target/arm: Update CNTP for PREDDESC

Since b64ee45, all predicate operations should be
using these field macros for predicates.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210309155305.11301-7-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

target/arm/sve_helper.c

@@ -2836,12 +2836,12 @@ uint32_t HELPER(sve_brkns)(void *vd, void *vn, void *vg, uint32_t pred_desc)
 
 uint64_t HELPER(sve_cntp)(void *vn, void *vg, uint32_t pred_desc)
 {
-    intptr_t oprsz = extract32(pred_desc, 0, SIMD_OPRSZ_BITS) + 2;
-    intptr_t esz = extract32(pred_desc, SIMD_DATA_SHIFT, 2);
+    intptr_t words = DIV_ROUND_UP(FIELD_EX32(pred_desc, PREDDESC, OPRSZ), 8);
+    intptr_t esz = FIELD_EX32(pred_desc, PREDDESC, ESZ);
     uint64_t *n = vn, *g = vg, sum = 0, mask = pred_esz_masks[esz];
     intptr_t i;
 
-    for (i = 0; i < DIV_ROUND_UP(oprsz, 8); ++i) {
+    for (i = 0; i < words; ++i) {
         uint64_t t = n[i] & g[i] & mask;
         sum += ctpop64(t);
     }

target/arm/translate-sve.c

@@ -2967,11 +2967,11 @@ static void do_cntp(DisasContext *s, TCGv_i64 val, int esz, int pn, int pg)
     } else {
         TCGv_ptr t_pn = tcg_temp_new_ptr();
         TCGv_ptr t_pg = tcg_temp_new_ptr();
-        unsigned desc;
+        unsigned desc = 0;
         TCGv_i32 t_desc;
 
-        desc = psz - 2;
-        desc = deposit32(desc, SIMD_DATA_SHIFT, 2, esz);
+        desc = FIELD_DP32(desc, PREDDESC, OPRSZ, psz);
+        desc = FIELD_DP32(desc, PREDDESC, ESZ, esz);
 
         tcg_gen_addi_ptr(t_pn, cpu_env, pred_full_reg_offset(s, pn));
         tcg_gen_addi_ptr(t_pg, cpu_env, pred_full_reg_offset(s, pg));