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[libc][Obvious] Fix timing on AMDGPU not being initialized

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Summary:
Reviewer requested that this routine not be a macro, however that means
that it was not being intitialized as the static initializer was done
before the memcpy from the device. Fix this so we can get timing
information.
This commit is contained in:
Joseph Huber 2023-07-05 16:07:21 -05:00
parent a2b7297dff
commit 515bd1c9b8
1 changed files with 4 additions and 3 deletions
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7
libc/test/UnitTest/LibcTest.cpp
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@ -19,11 +19,12 @@
#include "src/__support/GPU/utils.h"
static long clock() { return __llvm_libc::gpu::fixed_frequency_clock(); }
#if defined(LIBC_TARGET_ARCH_IS_NVPTX)
uint64_t CLOCKS_PER_SEC = 1000000000UL;
#define CLOCKS_PER_SEC 1000000000UL
#else
// The AMDGPU loader needs to initialize this at runtime by querying the driver.
extern "C" [[gnu::visibility("protected")]] uint64_t __llvm_libc_clock_freq;
uint64_t CLOCKS_PER_SEC = __llvm_libc_clock_freq;
extern "C" [[gnu::visibility("protected")]] uint64_t
[[clang::address_space(4)]] __llvm_libc_clock_freq;
#define CLOCKS_PER_SEC __llvm_libc_clock_freq
#endif
#else
static long clock() { return 0; }