement to a compound statement |
---|
| 453 | void addStmt( CompoundStmt *stmts, Statement *stmt ) { |
---|
| 454 | stmts->get_kids().push_back( stmt ); |
---|
| 455 | } |
---|
[70a06f6] | 456 | |
---|
[3627356] | 457 | Declaration *LayoutFunctionBuilder::mutate( StructDecl *structDecl ) { |
---|
[9d7b3ea] | 458 | // do not generate layout function for "empty" tag structs |
---|
| 459 | if ( structDecl->get_members().empty() ) return structDecl; |
---|
| 460 | |
---|
| 461 | // get parameters that can change layout, exiting early if none |
---|
| 462 | std::list< TypeDecl* > otypeParams = takeOtypeOnly( structDecl->get_parameters() ); |
---|
| 463 | if ( otypeParams.empty() ) return structDecl; |
---|
| 464 | |
---|
| 465 | // build layout function signature |
---|
| 466 | FunctionType *layoutFnType = new FunctionType( Type::Qualifiers(), false ); |
---|
| 467 | BasicType *sizeAlignType = new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ); |
---|
| 468 | PointerType *sizeAlignOutType = new PointerType( Type::Qualifiers(), sizeAlignType ); |
---|
[70a06f6] | 469 | |
---|
[adc6781] | 470 | ObjectDecl *sizeParam = new ObjectDecl( sizeofName( structDecl->get_name() ), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, sizeAlignOutType, 0 ); |
---|
[9d7b3ea] | 471 | layoutFnType->get_parameters().push_back( sizeParam ); |
---|
[adc6781] | 472 | ObjectDecl *alignParam = new ObjectDecl( alignofName( structDecl->get_name() ), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, sizeAlignOutType->clone(), 0 ); |
---|
[9d7b3ea] | 473 | layoutFnType->get_parameters().push_back( alignParam ); |
---|
[adc6781] | 474 | ObjectDecl *offsetParam = new ObjectDecl( offsetofName( structDecl->get_name() ), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, sizeAlignOutType->clone(), 0 ); |
---|
[9d7b3ea] | 475 | layoutFnType->get_parameters().push_back( offsetParam ); |
---|
| 476 | addOtypeParams( layoutFnType, otypeParams ); |
---|
| 477 | |
---|
| 478 | // build function decl |
---|
[adc6781] | 479 | FunctionDecl *layoutDecl = buildLayoutFunctionDecl( structDecl, functionNesting, layoutFnType ); |
---|
[9d7b3ea] | 480 | |
---|
| 481 | // calculate struct layout in function body |
---|
| 482 | |
---|
| 483 | // initialize size and alignment to 0 and 1 (will have at least one member to re-edit size |
---|
| 484 | addExpr( layoutDecl->get_statements(), makeOp( "?=?", derefVar( sizeParam ), new ConstantExpr( Constant( sizeAlignType->clone(), "0" ) ) ) ); |
---|
| 485 | addExpr( layoutDecl->get_statements(), makeOp( "?=?", derefVar( alignParam ), new ConstantExpr( Constant( sizeAlignType->clone(), "1" ) ) ) ); |
---|
| 486 | unsigned long n_members = 0; |
---|
| 487 | bool firstMember = true; |
---|
| 488 | for ( std::list< Declaration* >::const_iterator member = structDecl->get_members().begin(); member != structDecl->get_members().end(); ++member ) { |
---|
| 489 | DeclarationWithType *dwt = dynamic_cast< DeclarationWithType * >( *member ); |
---|
| 490 | assert( dwt ); |
---|
[bd91e2a] | 491 | Type *memberType = dwt->get_type(); |
---|
[9d7b3ea] | 492 | |
---|
| 493 | if ( firstMember ) { |
---|
| 494 | firstMember = false; |
---|
| 495 | } else { |
---|
| 496 | // make sure all members after the first (automatically aligned at 0) are properly padded for alignment |
---|
[bd91e2a] | 497 | addStmt( layoutDecl->get_statements(), makeAlignTo( derefVar( sizeParam ), new AlignofExpr( memberType->clone() ) ) ); |
---|
[9d7b3ea] | 498 | } |
---|
[70a06f6] | 499 | |
---|
[9d7b3ea] | 500 | // place current size in the current offset index |
---|
| 501 | addExpr( layoutDecl->get_statements(), makeOp( "?=?", makeOp( "?[?]", new VariableExpr( offsetParam ), new ConstantExpr( Constant::from( n_members ) ) ), |
---|
| 502 | derefVar( sizeParam ) ) ); |
---|
| 503 | ++n_members; |
---|
| 504 | |
---|
| 505 | // add member size to current size |
---|
[bd91e2a] | 506 | addExpr( layoutDecl->get_statements(), makeOp( "?+=?", derefVar( sizeParam ), new SizeofExpr( memberType->clone() ) ) ); |
---|
[70a06f6] | 507 | |
---|
[9d7b3ea] | 508 | // take max of member alignment and global alignment |
---|
[bd91e2a] | 509 | addStmt( layoutDecl->get_statements(), makeAssignMax( derefVar( alignParam ), new AlignofExpr( memberType->clone() ) ) ); |
---|
[9d7b3ea] | 510 | } |
---|
| 511 | // make sure the type is end-padded to a multiple of its alignment |
---|
| 512 | addStmt( layoutDecl->get_statements(), makeAlignTo( derefVar( sizeParam ), derefVar( alignParam ) ) ); |
---|
| 513 | |
---|
| 514 | addDeclarationAfter( layoutDecl ); |
---|
| 515 | return structDecl; |
---|
| 516 | } |
---|
[70a06f6] | 517 | |
---|
[3627356] | 518 | Declaration *LayoutFunctionBuilder::mutate( UnionDecl *unionDecl ) { |
---|
[9d7b3ea] | 519 | // do not generate layout function for "empty" tag unions |
---|
| 520 | if ( unionDecl->get_members().empty() ) return unionDecl; |
---|
[70a06f6] | 521 | |
---|
[9d7b3ea] | 522 | // get parameters that can change layout, exiting early if none |
---|
| 523 | std::list< TypeDecl* > otypeParams = takeOtypeOnly( unionDecl->get_parameters() ); |
---|
| 524 | if ( otypeParams.empty() ) return unionDecl; |
---|
| 525 | |
---|
| 526 | // build layout function signature |
---|
| 527 | FunctionType *layoutFnType = new FunctionType( Type::Qualifiers(), false ); |
---|
| 528 | BasicType *sizeAlignType = new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ); |
---|
| 529 | PointerType *sizeAlignOutType = new PointerType( Type::Qualifiers(), sizeAlignType ); |
---|
[70a06f6] | 530 | |
---|
[adc6781] | 531 | ObjectDecl *sizeParam = new ObjectDecl( sizeofName( unionDecl->get_name() ), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, sizeAlignOutType, 0 ); |
---|
[9d7b3ea] | 532 | layoutFnType->get_parameters().push_back( sizeParam ); |
---|
[adc6781] | 533 | ObjectDecl *alignParam = new ObjectDecl( alignofName( unionDecl->get_name() ), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, sizeAlignOutType->clone(), 0 ); |
---|
[9d7b3ea] | 534 | layoutFnType->get_parameters().push_back( alignParam ); |
---|
| 535 | addOtypeParams( layoutFnType, otypeParams ); |
---|
| 536 | |
---|
| 537 | // build function decl |
---|
[adc6781] | 538 | FunctionDecl *layoutDecl = buildLayoutFunctionDecl( unionDecl, functionNesting, layoutFnType ); |
---|
[9d7b3ea] | 539 | |
---|
| 540 | // calculate union layout in function body |
---|
| 541 | addExpr( layoutDecl->get_statements(), makeOp( "?=?", derefVar( sizeParam ), new ConstantExpr( Constant( sizeAlignType->clone(), "1" ) ) ) ); |
---|
| 542 | addExpr( layoutDecl->get_statements(), makeOp( "?=?", derefVar( alignParam ), new ConstantExpr( Constant( sizeAlignType->clone(), "1" ) ) ) ); |
---|
| 543 | for ( std::list< Declaration* >::const_iterator member = unionDecl->get_members().begin(); member != unionDecl->get_members().end(); ++member ) { |
---|
| 544 | DeclarationWithType *dwt = dynamic_cast< DeclarationWithType * >( *member ); |
---|
| 545 | assert( dwt ); |
---|
[bd91e2a] | 546 | Type *memberType = dwt->get_type(); |
---|
[70a06f6] | 547 | |
---|
[9d7b3ea] | 548 | // take max member size and global size |
---|
[bd91e2a] | 549 | addStmt( layoutDecl->get_statements(), makeAssignMax( derefVar( sizeParam ), new SizeofExpr( memberType->clone() ) ) ); |
---|
[70a06f6] | 550 | |
---|
[9d7b3ea] | 551 | // take max of member alignment and global alignment |
---|
[bd91e2a] | 552 | addStmt( layoutDecl->get_statements(), makeAssignMax( derefVar( alignParam ), new AlignofExpr( memberType->clone() ) ) ); |
---|
[9d7b3ea] | 553 | } |
---|
| 554 | // make sure the type is end-padded to a multiple of its alignment |
---|
| 555 | addStmt( layoutDecl->get_statements(), makeAlignTo( derefVar( sizeParam ), derefVar( alignParam ) ) ); |
---|
| 556 | |
---|
| 557 | addDeclarationAfter( layoutDecl ); |
---|
| 558 | return unionDecl; |
---|
| 559 | } |
---|
[70a06f6] | 560 | |
---|
[01aeade] | 561 | ////////////////////////////////////////// Pass1 //////////////////////////////////////////////////// |
---|
| 562 | |
---|
| 563 | namespace { |
---|
[bdf1954] | 564 | std::string makePolyMonoSuffix( FunctionType * function, const TyVarMap &tyVars ) { |
---|
| 565 | std::stringstream name; |
---|
| 566 | |
---|
[ed1065c] | 567 | // NOTE: this function previously used isPolyObj, which failed to produce |
---|
| 568 | // the correct thing in some situations. It's not clear to me why this wasn't working. |
---|
| 569 | |
---|
[ae63a18] | 570 | // if the return type or a parameter type involved polymorphic types, then the adapter will need |
---|
| 571 | // to take those polymorphic types as pointers. Therefore, there can be two different functions |
---|
[bdf1954] | 572 | // with the same mangled name, so we need to further mangle the names. |
---|
[ed1065c] | 573 | for ( std::list< DeclarationWithType *>::iterator retval = function->get_returnVals().begin(); retval != function->get_returnVals().end(); ++retval ) { |
---|
[ffad73a] | 574 | if ( isPolyType( (*retval)->get_type(), tyVars ) ) { |
---|
[ed1065c] | 575 | name << "P"; |
---|
| 576 | } else { |
---|
| 577 | name << "M"; |
---|
| 578 | } |
---|
[bdf1954] | 579 | } |
---|
| 580 | name << "_"; |
---|
| 581 | std::list< DeclarationWithType *> ¶mList = function->get_parameters(); |
---|
| 582 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
---|
[ffad73a] | 583 | if ( isPolyType( (*arg)->get_type(), tyVars ) ) { |
---|
[bdf1954] | 584 | name << "P"; |
---|
| 585 | } else { |
---|
[ae63a18] | 586 | name << "M"; |
---|
[bdf1954] | 587 | } |
---|
| 588 | } // for |
---|
| 589 | return name.str(); |
---|
| 590 | } |
---|
| 591 | |
---|
| 592 | std::string mangleAdapterName( FunctionType * function, const TyVarMap &tyVars ) { |
---|
| 593 | return SymTab::Mangler::mangle( function ) + makePolyMonoSuffix( function, tyVars ); |
---|
| 594 | } |
---|
| 595 | |
---|
[01aeade] | 596 | std::string makeAdapterName( const std::string &mangleName ) { |
---|
| 597 | return "_adapter" + mangleName; |
---|
| 598 | } |
---|
[6c3744e] | 599 | |
---|
[6635c74] | 600 | Pass1::Pass1() : useRetval( false ), tempNamer( "_temp" ) {} |
---|
[01aeade] | 601 | |
---|
[dc12481] | 602 | /// Returns T if the given declaration is (*?=?)(T *, T) for some TypeInstType T (return not checked, but maybe should be), NULL otherwise |
---|
| 603 | TypeInstType *isTypeInstAssignment( DeclarationWithType *decl ) { |
---|
[01aeade] | 604 | if ( decl->get_name() == "?=?" ) { |
---|
[1194734] | 605 | if ( FunctionType *funType = getFunctionType( decl->get_type() ) ) { |
---|
| 606 | if ( funType->get_parameters().size() == 2 ) { |
---|
| 607 | if ( PointerType *pointer = dynamic_cast< PointerType *>( funType->get_parameters().front()->get_type() ) ) { |
---|
[dc12481] | 608 | if ( TypeInstType *refType = dynamic_cast< TypeInstType *>( pointer->get_base() ) ) { |
---|
| 609 | if ( TypeInstType *refType2 = dynamic_cast< TypeInstType *>( funType->get_parameters().back()->get_type() ) ) { |
---|
[1194734] | 610 | if ( refType->get_name() == refType2->get_name() ) { |
---|
| 611 | return refType; |
---|
[cf16f94] | 612 | } // if |
---|
[01aeade] | 613 | } // if |
---|
| 614 | } // if |
---|
| 615 | } // if |
---|
| 616 | } // if |
---|
| 617 | } // if |
---|
| 618 | } // if |
---|
[1194734] | 619 | return 0; |
---|
[01aeade] | 620 | } |
---|
[70a06f6] | 621 | |
---|
[dc12481] | 622 | /// returns T if the given declaration is: (*?=?)(T *, T) for some type T (return not checked, but maybe should be), NULL otherwise |
---|
| 623 | /// Only picks assignments where neither parameter is cv-qualified |
---|
| 624 | Type *isAssignment( DeclarationWithType *decl ) { |
---|
| 625 | if ( decl->get_name() == "?=?" ) { |
---|
| 626 | if ( FunctionType *funType = getFunctionType( decl->get_type() ) ) { |
---|
| 627 | if ( funType->get_parameters().size() == 2 ) { |
---|
| 628 | Type::Qualifiers defaultQualifiers; |
---|
| 629 | Type *paramType1 = funType->get_parameters().front()->get_type(); |
---|
| 630 | if ( paramType1->get_qualifiers() != defaultQualifiers ) return 0; |
---|
| 631 | Type *paramType2 = funType->get_parameters().back()->get_type(); |
---|
| 632 | if ( paramType2->get_qualifiers() != defaultQualifiers ) return 0; |
---|
[70a06f6] | 633 | |
---|
[dc12481] | 634 | if ( PointerType *pointerType = dynamic_cast< PointerType* >( paramType1 ) ) { |
---|
| 635 | Type *baseType1 = pointerType->get_base(); |
---|
| 636 | if ( baseType1->get_qualifiers() != defaultQualifiers ) return 0; |
---|
| 637 | SymTab::Indexer dummy; |
---|
| 638 | if ( ResolvExpr::typesCompatible( baseType1, paramType2, dummy ) ) { |
---|
| 639 | return baseType1; |
---|
| 640 | } // if |
---|
| 641 | } // if |
---|
| 642 | } // if |
---|
| 643 | } // if |
---|
| 644 | } // if |
---|
| 645 | return 0; |
---|
| 646 | } |
---|
[01aeade] | 647 | |
---|
| 648 | void Pass1::findAssignOps( const std::list< TypeDecl *> &forall ) { |
---|
[ed1065c] | 649 | // what if a nested function uses an assignment operator? |
---|
| 650 | // assignOps.clear(); |
---|
[01aeade] | 651 | for ( std::list< TypeDecl *>::const_iterator i = forall.begin(); i != forall.end(); ++i ) { |
---|
| 652 | for ( std::list< DeclarationWithType *>::const_iterator assert = (*i)->get_assertions().begin(); assert != (*i)->get_assertions().end(); ++assert ) { |
---|
| 653 | std::string typeName; |
---|
[dc12481] | 654 | if ( TypeInstType *typeInst = isTypeInstAssignment( *assert ) ) { |
---|
[1194734] | 655 | assignOps[ typeInst->get_name() ] = *assert; |
---|
[01aeade] | 656 | } // if |
---|
| 657 | } // for |
---|
| 658 | } // for |
---|
| 659 | } |
---|
| 660 | |
---|
[82dd287] | 661 | DeclarationWithType *Pass1::mutate( FunctionDecl *functionDecl ) { |
---|
[89173242] | 662 | // if this is a assignment function, put it in the map for this scope |
---|
[dc12481] | 663 | if ( Type *assignedType = isAssignment( functionDecl ) ) { |
---|
| 664 | if ( ! dynamic_cast< TypeInstType* >( assignedType ) ) { |
