[eb779d5] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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| 7 | // Corun.cpp -- generate code needed by the actor system |
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| 8 | // |
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| 9 | // Author : Colby Parsons |
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| 10 | // Created On : Monday October 9 15:16:42 2023 |
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| 11 | // Last Modified By : Colby Parsons |
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| 12 | // Last Modified On : Monday October 9 15:16:42 2023 |
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| 13 | // Update Count : 0 |
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| 14 | // |
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| 15 | |
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| 16 | #include "AST/Decl.hpp" |
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| 17 | #include "AST/Expr.hpp" |
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| 18 | #include "AST/Pass.hpp" |
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| 19 | #include "AST/Stmt.hpp" |
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| 20 | #include "AST/TranslationUnit.hpp" |
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| 21 | #include "Common/UniqueName.h" |
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| 22 | using namespace ast; |
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| 23 | using namespace std; |
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| 24 | |
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| 25 | namespace Concurrency { |
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| 26 | |
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| 27 | struct CorunKeyword : public WithDeclsToAdd<>, public WithStmtsToAdd<> { |
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| 28 | UniqueName CorunFnNamer = "__CFA_corun_lambda_"s; |
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[3d9d017] | 29 | UniqueName CoforFnNamer = "__CFA_cofor_lambda_"s; |
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| 30 | // UniqueName CoforFnVarNamer = "__CFA_cofor_lambda_var"s; |
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[eb779d5] | 31 | UniqueName RunnerBlockNamer = "__CFA_corun_block_"s; |
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[3d9d017] | 32 | |
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| 33 | string coforArgName = "__CFA_cofor_lambda_arg"; |
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| 34 | string numProcsName = "__CFA_cofor_num_procs"; |
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| 35 | string currProcsName = "__CFA_cofor_curr_procs"; |
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| 36 | string thdArrName = "__CFA_cofor_thread_array"; |
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| 37 | string loopTempName = "__CFA_cofor_loop_temp"; |
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| 38 | |
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[eb779d5] | 39 | |
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| 40 | const StructDecl * runnerBlockDecl = nullptr; |
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[3d9d017] | 41 | const StructDecl * coforRunnerDecl = nullptr; |
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[eb779d5] | 42 | |
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[3d9d017] | 43 | // Finds runner_block (corun task) and cofor_runner (cofor task) decls |
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[eb779d5] | 44 | void previsit( const StructDecl * decl ) { |
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| 45 | if ( !decl->body ) { |
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| 46 | return; |
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| 47 | } else if ( "runner_block" == decl->name ) { |
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| 48 | assert( !runnerBlockDecl ); |
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| 49 | runnerBlockDecl = decl; |
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[3d9d017] | 50 | } else if ( "cofor_runner" == decl->name ) { |
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| 51 | assert( !coforRunnerDecl ); |
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| 52 | coforRunnerDecl = decl; |
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[eb779d5] | 53 | } |
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| 54 | } |
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| 55 | |
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[3d9d017] | 56 | // codegen for cofor statements |
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| 57 | Stmt * postvisit( const CoforStmt * stmt ) { |
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| 58 | if ( !runnerBlockDecl || !coforRunnerDecl ) |
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| 59 | SemanticError( stmt->location, "To use cofor statements add #include <cofor.hfa>\n" ); |
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| 60 | |
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| 61 | if ( stmt->inits.size() != 1 ) |
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| 62 | SemanticError( stmt->location, "Cofor statements must have a single initializer in the loop control\n" ); |
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| 63 | |
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| 64 | if ( !stmt->body ) |
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| 65 | return nullptr; |
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| 66 | |
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| 67 | const CodeLocation & loc = stmt->location; |
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| 68 | const string fnName = CoforFnNamer.newName(); |
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| 69 | |
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| 70 | CompoundStmt * body = new CompoundStmt( loc ); |
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| 71 | |
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| 72 | // push back cofor initializer to generated body |
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| 73 | body->push_back( deepCopy( stmt->inits.at(0) ) ); |
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| 74 | |
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| 75 | CompoundStmt * fnBody = new CompoundStmt( loc ); |
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| 76 | |
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| 77 | const DeclStmt * declStmtPtr = dynamic_cast<const DeclStmt *>(stmt->inits.at(0).get()); |
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| 78 | if ( ! declStmtPtr ) |
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| 79 | SemanticError( stmt->location, "Cofor statement initializer is somehow not a decl statement?\n" ); |
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| 80 | |
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| 81 | const Decl * declPtr = dynamic_cast<const Decl *>(declStmtPtr->decl.get()); |
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| 82 | if ( ! declPtr ) |
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| 83 | SemanticError( stmt->location, "Cofor statement initializer is somehow not a decl?\n" ); |
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| 84 | |
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| 85 | Type * initType = new TypeofType( new NameExpr( loc, declPtr->name ) ); |
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| 86 | |
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| 87 | // Generates: |
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| 88 | // typeof(init) __CFA_cofor_lambda_var = *((typeof(init) *)val); |
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| 89 | fnBody->push_back( new DeclStmt( loc, |
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| 90 | new ObjectDecl( loc, |
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| 91 | declPtr->name, |
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| 92 | initType, |
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| 93 | new SingleInit( loc, |
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| 94 | UntypedExpr::createDeref( loc, |
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| 95 | new CastExpr( loc, |
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| 96 | new NameExpr( loc, coforArgName ), |
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| 97 | new PointerType( initType ), ExplicitCast |
