tcg/s390x: Implement TCG_TARGET_HAS_cmpsel_vec

This is via expansion; don't actually set TCG_TARGET_HAS_cmpsel_vec.

Signed-off-by: Richard Henderson <[email protected]>

Author: rth7680

tcg/s390x/tcg-target.c.inc

@@ -2869,6 +2869,7 @@ int tcg_can_emit_vec_op(TCGOpcode opc, TCGType type, unsigned vece)
     case INDEX_op_xor_vec:
         return 1;
     case INDEX_op_cmp_vec:
+    case INDEX_op_cmpsel_vec:
     case INDEX_op_rotrv_vec:
         return -1;
     case INDEX_op_mul_vec:
@@ -2931,6 +2932,21 @@ static void expand_vec_cmp(TCGType type, unsigned vece, TCGv_vec v0,
     }
 }
 
+static void expand_vec_cmpsel(TCGType type, unsigned vece, TCGv_vec v0,
+                              TCGv_vec c1, TCGv_vec c2,
+                              TCGv_vec v3, TCGv_vec v4, TCGCond cond)
+{
+    TCGv_vec t = tcg_temp_new_vec(type);
+
+    if (expand_vec_cmp_noinv(type, vece, t, c1, c2, cond)) {
+        /* Invert the sense of the compare by swapping arguments.  */
+        tcg_gen_bitsel_vec(vece, v0, t, v4, v3);
+    } else {
+        tcg_gen_bitsel_vec(vece, v0, t, v3, v4);
+    }
+    tcg_temp_free_vec(t);
+}
+
 static void expand_vec_sat(TCGType type, unsigned vece, TCGv_vec v0,
                            TCGv_vec v1, TCGv_vec v2, TCGOpcode add_sub_opc)
 {
@@ -2972,7 +2988,7 @@ void tcg_expand_vec_op(TCGOpcode opc, TCGType type, unsigned vece,
                        TCGArg a0, ...)
 {
     va_list va;
-    TCGv_vec v0, v1, v2, t0;
+    TCGv_vec v0, v1, v2, v3, v4, t0;
 
     va_start(va, a0);
     v0 = temp_tcgv_vec(arg_temp(a0));
@@ -2984,6 +3000,12 @@ void tcg_expand_vec_op(TCGOpcode opc, TCGType type, unsigned vece,
         expand_vec_cmp(type, vece, v0, v1, v2, va_arg(va, TCGArg));
         break;
 
+    case INDEX_op_cmpsel_vec:
+        v3 = temp_tcgv_vec(arg_temp(va_arg(va, TCGArg)));
+        v4 = temp_tcgv_vec(arg_temp(va_arg(va, TCGArg)));
+        expand_vec_cmpsel(type, vece, v0, v1, v2, v3, v4, va_arg(va, TCGArg));
+        break;
+
     case INDEX_op_rotrv_vec:
         t0 = tcg_temp_new_vec(type);
         tcg_gen_neg_vec(vece, t0, v2);