70 lines · cpp
1// RUN: %libomptarget-compilexx-run-and-check-generic2//3// REQUIRES: gpu4 5#include <cassert>6#include <cmath>7#include <cstdint>8#include <cstdio>9#include <limits>10#include <ompx.h>11#include <type_traits>12 13#pragma omp begin declare variant match(device = {arch(amdgcn)})14unsigned get_warp_size() { return __builtin_amdgcn_wavefrontsize(); }15#pragma omp end declare variant16 17#pragma omp begin declare variant match(device = {arch(nvptx64)})18unsigned get_warp_size() { return __nvvm_read_ptx_sreg_warpsize(); }19#pragma omp end declare variant20 21#pragma omp begin declare variant match(device = {kind(cpu)})22unsigned get_warp_size() { return 1; }23#pragma omp end declare variant24 25template <typename T, std::enable_if_t<std::is_integral<T>::value, bool> = true>26bool equal(T LHS, T RHS) {27 return LHS == RHS;28}29 30template <typename T,31 std::enable_if_t<std::is_floating_point<T>::value, bool> = true>32bool equal(T LHS, T RHS) {33 return __builtin_fabs(LHS - RHS) < std::numeric_limits<T>::epsilon();34}35 36template <typename T> void test() {37 constexpr const int num_blocks = 1;38 constexpr const int block_size = 256;39 constexpr const int N = num_blocks * block_size;40 int *res = new int[N];41 42#pragma omp target teams ompx_bare num_teams(num_blocks) thread_limit(block_size) \43 map(from: res[0:N])44 {45 int tid = ompx_thread_id_x();46 T val = ompx::shfl_down_sync(~0U, static_cast<T>(tid), 1);47 int warp_size = get_warp_size();48 if ((tid & (warp_size - 1)) != warp_size - 1)49 res[tid] = equal(val, static_cast<T>(tid + 1));50 else51 res[tid] = equal(val, static_cast<T>(tid));52 }53 54 for (int i = 0; i < N; ++i)55 assert(res[i]);56 57 delete[] res;58}59 60int main(int argc, char *argv[]) {61 test<int32_t>();62 test<int64_t>();63 test<float>();64 test<double>();65 // CHECK: PASS66 printf("PASS\n");67 68 return 0;69}70