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/*
* Copyright 2024 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.
*/
#ifndef wasm_ir_return_h
#define wasm_ir_return_h
#include "wasm.h"
namespace wasm::ReturnUtils {
// Removes values from both explicit returns and implicit ones (values that flow
// from the body). This is useful after changing a function's type to no longer
// return anything.
//
// This does *not* handle return calls, and will error on them. Removing a
// return call may change the semantics of the program, so we do not do it
// automatically here.
void removeReturns(Function* func, Module& wasm);
// Return a map of every function to whether it does a return call.
using ReturnCallersMap = std::unordered_map<Function*, bool>;
ReturnCallersMap findReturnCallers(Module& wasm);
} // namespace wasm::ReturnUtils
#endif // wasm_ir_return_h
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