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/*
* 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::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 wasm::Properties
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