---|
| 665 | scopedAssignOps.insert( assignedType, functionDecl ); |
---|
[1194734] | 666 | } |
---|
| 667 | } |
---|
[b4cd03b7] | 668 | |
---|
[e56cfdb0] | 669 | if ( functionDecl->get_statements() ) { // empty routine body ? |
---|
| 670 | doBeginScope(); |
---|
[4b8f918] | 671 | scopeTyVars.beginScope(); |
---|
[63c0dbf] | 672 | assignOps.beginScope(); |
---|
[01aeade] | 673 | DeclarationWithType *oldRetval = retval; |
---|
| 674 | bool oldUseRetval = useRetval; |
---|
[e56cfdb0] | 675 | |
---|
| 676 | // process polymorphic return value |
---|
[01aeade] | 677 | retval = 0; |
---|
[aadc9a4] | 678 | if ( isPolyRet( functionDecl->get_functionType() ) && functionDecl->get_linkage() == LinkageSpec::Cforall ) { |
---|
[01aeade] | 679 | retval = functionDecl->get_functionType()->get_returnVals().front(); |
---|
[ae63a18] | 680 | |
---|
[01aeade] | 681 | // give names to unnamed return values |
---|
| 682 | if ( retval->get_name() == "" ) { |
---|
| 683 | retval->set_name( "_retparm" ); |
---|
| 684 | retval->set_linkage( LinkageSpec::C ); |
---|
| 685 | } // if |
---|
| 686 | } // if |
---|
[ae63a18] | 687 | |
---|
[e56cfdb0] | 688 | FunctionType *functionType = functionDecl->get_functionType(); |
---|
[01aeade] | 689 | makeTyVarMap( functionDecl->get_functionType(), scopeTyVars ); |
---|
| 690 | findAssignOps( functionDecl->get_functionType()->get_forall() ); |
---|
[e56cfdb0] | 691 | |
---|
| 692 | std::list< DeclarationWithType *> ¶mList = functionType->get_parameters(); |
---|
| 693 | std::list< FunctionType *> functions; |
---|
| 694 | for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) { |
---|
| 695 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) { |
---|
| 696 | findFunction( (*assert)->get_type(), functions, scopeTyVars, needsAdapter ); |
---|
| 697 | } // for |
---|
| 698 | } // for |
---|
| 699 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
---|
| 700 | findFunction( (*arg)->get_type(), functions, scopeTyVars, needsAdapter ); |
---|
| 701 | } // for |
---|
[b4cd03b7] | 702 | |
---|
[e56cfdb0] | 703 | for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) { |
---|
[bdf1954] | 704 | std::string mangleName = mangleAdapterName( *funType, scopeTyVars ); |
---|
[e56cfdb0] | 705 | if ( adapters.find( mangleName ) == adapters.end() ) { |
---|
| 706 | std::string adapterName = makeAdapterName( mangleName ); |
---|
| 707 | adapters.insert( std::pair< std::string, DeclarationWithType *>( mangleName, new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) ) ); |
---|
| 708 | } // if |
---|
| 709 | } // for |
---|
| 710 | |
---|
[01aeade] | 711 | functionDecl->set_statements( functionDecl->get_statements()->acceptMutator( *this ) ); |
---|
[ae63a18] | 712 | |
---|
[6f49cdf] | 713 | scopeTyVars.endScope(); |
---|
[63c0dbf] | 714 | assignOps.endScope(); |
---|
[01aeade] | 715 | retval = oldRetval; |
---|
| 716 | useRetval = oldUseRetval; |
---|
[e56cfdb0] | 717 | doEndScope(); |
---|
[01aeade] | 718 | } // if |
---|
| 719 | return functionDecl; |
---|
| 720 | } |
---|
[6c3744e] | 721 | |
---|
[01aeade] | 722 | TypeDecl *Pass1::mutate( TypeDecl *typeDecl ) { |
---|
| 723 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
| 724 | return Mutator::mutate( typeDecl ); |
---|
| 725 | } |
---|
[6c3744e] | 726 | |
---|
[01aeade] | 727 | Expression *Pass1::mutate( CommaExpr *commaExpr ) { |
---|
| 728 | bool oldUseRetval = useRetval; |
---|
| 729 | useRetval = false; |
---|
| 730 | commaExpr->set_arg1( maybeMutate( commaExpr->get_arg1(), *this ) ); |
---|
| 731 | useRetval = oldUseRetval; |
---|
| 732 | commaExpr->set_arg2( maybeMutate( commaExpr->get_arg2(), *this ) ); |
---|
| 733 | return commaExpr; |
---|
| 734 | } |
---|
[6c3744e] | 735 | |
---|
[01aeade] | 736 | Expression *Pass1::mutate( ConditionalExpr *condExpr ) { |
---|
| 737 | bool oldUseRetval = useRetval; |
---|
| 738 | useRetval = false; |
---|
| 739 | condExpr->set_arg1( maybeMutate( condExpr->get_arg1(), *this ) ); |
---|
| 740 | useRetval = oldUseRetval; |
---|
| 741 | condExpr->set_arg2( maybeMutate( condExpr->get_arg2(), *this ) ); |
---|
| 742 | condExpr->set_arg3( maybeMutate( condExpr->get_arg3(), *this ) ); |
---|
| 743 | return condExpr; |
---|
[6c3744e] | 744 | |
---|
[01aeade] | 745 | } |
---|
[6c3744e] | 746 | |
---|
[5c52b06] | 747 | void Pass1::passArgTypeVars( ApplicationExpr *appExpr, Type *parmType, Type *argBaseType, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars, std::set< std::string > &seenTypes ) { |
---|
[4b8f918] | 748 | Type *polyType = isPolyType( parmType, exprTyVars ); |
---|
| 749 | if ( polyType && ! dynamic_cast< TypeInstType* >( polyType ) ) { |
---|
| 750 | std::string typeName = mangleType( polyType ); |
---|
[adc6781] | 751 | if ( seenTypes.count( typeName ) ) return; |
---|
[5c52b06] | 752 | |
---|
| 753 | arg = appExpr->get_args().insert( arg, new SizeofExpr( argBaseType->clone() ) ); |
---|
| 754 | arg++; |
---|
| 755 | arg = appExpr->get_args().insert( arg, new AlignofExpr( argBaseType->clone() ) ); |
---|
| 756 | arg++; |
---|
[4b8f918] | 757 | if ( dynamic_cast< StructInstType* >( polyType ) ) { |
---|
[5c52b06] | 758 | if ( StructInstType *argBaseStructType = dynamic_cast< StructInstType* >( argBaseType ) ) { |
---|
[89173242] | 759 | // zero-length arrays are forbidden by C, so don't pass offset for empty struct |
---|
| 760 | if ( ! argBaseStructType->get_baseStruct()->get_members().empty() ) { |
---|
[d75038c] | 761 | arg = appExpr->get_args().insert( arg, new OffsetPackExpr( argBaseStructType->clone() ) ); |
---|
[89173242] | 762 | arg++; |
---|
| 763 | } |
---|
[5c52b06] | 764 | } else { |
---|
| 765 | throw SemanticError( "Cannot pass non-struct type for generic struct" ); |
---|
| 766 | } |
---|
| 767 | } |
---|
| 768 | |
---|
[adc6781] | 769 | seenTypes.insert( typeName ); |
---|
[5c52b06] | 770 | } |
---|
| 771 | } |
---|
| 772 | |
---|
| 773 | void Pass1::passTypeVars( ApplicationExpr *appExpr, ReferenceToType *polyRetType, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) { |
---|
[7754cde] | 774 | // pass size/align for type variables |
---|
[01aeade] | 775 | for ( TyVarMap::const_iterator tyParm = exprTyVars.begin(); tyParm != exprTyVars.end(); ++tyParm ) { |
---|
| 776 | ResolvExpr::EqvClass eqvClass; |
---|
| 777 | assert( env ); |
---|
| 778 | if ( tyParm->second == TypeDecl::Any ) { |
---|
| 779 | Type *concrete = env->lookup( tyParm->first ); |
---|
| 780 | if ( concrete ) { |
---|
| 781 | arg = appExpr->get_args().insert( arg, new SizeofExpr( concrete->clone() ) ); |
---|
| 782 | arg++; |
---|
[db0b3ce] | 783 | arg = appExpr->get_args().insert( arg, new AlignofExpr( concrete->clone() ) ); |
---|
| 784 | arg++; |
---|
[01aeade] | 785 | } else { |
---|
[dc2e7e0] | 786 | /// xxx - should this be an assertion? |
---|
[01aeade] | 787 | throw SemanticError( "unbound type variable in application ", appExpr ); |
---|
| 788 | } // if |
---|
| 789 | } // if |
---|
| 790 | } // for |
---|
[7754cde] | 791 | |
---|
| 792 | // add size/align for generic types to parameter list |
---|
| 793 | if ( appExpr->get_function()->get_results().empty() ) return; |
---|
| 794 | FunctionType *funcType = getFunctionType( appExpr->get_function()->get_results().front() ); |
---|
| 795 | assert( funcType ); |
---|
[ae63a18] | 796 | |
---|
[7754cde] | 797 | std::list< DeclarationWithType* >::const_iterator fnParm = funcType->get_parameters().begin(); |
---|
| 798 | std::list< Expression* >::const_iterator fnArg = arg; |
---|
[69911c11] | 799 | std::set< std::string > seenTypes; //< names for generic types we've seen |
---|
[7754cde] | 800 | |
---|
[5c52b06] | 801 | // a polymorphic return type may need to be added to the argument list |
---|
| 802 | if ( polyRetType ) { |
---|
| 803 | Type *concRetType = replaceWithConcrete( appExpr, polyRetType ); |
---|
| 804 | passArgTypeVars( appExpr, polyRetType, concRetType, arg, exprTyVars, seenTypes ); |
---|
| 805 | } |
---|
[70a06f6] | 806 | |
---|
[5c52b06] | 807 | // add type information args for presently unseen types in parameter list |
---|
| 808 | for ( ; fnParm != funcType->get_parameters().end() && fnArg != appExpr->get_args().end(); ++fnParm, ++fnArg ) { |
---|
| 809 | VariableExpr *fnArgBase = getBaseVar( *fnArg ); |
---|
| 810 | if ( ! fnArgBase || fnArgBase->get_results().empty() ) continue; |
---|
| 811 | passArgTypeVars( appExpr, (*fnParm)->get_type(), fnArgBase->get_results().front(), arg, exprTyVars, seenTypes ); |
---|
[7754cde] | 812 | } |
---|
[01aeade] | 813 | } |
---|
[6c3744e] | 814 | |
---|
[01aeade] | 815 | ObjectDecl *Pass1::makeTemporary( Type *type ) { |
---|
[68cd1ce] | 816 | ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, type, 0 ); |
---|
[01aeade] | 817 | stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) ); |
---|
| 818 | return newObj; |
---|
| 819 | } |
---|
[6c3744e] | 820 | |
---|
[01aeade] | 821 | Expression *Pass1::addRetParam( ApplicationExpr *appExpr, FunctionType *function, Type *retType, std::list< Expression *>::iterator &arg ) { |
---|
[cf16f94] | 822 | // ***** Code Removal ***** After introducing a temporary variable for all return expressions, the following code appears superfluous. |
---|
| 823 | // if ( useRetval ) { |
---|
| 824 | // assert( retval ); |
---|
| 825 | // arg = appExpr->get_args().insert( arg, new VariableExpr( retval ) ); |
---|
| 826 | // arg++; |
---|
| 827 | // } else { |
---|
| 828 | |
---|
| 829 | // Create temporary to hold return value of polymorphic function and produce that temporary as a result |
---|
| 830 | // using a comma expression. Possibly change comma expression into statement expression "{}" for multiple |
---|
| 831 | // return values. |
---|
| 832 | ObjectDecl *newObj = makeTemporary( retType->clone() ); |
---|
| 833 | Expression *paramExpr = new VariableExpr( newObj ); |
---|
[5c52b06] | 834 | |
---|
| 835 | // If the type of the temporary is not polymorphic, box temporary by taking its address; |
---|
| 836 | // otherwise the temporary is already boxed and can be used directly. |
---|
[5f6c42c] | 837 | if ( ! isPolyType( newObj->get_type(), scopeTyVars, env ) ) { |
---|
[cf16f94] | 838 | paramExpr = new AddressExpr( paramExpr ); |
---|
[01aeade] | 839 | } // if |
---|
[cf16f94] | 840 | arg = appExpr->get_args().insert( arg, paramExpr ); // add argument to function call |
---|
| 841 | arg++; |
---|
| 842 | // Build a comma expression to call the function and emulate a normal return. |
---|
| 843 | CommaExpr *commaExpr = new CommaExpr( appExpr, new VariableExpr( newObj ) ); |
---|
| 844 | commaExpr->set_env( appExpr->get_env() ); |
---|
| 845 | appExpr->set_env( 0 ); |
---|
| 846 | return commaExpr; |
---|
| 847 | // } // if |
---|
| 848 | // return appExpr; |
---|
[01aeade] | 849 | } |
---|
[6c3744e] | 850 | |
---|
[48ca586] | 851 | void Pass1::replaceParametersWithConcrete( ApplicationExpr *appExpr, std::list< Expression* >& params ) { |
---|
| 852 | for ( std::list< Expression* >::iterator param = params.begin(); param != params.end(); ++param ) { |
---|
| 853 | TypeExpr *paramType = dynamic_cast< TypeExpr* >( *param ); |
---|
| 854 | assert(paramType && "Aggregate parameters should be type expressions"); |
---|
| 855 | paramType->set_type( replaceWithConcrete( appExpr, paramType->get_type(), false ) ); |
---|
| 856 | } |
---|
| 857 | } |
---|
[b4cd03b7] | 858 | |
---|
[48ca586] | 859 | Type *Pass1::replaceWithConcrete( ApplicationExpr *appExpr, Type *type, bool doClone ) { |
---|
| 860 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType * >( type ) ) { |
---|
| 861 | Type *concrete = env->lookup( typeInst->get_name() ); |
---|
| 862 | if ( concrete == 0 ) { |
---|
| 863 | throw SemanticError( "Unbound type variable " + typeInst->get_name() + " in ", appExpr ); |
---|
| 864 | } // if |
---|
| 865 | return concrete; |
---|
| 866 | } else if ( StructInstType *structType = dynamic_cast< StructInstType* >( type ) ) { |
---|
| 867 | if ( doClone ) { |
---|
| 868 | structType = structType->clone(); |
---|
| 869 | } |
---|
| 870 | replaceParametersWithConcrete( appExpr, structType->get_parameters() ); |
---|
| 871 | return structType; |
---|
| 872 | } else if ( UnionInstType *unionType = dynamic_cast< UnionInstType* >( type ) ) { |
---|
| 873 | if ( doClone ) { |
---|
| 874 | unionType = unionType->clone(); |
---|
| 875 | } |
---|
| 876 | replaceParametersWithConcrete( appExpr, unionType->get_parameters() ); |
---|
| 877 | return unionType; |
---|
| 878 | } |
---|
| 879 | return type; |
---|
| 880 | } |
---|
| 881 | |
---|
| 882 | Expression *Pass1::addPolyRetParam( ApplicationExpr *appExpr, FunctionType *function, ReferenceToType *polyType, std::list< Expression *>::iterator &arg ) { |
---|
[01aeade] | 883 | assert( env ); |
---|
[48ca586] | 884 | Type *concrete = replaceWithConcrete( appExpr, polyType ); |
---|
[70a06f6] | 885 | // add out-parameter for return value |
---|
[01aeade] | 886 | return addRetParam( appExpr, function, concrete, arg ); |
---|
| 887 | } |
---|
[6c3744e] | 888 | |
---|
[01aeade] | 889 | Expression *Pass1::applyAdapter( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) { |
---|
| 890 | Expression *ret = appExpr; |
---|
[ffad73a] | 891 | if ( ! function->get_returnVals().empty() && isPolyType( function->get_returnVals().front()->get_type(), tyVars ) ) { |
---|
[01aeade] | 892 | ret = addRetParam( appExpr, function, function->get_returnVals().front()->get_type(), arg ); |
---|
| 893 | } // if |
---|
[bdf1954] | 894 | std::string mangleName = mangleAdapterName( function, tyVars ); |
---|
[01aeade] | 895 | std::string adapterName = makeAdapterName( mangleName ); |
---|
[b1a6d6b] | 896 | |
---|
[b4cd03b7] | 897 | // cast adaptee to void (*)(), since it may have any type inside a polymorphic function |
---|
| 898 | Type * adapteeType = new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ); |
---|
| 899 | appExpr->get_args().push_front( new CastExpr( appExpr->get_function(), adapteeType ) ); |
