arm/translate-a64: add FP16 FRECPE

Now we have added f16 during the re-factoring we can simply call the
helper.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180227143852.11175-24-alex.bennee@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

target/arm/translate-a64.c

@@ -11311,6 +11311,8 @@ static void disas_simd_two_reg_misc_fp16(DisasContext *s, uint32_t insn)
     case 0x6d: /* FCMLE (zero) */
         handle_2misc_fcmp_zero(s, fpop, is_scalar, 0, is_q, MO_16, rn, rd);
         return;
+    case 0x3d: /* FRECPE */
+        break;
     case 0x18: /* FRINTN */
         need_rmode = true;
         only_in_vector = true;
@@ -11431,6 +11433,9 @@ static void disas_simd_two_reg_misc_fp16(DisasContext *s, uint32_t insn)
         case 0x3b: /* FCVTZS */
             gen_helper_advsimd_f16tosinth(tcg_res, tcg_op, tcg_fpstatus);
             break;
+        case 0x3d: /* FRECPE */
+            gen_helper_recpe_f16(tcg_res, tcg_op, tcg_fpstatus);
+            break;
         case 0x5a: /* FCVTNU */
         case 0x5b: /* FCVTMU */
         case 0x5c: /* FCVTAU */
@@ -11466,6 +11471,9 @@ static void disas_simd_two_reg_misc_fp16(DisasContext *s, uint32_t insn)
             case 0x3b: /* FCVTZS */
                 gen_helper_advsimd_f16tosinth(tcg_res, tcg_op, tcg_fpstatus);
                 break;
+            case 0x3d: /* FRECPE */
+                gen_helper_recpe_f16(tcg_res, tcg_op, tcg_fpstatus);
+                break;
             case 0x5a: /* FCVTNU */
             case 0x5b: /* FCVTMU */
             case 0x5c: /* FCVTAU */