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-neon.c b/target/arm/translate-neon.c
index b6ca29c..9e990b4 100644
--- a/target/arm/translate-neon.c
+++ b/target/arm/translate-neon.c
@@ -4036,3 +4036,30 @@ static bool trans_VTRN(DisasContext *s, arg_2misc *a)
     tcg_temp_free_i32(tmp2);
     return true;
 }
+
+static bool trans_VSMMLA(DisasContext *s, arg_VSMMLA *a)
+{
+    if (!dc_isar_feature(aa32_i8mm, s)) {
+        return false;
+    }
+    return do_neon_ddda(s, 7, a->vd, a->vn, a->vm, 0,
+                        gen_helper_gvec_smmla_b);
+}
+
+static bool trans_VUMMLA(DisasContext *s, arg_VUMMLA *a)
+{
+    if (!dc_isar_feature(aa32_i8mm, s)) {
+        return false;
+    }
+    return do_neon_ddda(s, 7, a->vd, a->vn, a->vm, 0,
+                        gen_helper_gvec_ummla_b);
+}
+
+static bool trans_VUSMMLA(DisasContext *s, arg_VUSMMLA *a)
+{
+    if (!dc_isar_feature(aa32_i8mm, s)) {
+        return false;
+    }
+    return do_neon_ddda(s, 7, a->vd, a->vn, a->vm, 0,
+                        gen_helper_gvec_usmmla_b);
+}