---|
[01aeade] | 900 | appExpr->set_function( new NameExpr( adapterName ) ); |
---|
[ae63a18] | 901 | |
---|
[01aeade] | 902 | return ret; |
---|
| 903 | } |
---|
[6c3744e] | 904 | |
---|
[01aeade] | 905 | void Pass1::boxParam( Type *param, Expression *&arg, const TyVarMap &exprTyVars ) { |
---|
| 906 | assert( ! arg->get_results().empty() ); |
---|
[1cced28] | 907 | if ( isPolyType( param, exprTyVars ) ) { |
---|
[9407ed8] | 908 | if ( isPolyType( arg->get_results().front() ) ) { |
---|
| 909 | // if the argument's type is polymorphic, we don't need to box again! |
---|
[01aeade] | 910 | return; |
---|
| 911 | } else if ( arg->get_results().front()->get_isLvalue() ) { |
---|
[b3ab8f0] | 912 | // VariableExpr and MemberExpr are lvalues; need to check this isn't coming from the second arg of a comma expression though (not an lvalue) |
---|
| 913 | if ( CommaExpr *commaArg = dynamic_cast< CommaExpr* >( arg ) ) { |
---|
[bc1ab61] | 914 | commaArg->set_arg2( new AddressExpr( commaArg->get_arg2() ) ); |
---|
[b3ab8f0] | 915 | } else { |
---|
| 916 | arg = new AddressExpr( arg ); |
---|
| 917 | } |
---|
[01aeade] | 918 | } else { |
---|
[bd85400] | 919 | // use type computed in unification to declare boxed variables |
---|
| 920 | Type * newType = param->clone(); |
---|
| 921 | if ( env ) env->apply( newType ); |
---|
| 922 | ObjectDecl *newObj = new ObjectDecl( tempNamer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, newType, 0 ); |
---|
[f6d7e0f] | 923 | newObj->get_type()->get_qualifiers() = Type::Qualifiers(); // TODO: is this right??? |
---|
[01aeade] | 924 | stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) ); |
---|
| 925 | UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
| 926 | assign->get_args().push_back( new VariableExpr( newObj ) ); |
---|
| 927 | assign->get_args().push_back( arg ); |
---|
| 928 | stmtsToAdd.push_back( new ExprStmt( noLabels, assign ) ); |
---|
| 929 | arg = new AddressExpr( new VariableExpr( newObj ) ); |
---|
| 930 | } // if |
---|
| 931 | } // if |
---|
| 932 | } |
---|
[6c3744e] | 933 | |
---|
[b4cd03b7] | 934 | /// cast parameters to polymorphic functions so that types are replaced with |
---|
| 935 | /// void * if they are type parameters in the formal type. |
---|
| 936 | /// this gets rid of warnings from gcc. |
---|
[01aeade] | 937 | void addCast( Expression *&actual, Type *formal, const TyVarMap &tyVars ) { |
---|
[b4cd03b7] | 938 | Type * newType = formal->clone(); |
---|
| 939 | if ( getFunctionType( newType ) ) { |
---|
| 940 | newType = ScrubTyVars::scrub( newType, tyVars ); |
---|
[01aeade] | 941 | actual = new CastExpr( actual, newType ); |
---|
| 942 | } // if |
---|
| 943 | } |
---|
[6c3744e] | 944 | |
---|
[01aeade] | 945 | void Pass1::boxParams( ApplicationExpr *appExpr, FunctionType *function, std::list< Expression *>::iterator &arg, const TyVarMap &exprTyVars ) { |
---|
| 946 | for ( std::list< DeclarationWithType *>::const_iterator param = function->get_parameters().begin(); param != function->get_parameters().end(); ++param, ++arg ) { |
---|
| 947 | assert( arg != appExpr->get_args().end() ); |
---|
| 948 | addCast( *arg, (*param)->get_type(), exprTyVars ); |
---|
| 949 | boxParam( (*param)->get_type(), *arg, exprTyVars ); |
---|
| 950 | } // for |
---|
| 951 | } |
---|
[6c3744e] | 952 | |
---|
[01aeade] | 953 | void Pass1::addInferredParams( ApplicationExpr *appExpr, FunctionType *functionType, std::list< Expression *>::iterator &arg, const TyVarMap &tyVars ) { |
---|
| 954 | std::list< Expression *>::iterator cur = arg; |
---|
| 955 | for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) { |
---|
| 956 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) { |
---|
| 957 | InferredParams::const_iterator inferParam = appExpr->get_inferParams().find( (*assert)->get_uniqueId() ); |
---|
[698664b] | 958 | assert( inferParam != appExpr->get_inferParams().end() && "NOTE: Explicit casts of polymorphic functions to compatible monomorphic functions are currently unsupported" ); |
---|
[01aeade] | 959 | Expression *newExpr = inferParam->second.expr->clone(); |
---|
| 960 | addCast( newExpr, (*assert)->get_type(), tyVars ); |
---|
| 961 | boxParam( (*assert)->get_type(), newExpr, tyVars ); |
---|
| 962 | appExpr->get_args().insert( cur, newExpr ); |
---|
| 963 | } // for |
---|
| 964 | } // for |
---|
| 965 | } |
---|
[6c3744e] | 966 | |
---|
[01aeade] | 967 | void makeRetParm( FunctionType *funcType ) { |
---|
| 968 | DeclarationWithType *retParm = funcType->get_returnVals().front(); |
---|
[6c3744e] | 969 | |
---|
[01aeade] | 970 | // make a new parameter that is a pointer to the type of the old return value |
---|
| 971 | retParm->set_type( new PointerType( Type::Qualifiers(), retParm->get_type() ) ); |
---|
| 972 | funcType->get_parameters().push_front( retParm ); |
---|
[6c3744e] | 973 | |
---|
[01aeade] | 974 | // we don't need the return value any more |
---|
| 975 | funcType->get_returnVals().clear(); |
---|
| 976 | } |
---|
[6c3744e] | 977 | |
---|
[01aeade] | 978 | FunctionType *makeAdapterType( FunctionType *adaptee, const TyVarMap &tyVars ) { |
---|
| 979 | // actually make the adapter type |
---|
| 980 | FunctionType *adapter = adaptee->clone(); |
---|
[ffad73a] | 981 | if ( ! adapter->get_returnVals().empty() && isPolyType( adapter->get_returnVals().front()->get_type(), tyVars ) ) { |
---|
[01aeade] | 982 | makeRetParm( adapter ); |
---|
| 983 | } // if |
---|
[68cd1ce] | 984 | adapter->get_parameters().push_front( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) ), 0 ) ); |
---|
[01aeade] | 985 | return adapter; |
---|
| 986 | } |
---|
[6c3744e] | 987 | |
---|
[01aeade] | 988 | Expression *makeAdapterArg( DeclarationWithType *param, DeclarationWithType *arg, DeclarationWithType *realParam, const TyVarMap &tyVars ) { |
---|
| 989 | assert( param ); |
---|
| 990 | assert( arg ); |
---|
[ffad73a] | 991 | if ( isPolyType( realParam->get_type(), tyVars ) ) { |
---|
[30aeb27] | 992 | if ( ! isPolyType( arg->get_type() ) ) { |
---|
[e56cfdb0] | 993 | UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
| 994 | deref->get_args().push_back( new CastExpr( new VariableExpr( param ), new PointerType( Type::Qualifiers(), arg->get_type()->clone() ) ) ); |
---|
| 995 | deref->get_results().push_back( arg->get_type()->clone() ); |
---|
| 996 | return deref; |
---|
| 997 | } // if |
---|
[01aeade] | 998 | } // if |
---|
| 999 | return new VariableExpr( param ); |
---|
| 1000 | } |
---|
[6c3744e] | 1001 | |
---|
[01aeade] | 1002 | 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 ) { |
---|
| 1003 | UniqueName paramNamer( "_p" ); |
---|
| 1004 | for ( ; param != paramEnd; ++param, ++arg, ++realParam ) { |
---|
| 1005 | if ( (*param)->get_name() == "" ) { |
---|
| 1006 | (*param)->set_name( paramNamer.newName() ); |
---|
| 1007 | (*param)->set_linkage( LinkageSpec::C ); |
---|
| 1008 | } // if |
---|
| 1009 | adapteeApp->get_args().push_back( makeAdapterArg( *param, *arg, *realParam, tyVars ) ); |
---|
| 1010 | } // for |
---|
| 1011 | } |
---|
[6c3744e] | 1012 | |
---|
[01aeade] | 1013 | FunctionDecl *Pass1::makeAdapter( FunctionType *adaptee, FunctionType *realType, const std::string &mangleName, const TyVarMap &tyVars ) { |
---|
| 1014 | FunctionType *adapterType = makeAdapterType( adaptee, tyVars ); |
---|
| 1015 | adapterType = ScrubTyVars::scrub( adapterType, tyVars ); |
---|
| 1016 | DeclarationWithType *adapteeDecl = adapterType->get_parameters().front(); |
---|
| 1017 | adapteeDecl->set_name( "_adaptee" ); |
---|
| 1018 | ApplicationExpr *adapteeApp = new ApplicationExpr( new CastExpr( new VariableExpr( adapteeDecl ), new PointerType( Type::Qualifiers(), realType ) ) ); |
---|
| 1019 | Statement *bodyStmt; |
---|
[ae63a18] | 1020 | |
---|
[01aeade] | 1021 | std::list< TypeDecl *>::iterator tyArg = realType->get_forall().begin(); |
---|
| 1022 | std::list< TypeDecl *>::iterator tyParam = adapterType->get_forall().begin(); |
---|
| 1023 | std::list< TypeDecl *>::iterator realTyParam = adaptee->get_forall().begin(); |
---|
| 1024 | for ( ; tyParam != adapterType->get_forall().end(); ++tyArg, ++tyParam, ++realTyParam ) { |
---|
| 1025 | assert( tyArg != realType->get_forall().end() ); |
---|
| 1026 | std::list< DeclarationWithType *>::iterator assertArg = (*tyArg)->get_assertions().begin(); |
---|
| 1027 | std::list< DeclarationWithType *>::iterator assertParam = (*tyParam)->get_assertions().begin(); |
---|
| 1028 | std::list< DeclarationWithType *>::iterator realAssertParam = (*realTyParam)->get_assertions().begin(); |
---|
| 1029 | for ( ; assertParam != (*tyParam)->get_assertions().end(); ++assertArg, ++assertParam, ++realAssertParam ) { |
---|
| 1030 | assert( assertArg != (*tyArg)->get_assertions().end() ); |
---|
| 1031 | adapteeApp->get_args().push_back( makeAdapterArg( *assertParam, *assertArg, *realAssertParam, tyVars ) ); |
---|
| 1032 | } // for |
---|
| 1033 | } // for |
---|
[ae63a18] | 1034 | |
---|
[01aeade] | 1035 | std::list< DeclarationWithType *>::iterator arg = realType->get_parameters().begin(); |
---|
| 1036 | std::list< DeclarationWithType *>::iterator param = adapterType->get_parameters().begin(); |
---|
| 1037 | std::list< DeclarationWithType *>::iterator realParam = adaptee->get_parameters().begin(); |
---|
| 1038 | param++; // skip adaptee parameter |
---|
| 1039 | if ( realType->get_returnVals().empty() ) { |
---|
| 1040 | addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars ); |
---|
| 1041 | bodyStmt = new ExprStmt( noLabels, adapteeApp ); |
---|
[ffad73a] | 1042 | } else if ( isPolyType( adaptee->get_returnVals().front()->get_type(), tyVars ) ) { |
---|
[01aeade] | 1043 | if ( (*param)->get_name() == "" ) { |
---|
| 1044 | (*param)->set_name( "_ret" ); |
---|
| 1045 | (*param)->set_linkage( LinkageSpec::C ); |
---|
| 1046 | } // if |
---|
| 1047 | UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
| 1048 | UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
| 1049 | deref->get_args().push_back( new CastExpr( new VariableExpr( *param++ ), new PointerType( Type::Qualifiers(), realType->get_returnVals().front()->get_type()->clone() ) ) ); |
---|
| 1050 | assign->get_args().push_back( deref ); |
---|
| 1051 | addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars ); |
---|
| 1052 | assign->get_args().push_back( adapteeApp ); |
---|
| 1053 | bodyStmt = new ExprStmt( noLabels, assign ); |
---|
| 1054 | } else { |
---|
| 1055 | // adapter for a function that returns a monomorphic value |
---|
| 1056 | addAdapterParams( adapteeApp, arg, param, adapterType->get_parameters().end(), realParam, tyVars ); |
---|
| 1057 | bodyStmt = new ReturnStmt( noLabels, adapteeApp ); |
---|
| 1058 | } // if |
---|
| 1059 | CompoundStmt *adapterBody = new CompoundStmt( noLabels ); |
---|
| 1060 | adapterBody->get_kids().push_back( bodyStmt ); |
---|
| 1061 | std::string adapterName = makeAdapterName( mangleName ); |
---|
[de62360d] | 1062 | return new FunctionDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, adapterType, adapterBody, false, false ); |
---|
[01aeade] | 1063 | } |
---|
[6c3744e] | 1064 | |
---|
[c29d9ce] | 1065 | void Pass1::passAdapters( ApplicationExpr * appExpr, FunctionType * functionType, const TyVarMap & exprTyVars ) { |
---|
[e497c1d] | 1066 | // collect a list of function types passed as parameters or implicit parameters (assertions) |
---|
[01aeade] | 1067 | std::list< DeclarationWithType *> ¶mList = functionType->get_parameters(); |
---|
| 1068 | std::list< FunctionType *> functions; |
---|
| 1069 | for ( std::list< TypeDecl *>::iterator tyVar = functionType->get_forall().begin(); tyVar != functionType->get_forall().end(); ++tyVar ) { |
---|
| 1070 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyVar)->get_assertions().begin(); assert != (*tyVar)->get_assertions().end(); ++assert ) { |
---|
| 1071 | findFunction( (*assert)->get_type(), functions, exprTyVars, needsAdapter ); |
---|
| 1072 | } // for |
---|
| 1073 | } // for |
---|
| 1074 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
---|
| 1075 | findFunction( (*arg)->get_type(), functions, exprTyVars, needsAdapter ); |
---|
| 1076 | } // for |
---|
[e497c1d] | 1077 | |
---|
[e56cfdb0] | 1078 | // parameter function types for which an appropriate adapter has been generated. we cannot use the types |
---|
| 1079 | // after applying substitutions, since two different parameter types may be unified to the same type |
---|
[01aeade] | 1080 | std::set< std::string > adaptersDone; |
---|
[e497c1d] | 1081 | |
---|
[01aeade] | 1082 | for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) { |
---|
[c29d9ce] | 1083 | FunctionType *originalFunction = (*funType)->clone(); |
---|
[01aeade] | 1084 | FunctionType *realFunction = (*funType)->clone(); |
---|
| 1085 | std::string mangleName = SymTab::Mangler::mangle( realFunction ); |
---|
[e497c1d] | 1086 | |
---|
[e56cfdb0] | 1087 | // only attempt to create an adapter or pass one as a parameter if we haven't already done so for this |
---|
| 1088 | // pre-substitution parameter function type. |
---|
[01aeade] | 1089 | if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) { |
---|
[e497c1d] | 1090 | adaptersDone.insert( adaptersDone.begin(), mangleName ); |
---|
[ae63a18] | 1091 | |
---|
[e56cfdb0] | 1092 | // apply substitution to type variables to figure out what the adapter's type should look like |
---|
[e497c1d] | 1093 | assert( env ); |
---|
| 1094 | env->apply( realFunction ); |
---|
[ae63a18] | 1095 | mangleName = SymTab::Mangler::mangle( realFunction ); |
---|
[bdf1954] | 1096 | mangleName += makePolyMonoSuffix( originalFunction, exprTyVars ); |
---|
[e497c1d] | 1097 | |
---|
[6635c74] | 1098 | typedef ScopedMap< std::string, DeclarationWithType* >::iterator AdapterIter; |
---|
| 1099 | AdapterIter adapter = adapters.find( mangleName ); |
---|
[e56cfdb0] | 1100 | if ( adapter == adapters.end() ) { |
---|
| 1101 | // adapter has not been created yet in the current scope, so define it |
