124 lines
3.2 KiB
C++
124 lines
3.2 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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// loads [simd.load]
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// template <class U, class Flags> void copy_from(const U* mem, Flags f);
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#include <experimental/simd>
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#include <cstdint>
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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_load(Args&&... args) -> decltype(
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std::declval<ex::native_simd<T>>().copy_from(std::forward<Args>(args)...),
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void()) = delete;
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template <class T>
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void not_supported_load(...) {}
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template <class T, class... Args>
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auto supported_load(Args&&... args) -> decltype(
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std::declval<ex::native_simd<T>>().copy_from(std::forward<Args>(args)...),
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void()) {}
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template <class T>
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void supported_load(...) = delete;
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void compile_load() {
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supported_load<int>((int*)nullptr, ex::element_aligned_tag());
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supported_load<uint32_t>((int*)nullptr, ex::element_aligned_tag());
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supported_load<double>((float*)nullptr, ex::element_aligned_tag());
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supported_load<uint16_t>((unsigned int*)nullptr, ex::element_aligned_tag());
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supported_load<uint32_t>((float*)nullptr, ex::element_aligned_tag());
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not_supported_load<int>((int*)nullptr, int());
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}
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template <typename SimdType>
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void test_load() {
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alignas(32) int32_t buffer[] = {4, 3, 2, 1};
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{
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SimdType a;
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a.copy_from(buffer, ex::element_aligned_tag());
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assert(a[0] == 4);
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assert(a[1] == 3);
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assert(a[2] == 2);
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assert(a[3] == 1);
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}
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{
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SimdType a;
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a.copy_from(buffer, ex::vector_aligned_tag());
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assert(a[0] == 4);
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assert(a[1] == 3);
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assert(a[2] == 2);
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assert(a[3] == 1);
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}
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{
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SimdType a;
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a.copy_from(buffer, ex::overaligned_tag<32>());
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assert(a[0] == 4);
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assert(a[1] == 3);
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assert(a[2] == 2);
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assert(a[3] == 1);
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}
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{
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SimdType a;
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a.copy_from(buffer, ex::element_aligned);
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assert(a[0] == 4);
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assert(a[1] == 3);
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assert(a[2] == 2);
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assert(a[3] == 1);
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}
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{
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SimdType a;
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a.copy_from(buffer, ex::vector_aligned);
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assert(a[0] == 4);
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assert(a[1] == 3);
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assert(a[2] == 2);
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assert(a[3] == 1);
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}
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{
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SimdType a;
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a.copy_from(buffer, ex::overaligned<32>);
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assert(a[0] == 4);
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assert(a[1] == 3);
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assert(a[2] == 2);
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assert(a[3] == 1);
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}
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}
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template <typename SimdType>
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void test_converting_load() {
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float buffer[] = {1., 2., 4., 8.};
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SimdType a;
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a.copy_from(buffer, ex::element_aligned_tag());
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assert(a[0] == 1);
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assert(a[1] == 2);
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assert(a[2] == 4);
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assert(a[3] == 8);
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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_load<ex::native_simd<int32_t>>();
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test_load<ex::fixed_size_simd<int32_t, 4>>();
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test_converting_load<ex::native_simd<int32_t>>();
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test_converting_load<ex::fixed_size_simd<int32_t, 4>>();
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return 0;
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}
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