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//===-- Test for the shuffle operations on the GPU ------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/__support/CPP/bit.h"
#include "src/__support/GPU/utils.h"
#include "test/IntegrationTest/test.h"
using namespace LIBC_NAMESPACE;
// Test to ensure that match any / match all work.
static void test_match() {
// FIXME: Disable on older SMs as they hang for some reason.
#if !defined(__CUDA_ARCH__) || __CUDA_ARCH__ >= 700
uint64_t mask = gpu::get_lane_mask();
EXPECT_EQ(1ull << gpu::get_lane_id(),
gpu::match_any(mask, gpu::get_lane_id()));
EXPECT_EQ(mask, gpu::match_any(mask, 1));
uint64_t full_mask =
gpu::get_lane_size() > 32 ? 0xffffffffffffffff : 0xffffffff;
uint64_t expected = gpu::get_lane_id() < 16 ? 0xffff : full_mask & ~0xffff;
EXPECT_EQ(expected, gpu::match_any(mask, gpu::get_lane_id() < 16));
EXPECT_EQ(mask, gpu::match_all(mask, 1));
EXPECT_EQ(0ull, gpu::match_all(mask, gpu::get_lane_id()));
#endif
}
TEST_MAIN(int argc, char **argv, char **envp) {
if (gpu::get_thread_id() >= gpu::get_lane_size())
return 0;
test_match();
return 0;
}
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