---|
| 1102 | FunctionDecl *newAdapter = makeAdapter( *funType, realFunction, mangleName, exprTyVars ); |
---|
[6635c74] | 1103 | std::pair< AdapterIter, bool > answer = adapters.insert( std::pair< std::string, DeclarationWithType *>( mangleName, newAdapter ) ); |
---|
| 1104 | adapter = answer.first; |
---|
[e56cfdb0] | 1105 | stmtsToAdd.push_back( new DeclStmt( noLabels, newAdapter ) ); |
---|
[c29d9ce] | 1106 | } // if |
---|
[e56cfdb0] | 1107 | assert( adapter != adapters.end() ); |
---|
| 1108 | |
---|
| 1109 | // add the appropriate adapter as a parameter |
---|
| 1110 | appExpr->get_args().push_front( new VariableExpr( adapter->second ) ); |
---|
[01aeade] | 1111 | } // if |
---|
| 1112 | } // for |
---|
[e56cfdb0] | 1113 | } // passAdapters |
---|
[6c3744e] | 1114 | |
---|
[78dd0da] | 1115 | Expression *makeIncrDecrExpr( ApplicationExpr *appExpr, Type *polyType, bool isIncr ) { |
---|
[01aeade] | 1116 | NameExpr *opExpr; |
---|
| 1117 | if ( isIncr ) { |
---|
| 1118 | opExpr = new NameExpr( "?+=?" ); |
---|
| 1119 | } else { |
---|
| 1120 | opExpr = new NameExpr( "?-=?" ); |
---|
[6c3744e] | 1121 | } // if |
---|
[01aeade] | 1122 | UntypedExpr *addAssign = new UntypedExpr( opExpr ); |
---|
| 1123 | if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) { |
---|
| 1124 | addAssign->get_args().push_back( address->get_arg() ); |
---|
| 1125 | } else { |
---|
| 1126 | addAssign->get_args().push_back( appExpr->get_args().front() ); |
---|
[6c3744e] | 1127 | } // if |
---|
[adc6781] | 1128 | addAssign->get_args().push_back( new NameExpr( sizeofName( mangleType( polyType ) ) ) ); |
---|
[01aeade] | 1129 | addAssign->get_results().front() = appExpr->get_results().front()->clone(); |
---|
| 1130 | if ( appExpr->get_env() ) { |
---|
| 1131 | addAssign->set_env( appExpr->get_env() ); |
---|
[6c3744e] | 1132 | appExpr->set_env( 0 ); |
---|
| 1133 | } // if |
---|
[01aeade] | 1134 | appExpr->get_args().clear(); |
---|
| 1135 | delete appExpr; |
---|
| 1136 | return addAssign; |
---|
| 1137 | } |
---|
| 1138 | |
---|
| 1139 | Expression *Pass1::handleIntrinsics( ApplicationExpr *appExpr ) { |
---|
| 1140 | if ( VariableExpr *varExpr = dynamic_cast< VariableExpr *>( appExpr->get_function() ) ) { |
---|
| 1141 | if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic ) { |
---|
| 1142 | if ( varExpr->get_var()->get_name() == "?[?]" ) { |
---|
| 1143 | assert( ! appExpr->get_results().empty() ); |
---|
| 1144 | assert( appExpr->get_args().size() == 2 ); |
---|
[ffad73a] | 1145 | Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), scopeTyVars, env ); |
---|
| 1146 | Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), scopeTyVars, env ); |
---|
[ae63a18] | 1147 | assert( ! baseType1 || ! baseType2 ); // the arguments cannot both be polymorphic pointers |
---|
[01aeade] | 1148 | UntypedExpr *ret = 0; |
---|
[ae63a18] | 1149 | if ( baseType1 || baseType2 ) { // one of the arguments is a polymorphic pointer |
---|
[01aeade] | 1150 | ret = new UntypedExpr( new NameExpr( "?+?" ) ); |
---|
| 1151 | } // if |
---|
[ffad73a] | 1152 | if ( baseType1 ) { |
---|
[01aeade] | 1153 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
| 1154 | multiply->get_args().push_back( appExpr->get_args().back() ); |
---|
[adc6781] | 1155 | multiply->get_args().push_back( new SizeofExpr( baseType1->clone() ) ); |
---|
[01aeade] | 1156 | ret->get_args().push_back( appExpr->get_args().front() ); |
---|
| 1157 | ret->get_args().push_back( multiply ); |
---|
[ffad73a] | 1158 | } else if ( baseType2 ) { |
---|
[01aeade] | 1159 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
| 1160 | multiply->get_args().push_back( appExpr->get_args().front() ); |
---|
[adc6781] | 1161 | multiply->get_args().push_back( new SizeofExpr( baseType2->clone() ) ); |
---|
[01aeade] | 1162 | ret->get_args().push_back( multiply ); |
---|
| 1163 | ret->get_args().push_back( appExpr->get_args().back() ); |
---|
| 1164 | } // if |
---|
[ffad73a] | 1165 | if ( baseType1 || baseType2 ) { |
---|
[01aeade] | 1166 | ret->get_results().push_front( appExpr->get_results().front()->clone() ); |
---|
| 1167 | if ( appExpr->get_env() ) { |
---|
| 1168 | ret->set_env( appExpr->get_env() ); |
---|
| 1169 | appExpr->set_env( 0 ); |
---|
| 1170 | } // if |
---|
| 1171 | appExpr->get_args().clear(); |
---|
| 1172 | delete appExpr; |
---|
| 1173 | return ret; |
---|
| 1174 | } // if |
---|
| 1175 | } else if ( varExpr->get_var()->get_name() == "*?" ) { |
---|
| 1176 | assert( ! appExpr->get_results().empty() ); |
---|
| 1177 | assert( ! appExpr->get_args().empty() ); |
---|
[ffad73a] | 1178 | if ( isPolyType( appExpr->get_results().front(), scopeTyVars, env ) ) { |
---|
[01aeade] | 1179 | Expression *ret = appExpr->get_args().front(); |
---|
| 1180 | delete ret->get_results().front(); |
---|
| 1181 | ret->get_results().front() = appExpr->get_results().front()->clone(); |
---|
| 1182 | if ( appExpr->get_env() ) { |
---|
| 1183 | ret->set_env( appExpr->get_env() ); |
---|
| 1184 | appExpr->set_env( 0 ); |
---|
| 1185 | } // if |
---|
| 1186 | appExpr->get_args().clear(); |
---|
| 1187 | delete appExpr; |
---|
| 1188 | return ret; |
---|
| 1189 | } // if |
---|
| 1190 | } else if ( varExpr->get_var()->get_name() == "?++" || varExpr->get_var()->get_name() == "?--" ) { |
---|
| 1191 | assert( ! appExpr->get_results().empty() ); |
---|
| 1192 | assert( appExpr->get_args().size() == 1 ); |
---|
[ffad73a] | 1193 | if ( Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ) ) { |
---|
[01aeade] | 1194 | Type *tempType = appExpr->get_results().front()->clone(); |
---|
| 1195 | if ( env ) { |
---|
| 1196 | env->apply( tempType ); |
---|
| 1197 | } // if |
---|
| 1198 | ObjectDecl *newObj = makeTemporary( tempType ); |
---|
| 1199 | VariableExpr *tempExpr = new VariableExpr( newObj ); |
---|
| 1200 | UntypedExpr *assignExpr = new UntypedExpr( new NameExpr( "?=?" ) ); |
---|
| 1201 | assignExpr->get_args().push_back( tempExpr->clone() ); |
---|
| 1202 | if ( AddressExpr *address = dynamic_cast< AddressExpr *>( appExpr->get_args().front() ) ) { |
---|
| 1203 | assignExpr->get_args().push_back( address->get_arg()->clone() ); |
---|
| 1204 | } else { |
---|
| 1205 | assignExpr->get_args().push_back( appExpr->get_args().front()->clone() ); |
---|
| 1206 | } // if |
---|
[ffad73a] | 1207 | CommaExpr *firstComma = new CommaExpr( assignExpr, makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "?++" ) ); |
---|
[01aeade] | 1208 | return new CommaExpr( firstComma, tempExpr ); |
---|
| 1209 | } // if |
---|
| 1210 | } else if ( varExpr->get_var()->get_name() == "++?" || varExpr->get_var()->get_name() == "--?" ) { |
---|
| 1211 | assert( ! appExpr->get_results().empty() ); |
---|
| 1212 | assert( appExpr->get_args().size() == 1 ); |
---|
[ffad73a] | 1213 | if ( Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ) ) { |
---|
| 1214 | return makeIncrDecrExpr( appExpr, baseType, varExpr->get_var()->get_name() == "++?" ); |
---|
[01aeade] | 1215 | } // if |
---|
| 1216 | } else if ( varExpr->get_var()->get_name() == "?+?" || varExpr->get_var()->get_name() == "?-?" ) { |
---|
| 1217 | assert( ! appExpr->get_results().empty() ); |
---|
| 1218 | assert( appExpr->get_args().size() == 2 ); |
---|
[ffad73a] | 1219 | Type *baseType1 = isPolyPtr( appExpr->get_args().front()->get_results().front(), scopeTyVars, env ); |
---|
| 1220 | Type *baseType2 = isPolyPtr( appExpr->get_args().back()->get_results().front(), scopeTyVars, env ); |
---|
| 1221 | if ( baseType1 && baseType2 ) { |
---|
[01aeade] | 1222 | UntypedExpr *divide = new UntypedExpr( new NameExpr( "?/?" ) ); |
---|
| 1223 | divide->get_args().push_back( appExpr ); |
---|
[adc6781] | 1224 | divide->get_args().push_back( new SizeofExpr( baseType1->clone() ) ); |
---|
[01aeade] | 1225 | divide->get_results().push_front( appExpr->get_results().front()->clone() ); |
---|
| 1226 | if ( appExpr->get_env() ) { |
---|
| 1227 | divide->set_env( appExpr->get_env() ); |
---|
| 1228 | appExpr->set_env( 0 ); |
---|
| 1229 | } // if |
---|
| 1230 | return divide; |
---|
[ffad73a] | 1231 | } else if ( baseType1 ) { |
---|
[01aeade] | 1232 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
| 1233 | multiply->get_args().push_back( appExpr->get_args().back() ); |
---|
[adc6781] | 1234 | multiply->get_args().push_back( new SizeofExpr( baseType1->clone() ) ); |
---|
[01aeade] | 1235 | appExpr->get_args().back() = multiply; |
---|
[ffad73a] | 1236 | } else if ( baseType2 ) { |
---|
[01aeade] | 1237 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
| 1238 | multiply->get_args().push_back( appExpr->get_args().front() ); |
---|
[adc6781] | 1239 | multiply->get_args().push_back( new SizeofExpr( baseType2->clone() ) ); |
---|
[01aeade] | 1240 | appExpr->get_args().front() = multiply; |
---|
| 1241 | } // if |
---|
| 1242 | } else if ( varExpr->get_var()->get_name() == "?+=?" || varExpr->get_var()->get_name() == "?-=?" ) { |
---|
| 1243 | assert( ! appExpr->get_results().empty() ); |
---|
| 1244 | assert( appExpr->get_args().size() == 2 ); |
---|
[ffad73a] | 1245 | Type *baseType = isPolyPtr( appExpr->get_results().front(), scopeTyVars, env ); |
---|
| 1246 | if ( baseType ) { |
---|
[01aeade] | 1247 | UntypedExpr *multiply = new UntypedExpr( new NameExpr( "?*?" ) ); |
---|
| 1248 | multiply->get_args().push_back( appExpr->get_args().back() ); |
---|
[adc6781] | 1249 | multiply->get_args().push_back( new SizeofExpr( baseType->clone() ) ); |
---|
[01aeade] | 1250 | appExpr->get_args().back() = multiply; |
---|
| 1251 | } // if |
---|
| 1252 | } // if |
---|
| 1253 | return appExpr; |
---|
| 1254 | } // if |
---|
[6c3744e] | 1255 | } // if |
---|
[01aeade] | 1256 | return 0; |
---|
| 1257 | } |
---|
[6c3744e] | 1258 | |
---|
[01aeade] | 1259 | Expression *Pass1::mutate( ApplicationExpr *appExpr ) { |
---|
[e56cfdb0] | 1260 | // std::cerr << "mutate appExpr: "; |
---|
| 1261 | // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) { |
---|
| 1262 | // std::cerr << i->first << " "; |
---|
| 1263 | // } |
---|
| 1264 | // std::cerr << "\n"; |
---|
[01aeade] | 1265 | bool oldUseRetval = useRetval; |
---|
| 1266 | useRetval = false; |
---|
| 1267 | appExpr->get_function()->acceptMutator( *this ); |
---|
| 1268 | mutateAll( appExpr->get_args(), *this ); |
---|
| 1269 | useRetval = oldUseRetval; |
---|
[ae63a18] | 1270 | |
---|
[01aeade] | 1271 | assert( ! appExpr->get_function()->get_results().empty() ); |
---|
| 1272 | PointerType *pointer = dynamic_cast< PointerType *>( appExpr->get_function()->get_results().front() ); |
---|
| 1273 | assert( pointer ); |
---|
| 1274 | FunctionType *function = dynamic_cast< FunctionType *>( pointer->get_base() ); |
---|
| 1275 | assert( function ); |
---|
[ae63a18] | 1276 | |
---|
[01aeade] | 1277 | if ( Expression *newExpr = handleIntrinsics( appExpr ) ) { |
---|
| 1278 | return newExpr; |
---|
| 1279 | } // if |
---|
[ae63a18] | 1280 | |
---|
[01aeade] | 1281 | Expression *ret = appExpr; |
---|
[ae63a18] | 1282 | |
---|
[01aeade] | 1283 | std::list< Expression *>::iterator arg = appExpr->get_args().begin(); |
---|
| 1284 | std::list< Expression *>::iterator paramBegin = appExpr->get_args().begin(); |
---|
[ae63a18] | 1285 | |
---|
[bfae637] | 1286 | TyVarMap exprTyVars( (TypeDecl::Kind)-1 ); |
---|
[5c52b06] | 1287 | makeTyVarMap( function, exprTyVars ); |
---|
[dc12481] | 1288 | ReferenceToType *polyRetType = isPolyRet( function ); |
---|
[5c52b06] | 1289 | |
---|
[dc12481] | 1290 | if ( polyRetType ) { |
---|
[5c52b06] | 1291 | ret = addPolyRetParam( appExpr, function, polyRetType, arg ); |
---|
[01aeade] | 1292 | } else if ( needsAdapter( function, scopeTyVars ) ) { |
---|
[e56cfdb0] | 1293 | // std::cerr << "needs adapter: "; |
---|
| 1294 | // for ( TyVarMap::iterator i = scopeTyVars.begin(); i != scopeTyVars.end(); ++i ) { |
---|
| 1295 | // std::cerr << i->first << " "; |
---|
| 1296 | // } |
---|
| 1297 | // std::cerr << "\n"; |
---|
[01aeade] | 1298 | // change the application so it calls the adapter rather than the passed function |
---|
| 1299 | ret = applyAdapter( appExpr, function, arg, scopeTyVars ); |
---|
| 1300 | } // if |
---|
| 1301 | arg = appExpr->get_args().begin(); |
---|
[ae63a18] | 1302 | |
---|
[5c52b06] | 1303 | passTypeVars( appExpr, polyRetType, arg, exprTyVars ); |
---|
[01aeade] | 1304 | addInferredParams( appExpr, function, arg, exprTyVars ); |
---|
[51b7345] | 1305 | |
---|
[01aeade] | 1306 | arg = paramBegin; |
---|
[ae63a18] | 1307 | |
---|
[01aeade] | 1308 | boxParams( appExpr, function, arg, exprTyVars ); |
---|
| 1309 | passAdapters( appExpr, function, exprTyVars ); |
---|
[6c3744e] | 1310 | |
---|
[01aeade] | 1311 | return ret; |
---|
| 1312 | } |
---|
[6c3744e] | 1313 | |
---|
[01aeade] | 1314 | Expression *Pass1::mutate( UntypedExpr *expr ) { |
---|
[ffad73a] | 1315 | if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), scopeTyVars, env ) ) { |
---|
[01aeade] | 1316 | if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) { |
---|
| 1317 | if ( name->get_name() == "*?" ) { |
---|
| 1318 | Expression *ret = expr->get_args().front(); |
---|
| 1319 | expr->get_args().clear(); |
---|
| 1320 | delete expr; |
---|
| 1321 | return ret->acceptMutator( *this ); |
---|
| 1322 | } // if |
---|
| 1323 | } // if |
---|
| 1324 | } // if |
---|
| 1325 | return PolyMutator::mutate( expr ); |
---|
| 1326 | } |
---|
[6c3744e] | 1327 | |
---|
[01aeade] | 1328 | Expression *Pass1::mutate( AddressExpr *addrExpr ) { |
---|
| 1329 | assert( ! addrExpr->get_arg()->get_results().empty() ); |
---|
[cf16f94] | 1330 | |
---|
| 1331 | bool needs = false; |
---|
| 1332 | if ( UntypedExpr *expr = dynamic_cast< UntypedExpr *>( addrExpr->get_arg() ) ) { |
---|
[5f6c42c] | 1333 | if ( ! expr->get_results().empty() && isPolyType( expr->get_results().front(), scopeTyVars, env ) ) { |
---|
[cf16f94] | 1334 | if ( NameExpr *name = dynamic_cast< NameExpr *>( expr->get_function() ) ) { |
---|
| 1335 | if ( name->get_name() == "*?" ) { |
