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/*
* Copyright 2017 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_load_h
#define wasm_ir_load_h
#include "wasm.h"
namespace wasm::LoadUtils {
// checks if the sign of a load matters, which is when an integer
// load is of fewer bytes than the size of the type (so we must
// fill in bits either signed or unsigned wise)
inline bool isSignRelevant(Load* load) {
auto type = load->type;
if (load->type == Type::unreachable) {
return false;
}
return !type.isFloat() && load->bytes < type.getByteSize();
}
// check if a load can be signed (which some opts want to do)
inline bool canBeSigned(Load* load) { return !load->isAtomic; }
} // namespace wasm::LoadUtils
#endif // wasm_ir_load_h
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