commit 6c9bccf52fc55b7d47b4a0904ee804bc2a6994fd
author Richard Henderson <richard.henderson@linaro.org> Tue May 28 13:30:27 2024 -0700
committer Peter Maydell <peter.maydell@linaro.org> Thu May 30 15:24:40 2024 +0100
tree 218a0d3c4d490ba950d2ae868d811e7f10f1927d
parent 4f92fd736d4c4899e7a27b983d54b62f894eca07

target/arm: Convert ADD, SUB (vector) to decodetree

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240528203044.612851-17-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

target/arm/tcg/a64.decode

diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode
index 96ce35a..44383b4 100644
--- a/target/arm/tcg/a64.decode
+++ b/target/arm/tcg/a64.decode
@@ -765,6 +765,9 @@
 SQRSHL_s        0101 1110 ..1 ..... 01011 1 ..... ..... @rrr_e
 UQRSHL_s        0111 1110 ..1 ..... 01011 1 ..... ..... @rrr_e
 
+ADD_s           0101 1110 111 ..... 10000 1 ..... ..... @rrr_d
+SUB_s           0111 1110 111 ..... 10000 1 ..... ..... @rrr_d
+
 ### Advanced SIMD scalar pairwise
 
 FADDP_s         0101 1110 0011 0000 1101 10 ..... ..... @rr_h
@@ -895,6 +898,9 @@
 SQRSHL_v        0.00 1110 ..1 ..... 01011 1 ..... ..... @qrrr_e
 UQRSHL_v        0.10 1110 ..1 ..... 01011 1 ..... ..... @qrrr_e
 
+ADD_v           0.00 1110 ..1 ..... 10000 1 ..... ..... @qrrr_e
+SUB_v           0.10 1110 ..1 ..... 10000 1 ..... ..... @qrrr_e
+
 ### Advanced SIMD scalar x indexed element
 
 FMUL_si         0101 1111 00 .. .... 1001 . 0 ..... .....   @rrx_h

target/arm/tcg/translate-a64.c

diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c
index 2424c6d..77a6492 100644
--- a/target/arm/tcg/translate-a64.c
+++ b/target/arm/tcg/translate-a64.c
@@ -5118,6 +5118,8 @@
 TRANS(USHL_s, do_int3_scalar_d, a, gen_ushl_i64)
 TRANS(SRSHL_s, do_int3_scalar_d, a, gen_helper_neon_rshl_s64)
 TRANS(URSHL_s, do_int3_scalar_d, a, gen_helper_neon_rshl_u64)
+TRANS(ADD_s, do_int3_scalar_d, a, tcg_gen_add_i64)
+TRANS(SUB_s, do_int3_scalar_d, a, tcg_gen_sub_i64)
 
 typedef struct ENVScalar2 {
     NeonGenTwoOpEnvFn *gen_bhs[3];
@@ -5432,6 +5434,8 @@
 TRANS(SQRSHL_v, do_gvec_fn3, a, gen_neon_sqrshl)
 TRANS(UQRSHL_v, do_gvec_fn3, a, gen_neon_uqrshl)
 
+TRANS(ADD_v, do_gvec_fn3, a, tcg_gen_gvec_add)
+TRANS(SUB_v, do_gvec_fn3, a, tcg_gen_gvec_sub)
 
 /*
  * Advanced SIMD scalar/vector x indexed element
@@ -9444,13 +9448,6 @@
         }
         gen_cmtst_i64(tcg_rd, tcg_rn, tcg_rm);
         break;
-    case 0x10: /* ADD, SUB */
-        if (u) {
-            tcg_gen_sub_i64(tcg_rd, tcg_rn, tcg_rm);
-        } else {
-            tcg_gen_add_i64(tcg_rd, tcg_rn, tcg_rm);
-        }
-        break;
     default:
     case 0x1: /* SQADD / UQADD */
     case 0x5: /* SQSUB / UQSUB */
@@ -9458,6 +9455,7 @@
     case 0x9: /* SQSHL, UQSHL */
     case 0xa: /* SRSHL, URSHL */
     case 0xb: /* SQRSHL, UQRSHL */
+    case 0x10: /* ADD, SUB */
         g_assert_not_reached();
     }
 }
@@ -9482,7 +9480,6 @@
     case 0x6: /* CMGT, CMHI */
     case 0x7: /* CMGE, CMHS */
     case 0x11: /* CMTST, CMEQ */
-    case 0x10: /* ADD, SUB (vector) */
         if (size != 3) {
             unallocated_encoding(s);
             return;
@@ -9501,6 +9498,7 @@
     case 0x9: /* SQSHL, UQSHL */
     case 0xa: /* SRSHL, URSHL */
     case 0xb: /* SQRSHL, UQRSHL */
+    case 0x10: /* ADD, SUB (vector) */
         unallocated_encoding(s);
         return;
     }
@@ -10962,6 +10960,7 @@
     case 0x09: /* SQSHL, UQSHL */
     case 0x0a: /* SRSHL, URSHL */
     case 0x0b: /* SQRSHL, UQRSHL */
+    case 0x10: /* ADD, SUB */
         unallocated_encoding(s);
         return;
     }
@@ -10999,13 +10998,6 @@
             gen_gvec_fn3(s, is_q, rd, rn, rm, gen_gvec_saba, size);
         }
         return;
-    case 0x10: /* ADD, SUB */
-        if (u) {
-            gen_gvec_fn3(s, is_q, rd, rn, rm, tcg_gen_gvec_sub, size);
-        } else {
-            gen_gvec_fn3(s, is_q, rd, rn, rm, tcg_gen_gvec_add, size);
-        }
-        return;
     case 0x13: /* MUL, PMUL */
         if (!u) { /* MUL */
             gen_gvec_fn3(s, is_q, rd, rn, rm, tcg_gen_gvec_mul, size);