---|
| 1336 | if ( ApplicationExpr * appExpr = dynamic_cast< ApplicationExpr * >( expr->get_args().front() ) ) { |
---|
| 1337 | assert( ! appExpr->get_function()->get_results().empty() ); |
---|
| 1338 | PointerType *pointer = dynamic_cast< PointerType *>( appExpr->get_function()->get_results().front() ); |
---|
| 1339 | assert( pointer ); |
---|
| 1340 | FunctionType *function = dynamic_cast< FunctionType *>( pointer->get_base() ); |
---|
| 1341 | assert( function ); |
---|
| 1342 | needs = needsAdapter( function, scopeTyVars ); |
---|
| 1343 | } // if |
---|
| 1344 | } // if |
---|
| 1345 | } // if |
---|
| 1346 | } // if |
---|
| 1347 | } // if |
---|
[01aeade] | 1348 | addrExpr->set_arg( mutateExpression( addrExpr->get_arg() ) ); |
---|
[5f6c42c] | 1349 | if ( isPolyType( addrExpr->get_arg()->get_results().front(), scopeTyVars, env ) || needs ) { |
---|
[01aeade] | 1350 | Expression *ret = addrExpr->get_arg(); |
---|
| 1351 | delete ret->get_results().front(); |
---|
| 1352 | ret->get_results().front() = addrExpr->get_results().front()->clone(); |
---|
| 1353 | addrExpr->set_arg( 0 ); |
---|
| 1354 | delete addrExpr; |
---|
| 1355 | return ret; |
---|
| 1356 | } else { |
---|
| 1357 | return addrExpr; |
---|
| 1358 | } // if |
---|
| 1359 | } |
---|
[6c3744e] | 1360 | |
---|
[b10c9959] | 1361 | /// Wraps a function declaration in a new pointer-to-function variable expression |
---|
| 1362 | VariableExpr *wrapFunctionDecl( DeclarationWithType *functionDecl ) { |
---|
| 1363 | // line below cloned from FixFunction.cc |
---|
| 1364 | ObjectDecl *functionObj = new ObjectDecl( functionDecl->get_name(), functionDecl->get_storageClass(), functionDecl->get_linkage(), 0, |
---|
| 1365 | new PointerType( Type::Qualifiers(), functionDecl->get_type()->clone() ), 0 ); |
---|
| 1366 | functionObj->set_mangleName( functionDecl->get_mangleName() ); |
---|
| 1367 | return new VariableExpr( functionObj ); |
---|
| 1368 | } |
---|
[70a06f6] | 1369 | |
---|
[cf16f94] | 1370 | Statement * Pass1::mutate( ReturnStmt *returnStmt ) { |
---|
| 1371 | if ( retval && returnStmt->get_expr() ) { |
---|
| 1372 | assert( ! returnStmt->get_expr()->get_results().empty() ); |
---|
| 1373 | // ***** Code Removal ***** After introducing a temporary variable for all return expressions, the following code appears superfluous. |
---|
| 1374 | // if ( returnStmt->get_expr()->get_results().front()->get_isLvalue() ) { |
---|
[ae63a18] | 1375 | // by this point, a cast expr on a polymorphic return value is redundant |
---|
[cf16f94] | 1376 | while ( CastExpr *castExpr = dynamic_cast< CastExpr *>( returnStmt->get_expr() ) ) { |
---|
| 1377 | returnStmt->set_expr( castExpr->get_arg() ); |
---|
| 1378 | returnStmt->get_expr()->set_env( castExpr->get_env() ); |
---|
| 1379 | castExpr->set_env( 0 ); |
---|
| 1380 | castExpr->set_arg( 0 ); |
---|
| 1381 | delete castExpr; |
---|
[5f6c42c] | 1382 | } //while |
---|
[1194734] | 1383 | |
---|
| 1384 | // find assignment operator for (polymorphic) return type |
---|
[b10c9959] | 1385 | ApplicationExpr *assignExpr = 0; |
---|
[1194734] | 1386 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( retval->get_type() ) ) { |
---|
[b10c9959] | 1387 | // find assignment operator for type variable |
---|
[63c0dbf] | 1388 | ScopedMap< std::string, DeclarationWithType *>::const_iterator assignIter = assignOps.find( typeInst->get_name() ); |
---|
[1194734] | 1389 | if ( assignIter == assignOps.end() ) { |
---|
| 1390 | throw SemanticError( "Attempt to return dtype or ftype object in ", returnStmt->get_expr() ); |
---|
| 1391 | } // if |
---|
[b10c9959] | 1392 | assignExpr = new ApplicationExpr( new VariableExpr( assignIter->second ) ); |
---|
[1194734] | 1393 | } else if ( ReferenceToType *refType = dynamic_cast< ReferenceToType *>( retval->get_type() ) ) { |
---|
[b10c9959] | 1394 | // find assignment operator for generic type |
---|
[dc12481] | 1395 | DeclarationWithType *functionDecl = scopedAssignOps.find( refType ); |
---|
| 1396 | if ( ! functionDecl ) { |
---|
[1194734] | 1397 | throw SemanticError( "Attempt to return dtype or ftype generic object in ", returnStmt->get_expr() ); |
---|
| 1398 | } |
---|
[b10c9959] | 1399 | |
---|
| 1400 | // wrap it up in an application expression |
---|
| 1401 | assignExpr = new ApplicationExpr( wrapFunctionDecl( functionDecl ) ); |
---|
| 1402 | assignExpr->set_env( env->clone() ); |
---|
| 1403 | |
---|
| 1404 | // find each of its needed secondary assignment operators |
---|
| 1405 | std::list< Expression* > &tyParams = refType->get_parameters(); |
---|
| 1406 | std::list< TypeDecl* > &forallParams = functionDecl->get_type()->get_forall(); |
---|
| 1407 | std::list< Expression* >::const_iterator tyIt = tyParams.begin(); |
---|
| 1408 | std::list< TypeDecl* >::const_iterator forallIt = forallParams.begin(); |
---|
| 1409 | for ( ; tyIt != tyParams.end() && forallIt != forallParams.end(); ++tyIt, ++forallIt ) { |
---|
[ae7014e] | 1410 | // Add appropriate mapping to assignment expression environment |
---|
[b10c9959] | 1411 | TypeExpr *formalTypeExpr = dynamic_cast< TypeExpr* >( *tyIt ); |
---|
| 1412 | assert( formalTypeExpr && "type parameters must be type expressions" ); |
---|
| 1413 | Type *formalType = formalTypeExpr->get_type(); |
---|
[ae7014e] | 1414 | assignExpr->get_env()->add( (*forallIt)->get_name(), formalType ); |
---|
| 1415 | |
---|
| 1416 | // skip types with no assign op (ftype/dtype) |
---|
| 1417 | if ( (*forallIt)->get_kind() != TypeDecl::Any ) continue; |
---|
| 1418 | |
---|
| 1419 | // find assignment operator for formal type |
---|
[b10c9959] | 1420 | DeclarationWithType *assertAssign = 0; |
---|
| 1421 | if ( TypeInstType *formalTypeInstType = dynamic_cast< TypeInstType* >( formalType ) ) { |
---|
[63c0dbf] | 1422 | ScopedMap< std::string, DeclarationWithType *>::const_iterator assertAssignIt = assignOps.find( formalTypeInstType->get_name() ); |
---|
[b10c9959] | 1423 | if ( assertAssignIt == assignOps.end() ) { |
---|
| 1424 | throw SemanticError( "No assignment operation found for ", formalTypeInstType ); |
---|
| 1425 | } |
---|
| 1426 | assertAssign = assertAssignIt->second; |
---|
[dc12481] | 1427 | } else { |
---|
| 1428 | assertAssign = scopedAssignOps.find( formalType ); |
---|
| 1429 | if ( ! assertAssign ) { |
---|
| 1430 | throw SemanticError( "No assignment operation found for ", formalType ); |
---|
[b10c9959] | 1431 | } |
---|
[dc12481] | 1432 | } |
---|
[b10c9959] | 1433 | |
---|
[ae7014e] | 1434 | // add inferred parameter for field assignment operator to assignment expression |
---|
| 1435 | std::list< DeclarationWithType* > &asserts = (*forallIt)->get_assertions(); |
---|
| 1436 | assert( ! asserts.empty() && "Type param needs assignment operator assertion" ); |
---|
| 1437 | DeclarationWithType *actualDecl = asserts.front(); |
---|
[b10c9959] | 1438 | assignExpr->get_inferParams()[ actualDecl->get_uniqueId() ] |
---|
| 1439 | = ParamEntry( assertAssign->get_uniqueId(), assertAssign->get_type()->clone(), actualDecl->get_type()->clone(), wrapFunctionDecl( assertAssign ) ); |
---|
| 1440 | } |
---|
[1194734] | 1441 | } |
---|
[b10c9959] | 1442 | assert( assignExpr ); |
---|
[1194734] | 1443 | |
---|
| 1444 | // replace return statement with appropriate assignment to out parameter |
---|
[cf16f94] | 1445 | Expression *retParm = new NameExpr( retval->get_name() ); |
---|
| 1446 | retParm->get_results().push_back( new PointerType( Type::Qualifiers(), retval->get_type()->clone() ) ); |
---|
| 1447 | assignExpr->get_args().push_back( retParm ); |
---|
| 1448 | assignExpr->get_args().push_back( returnStmt->get_expr() ); |
---|
| 1449 | stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( assignExpr ) ) ); |
---|
| 1450 | // } else { |
---|
| 1451 | // useRetval = true; |
---|
| 1452 | // stmtsToAdd.push_back( new ExprStmt( noLabels, mutateExpression( returnStmt->get_expr() ) ) ); |
---|
| 1453 | // useRetval = false; |
---|
| 1454 | // } // if |
---|
| 1455 | returnStmt->set_expr( 0 ); |
---|
[01aeade] | 1456 | } else { |
---|
[cf16f94] | 1457 | returnStmt->set_expr( mutateExpression( returnStmt->get_expr() ) ); |
---|
[01aeade] | 1458 | } // if |
---|
[cf16f94] | 1459 | return returnStmt; |
---|
[01aeade] | 1460 | } |
---|
[6c3744e] | 1461 | |
---|
[01aeade] | 1462 | Type * Pass1::mutate( PointerType *pointerType ) { |
---|
[6f49cdf] | 1463 | scopeTyVars.beginScope(); |
---|
[01aeade] | 1464 | makeTyVarMap( pointerType, scopeTyVars ); |
---|
[ae63a18] | 1465 | |
---|
[01aeade] | 1466 | Type *ret = Mutator::mutate( pointerType ); |
---|
[ae63a18] | 1467 | |
---|
[6f49cdf] | 1468 | scopeTyVars.endScope(); |
---|
[01aeade] | 1469 | return ret; |
---|
| 1470 | } |
---|
[6c3744e] | 1471 | |
---|
[01aeade] | 1472 | Type * Pass1::mutate( FunctionType *functionType ) { |
---|
[6f49cdf] | 1473 | scopeTyVars.beginScope(); |
---|
[01aeade] | 1474 | makeTyVarMap( functionType, scopeTyVars ); |
---|
[ae63a18] | 1475 | |
---|
[01aeade] | 1476 | Type *ret = Mutator::mutate( functionType ); |
---|
[ae63a18] | 1477 | |
---|
[6f49cdf] | 1478 | scopeTyVars.endScope(); |
---|
[01aeade] | 1479 | return ret; |
---|
| 1480 | } |
---|
[51b7345] | 1481 | |
---|
[01aeade] | 1482 | void Pass1::doBeginScope() { |
---|
[6635c74] | 1483 | adapters.beginScope(); |
---|
[1194734] | 1484 | scopedAssignOps.beginScope(); |
---|
[01aeade] | 1485 | } |
---|
[b1a6d6b] | 1486 | |
---|
[01aeade] | 1487 | void Pass1::doEndScope() { |
---|
[6635c74] | 1488 | adapters.endScope(); |
---|
[1194734] | 1489 | scopedAssignOps.endScope(); |
---|
[01aeade] | 1490 | } |
---|
[51b7345] | 1491 | |
---|
| 1492 | ////////////////////////////////////////// Pass2 //////////////////////////////////////////////////// |
---|
| 1493 | |
---|
[01aeade] | 1494 | void Pass2::addAdapters( FunctionType *functionType ) { |
---|
| 1495 | std::list< DeclarationWithType *> ¶mList = functionType->get_parameters(); |
---|
| 1496 | std::list< FunctionType *> functions; |
---|
| 1497 | for ( std::list< DeclarationWithType *>::iterator arg = paramList.begin(); arg != paramList.end(); ++arg ) { |
---|
| 1498 | Type *orig = (*arg)->get_type(); |
---|
| 1499 | findAndReplaceFunction( orig, functions, scopeTyVars, needsAdapter ); |
---|
| 1500 | (*arg)->set_type( orig ); |
---|
| 1501 | } |
---|
| 1502 | std::set< std::string > adaptersDone; |
---|
| 1503 | for ( std::list< FunctionType *>::iterator funType = functions.begin(); funType != functions.end(); ++funType ) { |
---|
[bdf1954] | 1504 | std::string mangleName = mangleAdapterName( *funType, scopeTyVars ); |
---|
[01aeade] | 1505 | if ( adaptersDone.find( mangleName ) == adaptersDone.end() ) { |
---|
| 1506 | std::string adapterName = makeAdapterName( mangleName ); |
---|
[68cd1ce] | 1507 | paramList.push_front( new ObjectDecl( adapterName, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new PointerType( Type::Qualifiers(), makeAdapterType( *funType, scopeTyVars ) ), 0 ) ); |
---|
[01aeade] | 1508 | adaptersDone.insert( adaptersDone.begin(), mangleName ); |
---|
| 1509 | } |
---|
| 1510 | } |
---|
[5f6c42c] | 1511 | // deleteAll( functions ); |
---|
[01aeade] | 1512 | } |
---|
[6c3744e] | 1513 | |
---|
[01aeade] | 1514 | template< typename DeclClass > |
---|
| 1515 | DeclClass * Pass2::handleDecl( DeclClass *decl, Type *type ) { |
---|
| 1516 | DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) ); |
---|
[6c3744e] | 1517 | |
---|
[01aeade] | 1518 | return ret; |
---|
| 1519 | } |
---|
[6c3744e] | 1520 | |
---|
[01aeade] | 1521 | DeclarationWithType * Pass2::mutate( FunctionDecl *functionDecl ) { |
---|
| 1522 | return handleDecl( functionDecl, functionDecl->get_functionType() ); |
---|
| 1523 | } |
---|
[6c3744e] | 1524 | |
---|
[01aeade] | 1525 | ObjectDecl * Pass2::mutate( ObjectDecl *objectDecl ) { |
---|
| 1526 | return handleDecl( objectDecl, objectDecl->get_type() ); |
---|
| 1527 | } |
---|
[6c3744e] | 1528 | |
---|
[01aeade] | 1529 | TypeDecl * Pass2::mutate( TypeDecl *typeDecl ) { |
---|
| 1530 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
| 1531 | if ( typeDecl->get_base() ) { |
---|
| 1532 | return handleDecl( typeDecl, typeDecl->get_base() ); |
---|
| 1533 | } else { |
---|
| 1534 | return Mutator::mutate( typeDecl ); |
---|
| 1535 | } |
---|
| 1536 | } |
---|
[6c3744e] | 1537 | |
---|
[01aeade] | 1538 | TypedefDecl * Pass2::mutate( TypedefDecl *typedefDecl ) { |
---|
| 1539 | return handleDecl( typedefDecl, typedefDecl->get_base() ); |
---|
| 1540 | } |
---|
[6c3744e] | 1541 | |
---|
[01aeade] | 1542 | Type * Pass2::mutate( PointerType *pointerType ) { |
---|
[6f49cdf] | 1543 | scopeTyVars.beginScope(); |
---|
[01aeade] | 1544 | makeTyVarMap( pointerType, scopeTyVars ); |
---|
[ae63a18] | 1545 | |
---|
[01aeade] | 1546 | Type *ret = Mutator::mutate( pointerType ); |
---|
[ae63a18] | 1547 | |
---|
[6f49cdf] | 1548 | scopeTyVars.endScope(); |
---|
[01aeade] | 1549 | return ret; |
---|
| 1550 | } |
---|
[6c3744e] | 1551 | |
---|
[01aeade] | 1552 | Type *Pass2::mutate( FunctionType *funcType ) { |
---|
[6f49cdf] | 1553 | scopeTyVars.beginScope(); |
---|
[01aeade] | 1554 | makeTyVarMap( funcType, scopeTyVars ); |
---|
[7754cde] | 1555 | |
---|
| 1556 | // move polymorphic return type to parameter list |
---|
[aadc9a4] | 1557 | if ( isPolyRet( funcType ) ) { |
---|
[01aeade] | 1558 | DeclarationWithType *ret = funcType->get_returnVals().front(); |
---|
| 1559 | ret->set_type( new PointerType( Type::Qualifiers(), ret->get_type() ) ); |
---|
| 1560 | funcType->get_parameters().push_front( ret ); |
---|
| 1561 | funcType->get_returnVals().pop_front(); |
---|
| 1562 | } |
---|
[7754cde] | 1563 | |
---|
| 1564 | // add size/align and assertions for type parameters to parameter list |
---|
[01aeade] | 1565 | std::list< DeclarationWithType *>::iterator last = funcType->get_parameters().begin(); |
---|
| 1566 | std::list< DeclarationWithType *> inferredParams; |
---|
