forked from OSchip/llvm-project
93 lines
2.4 KiB
C++
93 lines
2.4 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++98, c++03, c++11, c++14
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// <experimental/simd>
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//
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// [simd.class]
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// template <class G> explicit simd(G&& gen);
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#include <experimental/simd>
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#include <cstdint>
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#include <cassert>
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#include "test_macros.h"
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namespace ex = std::experimental::parallelism_v2;
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template <class T, class... Args>
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auto not_supported_simd128_ctor(Args&&... args) -> decltype(
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ex::fixed_size_simd<T, 16 / sizeof(T)>(std::forward<Args>(args)...),
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void()) = delete;
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template <class T>
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void not_supported_simd128_ctor(...) {}
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template <class T, class... Args>
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auto supported_simd128_ctor(Args&&... args) -> decltype(
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ex::fixed_size_simd<T, 16 / sizeof(T)>(std::forward<Args>(args)...),
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void()) {}
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template <class T>
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void supported_simd128_ctor(...) = delete;
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struct identity {
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template <size_t value>
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int operator()(std::integral_constant<size_t, value>) const {
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return value;
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}
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};
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void compile_generator() {
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supported_simd128_ctor<int>(identity());
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not_supported_simd128_ctor<int>([](int i) { return float(i); });
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not_supported_simd128_ctor<int>([](intptr_t i) { return (int*)(i); });
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not_supported_simd128_ctor<int>([](int* i) { return i; });
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}
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struct limited_identity {
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template <size_t value>
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typename std::conditional<value <= 2, int32_t, int64_t>::type
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operator()(std::integral_constant<size_t, value>) const {
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return value;
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}
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};
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void compile_limited_identity() {
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supported_simd128_ctor<int64_t>(limited_identity());
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not_supported_simd128_ctor<int32_t>(limited_identity());
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}
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template <typename SimdType>
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void test_generator() {
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{
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SimdType a([](int i) { return i; });
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assert(a[0] == 0);
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assert(a[1] == 1);
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assert(a[2] == 2);
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assert(a[3] == 3);
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}
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{
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SimdType a([](int i) { return 2 * i - 1; });
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assert(a[0] == -1);
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assert(a[1] == 1);
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assert(a[2] == 3);
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assert(a[3] == 5);
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}
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}
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int main(int, char**) {
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// TODO: adjust the tests when this assertion fails.
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assert(ex::native_simd<int32_t>::size() >= 4);
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test_generator<ex::native_simd<int32_t>>();
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test_generator<ex::fixed_size_simd<int32_t, 4>>();
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return 0;
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}
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