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Merge pull request #2467 from AGSaidi/rpcc 

Make rpcc() on arm64 get closer to what x86 returns
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Martin Kroeker 2020-02-29 22:43:02 +01:00 committed by GitHub
parent 1aa5907a2c 19f3a4091c
commit a731a9bbb9
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1 changed files with 3 additions and 1 deletions
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4
common_arm64.h
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@ -81,10 +81,12 @@ static void __inline blas_lock(volatile BLASULONG *address){
#if !defined(OS_DARWIN) && !defined (OS_ANDROID)
static __inline BLASULONG rpcc(void){
BLASULONG ret = 0;
blasint shift;
__asm__ __volatile__ ("isb; mrs %0,cntvct_el0":"=r"(ret));
__asm__ __volatile__ ("mrs %0,cntfrq_el0; clz %w0, %w0":"=&r"(shift));
return ret;
return ret << shift;
}
#define RPCC_DEFINED