diff mbox series

[v2,068/101] target/arm: Implement SME2 SEL

Message ID 20250621235037.74091-69-richard.henderson@linaro.org
State New
Headers show
Series target/arm: Implement FEAT_SME2p1 | expand

Commit Message

Richard Henderson June 21, 2025, 11:50 p.m. UTC 
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/tcg/translate-sme.c | 25 +++++++++++++++++++++++++
 target/arm/tcg/sme.decode      |  9 +++++++++
 2 files changed, 34 insertions(+)
diff mbox series

Patch

diff --git a/target/arm/tcg/translate-sme.c b/target/arm/tcg/translate-sme.c
index f4af2dd98d..186d46ecbf 100644
--- a/target/arm/tcg/translate-sme.c
+++ b/target/arm/tcg/translate-sme.c
@@ -1541,3 +1541,28 @@  static gen_helper_gvec_3 * const uclamp_fns[] = {
     gen_helper_sme2_uclamp_d,
 };
 TRANS(UCLAMP, do_clamp, a, uclamp_fns)
+
+static bool trans_SEL(DisasContext *s, arg_SEL *a)
+{
+    static gen_helper_gvec_4 * const fns[4] = {
+        gen_helper_sve_sel_zpzz_b, gen_helper_sve_sel_zpzz_h,
+        gen_helper_sve_sel_zpzz_s, gen_helper_sve_sel_zpzz_d
+    };
+
+    if (!dc_isar_feature(aa64_sme2, s)) {
+        return false;
+    }
+    if (sme_sm_enabled_check(s)) {
+        int svl = streaming_vec_reg_size(s);
+        gen_helper_gvec_4 *f = fns[a->esz];
+
+        for (int i = 0; i < a->n; ++i) {
+            tcg_gen_gvec_4_ool(vec_full_reg_offset(s, a->zd + i),
+                               vec_full_reg_offset(s, a->zn + i),
+                               vec_full_reg_offset(s, a->zm + i),
+                               pred_full_reg_offset(s, a->pg),
+                               svl, svl, 0, f);
+        }
+    }
+    return true;
+}
diff --git a/target/arm/tcg/sme.decode b/target/arm/tcg/sme.decode
index ca73a58a68..80fe02190c 100644
--- a/target/arm/tcg/sme.decode
+++ b/target/arm/tcg/sme.decode
@@ -876,3 +876,12 @@  UCLAMP          11000001 esz:2 1 zm:5 110001 zn:5 .... 1    \
                 &zzz_en zd=%zd_ax2 n=2
 UCLAMP          11000001 esz:2 1 zm:5 110011 zn:5 ...0 1    \
                 &zzz_en zd=%zd_ax4 n=4
+
+### SME2 Multi-vector SVE Select
+
+%sel_pg         10:3 !function=plus_8
+
+SEL             11000001 esz:2 1 ....0 100 ... ....0 ....0  \
+                n=2 zd=%zd_ax2 zn=%zn_ax2 zm=%zm_ax2 pg=%sel_pg
+SEL             11000001 esz:2 1 ...01 100 ... ...00 ...00  \
+                n=4 zd=%zd_ax4 zn=%zn_ax4 zm=%zm_ax4 pg=%sel_pg