https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103146
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-11-09
Ever confirmed|0 |1
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Arseny Solokha from comment #0)
> Is the corresponding check really sufficient for PowerISA before 3.0?
Hmm:
#ifdef USE_DARN
unsigned int
__attribute__((target("cpu=power9")))
__ppc_darn(void*)
{
const uint64_t failed = -1;
unsigned int retries = 10;
uint64_t val = __builtin_darn();
while (val == failed) [[__unlikely__]]
{
if (--retries == 0)
std::__throw_runtime_error(__N("random_device: darn failed"));
val = __builtin_darn();
}
return (uint32_t)val;
}
#endif
BU_P9_MISC_0 (DARN_32, "darn_32", MISC, darn_32)
BU_P9_64BIT_MISC_0 (DARN_RAW, "darn_raw", MISC, darn_raw)
BU_P9_64BIT_MISC_0 (DARN, "darn", MISC, darn)
Confirmed. __builtin_darn is only enabled for 64bit while __builtin_darn_32 is
enabled for both.