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| 98 | ) |
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| 99 | ) |
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| 100 | ) |
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| 101 | ) |
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| 102 | )); |
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| 103 | |
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| 104 | // push rest of cofor body into loop lambda |
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| 105 | fnBody->push_back( deepCopy( stmt->body ) ); |
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| 106 | |
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| 107 | // Generates: |
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| 108 | // void __CFA_cofor_lambda_() { |
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| 109 | // typeof(init) __CFA_cofor_lambda_var = *((typeof(init) *)val); |
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| 110 | // stmt->body; |
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| 111 | // } |
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| 112 | Stmt * coforLambda = new DeclStmt( loc, |
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| 113 | new FunctionDecl( loc, |
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| 114 | fnName, // name |
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| 115 | {}, // forall |
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| 116 | { |
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| 117 | new ObjectDecl( loc, |
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| 118 | coforArgName, |
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| 119 | new ast::PointerType( new ast::VoidType() ) |
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| 120 | ) |
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| 121 | }, // params |
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| 122 | {}, // return |
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| 123 | fnBody // body |
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| 124 | ) |
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| 125 | ); |
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| 126 | body->push_back( coforLambda ); |
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| 127 | |
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| 128 | // Generates: |
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| 129 | // unsigned __CFA_cofor_num_procs = get_proc_count(); |
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| 130 | body->push_back( new DeclStmt( loc, |
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| 131 | new ObjectDecl( loc, |
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| 132 | numProcsName, |
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| 133 | new BasicType( BasicType::Kind::UnsignedInt ), |
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| 134 | new SingleInit( loc, |
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| 135 | new UntypedExpr( loc, |
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| 136 | new NameExpr( loc, "get_proc_count" ), |
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| 137 | {} |
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| 138 | ) |
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| 139 | ) |
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| 140 | ) |
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| 141 | ) |
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| 142 | ); |
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| 143 | |
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| 144 | // Generates: |
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| 145 | // unsigned __CFA_cofor_curr_procs = 0; |
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| 146 | body->push_back( new DeclStmt( loc, |
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| 147 | new ObjectDecl( loc, |
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| 148 | currProcsName, |
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| 149 | new BasicType( BasicType::Kind::UnsignedInt ), |
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| 150 | new SingleInit( loc, ConstantExpr::from_int( loc, 0 ) ) |
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| 151 | ) |
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| 152 | ) |
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| 153 | ); |
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| 154 | |
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| 155 | // Generates: |
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| 156 | // unsigned cofor_runner __CFA_cofor_thread_array[nprocs]; |
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| 157 | body->push_back( new DeclStmt( loc, |
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| 158 | new ObjectDecl( loc, |
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| 159 | thdArrName, |
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| 160 | new ast::ArrayType( |
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| 161 | new StructInstType( coforRunnerDecl ), |
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| 162 | new NameExpr( loc, numProcsName ), |
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| 163 | ast::FixedLen, |
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| 164 | ast::DynamicDim |
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| 165 | ) |
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| 166 | ) |
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| 167 | ) |
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| 168 | ); |
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| 169 | |
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| 170 | // Generates: |
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| 171 | // start_runners( __CFA_cofor_thread_array, __CFA_cofor_num_procs, __CFA_cofor_lambda_ ); |
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| 172 | body->push_back( new ExprStmt( loc, |
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| 173 | new UntypedExpr( loc, |
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| 174 | new NameExpr( loc, "start_runners" ), |
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| 175 | { |
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| 176 | new NameExpr( loc, thdArrName ), |
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| 177 | new NameExpr( loc, numProcsName ), |
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| 178 | new NameExpr( loc, fnName ) |
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| 179 | } |
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| 180 | ) |
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| 181 | )); |
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| 182 | |
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| 183 | // Generates: |
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| 184 | // typeof(initializer) * __CFA_cofor_loop_temp = malloc(); |
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| 185 | CompoundStmt * forLoopBody = new CompoundStmt( loc ); |
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| 186 | forLoopBody->push_back( new DeclStmt( loc, |
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| 187 | new ObjectDecl( loc, |
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| 188 | loopTempName, |
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| 189 | new PointerType( initType ), |
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| 190 | new SingleInit( loc, |
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| 191 | new UntypedExpr( loc, |
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| 192 | new NameExpr( loc, "malloc" ), |
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| 193 | {} |
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| 194 | ) |
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| 195 | ) |
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| 196 | ) |
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| 197 | ) |
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| 198 | ); |
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| 199 | |
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| 200 | // Generates: |
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| 201 | // *__CFA_cofor_loop_temp = initializer; |
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| 202 | forLoopBody->push_back( new ExprStmt( loc, |
