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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03, c++11, c++14
// See GCC PR63723.
// UNSUPPORTED: gcc-4.9
// <experimental/simd>
//
// [simd.class]
// template <class G> explicit simd(G&& gen);
#include <experimental/simd>
#include <cstdint>
namespace ex = std::experimental::parallelism_v2;
template <class T, class... Args>
auto not_supported_simd128_ctor(Args&&... args) -> decltype(
ex::fixed_size_simd<T, 16 / sizeof(T)>(std::forward<Args>(args)...),
void()) = delete;
template <class T>
void not_supported_simd128_ctor(...) {}
template <class T, class... Args>
auto supported_simd128_ctor(Args&&... args) -> decltype(
ex::fixed_size_simd<T, 16 / sizeof(T)>(std::forward<Args>(args)...),
void()) {}
template <class T>
void supported_simd128_ctor(...) = delete;
struct identity {
template <size_t value>
int operator()(std::integral_constant<size_t, value>) const {
return value;
}
};
void compile_generator() {
supported_simd128_ctor<int>(identity());
not_supported_simd128_ctor<int>([](int i) { return float(i); });
not_supported_simd128_ctor<int>([](intptr_t i) { return (int*)(i); });
not_supported_simd128_ctor<int>([](int* i) { return i; });
}
struct limited_identity {
template <size_t value>
typename std::conditional<value <= 2, int32_t, int64_t>::type
operator()(std::integral_constant<size_t, value>) const {
return value;
}
};
void compile_limited_identity() {
supported_simd128_ctor<int64_t>(limited_identity());
not_supported_simd128_ctor<int32_t>(limited_identity());
}
template <typename SimdType>
void test_generator() {
{
SimdType a([](int i) { return i; });
assert(a[0] == 0);
assert(a[1] == 1);
assert(a[2] == 2);
assert(a[3] == 3);
}
{
SimdType a([](int i) { return 2 * i - 1; });
assert(a[0] == -1);
assert(a[1] == 1);
assert(a[2] == 3);
assert(a[3] == 5);
}
}
int main() {
// TODO: adjust the tests when this assertion fails.
assert(ex::native_simd<int32_t>::size() >= 4);
test_generator<ex::native_simd<int32_t>>();
test_generator<ex::fixed_size_simd<int32_t, 4>>();
}
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