| /* |
| * Copyright 2021 WebAssembly Community Group participants |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "ir/properties.h" |
| #include "wasm-traversal.h" |
| |
| namespace wasm { |
| |
| namespace Properties { |
| |
| bool isGenerative(Expression* curr, FeatureSet features) { |
| // Practically no wasm instructions are generative. Exceptions occur only in |
| // GC atm. |
| if (!features.hasGC()) { |
| return false; |
| } |
| |
| struct Scanner : public PostWalker<Scanner> { |
| bool generative = false; |
| void visitStructNew(StructNew* curr) { generative = true; } |
| void visitArrayNew(ArrayNew* curr) { generative = true; } |
| void visitArrayInit(ArrayInit* curr) { generative = true; } |
| } scanner; |
| scanner.walk(curr); |
| return scanner.generative; |
| } |
| |
| } // namespace Properties |
| |
| } // namespace wasm |