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| 203 | UntypedExpr::createAssign( loc, |
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| 204 | UntypedExpr::createDeref( loc, new NameExpr( loc, loopTempName ) ), |
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| 205 | new NameExpr( loc, declPtr->name ) |
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| 206 | ) |
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| 207 | )); |
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| 208 | |
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| 209 | // Generates: |
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| 210 | // send_work( __CFA_cofor_thread_array, __CFA_cofor_num_procs, |
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| 211 | // __CFA_cofor_curr_procs, __CFA_cofor_loop_temp ); |
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| 212 | forLoopBody->push_back( new ExprStmt( loc, |
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| 213 | new UntypedExpr( loc, |
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| 214 | new NameExpr( loc, "send_work" ), |
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| 215 | { |
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| 216 | new NameExpr( loc, thdArrName ), |
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| 217 | new NameExpr( loc, numProcsName ), |
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| 218 | new NameExpr( loc, currProcsName ), |
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| 219 | new NameExpr( loc, loopTempName ) |
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| 220 | } |
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| 221 | ) |
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| 222 | )); |
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| 223 | |
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| 224 | body->push_back( new ForStmt( loc, |
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| 225 | {}, |
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| 226 | deepCopy( stmt->cond ), |
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| 227 | deepCopy( stmt->inc ), |
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| 228 | forLoopBody |
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| 229 | )); |
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| 230 | |
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| 231 | // Generates: |
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| 232 | // end_runners( __CFA_cofor_thread_array, __CFA_cofor_num_procs ); |
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| 233 | body->push_back( new ExprStmt( loc, |
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| 234 | new UntypedExpr( loc, |
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| 235 | new NameExpr( loc, "end_runners" ), |
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| 236 | { |
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| 237 | new NameExpr( loc, thdArrName ), |
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| 238 | new NameExpr( loc, numProcsName ) |
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| 239 | } |
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| 240 | ) |
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| 241 | )); |
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| 242 | |
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| 243 | return body; |
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| 244 | } |
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| 245 | |
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| 246 | // codegen for corun statements |
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[eb779d5] | 247 | Stmt * postvisit( const CorunStmt * stmt ) { |
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[3d9d017] | 248 | if ( !runnerBlockDecl || !coforRunnerDecl ) |
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[72b518fc] | 249 | SemanticError( stmt->location, "To use corun statements add #include <cofor.hfa>\n" ); |
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| 250 | |
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[eb779d5] | 251 | if ( !stmt->stmt ) |
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| 252 | return nullptr; |
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[cf3da24] | 253 | |
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[eb779d5] | 254 | const CodeLocation & loc = stmt->location; |
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| 255 | const string fnName = CorunFnNamer.newName(); |
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| 256 | const string objName = RunnerBlockNamer.newName(); |
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| 257 | |
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| 258 | // Generates: |
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| 259 | // void __CFA_corun_lambda_() { ... stmt->stmt ... } |
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| 260 | Stmt * runnerLambda = new DeclStmt( loc, |
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| 261 | new FunctionDecl( loc, |
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| 262 | fnName, // name |
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| 263 | {}, // forall |
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| 264 | {}, // params |
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| 265 | {}, // return |
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| 266 | new CompoundStmt( loc, { deepCopy(stmt->stmt) } ) // body |
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| 267 | ) |
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| 268 | ); |
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| 269 | |
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| 270 | // Generates: |
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| 271 | // runner_block __CFA_corun_block_; |
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| 272 | Stmt * objDecl = new DeclStmt( loc, |
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| 273 | new ObjectDecl( loc, |
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| 274 | objName, |
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| 275 | new StructInstType( runnerBlockDecl ) |
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| 276 | ) |
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| 277 | ); |
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| 278 | |
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| 279 | // Generates: |
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| 280 | // __CFA_corun_block_{ __CFA_corun_lambda_ }; |
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| 281 | Stmt * threadStart = new ExprStmt( loc, |
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[cf3da24] | 282 | new UntypedExpr ( loc, |
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[eb779d5] | 283 | new NameExpr( loc, "?{}" ), |
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| 284 | { |
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| 285 | new NameExpr( loc, objName ), |
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| 286 | new NameExpr( loc, fnName ) |
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| 287 | } |
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| 288 | ) |
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| 289 | ); |
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| 290 | |
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| 291 | stmtsToAddBefore.push_back( runnerLambda ); |
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| 292 | stmtsToAddBefore.push_back( objDecl ); |
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| 293 | |
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| 294 | return threadStart; |
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| 295 | } |
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| 296 | }; |
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| 297 | |
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| 298 | void implementCorun( TranslationUnit & translationUnit ) { |
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| 299 | Pass<CorunKeyword>::run( translationUnit ); |
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| 300 | } |
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| 301 | |
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[cf3da24] | 302 | } // namespace Concurrency |
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