/* * Copyright 2015 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_compiler_support_h #define wasm_compiler_support_h #ifndef __has_feature #define __has_feature(x) 0 #endif #ifndef __has_builtin #define __has_builtin(x) 0 #endif #if __has_builtin(__builtin_unreachable) #define WASM_BUILTIN_UNREACHABLE __builtin_unreachable() #elif defined(_MSC_VER) #define WASM_BUILTIN_UNREACHABLE __assume(false) #endif #ifdef __GNUC__ #define WASM_NORETURN __attribute__((noreturn)) #elif defined(_MSC_VER) #define WASM_NORETURN __declspec(noreturn) #else #define WASM_NORETURN #endif // The code might contain TODOs or stubs that read some values but do nothing // with them. The compiler might fail with [-Werror,-Wunused-variable]. // The WASM_UNUSED(varible) is a wrapper that helps to suppress the error. #define WASM_UNUSED(expr) \ do { \ if (sizeof expr) { \ (void)0; \ } \ } while (0) #endif // wasm_compiler_support_h