[PULL 17/29] target/arm: Convert FCADD to decodetree

[Peter Maydell]

From: Richard Henderson <richard.henderson@linaro.org>

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240625183536.1672454-12-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/tcg/a64.decode      |  3 +++
 target/arm/tcg/translate-a64.c | 33 ++++++++++-----------------------
 2 files changed, 13 insertions(+), 23 deletions(-)

diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode
index b2c7e36969e..f330919851b 100644
--- a/target/arm/tcg/a64.decode
+++ b/target/arm/tcg/a64.decode
@@ -957,6 +957,9 @@ SMMLA           0100 1110 100 ..... 10100 1 ..... ..... 
@rrr_q1e0
 UMMLA           0110 1110 100 ..... 10100 1 ..... ..... @rrr_q1e0
 USMMLA          0100 1110 100 ..... 10101 1 ..... ..... @rrr_q1e0
 
+FCADD_90        0.10 1110 ..0 ..... 11100 1 ..... ..... @qrrr_e
+FCADD_270       0.10 1110 ..0 ..... 11110 1 ..... ..... @qrrr_e
+
 ### Advanced SIMD scalar x indexed element
 
 FMUL_si         0101 1111 00 .. .... 1001 . 0 ..... .....   @rrx_h
diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c
index 57cdde008ef..a1b338263ff 100644
--- a/target/arm/tcg/translate-a64.c
+++ b/target/arm/tcg/translate-a64.c
@@ -5623,6 +5623,14 @@ static bool trans_BFMLAL_v(DisasContext *s, arg_qrrr_e 
*a)
     return true;
 }
 
+static gen_helper_gvec_3_ptr * const f_vector_fcadd[3] = {
+    gen_helper_gvec_fcaddh,
+    gen_helper_gvec_fcadds,
+    gen_helper_gvec_fcaddd,
+};
+TRANS_FEAT(FCADD_90, aa64_fcma, do_fp3_vector, a, 0, f_vector_fcadd)
+TRANS_FEAT(FCADD_270, aa64_fcma, do_fp3_vector, a, 1, f_vector_fcadd)
+
 /*
  * Advanced SIMD scalar/vector x indexed element
  */
@@ -10957,8 +10965,6 @@ static void 
disas_simd_three_reg_same_extra(DisasContext *s, uint32_t insn)
     case 0x19: /* FCMLA, #90 */
     case 0x1a: /* FCMLA, #180 */
     case 0x1b: /* FCMLA, #270 */
-    case 0x1c: /* FCADD, #90 */
-    case 0x1e: /* FCADD, #270 */
         if (size == 0
             || (size == 1 && !dc_isar_feature(aa64_fp16, s))
             || (size == 3 && !is_q)) {
@@ -10976,7 +10982,9 @@ static void 
disas_simd_three_reg_same_extra(DisasContext *s, uint32_t insn)
     case 0x11: /* SQRDMLSH (vector) */
     case 0x12: /* UDOT (vector) */
     case 0x14: /* UMMLA */
+    case 0x1c: /* FCADD, #90 */
     case 0x1d: /* BFMMLA */
+    case 0x1e: /* FCADD, #270 */
     case 0x1f: /* BFDOT / BFMLAL */
         unallocated_encoding(s);
         return;
@@ -11013,27 +11021,6 @@ static void 
disas_simd_three_reg_same_extra(DisasContext *s, uint32_t insn)
         }
         return;
 
-    case 0xc: /* FCADD, #90 */
-    case 0xe: /* FCADD, #270 */
-        rot = extract32(opcode, 1, 1);
-        switch (size) {
-        case 1:
-            gen_gvec_op3_fpst(s, is_q, rd, rn, rm, size == 1, rot,
-                              gen_helper_gvec_fcaddh);
-            break;
-        case 2:
-            gen_gvec_op3_fpst(s, is_q, rd, rn, rm, size == 1, rot,
-                              gen_helper_gvec_fcadds);
-            break;
-        case 3:
-            gen_gvec_op3_fpst(s, is_q, rd, rn, rm, size == 1, rot,
-                              gen_helper_gvec_fcaddd);
-            break;
-        default:
-            g_assert_not_reached();
-        }
-        return;
-
     default:
         g_assert_not_reached();
     }
-- 
2.34.1