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[libc] Partially implement 'quick_exit' for the GPU
This patch adds a partial implementation of `quick_exit` for the GPU target. This is mainly done to test object libraries for the GPU and will be expanded later. This will simply cause the threads to terminate on the GPU without returning an error code. This functionality will be added later to facilitate unit tests. Reviewed By: sivachandra Differential Revision: https://reviews.llvm.org/D144421
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add_object_library( | ||
gpu_util | ||
SRCS | ||
quick_exit.cpp | ||
HDRS | ||
quick_exit.h | ||
DEPENDS | ||
libc.src.__support.common | ||
) |
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//===---------- GPU implementation of a quick exit function -----*- C++ -*-===// | ||
// | ||
// 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 | ||
// | ||
//===----------------------------------------------------------------------===// | ||
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#ifndef LLVM_LIBC_SRC_SUPPORT_OSUTIL_GPU_QUICK_EXIT_H | ||
#define LLVM_LIBC_SRC_SUPPORT_OSUTIL_GPU_QUICK_EXIT_H | ||
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#include "quick_exit.h" | ||
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#include "src/__support/macros/properties/architectures.h" | ||
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namespace __llvm_libc { | ||
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void quick_exit(int status) { | ||
#if defined(LIBC_TARGET_ARCH_IS_NVPTX) | ||
asm("exit" ::: "memory"); | ||
#elif defined(LIBC_TARGET_ARCH_IS_AMDGPU) | ||
// This will terminate the entire wavefront, may not be valid with divergent | ||
// work items. | ||
asm("s_endpgm" ::: "memory"); | ||
#endif | ||
__builtin_unreachable(); | ||
} | ||
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} // namespace __llvm_libc | ||
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#endif // LLVM_LIBC_SRC_SUPPORT_OSUTIL_GPU_QUICK_EXIT_H |
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//===---------- GPU implementation of a quick exit function -----*- C++ -*-===// | ||
// | ||
// 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 | ||
// | ||
//===----------------------------------------------------------------------===// | ||
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#ifndef LLVM_LIBC_SRC_SUPPORT_OSUTIL_GPU_QUICK_EXIT_H | ||
#define LLVM_LIBC_SRC_SUPPORT_OSUTIL_GPU_QUICK_EXIT_H | ||
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namespace __llvm_libc { | ||
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void quick_exit(int status); | ||
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} // namespace __llvm_libc | ||
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#endif // LLVM_LIBC_SRC_SUPPORT_OSUTIL_GPU_QUICK_EXIT_H |
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