[78dd0da] | 1567 | ObjectDecl newObj( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), 0 ); |
---|
[05d47278] | 1568 | ObjectDecl newPtr( "", DeclarationNode::NoStorageClass, LinkageSpec::C, 0, |
---|
| 1569 | new PointerType( Type::Qualifiers(), new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ) ), 0 ); |
---|
[01aeade] | 1570 | for ( std::list< TypeDecl *>::const_iterator tyParm = funcType->get_forall().begin(); tyParm != funcType->get_forall().end(); ++tyParm ) { |
---|
[db0b3ce] | 1571 | ObjectDecl *sizeParm, *alignParm; |
---|
| 1572 | // add all size and alignment parameters to parameter list |
---|
[01aeade] | 1573 | if ( (*tyParm)->get_kind() == TypeDecl::Any ) { |
---|
[78dd0da] | 1574 | TypeInstType parmType( Type::Qualifiers(), (*tyParm)->get_name(), *tyParm ); |
---|
[adc6781] | 1575 | std::string parmName = mangleType( &parmType ); |
---|
[ae63a18] | 1576 | |
---|
[78dd0da] | 1577 | sizeParm = newObj.clone(); |
---|
[adc6781] | 1578 | sizeParm->set_name( sizeofName( parmName ) ); |
---|
[db0b3ce] | 1579 | last = funcType->get_parameters().insert( last, sizeParm ); |
---|
| 1580 | ++last; |
---|
[78dd0da] | 1581 | |
---|
| 1582 | alignParm = newObj.clone(); |
---|
[adc6781] | 1583 | alignParm->set_name( alignofName( parmName ) ); |
---|
[db0b3ce] | 1584 | last = funcType->get_parameters().insert( last, alignParm ); |
---|
[01aeade] | 1585 | ++last; |
---|
| 1586 | } |
---|
[e56cfdb0] | 1587 | // move all assertions into parameter list |
---|
[01aeade] | 1588 | for ( std::list< DeclarationWithType *>::iterator assert = (*tyParm)->get_assertions().begin(); assert != (*tyParm)->get_assertions().end(); ++assert ) { |
---|
[f8b961b] | 1589 | // *assert = (*assert)->acceptMutator( *this ); |
---|
[01aeade] | 1590 | inferredParams.push_back( *assert ); |
---|
| 1591 | } |
---|
| 1592 | (*tyParm)->get_assertions().clear(); |
---|
| 1593 | } |
---|
[7754cde] | 1594 | |
---|
[5c52b06] | 1595 | // add size/align for generic parameter types to parameter list |
---|
[b18b0b5] | 1596 | std::set< std::string > seenTypes; // sizeofName for generic types we've seen |
---|
[7754cde] | 1597 | for ( std::list< DeclarationWithType* >::const_iterator fnParm = last; fnParm != funcType->get_parameters().end(); ++fnParm ) { |
---|
[4b8f918] | 1598 | Type *polyType = isPolyType( (*fnParm)->get_type(), scopeTyVars ); |
---|
| 1599 | if ( polyType && ! dynamic_cast< TypeInstType* >( polyType ) ) { |
---|
| 1600 | std::string typeName = mangleType( polyType ); |
---|
[adc6781] | 1601 | if ( seenTypes.count( typeName ) ) continue; |
---|
[ae63a18] | 1602 | |
---|
[05d47278] | 1603 | ObjectDecl *sizeParm, *alignParm, *offsetParm; |
---|
[7754cde] | 1604 | sizeParm = newObj.clone(); |
---|
[adc6781] | 1605 | sizeParm->set_name( sizeofName( typeName ) ); |
---|
[7754cde] | 1606 | last = funcType->get_parameters().insert( last, sizeParm ); |
---|
| 1607 | ++last; |
---|
| 1608 | |
---|
| 1609 | alignParm = newObj.clone(); |
---|
[adc6781] | 1610 | alignParm->set_name( alignofName( typeName ) ); |
---|
[7754cde] | 1611 | last = funcType->get_parameters().insert( last, alignParm ); |
---|
| 1612 | ++last; |
---|
| 1613 | |
---|
[4b8f918] | 1614 | if ( StructInstType *polyBaseStruct = dynamic_cast< StructInstType* >( polyType ) ) { |
---|
[89173242] | 1615 | // NOTE zero-length arrays are illegal in C, so empty structs have no offset array |
---|
| 1616 | if ( ! polyBaseStruct->get_baseStruct()->get_members().empty() ) { |
---|
| 1617 | offsetParm = newPtr.clone(); |
---|
[adc6781] | 1618 | offsetParm->set_name( offsetofName( typeName ) ); |
---|
[89173242] | 1619 | last = funcType->get_parameters().insert( last, offsetParm ); |
---|
| 1620 | ++last; |
---|
| 1621 | } |
---|
[05d47278] | 1622 | } |
---|
| 1623 | |
---|
[adc6781] | 1624 | seenTypes.insert( typeName ); |
---|
[7754cde] | 1625 | } |
---|
| 1626 | } |
---|
| 1627 | |
---|
| 1628 | // splice assertion parameters into parameter list |
---|
[01aeade] | 1629 | funcType->get_parameters().splice( last, inferredParams ); |
---|
| 1630 | addAdapters( funcType ); |
---|
| 1631 | mutateAll( funcType->get_returnVals(), *this ); |
---|
| 1632 | mutateAll( funcType->get_parameters(), *this ); |
---|
[ae63a18] | 1633 | |
---|
[6f49cdf] | 1634 | scopeTyVars.endScope(); |
---|
[01aeade] | 1635 | return funcType; |
---|
| 1636 | } |
---|
[51b7345] | 1637 | |
---|
[4e284ea6] | 1638 | //////////////////////////////////////// GenericInstantiator ////////////////////////////////////////////////// |
---|
| 1639 | |
---|
| 1640 | /// Makes substitutions of params into baseParams; returns true if all parameters substituted for a concrete type |
---|
| 1641 | bool makeSubstitutions( const std::list< TypeDecl* >& baseParams, const std::list< Expression* >& params, std::list< TypeExpr* >& out ) { |
---|
| 1642 | bool allConcrete = true; // will finish the substitution list even if they're not all concrete |
---|
| 1643 | |
---|
| 1644 | // substitute concrete types for given parameters, and incomplete types for placeholders |
---|
| 1645 | std::list< TypeDecl* >::const_iterator baseParam = baseParams.begin(); |
---|
| 1646 | std::list< Expression* >::const_iterator param = params.begin(); |
---|
| 1647 | for ( ; baseParam != baseParams.end() && param != params.end(); ++baseParam, ++param ) { |
---|
| 1648 | // switch ( (*baseParam)->get_kind() ) { |
---|
| 1649 | // case TypeDecl::Any: { // any type is a valid substitution here; complete types can be used to instantiate generics |
---|
| 1650 | TypeExpr *paramType = dynamic_cast< TypeExpr* >( *param ); |
---|
| 1651 | assert(paramType && "Aggregate parameters should be type expressions"); |
---|
| 1652 | out.push_back( paramType->clone() ); |
---|
| 1653 | // check that the substituted type isn't a type variable itself |
---|
| 1654 | if ( dynamic_cast< TypeInstType* >( paramType->get_type() ) ) { |
---|
| 1655 | allConcrete = false; |
---|
| 1656 | } |
---|
| 1657 | // break; |
---|
| 1658 | // } |
---|
| 1659 | // case TypeDecl::Dtype: // dtype can be consistently replaced with void [only pointers, which become void*] |
---|
| 1660 | // out.push_back( new TypeExpr( new VoidType( Type::Qualifiers() ) ) ); |
---|
| 1661 | // break; |
---|
| 1662 | // case TypeDecl::Ftype: // pointer-to-ftype can be consistently replaced with void (*)(void) [similar to dtype] |
---|
| 1663 | // out.push_back( new TypeExpr( new FunctionType( Type::Qualifiers(), false ) ) ); |
---|
| 1664 | // break; |
---|
| 1665 | // } |
---|
| 1666 | } |
---|
| 1667 | |
---|
| 1668 | // if any parameters left over, not done |
---|
| 1669 | if ( baseParam != baseParams.end() ) return false; |
---|
| 1670 | // // if not enough parameters given, substitute remaining incomplete types for placeholders |
---|
| 1671 | // for ( ; baseParam != baseParams.end(); ++baseParam ) { |
---|
| 1672 | // switch ( (*baseParam)->get_kind() ) { |
---|
| 1673 | // case TypeDecl::Any: // no more substitutions here, fail early |
---|
| 1674 | // return false; |
---|
| 1675 | // case TypeDecl::Dtype: // dtype can be consistently replaced with void [only pointers, which become void*] |
---|
| 1676 | // out.push_back( new TypeExpr( new VoidType( Type::Qualifiers() ) ) ); |
---|
| 1677 | // break; |
---|
| 1678 | // case TypeDecl::Ftype: // pointer-to-ftype can be consistently replaced with void (*)(void) [similar to dtype] |
---|
| 1679 | // out.push_back( new TypeExpr( new FunctionType( Type::Qualifiers(), false ) ) ); |
---|
| 1680 | // break; |
---|
| 1681 | // } |
---|
| 1682 | // } |
---|
| 1683 | |
---|
| 1684 | return allConcrete; |
---|
| 1685 | } |
---|
| 1686 | |
---|
| 1687 | /// Substitutes types of members of in according to baseParams => typeSubs, appending the result to out |
---|
| 1688 | void substituteMembers( const std::list< Declaration* >& in, const std::list< TypeDecl* >& baseParams, const std::list< TypeExpr* >& typeSubs, |
---|
| 1689 | std::list< Declaration* >& out ) { |
---|
| 1690 | // substitute types into new members |
---|
| 1691 | TypeSubstitution subs( baseParams.begin(), baseParams.end(), typeSubs.begin() ); |
---|
| 1692 | for ( std::list< Declaration* >::const_iterator member = in.begin(); member != in.end(); ++member ) { |
---|
| 1693 | Declaration *newMember = (*member)->clone(); |
---|
| 1694 | subs.apply(newMember); |
---|
| 1695 | out.push_back( newMember ); |
---|
| 1696 | } |
---|
| 1697 | } |
---|
| 1698 | |
---|
| 1699 | Type* GenericInstantiator::mutate( StructInstType *inst ) { |
---|
| 1700 | // mutate subtypes |
---|
| 1701 | Type *mutated = Mutator::mutate( inst ); |
---|
| 1702 | inst = dynamic_cast< StructInstType* >( mutated ); |
---|
| 1703 | if ( ! inst ) return mutated; |
---|
| 1704 | |
---|
| 1705 | // exit early if no need for further mutation |
---|
| 1706 | if ( inst->get_parameters().empty() ) return inst; |
---|
| 1707 | assert( inst->get_baseParameters() && "Base struct has parameters" ); |
---|
| 1708 | |
---|
| 1709 | // check if type can be concretely instantiated; put substitutions into typeSubs |
---|
| 1710 | std::list< TypeExpr* > typeSubs; |
---|
| 1711 | if ( ! makeSubstitutions( *inst->get_baseParameters(), inst->get_parameters(), typeSubs ) ) { |
---|
| 1712 | deleteAll( typeSubs ); |
---|
| 1713 | return inst; |
---|
| 1714 | } |
---|
| 1715 | |
---|
| 1716 | // make concrete instantiation of generic type |
---|
| 1717 | StructDecl *concDecl = lookup( inst, typeSubs ); |
---|
| 1718 | if ( ! concDecl ) { |
---|
| 1719 | // set concDecl to new type, insert type declaration into statements to add |
---|
| 1720 | concDecl = new StructDecl( typeNamer.newName( inst->get_name() ) ); |
---|
| 1721 | substituteMembers( inst->get_baseStruct()->get_members(), *inst->get_baseParameters(), typeSubs, concDecl->get_members() ); |
---|
| 1722 | DeclMutator::addDeclaration( concDecl ); |
---|
| 1723 | insert( inst, typeSubs, concDecl ); |
---|
| 1724 | } |
---|
| 1725 | StructInstType *newInst = new StructInstType( inst->get_qualifiers(), concDecl->get_name() ); |
---|
| 1726 | newInst->set_baseStruct( concDecl ); |
---|
| 1727 | |
---|
| 1728 | deleteAll( typeSubs ); |
---|
| 1729 | delete inst; |
---|
| 1730 | return newInst; |
---|
| 1731 | } |
---|
| 1732 | |
---|
| 1733 | Type* GenericInstantiator::mutate( UnionInstType *inst ) { |
---|
| 1734 | // mutate subtypes |
---|
| 1735 | Type *mutated = Mutator::mutate( inst ); |
---|
| 1736 | inst = dynamic_cast< UnionInstType* >( mutated ); |
---|
| 1737 | if ( ! inst ) return mutated; |
---|
| 1738 | |
---|
| 1739 | // exit early if no need for further mutation |
---|
| 1740 | if ( inst->get_parameters().empty() ) return inst; |
---|
| 1741 | assert( inst->get_baseParameters() && "Base union has parameters" ); |
---|
| 1742 | |
---|
| 1743 | // check if type can be concretely instantiated; put substitutions into typeSubs |
---|
| 1744 | std::list< TypeExpr* > typeSubs; |
---|
| 1745 | if ( ! makeSubstitutions( *inst->get_baseParameters(), inst->get_parameters(), typeSubs ) ) { |
---|
| 1746 | deleteAll( typeSubs ); |
---|
| 1747 | return inst; |
---|
| 1748 | } |
---|
| 1749 | |
---|
| 1750 | // make concrete instantiation of generic type |
---|
| 1751 | UnionDecl *concDecl = lookup( inst, typeSubs ); |
---|
| 1752 | if ( ! concDecl ) { |
---|
| 1753 | // set concDecl to new type, insert type declaration into statements to add |
---|
| 1754 | concDecl = new UnionDecl( typeNamer.newName( inst->get_name() ) ); |
---|
| 1755 | substituteMembers( inst->get_baseUnion()->get_members(), *inst->get_baseParameters(), typeSubs, concDecl->get_members() ); |
---|
| 1756 | DeclMutator::addDeclaration( concDecl ); |
---|
| 1757 | insert( inst, typeSubs, concDecl ); |
---|
| 1758 | } |
---|
| 1759 | UnionInstType *newInst = new UnionInstType( inst->get_qualifiers(), concDecl->get_name() ); |
---|
| 1760 | newInst->set_baseUnion( concDecl ); |
---|
| 1761 | |
---|
| 1762 | deleteAll( typeSubs ); |
---|
| 1763 | delete inst; |
---|
| 1764 | return newInst; |
---|
| 1765 | } |
---|
| 1766 | |
---|
| 1767 | // /// Gets the base struct or union declaration for a member expression; NULL if not applicable |
---|
| 1768 | // AggregateDecl* getMemberBaseDecl( MemberExpr *memberExpr ) { |
---|
| 1769 | // // get variable for member aggregate |
---|
| 1770 | // VariableExpr *varExpr = dynamic_cast< VariableExpr* >( memberExpr->get_aggregate() ); |
---|
| 1771 | // if ( ! varExpr ) return NULL; |
---|
| 1772 | // |
---|
| 1773 | // // get object for variable |
---|
| 1774 | // ObjectDecl *objectDecl = dynamic_cast< ObjectDecl* >( varExpr->get_var() ); |
---|
| 1775 | // if ( ! objectDecl ) return NULL; |
---|
| 1776 | // |
---|
| 1777 | // // get base declaration from object type |
---|
| 1778 | // Type *objectType = objectDecl->get_type(); |
---|
| 1779 | // StructInstType *structType = dynamic_cast< StructInstType* >( objectType ); |
---|
| 1780 | // if ( structType ) return structType->get_baseStruct(); |
---|
| 1781 | // UnionInstType *unionType = dynamic_cast< UnionInstType* >( objectType ); |
---|
| 1782 | // if ( unionType ) return unionType->get_baseUnion(); |
---|
| 1783 | // |
---|
| 1784 | // return NULL; |
---|
| 1785 | // } |
---|
| 1786 | // |
---|
| 1787 | // /// Finds the declaration with the given name, returning decls.end() if none such |
---|
| 1788 | // std::list< Declaration* >::const_iterator findDeclNamed( const std::list< Declaration* > &decls, const std::string &name ) { |
---|
| 1789 | // for( std::list< Declaration* >::const_iterator decl = decls.begin(); decl != decls.end(); ++decl ) { |
---|
| 1790 | // if ( (*decl)->get_name() == name ) return decl; |
---|
| 1791 | // } |
---|
| 1792 | // return decls.end(); |
---|
| 1793 | // } |
---|
| 1794 | // |
---|
| 1795 | // Expression* Instantiate::mutate( MemberExpr *memberExpr ) { |
---|
| 1796 | // // mutate, exiting early if no longer MemberExpr |
---|
| 1797 | // Expression *expr = Mutator::mutate( memberExpr ); |
---|
| 1798 | // memberExpr = dynamic_cast< MemberExpr* >( expr ); |
