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optimize timer cycles using rdtime on LoongArch64 #749

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optimize timer cycles using rdtime on LoongArch64 #749

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1 change: 1 addition & 0 deletions include/my_rdtsc.h
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Original file line number Diff line number Diff line change
Expand Up @@ -138,5 +138,6 @@ void my_timer_init(MY_TIMER_INFO *mti);
#define MY_TIMER_ROUTINE_ASM_AARCH64 28
#define MY_TIMER_ROUTINE_GET_THREAD_TIMES 29
#define MY_TIMER_ROUTINE_ASM_S390X 30
#define MY_TIMER_ROUTINE_ASM_LOONGARCH64 31

#endif
8 changes: 8 additions & 0 deletions mysys/my_rdtsc.cc
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Expand Up @@ -169,6 +169,12 @@ ulonglong my_timer_cycles() {
__asm __volatile__("mrs %[rt],cntvct_el0" : [rt] "=r"(result));
return result;
}
#elif defined(__GNUC__) && defined(__loongarch_lp64)
{
ulonglong result;
__asm__ __volatile__("rdtime.d %0, $zero" : "=r"(result) : :);
return result;
}
#elif defined(__GNUC__) && defined(__s390x__)
{
uint64_t result;
Expand Down Expand Up @@ -504,6 +510,8 @@ void my_timer_init(MY_TIMER_INFO *mti) {
mti->cycles.routine = MY_TIMER_ROUTINE_ASM_GCC_SPARC64;
#elif defined(__GNUC__) && defined(__aarch64__)
mti->cycles.routine = MY_TIMER_ROUTINE_ASM_AARCH64;
#elif defined(__GNUC__) && defined(__loongarch_lp64)
mti->cycles.routine = MY_TIMER_ROUTINE_ASM_LOONGARCH64;
#elif defined(__GNUC__) && defined(__s390x__)
mti->cycles.routine = MY_TIMER_ROUTINE_ASM_S390X;
#elif defined(HAVE_SYS_TIMES_H) && defined(HAVE_GETHRTIME)
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