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better dispatching

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This commit is contained in:
Martin Reinecke 2018-11-06 15:27:28 +01:00
parent 1c5c9eb579
commit ff1ff8c25e
1 changed files with 14 additions and 4 deletions
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18
libsharp/sharp_core.c
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@ -34,6 +34,18 @@
#undef ARCH
#if (!defined(__AVX__)) && defined(__GNUC__) && defined (__x86_64__) && (__GNUC__>=5)
static int have_avx(void)
{
static int res=-1;
if (res<0)
{
__builtin_cpu_init();
res = __builtin_cpu_supports("avx");
}
return res;
}
void inner_loop_avx (sharp_job *job, const int *ispair,const double *cth,
const double *sth, int llim, int ulim, sharp_Ylmgen_C *gen, int mi,
const int *mlim);
@ -44,8 +56,7 @@ void inner_loop (sharp_job *job, const int *ispair,const double *cth,
const int *mlim)
{
#if (!defined(__AVX__)) && defined(__GNUC__) && defined (__x86_64__) && (__GNUC__>=5)
__builtin_cpu_init();
if (__builtin_cpu_supports("avx"))
if (have_avx())
inner_loop_avx (job, ispair, cth, sth, llim, ulim, gen, mi, mlim);
else
#endif
@ -55,8 +66,7 @@ void inner_loop (sharp_job *job, const int *ispair,const double *cth,
int sharp_veclen(void)
{
#if (!defined(__AVX__)) && defined(__GNUC__) && defined (__x86_64__) && (__GNUC__>=5)
__builtin_cpu_init();
if (__builtin_cpu_supports("avx"))
if (have_avx())
return 4;
else
#endif