diff options
Diffstat (limited to 'libcxx/utils/google-benchmark/src/cycleclock.h')
| -rw-r--r-- | libcxx/utils/google-benchmark/src/cycleclock.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/libcxx/utils/google-benchmark/src/cycleclock.h b/libcxx/utils/google-benchmark/src/cycleclock.h index 4251fe4c32a..00d57641676 100644 --- a/libcxx/utils/google-benchmark/src/cycleclock.h +++ b/libcxx/utils/google-benchmark/src/cycleclock.h @@ -121,7 +121,7 @@ inline BENCHMARK_ALWAYS_INLINE int64_t Now() { // because is provides nanosecond resolution (which is noticable at // least for PNaCl modules running on x86 Mac & Linux). // Initialize to always return 0 if clock_gettime fails. - struct timespec ts = { 0, 0 }; + struct timespec ts = {0, 0}; clock_gettime(CLOCK_MONOTONIC, &ts); return static_cast<int64_t>(ts.tv_sec) * 1000000000 + ts.tv_nsec; #elif defined(__aarch64__) @@ -159,6 +159,11 @@ inline BENCHMARK_ALWAYS_INLINE int64_t Now() { struct timeval tv; gettimeofday(&tv, nullptr); return static_cast<int64_t>(tv.tv_sec) * 1000000 + tv.tv_usec; +#elif defined(__s390__) // Covers both s390 and s390x. + // Return the CPU clock. + uint64_t tsc; + asm("stck %0" : "=Q"(tsc) : : "cc"); + return tsc; #else // The soft failover to a generic implementation is automatic only for ARM. // For other platforms the developer is expected to make an attempt to create |
