target/riscv: rvv: Add mask agnostic for vx instructions

Signed-off-by: eop Chen <eop.chen@sifive.com>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Weiwei Li <liweiwei@iscas.ac.cn>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <165570784143.17634.35095816584573691-3@git.sr.ht>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

target/riscv/insn_trans/trans_rvv.c.inc

@@ -1301,6 +1301,7 @@ static bool opivx_trans(uint32_t vd, uint32_t rs1, uint32_t vs2, uint32_t vm,
     data = FIELD_DP32(data, VDATA, LMUL, s->lmul);
     data = FIELD_DP32(data, VDATA, VTA, s->vta);
     data = FIELD_DP32(data, VDATA, VTA_ALL_1S, s->cfg_vta_all_1s);
+    data = FIELD_DP32(data, VDATA, VMA, s->vma);
     desc = tcg_constant_i32(simd_desc(s->cfg_ptr->vlen / 8,
                                       s->cfg_ptr->vlen / 8, data));
 
@@ -1468,6 +1469,7 @@ static bool opivi_trans(uint32_t vd, uint32_t imm, uint32_t vs2, uint32_t vm,
     data = FIELD_DP32(data, VDATA, LMUL, s->lmul);
     data = FIELD_DP32(data, VDATA, VTA, s->vta);
     data = FIELD_DP32(data, VDATA, VTA_ALL_1S, s->cfg_vta_all_1s);
+    data = FIELD_DP32(data, VDATA, VMA, s->vma);
     desc = tcg_constant_i32(simd_desc(s->cfg_ptr->vlen / 8,
                                       s->cfg_ptr->vlen / 8, data));
 

target/riscv/vector_helper.c

@@ -899,10 +899,13 @@ static void do_vext_vx(void *vd, void *v0, target_long s1, void *vs2,
     uint32_t vl = env->vl;
     uint32_t total_elems = vext_get_total_elems(env, desc, esz);
     uint32_t vta = vext_vta(desc);
+    uint32_t vma = vext_vma(desc);
     uint32_t i;
 
     for (i = env->vstart; i < vl; i++) {
         if (!vm && !vext_elem_mask(v0, i)) {
+            /* set masked-off elements to 1s */
+            vext_set_elems_1s(vd, vma, i * esz, (i + 1) * esz);
             continue;
         }
         fn(vd, s1, vs2, i);