target/arm: Use TRANS_FEAT for USDOT_zzzz

This is the last direct user of tcg_gen_gvec_4_ool.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220527181907.189259-19-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

target/arm/translate-sve.c

@@ -8044,21 +8044,8 @@ static gen_helper_gvec_4 * const sqrdcmlah_fns[] = {
 TRANS_FEAT(SQRDCMLAH_zzzz, aa64_sve2, gen_gvec_ool_zzzz,
            sqrdcmlah_fns[a->esz], a->rd, a->rn, a->rm, a->ra, a->rot)
 
-static bool trans_USDOT_zzzz(DisasContext *s, arg_USDOT_zzzz *a)
-{
-    if (a->esz != 2 || !dc_isar_feature(aa64_sve_i8mm, s)) {
-        return false;
-    }
-    if (sve_access_check(s)) {
-        unsigned vsz = vec_full_reg_size(s);
-        tcg_gen_gvec_4_ool(vec_full_reg_offset(s, a->rd),
-                           vec_full_reg_offset(s, a->rn),
-                           vec_full_reg_offset(s, a->rm),
-                           vec_full_reg_offset(s, a->ra),
-                           vsz, vsz, 0, gen_helper_gvec_usdot_b);
-    }
-    return true;
-}
+TRANS_FEAT(USDOT_zzzz, aa64_sve_i8mm, gen_gvec_ool_arg_zzzz,
+           a->esz == 2 ? gen_helper_gvec_usdot_b : NULL, a, 0)
 
 TRANS_FEAT(AESMC, aa64_sve2_aes, gen_gvec_ool_zz,
            gen_helper_crypto_aesmc, a->rd, a->rd, a->decrypt)