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unscaledcycleclock: remove RISC-V support #1644

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unscaledcycleclock: remove RISC-V support #1644

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12 changes: 0 additions & 12 deletions absl/base/internal/unscaledcycleclock.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -121,18 +121,6 @@ double UnscaledCycleClock::Frequency() {
return aarch64_timer_frequency;
}

#elif defined(__riscv)

int64_t UnscaledCycleClock::Now() {
int64_t virtual_timer_value;
asm volatile("rdcycle %0" : "=r"(virtual_timer_value));
return virtual_timer_value;
}

double UnscaledCycleClock::Frequency() {
return base_internal::NominalCPUFrequency();
}

#elif defined(_M_IX86) || defined(_M_X64)

#pragma intrinsic(__rdtsc)
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6 changes: 3 additions & 3 deletions absl/base/internal/unscaledcycleclock_config.h
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Expand Up @@ -21,8 +21,8 @@

// The following platforms have an implementation of a hardware counter.
#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__) || \
defined(__powerpc__) || defined(__ppc__) || defined(__riscv) || \
defined(_M_IX86) || (defined(_M_X64) && !defined(_M_ARM64EC))
defined(__powerpc__) || defined(__ppc__) || defined(_M_IX86) || \
(defined(_M_X64) && !defined(_M_ARM64EC))
#define ABSL_HAVE_UNSCALED_CYCLECLOCK_IMPLEMENTATION 1
#else
#define ABSL_HAVE_UNSCALED_CYCLECLOCK_IMPLEMENTATION 0
Expand Down Expand Up @@ -53,7 +53,7 @@
#if ABSL_USE_UNSCALED_CYCLECLOCK
// This macro can be used to test if UnscaledCycleClock::Frequency()
// is NominalCPUFrequency() on a particular platform.
#if (defined(__i386__) || defined(__x86_64__) || defined(__riscv) || \
#if (defined(__i386__) || defined(__x86_64__) || \
defined(_M_IX86) || defined(_M_X64))
#define ABSL_INTERNAL_UNSCALED_CYCLECLOCK_FREQUENCY_IS_CPU_FREQUENCY
#endif
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