diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/configure b/configure index 4dd67a5cc6e..30d949c3c46 100755 --- a/configure +++ b/configure @@ -17517,6 +17517,77 @@ $as_echo "#define USE_AVX512_POPCNT_WITH_RUNTIME_CHECK 1" >>confdefs.h fi fi +# Check for SVE popcount intrinsics +# +if test x"$host_cpu" = x"aarch64"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: checking for svcnt_x" >&5 +$as_echo_n "checking for svcnt_x... " >&6; } +if ${pgac_cv_sve_popcnt_intrinsics+:} false; then : + $as_echo_n "(cached) " >&6 +else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +#include <arm_sve.h> + + char buf[128]; + + #if defined(__has_attribute) && __has_attribute (target) + __attribute__((target("arch=armv8-a+sve"))) + #endif + static int popcount_test(void) + { + svbool_t pred = svptrue_b64(); + svuint8_t vec8; + svuint64_t accum1 = svdup_u64(0), + accum2 = svdup_u64(0), + vec64; + char *p = buf; + uint64_t popcnt, + mask = 0x5555555555555555; + + vec64 = svand_n_u64_x(pred, svld1_u64(pred, (const uint64_t *) p), mask); + accum1 = svadd_u64_x(pred, accum1, svcnt_u64_x(pred, vec64)); + p += svcntb(); + + vec64 = svand_n_u64_x(pred, svld1_u64(pred, (const uint64_t *) p), mask); + accum2 = svadd_u64_x(pred, accum2, svcnt_u64_x(pred, vec64)); + p += svcntb(); + + popcnt = svaddv_u64(pred, svadd_u64_x(pred, accum1, accum2)); + + pred = svwhilelt_b8_s32(0, sizeof(buf)); + vec8 = svand_n_u8_x(pred, svld1_u8(pred, (const uint8_t *) p), 0x55); + return (int) (popcnt + svaddv_u8(pred, svcnt_u8_x(pred, vec8))); + } +int +main () +{ +return popcount_test(); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + pgac_cv_sve_popcnt_intrinsics=yes +else + pgac_cv_sve_popcnt_intrinsics=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $pgac_cv_sve_popcnt_intrinsics" >&5 +$as_echo "$pgac_cv_sve_popcnt_intrinsics" >&6; } +if test x"$pgac_cv_sve_popcnt_intrinsics" = x"yes"; then + pgac_sve_popcnt_intrinsics=yes +fi + + if test x"$pgac_sve_popcnt_intrinsics" = x"yes"; then + +$as_echo "#define USE_SVE_POPCNT_WITH_RUNTIME_CHECK 1" >>confdefs.h + + fi +fi + # Check for Intel SSE 4.2 intrinsics to do CRC calculations. # { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _mm_crc32_u8 and _mm_crc32_u32" >&5 |