---|
| 1799 | // if ( ! memberExpr ) return expr; |
---|
| 1800 | // |
---|
| 1801 | // // get declaration of member and base declaration of member, exiting early if not found |
---|
| 1802 | // AggregateDecl *memberBase = getMemberBaseDecl( memberExpr ); |
---|
| 1803 | // if ( ! memberBase ) return memberExpr; |
---|
| 1804 | // DeclarationWithType *memberDecl = memberExpr->get_member(); |
---|
| 1805 | // std::list< Declaration* >::const_iterator baseIt = findDeclNamed( memberBase->get_members(), memberDecl->get_name() ); |
---|
| 1806 | // if ( baseIt == memberBase->get_members().end() ) return memberExpr; |
---|
| 1807 | // DeclarationWithType *baseDecl = dynamic_cast< DeclarationWithType* >( *baseIt ); |
---|
| 1808 | // if ( ! baseDecl ) return memberExpr; |
---|
| 1809 | // |
---|
| 1810 | // // check if stated type of the member is not the type of the member's declaration; if so, need a cast |
---|
| 1811 | // // this *SHOULD* be safe, I don't think anything but the void-replacements I put in for dtypes would make it past the typechecker |
---|
| 1812 | // SymTab::Indexer dummy; |
---|
| 1813 | // if ( ResolvExpr::typesCompatible( memberDecl->get_type(), baseDecl->get_type(), dummy ) ) return memberExpr; |
---|
| 1814 | // else return new CastExpr( memberExpr, memberDecl->get_type() ); |
---|
| 1815 | // } |
---|
| 1816 | |
---|
| 1817 | void GenericInstantiator::doBeginScope() { |
---|
| 1818 | DeclMutator::doBeginScope(); |
---|
| 1819 | instantiations.beginScope(); |
---|
| 1820 | } |
---|
| 1821 | |
---|
| 1822 | void GenericInstantiator::doEndScope() { |
---|
| 1823 | DeclMutator::doEndScope(); |
---|
| 1824 | instantiations.endScope(); |
---|
| 1825 | } |
---|
| 1826 | |
---|
[4b8f918] | 1827 | ////////////////////////////////////////// PolyGenericCalculator //////////////////////////////////////////////////// |
---|
[51b7345] | 1828 | |
---|
[aa19ccf] | 1829 | void PolyGenericCalculator::beginTypeScope( Type *ty ) { |
---|
| 1830 | scopeTyVars.beginScope(); |
---|
| 1831 | makeTyVarMap( ty, scopeTyVars ); |
---|
| 1832 | } |
---|
| 1833 | |
---|
| 1834 | void PolyGenericCalculator::endTypeScope() { |
---|
| 1835 | scopeTyVars.endScope(); |
---|
| 1836 | } |
---|
[51b7345] | 1837 | |
---|
[01aeade] | 1838 | template< typename DeclClass > |
---|
[8a34677] | 1839 | DeclClass * PolyGenericCalculator::handleDecl( DeclClass *decl, Type *type ) { |
---|
[aa19ccf] | 1840 | beginTypeScope( type ); |
---|
| 1841 | knownLayouts.beginScope(); |
---|
| 1842 | knownOffsets.beginScope(); |
---|
[ae63a18] | 1843 | |
---|
[01aeade] | 1844 | DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) ); |
---|
[6c3744e] | 1845 | |
---|
[aa19ccf] | 1846 | knownOffsets.endScope(); |
---|
| 1847 | knownLayouts.endScope(); |
---|
| 1848 | endTypeScope(); |
---|
[01aeade] | 1849 | return ret; |
---|
| 1850 | } |
---|
[6c3744e] | 1851 | |
---|
[8a34677] | 1852 | ObjectDecl * PolyGenericCalculator::mutate( ObjectDecl *objectDecl ) { |
---|
[01aeade] | 1853 | return handleDecl( objectDecl, objectDecl->get_type() ); |
---|
| 1854 | } |
---|
[6c3744e] | 1855 | |
---|
[8a34677] | 1856 | DeclarationWithType * PolyGenericCalculator::mutate( FunctionDecl *functionDecl ) { |
---|
[01aeade] | 1857 | return handleDecl( functionDecl, functionDecl->get_functionType() ); |
---|
| 1858 | } |
---|
[6c3744e] | 1859 | |
---|
[8a34677] | 1860 | TypedefDecl * PolyGenericCalculator::mutate( TypedefDecl *typedefDecl ) { |
---|
[01aeade] | 1861 | return handleDecl( typedefDecl, typedefDecl->get_base() ); |
---|
| 1862 | } |
---|
[6c3744e] | 1863 | |
---|
[8a34677] | 1864 | TypeDecl * PolyGenericCalculator::mutate( TypeDecl *typeDecl ) { |
---|
[01aeade] | 1865 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
| 1866 | return Mutator::mutate( typeDecl ); |
---|
| 1867 | } |
---|
[51b7345] | 1868 | |
---|
[8a34677] | 1869 | Type * PolyGenericCalculator::mutate( PointerType *pointerType ) { |
---|
[aa19ccf] | 1870 | beginTypeScope( pointerType ); |
---|
[ae63a18] | 1871 | |
---|
[01aeade] | 1872 | Type *ret = Mutator::mutate( pointerType ); |
---|
[ae63a18] | 1873 | |
---|
[aa19ccf] | 1874 | endTypeScope(); |
---|
[01aeade] | 1875 | return ret; |
---|
| 1876 | } |
---|
[6c3744e] | 1877 | |
---|
[8a34677] | 1878 | Type * PolyGenericCalculator::mutate( FunctionType *funcType ) { |
---|
[aa19ccf] | 1879 | beginTypeScope( funcType ); |
---|
[ae63a18] | 1880 | |
---|
[8a34677] | 1881 | // make sure that any type information passed into the function is accounted for |
---|
| 1882 | for ( std::list< DeclarationWithType* >::const_iterator fnParm = funcType->get_parameters().begin(); fnParm != funcType->get_parameters().end(); ++fnParm ) { |
---|
| 1883 | // condition here duplicates that in Pass2::mutate( FunctionType* ) |
---|
[4b8f918] | 1884 | Type *polyType = isPolyType( (*fnParm)->get_type(), scopeTyVars ); |
---|
| 1885 | if ( polyType && ! dynamic_cast< TypeInstType* >( polyType ) ) { |
---|
| 1886 | knownLayouts.insert( mangleType( polyType ) ); |
---|
[8a34677] | 1887 | } |
---|
| 1888 | } |
---|
[70a06f6] | 1889 | |
---|
[8a34677] | 1890 | Type *ret = Mutator::mutate( funcType ); |
---|
[ae63a18] | 1891 | |
---|
[aa19ccf] | 1892 | endTypeScope(); |
---|
[01aeade] | 1893 | return ret; |
---|
[6c3744e] | 1894 | } |
---|
[51b7345] | 1895 | |
---|
[8a34677] | 1896 | Statement *PolyGenericCalculator::mutate( DeclStmt *declStmt ) { |
---|
[01aeade] | 1897 | if ( ObjectDecl *objectDecl = dynamic_cast< ObjectDecl *>( declStmt->get_decl() ) ) { |
---|
[8a34677] | 1898 | if ( findGeneric( objectDecl->get_type() ) ) { |
---|
[e01559c] | 1899 | // change initialization of a polymorphic value object |
---|
| 1900 | // to allocate storage with alloca |
---|
[ffad73a] | 1901 | Type *declType = objectDecl->get_type(); |
---|
[01aeade] | 1902 | UntypedExpr *alloc = new UntypedExpr( new NameExpr( "__builtin_alloca" ) ); |
---|
[adc6781] | 1903 | alloc->get_args().push_back( new NameExpr( sizeofName( mangleType( declType ) ) ) ); |
---|
[e01559c] | 1904 | |
---|
| 1905 | delete objectDecl->get_init(); |
---|
| 1906 | |
---|
| 1907 | std::list<Expression*> designators; |
---|
[974906e2] | 1908 | objectDecl->set_init( new SingleInit( alloc, designators, false ) ); // not constructed |
---|
[01aeade] | 1909 | } |
---|
| 1910 | } |
---|
| 1911 | return Mutator::mutate( declStmt ); |
---|
| 1912 | } |
---|
[05d47278] | 1913 | |
---|
[2a4b088] | 1914 | /// Finds the member in the base list that matches the given declaration; returns its index, or -1 if not present |
---|
| 1915 | long findMember( DeclarationWithType *memberDecl, std::list< Declaration* > &baseDecls ) { |
---|
| 1916 | long i = 0; |
---|
| 1917 | for(std::list< Declaration* >::const_iterator decl = baseDecls.begin(); decl != baseDecls.end(); ++decl, ++i ) { |
---|
| 1918 | if ( memberDecl->get_name() != (*decl)->get_name() ) continue; |
---|
| 1919 | |
---|
| 1920 | if ( DeclarationWithType *declWithType = dynamic_cast< DeclarationWithType* >( *decl ) ) { |
---|
[bed4d37c] | 1921 | if ( memberDecl->get_mangleName().empty() || declWithType->get_mangleName().empty() |
---|
| 1922 | || memberDecl->get_mangleName() == declWithType->get_mangleName() ) return i; |
---|
[2a4b088] | 1923 | else continue; |
---|
| 1924 | } else return i; |
---|
| 1925 | } |
---|
| 1926 | return -1; |
---|
| 1927 | } |
---|
| 1928 | |
---|
| 1929 | /// Returns an index expression into the offset array for a type |
---|
| 1930 | Expression *makeOffsetIndex( Type *objectType, long i ) { |
---|
| 1931 | std::stringstream offset_namer; |
---|
| 1932 | offset_namer << i; |
---|
| 1933 | ConstantExpr *fieldIndex = new ConstantExpr( Constant( new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), offset_namer.str() ) ); |
---|
| 1934 | UntypedExpr *fieldOffset = new UntypedExpr( new NameExpr( "?[?]" ) ); |
---|
[adc6781] | 1935 | fieldOffset->get_args().push_back( new NameExpr( offsetofName( mangleType( objectType ) ) ) ); |
---|
[2a4b088] | 1936 | fieldOffset->get_args().push_back( fieldIndex ); |
---|
| 1937 | return fieldOffset; |
---|
| 1938 | } |
---|
| 1939 | |
---|
| 1940 | /// Returns an expression dereferenced n times |
---|
| 1941 | Expression *makeDerefdVar( Expression *derefdVar, long n ) { |
---|
| 1942 | for ( int i = 1; i < n; ++i ) { |
---|
| 1943 | UntypedExpr *derefExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
| 1944 | derefExpr->get_args().push_back( derefdVar ); |
---|
| 1945 | derefdVar = derefExpr; |
---|
| 1946 | } |
---|
| 1947 | return derefdVar; |
---|
| 1948 | } |
---|
[d63eeb0] | 1949 | |
---|
[8a34677] | 1950 | Expression *PolyGenericCalculator::mutate( MemberExpr *memberExpr ) { |
---|
[05d47278] | 1951 | // mutate, exiting early if no longer MemberExpr |
---|
| 1952 | Expression *expr = Mutator::mutate( memberExpr ); |
---|
| 1953 | memberExpr = dynamic_cast< MemberExpr* >( expr ); |
---|
| 1954 | if ( ! memberExpr ) return expr; |
---|
| 1955 | |
---|
| 1956 | // get declaration for base struct, exiting early if not found |
---|
[8488c715] | 1957 | int varDepth; |
---|
| 1958 | VariableExpr *varExpr = getBaseVar( memberExpr->get_aggregate(), &varDepth ); |
---|
[05d47278] | 1959 | if ( ! varExpr ) return memberExpr; |
---|
| 1960 | ObjectDecl *objectDecl = dynamic_cast< ObjectDecl* >( varExpr->get_var() ); |
---|
| 1961 | if ( ! objectDecl ) return memberExpr; |
---|
| 1962 | |
---|
| 1963 | // only mutate member expressions for polymorphic types |
---|
[8488c715] | 1964 | int tyDepth; |
---|
| 1965 | Type *objectType = hasPolyBase( objectDecl->get_type(), scopeTyVars, &tyDepth ); |
---|
[05d47278] | 1966 | if ( ! objectType ) return memberExpr; |
---|
[8a34677] | 1967 | findGeneric( objectType ); // ensure layout for this type is available |
---|
[05d47278] | 1968 | |
---|
[4318107] | 1969 | Expression *newMemberExpr = 0; |
---|
[05d47278] | 1970 | if ( StructInstType *structType = dynamic_cast< StructInstType* >( objectType ) ) { |
---|
[2a4b088] | 1971 | // look up offset index |
---|
| 1972 | long i = findMember( memberExpr->get_member(), structType->get_baseStruct()->get_members() ); |
---|
| 1973 | if ( i == -1 ) return memberExpr; |
---|
[05d47278] | 1974 | |
---|
[2a4b088] | 1975 | // replace member expression with pointer to base plus offset |
---|
| 1976 | UntypedExpr *fieldLoc = new UntypedExpr( new NameExpr( "?+?" ) ); |
---|
| 1977 | fieldLoc->get_args().push_back( makeDerefdVar( varExpr->clone(), varDepth ) ); |
---|
| 1978 | fieldLoc->get_args().push_back( makeOffsetIndex( objectType, i ) ); |
---|
[4318107] | 1979 | newMemberExpr = fieldLoc; |
---|
[98735ef] | 1980 | } else if ( dynamic_cast< UnionInstType* >( objectType ) ) { |
---|
[2a4b088] | 1981 | // union members are all at offset zero, so build appropriately-dereferenced variable |
---|
[4318107] | 1982 | newMemberExpr = makeDerefdVar( varExpr->clone(), varDepth ); |
---|
[2a4b088] | 1983 | } else return memberExpr; |
---|
[4318107] | 1984 | assert( newMemberExpr ); |
---|
| 1985 | |
---|
[4067aa8] | 1986 | Type *memberType = memberExpr->get_member()->get_type(); |
---|
| 1987 | if ( ! isPolyType( memberType, scopeTyVars ) ) { |
---|
| 1988 | // 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 |
---|
| 1989 | CastExpr *ptrCastExpr = new CastExpr( newMemberExpr, new PointerType( Type::Qualifiers(), memberType->clone() ) ); |
---|
[4318107] | 1990 | UntypedExpr *derefExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
---|
| 1991 | derefExpr->get_args().push_back( ptrCastExpr ); |
---|
| 1992 | newMemberExpr = derefExpr; |
---|
| 1993 | } |
---|
| 1994 | |
---|
| 1995 | delete memberExpr; |
---|
| 1996 | return newMemberExpr; |
---|
[2a4b088] | 1997 | } |
---|
[05d47278] | 1998 | |
---|
[8a34677] | 1999 | ObjectDecl *PolyGenericCalculator::makeVar( const std::string &name, Type *type, Initializer *init ) { |
---|
| 2000 | ObjectDecl *newObj = new ObjectDecl( name, DeclarationNode::NoStorageClass, LinkageSpec::C, 0, type, init ); |
---|
| 2001 | stmtsToAdd.push_back( new DeclStmt( noLabels, newObj ) ); |
---|
| 2002 | return newObj; |
---|
| 2003 | } |
---|
| 2004 | |
---|
| 2005 | void PolyGenericCalculator::addOtypeParamsToLayoutCall( UntypedExpr *layoutCall, const std::list< Type* > &otypeParams ) { |
---|
| 2006 | for ( std::list< Type* >::const_iterator param = otypeParams.begin(); param != otypeParams.end(); ++param ) { |
---|
| 2007 | if ( findGeneric( *param ) ) { |
---|
| 2008 | // push size/align vars for a generic parameter back |
---|
[adc6781] | 2009 | std::string paramName = mangleType( *param ); |
---|
| 2010 | layoutCall->get_args().push_back( new NameExpr( sizeofName( paramName ) ) ); |
---|
| 2011 | layoutCall->get_args().push_back( new NameExpr( alignofName( paramName ) ) ); |
---|
[8a34677] | 2012 | } else { |
---|
| 2013 | layoutCall->get_args().push_back( new SizeofExpr( (*param)->clone() ) ); |
---|
| 2014 | layoutCall->get_args().push_back( new AlignofExpr( (*param)->clone() ) ); |
---|
| 2015 | } |
---|
| 2016 | } |
---|
| 2017 | } |
---|
| 2018 | |
---|
| 2019 | /// returns true if any of the otype parameters have a dynamic layout and puts all otype parameters in the output list |
---|
| 2020 | bool findGenericParams( std::list< TypeDecl* > &baseParams, std::list< Expression* > &typeParams, std::list< Type* > &out ) { |
---|
| 2021 | bool hasDynamicLayout = false; |
---|
| 2022 | |
---|
| 2023 | std::list< TypeDecl* >::const_iterator baseParam = baseParams.begin(); |
---|
| 2024 | std::list< Expression* >::const_iterator typeParam = typeParams.begin(); |
---|
| 2025 | for ( ; baseParam != baseParams.end() && typeParam != typeParams.end(); ++baseParam, ++typeParam ) { |
---|
| 2026 | // skip non-otype parameters |
---|
| 2027 | if ( (*baseParam)->get_kind() != TypeDecl::Any ) continue; |
---|
| 2028 | TypeExpr *typeExpr = dynamic_cast< TypeExpr* >( *typeParam ); |
---|
| 2029 | assert( typeExpr && "all otype parameters should be type expressions" ); |
---|
| 2030 | |
---|
