target/arm: Implement integer matrix multiply accumulate

This is {S,U,US}MMLA for both AArch64 AdvSIMD and SVE,
and V{S,U,US}MMLA.S8 for AArch32 NEON.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210525010358.152808-91-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c
index 428ae018a3..9574efe957 100644
--- a/target/arm/translate-sve.c
+++ b/target/arm/translate-sve.c
@@ -8610,3 +8610,30 @@ static bool trans_FMLSLT_zzxw(DisasContext *s, arg_rrxr_esz *a)
 {
     return do_FMLAL_zzxw(s, a, true, true);
 }
+
+static bool do_i8mm_zzzz_ool(DisasContext *s, arg_rrrr_esz *a,
+                             gen_helper_gvec_4 *fn, int data)
+{
+    if (!dc_isar_feature(aa64_sve_i8mm, s)) {
+        return false;
+    }
+    if (sve_access_check(s)) {
+        gen_gvec_ool_zzzz(s, fn, a->rd, a->rn, a->rm, a->ra, data);
+    }
+    return true;
+}
+
+static bool trans_SMMLA(DisasContext *s, arg_rrrr_esz *a)
+{
+    return do_i8mm_zzzz_ool(s, a, gen_helper_gvec_smmla_b, 0);
+}
+
+static bool trans_USMMLA(DisasContext *s, arg_rrrr_esz *a)
+{
+    return do_i8mm_zzzz_ool(s, a, gen_helper_gvec_usmmla_b, 0);
+}
+
+static bool trans_UMMLA(DisasContext *s, arg_rrrr_esz *a)
+{
+    return do_i8mm_zzzz_ool(s, a, gen_helper_gvec_ummla_b, 0);
+}