/* * 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 { namespace 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 LoadUtils } // namespace wasm #endif // wasm_ir_load_h