diff options
| author | David Hildenbrand <david@redhat.com> | 2019-03-21 10:36:26 +0100 |
|---|---|---|
| committer | David Hildenbrand <david@redhat.com> | 2019-05-17 10:54:13 +0200 |
| commit | 449a8ac250612d4ce692df584ab105ad098b96af (patch) | |
| tree | c6356ee73da04e075e9a115f4061ebd5bd2788d9 /target/s390x/vec_int_helper.c | |
| parent | 28863f1dbda5ef1e7e1e4b75857ac0fdb52424f5 (diff) | |
s390x/tcg: Implement VECTOR COUNT TRAILING ZEROS
Implement it similar to VECTOR COUNT LEADING ZEROS.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Diffstat (limited to 'target/s390x/vec_int_helper.c')
| -rw-r--r-- | target/s390x/vec_int_helper.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/target/s390x/vec_int_helper.c b/target/s390x/vec_int_helper.c index 016512547c..d1b1f28509 100644 --- a/target/s390x/vec_int_helper.c +++ b/target/s390x/vec_int_helper.c @@ -60,3 +60,17 @@ void HELPER(gvec_vclz##BITS)(void *v1, const void *v2, uint32_t desc) \ } DEF_VCLZ(8) DEF_VCLZ(16) + +#define DEF_VCTZ(BITS) \ +void HELPER(gvec_vctz##BITS)(void *v1, const void *v2, uint32_t desc) \ +{ \ + int i; \ + \ + for (i = 0; i < (128 / BITS); i++) { \ + const uint##BITS##_t a = s390_vec_read_element##BITS(v2, i); \ + \ + s390_vec_write_element##BITS(v1, i, a ? ctz32(a) : BITS); \ + } \ +} +DEF_VCTZ(8) +DEF_VCTZ(16) |