| 2031 | Type *type = typeExpr->get_type(); |
---|
| 2032 | out.push_back( type ); |
---|
| 2033 | if ( isPolyType( type ) ) hasDynamicLayout = true; |
---|
| 2034 | } |
---|
| 2035 | assert( baseParam == baseParams.end() && typeParam == typeParams.end() ); |
---|
| 2036 | |
---|
| 2037 | return hasDynamicLayout; |
---|
| 2038 | } |
---|
| 2039 | |
---|
| 2040 | bool PolyGenericCalculator::findGeneric( Type *ty ) { |
---|
| 2041 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType* >( ty ) ) { |
---|
| 2042 | // duplicate logic from isPolyType() |
---|
| 2043 | if ( env ) { |
---|
| 2044 | if ( Type *newType = env->lookup( typeInst->get_name() ) ) { |
---|
| 2045 | return findGeneric( newType ); |
---|
| 2046 | } // if |
---|
| 2047 | } // if |
---|
| 2048 | if ( scopeTyVars.find( typeInst->get_name() ) != scopeTyVars.end() ) { |
---|
| 2049 | // NOTE assumes here that getting put in the scopeTyVars included having the layout variables set |
---|
| 2050 | return true; |
---|
| 2051 | } |
---|
| 2052 | return false; |
---|
| 2053 | } else if ( StructInstType *structTy = dynamic_cast< StructInstType* >( ty ) ) { |
---|
| 2054 | // check if this type already has a layout generated for it |
---|
[adc6781] | 2055 | std::string typeName = mangleType( ty ); |
---|
| 2056 | if ( knownLayouts.find( typeName ) != knownLayouts.end() ) return true; |
---|
[8a34677] | 2057 | |
---|
| 2058 | // check if any of the type parameters have dynamic layout; if none do, this type is (or will be) monomorphized |
---|
| 2059 | std::list< Type* > otypeParams; |
---|
| 2060 | if ( ! findGenericParams( *structTy->get_baseParameters(), structTy->get_parameters(), otypeParams ) ) return false; |
---|
| 2061 | |
---|
| 2062 | // insert local variables for layout and generate call to layout function |
---|
[adc6781] | 2063 | knownLayouts.insert( typeName ); // done early so as not to interfere with the later addition of parameters to the layout call |
---|
[8a34677] | 2064 | Type *layoutType = new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ); |
---|
| 2065 | |
---|
| 2066 | int n_members = structTy->get_baseStruct()->get_members().size(); |
---|
| 2067 | if ( n_members == 0 ) { |
---|
| 2068 | // all empty structs have the same layout - size 1, align 1 |
---|
[adc6781] | 2069 | makeVar( sizeofName( typeName ), layoutType, new SingleInit( new ConstantExpr( Constant::from( (unsigned long)1 ) ) ) ); |
---|
| 2070 | makeVar( alignofName( typeName ), layoutType->clone(), new SingleInit( new ConstantExpr( Constant::from( (unsigned long)1 ) ) ) ); |
---|
[8a34677] | 2071 | // NOTE zero-length arrays are forbidden in C, so empty structs have no offsetof array |
---|
| 2072 | } else { |
---|
[adc6781] | 2073 | ObjectDecl *sizeVar = makeVar( sizeofName( typeName ), layoutType ); |
---|
| 2074 | ObjectDecl *alignVar = makeVar( alignofName( typeName ), layoutType->clone() ); |
---|
| 2075 | ObjectDecl *offsetVar = makeVar( offsetofName( typeName ), new ArrayType( Type::Qualifiers(), layoutType->clone(), new ConstantExpr( Constant::from( n_members ) ), false, false ) ); |
---|
[8a34677] | 2076 | |
---|
| 2077 | // generate call to layout function |
---|
[adc6781] | 2078 | UntypedExpr *layoutCall = new UntypedExpr( new NameExpr( layoutofName( structTy->get_baseStruct() ) ) ); |
---|
[8a34677] | 2079 | layoutCall->get_args().push_back( new AddressExpr( new VariableExpr( sizeVar ) ) ); |
---|
| 2080 | layoutCall->get_args().push_back( new AddressExpr( new VariableExpr( alignVar ) ) ); |
---|
| 2081 | layoutCall->get_args().push_back( new VariableExpr( offsetVar ) ); |
---|
| 2082 | addOtypeParamsToLayoutCall( layoutCall, otypeParams ); |
---|
| 2083 | |
---|
| 2084 | stmtsToAdd.push_back( new ExprStmt( noLabels, layoutCall ) ); |
---|
| 2085 | } |
---|
| 2086 | |
---|
| 2087 | return true; |
---|
| 2088 | } else if ( UnionInstType *unionTy = dynamic_cast< UnionInstType* >( ty ) ) { |
---|
| 2089 | // check if this type already has a layout generated for it |
---|
[adc6781] | 2090 | std::string typeName = mangleType( ty ); |
---|
| 2091 | if ( knownLayouts.find( typeName ) != knownLayouts.end() ) return true; |
---|
[8a34677] | 2092 | |
---|
| 2093 | // check if any of the type parameters have dynamic layout; if none do, this type is (or will be) monomorphized |
---|
| 2094 | std::list< Type* > otypeParams; |
---|
| 2095 | if ( ! findGenericParams( *unionTy->get_baseParameters(), unionTy->get_parameters(), otypeParams ) ) return false; |
---|
| 2096 | |
---|
| 2097 | // insert local variables for layout and generate call to layout function |
---|
[adc6781] | 2098 | knownLayouts.insert( typeName ); // done early so as not to interfere with the later addition of parameters to the layout call |
---|
[8a34677] | 2099 | Type *layoutType = new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ); |
---|
| 2100 | |
---|
[adc6781] | 2101 | ObjectDecl *sizeVar = makeVar( sizeofName( typeName ), layoutType ); |
---|
| 2102 | ObjectDecl *alignVar = makeVar( alignofName( typeName ), layoutType->clone() ); |
---|
[8a34677] | 2103 | |
---|
| 2104 | // generate call to layout function |
---|
[adc6781] | 2105 | UntypedExpr *layoutCall = new UntypedExpr( new NameExpr( layoutofName( unionTy->get_baseUnion() ) ) ); |
---|
[8a34677] | 2106 | layoutCall->get_args().push_back( new AddressExpr( new VariableExpr( sizeVar ) ) ); |
---|
| 2107 | layoutCall->get_args().push_back( new AddressExpr( new VariableExpr( alignVar ) ) ); |
---|
| 2108 | addOtypeParamsToLayoutCall( layoutCall, otypeParams ); |
---|
| 2109 | |
---|
| 2110 | stmtsToAdd.push_back( new ExprStmt( noLabels, layoutCall ) ); |
---|
| 2111 | |
---|
| 2112 | return true; |
---|
| 2113 | } |
---|
| 2114 | |
---|
| 2115 | return false; |
---|
| 2116 | } |
---|
| 2117 | |
---|
| 2118 | Expression *PolyGenericCalculator::mutate( SizeofExpr *sizeofExpr ) { |
---|
| 2119 | Type *ty = sizeofExpr->get_type(); |
---|
| 2120 | if ( findGeneric( ty ) ) { |
---|
[adc6781] | 2121 | Expression *ret = new NameExpr( sizeofName( mangleType( ty ) ) ); |
---|
[8a34677] | 2122 | delete sizeofExpr; |
---|
| 2123 | return ret; |
---|
| 2124 | } |
---|
| 2125 | return sizeofExpr; |
---|
| 2126 | } |
---|
| 2127 | |
---|
| 2128 | Expression *PolyGenericCalculator::mutate( AlignofExpr *alignofExpr ) { |
---|
| 2129 | Type *ty = alignofExpr->get_type(); |
---|
| 2130 | if ( findGeneric( ty ) ) { |
---|
[adc6781] | 2131 | Expression *ret = new NameExpr( alignofName( mangleType( ty ) ) ); |
---|
[8a34677] | 2132 | delete alignofExpr; |
---|
| 2133 | return ret; |
---|
| 2134 | } |
---|
| 2135 | return alignofExpr; |
---|
| 2136 | } |
---|
| 2137 | |
---|
| 2138 | Expression *PolyGenericCalculator::mutate( OffsetofExpr *offsetofExpr ) { |
---|
[2a4b088] | 2139 | // mutate, exiting early if no longer OffsetofExpr |
---|
| 2140 | Expression *expr = Mutator::mutate( offsetofExpr ); |
---|
| 2141 | offsetofExpr = dynamic_cast< OffsetofExpr* >( expr ); |
---|
| 2142 | if ( ! offsetofExpr ) return expr; |
---|
| 2143 | |
---|
| 2144 | // only mutate expressions for polymorphic structs/unions |
---|
[8a34677] | 2145 | Type *ty = offsetofExpr->get_type(); |
---|
| 2146 | if ( ! findGeneric( ty ) ) return offsetofExpr; |
---|
[2a4b088] | 2147 | |
---|
| 2148 | if ( StructInstType *structType = dynamic_cast< StructInstType* >( ty ) ) { |
---|
| 2149 | // replace offsetof expression by index into offset array |
---|
| 2150 | long i = findMember( offsetofExpr->get_member(), structType->get_baseStruct()->get_members() ); |
---|
| 2151 | if ( i == -1 ) return offsetofExpr; |
---|
| 2152 | |
---|
| 2153 | Expression *offsetInd = makeOffsetIndex( ty, i ); |
---|
| 2154 | delete offsetofExpr; |
---|
| 2155 | return offsetInd; |
---|
[5c52b06] | 2156 | } else if ( dynamic_cast< UnionInstType* >( ty ) ) { |
---|
[2a4b088] | 2157 | // all union members are at offset zero |
---|
| 2158 | delete offsetofExpr; |
---|
| 2159 | return new ConstantExpr( Constant( new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ), std::string("0") ) ); |
---|
| 2160 | } else return offsetofExpr; |
---|
[05d47278] | 2161 | } |
---|
| 2162 | |
---|
[8a34677] | 2163 | Expression *PolyGenericCalculator::mutate( OffsetPackExpr *offsetPackExpr ) { |
---|
| 2164 | StructInstType *ty = offsetPackExpr->get_type(); |
---|
| 2165 | |
---|
| 2166 | Expression *ret = 0; |
---|
| 2167 | if ( findGeneric( ty ) ) { |
---|
| 2168 | // pull offset back from generated type information |
---|
[adc6781] | 2169 | ret = new NameExpr( offsetofName( mangleType( ty ) ) ); |
---|
[8a34677] | 2170 | } else { |
---|
[adc6781] | 2171 | std::string offsetName = offsetofName( mangleType( ty ) ); |
---|
[8a34677] | 2172 | if ( knownOffsets.find( offsetName ) != knownOffsets.end() ) { |
---|
| 2173 | // use the already-generated offsets for this type |
---|
| 2174 | ret = new NameExpr( offsetName ); |
---|
| 2175 | } else { |
---|
| 2176 | knownOffsets.insert( offsetName ); |
---|
| 2177 | |
---|
| 2178 | std::list< Declaration* > &baseMembers = ty->get_baseStruct()->get_members(); |
---|
| 2179 | Type *offsetType = new BasicType( Type::Qualifiers(), BasicType::LongUnsignedInt ); |
---|
| 2180 | |
---|
| 2181 | // build initializer list for offset array |
---|
| 2182 | std::list< Initializer* > inits; |
---|
| 2183 | for ( std::list< Declaration* >::const_iterator member = baseMembers.begin(); member != baseMembers.end(); ++member ) { |
---|
| 2184 | DeclarationWithType *memberDecl; |
---|
| 2185 | if ( DeclarationWithType *origMember = dynamic_cast< DeclarationWithType* >( *member ) ) { |
---|
| 2186 | memberDecl = origMember->clone(); |
---|
| 2187 | } else { |
---|
| 2188 | memberDecl = new ObjectDecl( (*member)->get_name(), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, offsetType->clone(), 0 ); |
---|
| 2189 | } |
---|
| 2190 | inits.push_back( new SingleInit( new OffsetofExpr( ty->clone(), memberDecl ) ) ); |
---|
| 2191 | } |
---|
| 2192 | |
---|
| 2193 | // build the offset array and replace the pack with a reference to it |
---|
| 2194 | ObjectDecl *offsetArray = makeVar( offsetName, new ArrayType( Type::Qualifiers(), offsetType, new ConstantExpr( Constant::from( baseMembers.size() ) ), false, false ), |
---|
| 2195 | new ListInit( inits ) ); |
---|
| 2196 | ret = new VariableExpr( offsetArray ); |
---|
| 2197 | } |
---|
| 2198 | } |
---|
| 2199 | |
---|
| 2200 | delete offsetPackExpr; |
---|
| 2201 | return ret; |
---|
| 2202 | } |
---|
| 2203 | |
---|
| 2204 | void PolyGenericCalculator::doBeginScope() { |
---|
| 2205 | knownLayouts.beginScope(); |
---|
| 2206 | knownOffsets.beginScope(); |
---|
| 2207 | } |
---|
| 2208 | |
---|
| 2209 | void PolyGenericCalculator::doEndScope() { |
---|
| 2210 | knownLayouts.endScope(); |
---|
[adc6781] | 2211 | knownOffsets.endScope(); |
---|
[8a34677] | 2212 | } |
---|
| 2213 | |
---|
[05d47278] | 2214 | ////////////////////////////////////////// Pass3 //////////////////////////////////////////////////// |
---|
| 2215 | |
---|
| 2216 | template< typename DeclClass > |
---|
| 2217 | DeclClass * Pass3::handleDecl( DeclClass *decl, Type *type ) { |
---|
[6f49cdf] | 2218 | scopeTyVars.beginScope(); |
---|
[05d47278] | 2219 | makeTyVarMap( type, scopeTyVars ); |
---|
| 2220 | |
---|
| 2221 | DeclClass *ret = static_cast< DeclClass *>( Mutator::mutate( decl ) ); |
---|
| 2222 | ScrubTyVars::scrub( decl, scopeTyVars ); |
---|
| 2223 | |
---|
[6f49cdf] | 2224 | scopeTyVars.endScope(); |
---|
[05d47278] | 2225 | return ret; |
---|
| 2226 | } |
---|
| 2227 | |
---|
| 2228 | ObjectDecl * Pass3::mutate( ObjectDecl *objectDecl ) { |
---|
| 2229 | return handleDecl( objectDecl, objectDecl->get_type() ); |
---|
| 2230 | } |
---|
| 2231 | |
---|
| 2232 | DeclarationWithType * Pass3::mutate( FunctionDecl *functionDecl ) { |
---|
| 2233 | return handleDecl( functionDecl, functionDecl->get_functionType() ); |
---|
| 2234 | } |
---|
| 2235 | |
---|
| 2236 | TypedefDecl * Pass3::mutate( TypedefDecl *typedefDecl ) { |
---|
| 2237 | return handleDecl( typedefDecl, typedefDecl->get_base() ); |
---|
| 2238 | } |
---|
| 2239 | |
---|
| 2240 | TypeDecl * Pass3::mutate( TypeDecl *typeDecl ) { |
---|
| 2241 | // Initializer *init = 0; |
---|
| 2242 | // std::list< Expression *> designators; |
---|
| 2243 | // scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
| 2244 | // if ( typeDecl->get_base() ) { |
---|
| 2245 | // init = new SimpleInit( new SizeofExpr( handleDecl( typeDecl, typeDecl->get_base() ) ), designators ); |
---|
| 2246 | // } |
---|
| 2247 | // return new ObjectDecl( typeDecl->get_name(), Declaration::Extern, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::UnsignedInt ), init ); |
---|
| 2248 | |
---|
| 2249 | scopeTyVars[ typeDecl->get_name() ] = typeDecl->get_kind(); |
---|
| 2250 | return Mutator::mutate( typeDecl ); |
---|
| 2251 | } |
---|
| 2252 | |
---|
| 2253 | Type * Pass3::mutate( PointerType *pointerType ) { |
---|
[6f49cdf] | 2254 | scopeTyVars.beginScope(); |
---|
[05d47278] | 2255 | makeTyVarMap( pointerType, scopeTyVars ); |
---|
| 2256 | |
---|
| 2257 | Type *ret = Mutator::mutate( pointerType ); |
---|
| 2258 | |
---|
[6f49cdf] | 2259 | scopeTyVars.endScope(); |
---|
[05d47278] | 2260 | return ret; |
---|
| 2261 | } |
---|
| 2262 | |
---|
| 2263 | Type * Pass3::mutate( FunctionType *functionType ) { |
---|
[6f49cdf] | 2264 | scopeTyVars.beginScope(); |
---|
[05d47278] | 2265 | makeTyVarMap( functionType, scopeTyVars ); |
---|
| 2266 | |
---|
| 2267 | Type *ret = Mutator::mutate( functionType ); |
---|
| 2268 | |
---|
[6f49cdf] | 2269 | scopeTyVars.endScope(); |
---|
[05d47278] | 2270 | return ret; |
---|
| 2271 | } |
---|
[01aeade] | 2272 | } // anonymous namespace |
---|
[51b7345] | 2273 | } // namespace GenPoly |
---|
[01aeade] | 2274 | |
---|
[51587aa] | 2275 | // Local Variables: // |
---|
| 2276 | // tab-width: 4 // |
---|
| 2277 | // mode: c++ // |
---|
| 2278 | // compile-command: "make install" // |
---|
| 2279 | // End: // |
---|