| /* |
| * Copyright (C) 2019 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "WHLSLPruneUnreachableStandardLibraryFunctions.h" |
| |
| #if ENABLE(WEBGPU) |
| |
| #include "WHLSLAST.h" |
| #include "WHLSLProgram.h" |
| #include "WHLSLVisitor.h" |
| |
| namespace WebCore { |
| |
| namespace WHLSL { |
| |
| class ReachableStdlibFunctions final : public Visitor { |
| public: |
| void visit(AST::FunctionDefinition& function) override |
| { |
| auto addResult = m_reachableFunctions.add(&function); |
| if (addResult.isNewEntry) |
| Visitor::visit(function); |
| } |
| |
| void visit(AST::CallExpression& callExpression) override |
| { |
| Visitor::visit(callExpression); |
| if (is<AST::FunctionDefinition>(callExpression.function())) |
| visit(downcast<AST::FunctionDefinition>(callExpression.function())); |
| } |
| |
| HashSet<AST::FunctionDefinition*> takeReachableFunctions() { return WTFMove(m_reachableFunctions); } |
| |
| private: |
| HashSet<AST::FunctionDefinition*> m_reachableFunctions; |
| }; |
| |
| void pruneUnreachableStandardLibraryFunctions(Program& program) |
| { |
| ReachableStdlibFunctions reachableStdlibFunctions; |
| Vector<UniqueRef<AST::FunctionDefinition>> functionDefinitions = WTFMove(program.functionDefinitions()); |
| for (auto& function : functionDefinitions) { |
| if (function->parsingMode() != ParsingMode::StandardLibrary) |
| reachableStdlibFunctions.visit(function.get()); |
| else |
| RELEASE_ASSERT(!function->entryPointType()); |
| } |
| |
| auto reachableFunctions = reachableStdlibFunctions.takeReachableFunctions(); |
| Vector<UniqueRef<AST::FunctionDefinition>> newFunctionDefinitions; |
| for (UniqueRef<AST::FunctionDefinition>& entry : functionDefinitions) { |
| if (reachableFunctions.contains(&entry.get())) |
| newFunctionDefinitions.append(WTFMove(entry)); |
| } |
| |
| program.functionDefinitions() = WTFMove(newFunctionDefinitions); |
| } |
| |
| } // namespace WHLSL |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(WEBGPU) |