| 1 | //===-- Generic utilities for GPU timing ----------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "time_utils.h" |
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| 10 | |
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| 11 | namespace LIBC_NAMESPACE { |
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| 12 | |
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| 13 | #if defined(LIBC_TARGET_ARCH_IS_AMDGPU) |
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| 14 | // This is expected to be initialized by the runtime if the default value is |
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| 15 | // insufficient. |
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| 16 | // TODO: Once we have another use-case for this we should put it in a common |
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| 17 | // device environment struct. |
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| 18 | extern "C" [[gnu::visibility("protected" )]] uint64_t |
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| 19 | [[clang::address_space(4)]] __llvm_libc_clock_freq = clock_freq; |
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| 20 | #endif |
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| 21 | |
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| 22 | } // namespace LIBC_NAMESPACE |
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| 23 | |
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