target/arm: Convert SRSHL, URSHL to decodetree

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240528203044.612851-12-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode
index ea897d6732c03f52d3b83ad3424f7528499da147..9e02776036705a7200e8533be6c28c5873737d78 100644 (file)
--- a/target/arm/tcg/a64.decode
+++ b/target/arm/tcg/a64.decode
@@ -758,6 +758,8 @@ USQADD_s        0111 1110 ..1 00000 00111 0 ..... ..... @r2r_e
 
 SSHL_s          0101 1110 111 ..... 01000 1 ..... ..... @rrr_d
 USHL_s          0111 1110 111 ..... 01000 1 ..... ..... @rrr_d
+SRSHL_s         0101 1110 111 ..... 01010 1 ..... ..... @rrr_d
+URSHL_s         0111 1110 111 ..... 01010 1 ..... ..... @rrr_d
 
 ### Advanced SIMD scalar pairwise
 
@@ -882,6 +884,8 @@ USQADD_v        0.10 1110 ..1 00000 00111 0 ..... ..... @qr2r_e
 
 SSHL_v          0.00 1110 ..1 ..... 01000 1 ..... ..... @qrrr_e
 USHL_v          0.10 1110 ..1 ..... 01000 1 ..... ..... @qrrr_e
+SRSHL_v         0.00 1110 ..1 ..... 01010 1 ..... ..... @qrrr_e
+URSHL_v         0.10 1110 ..1 ..... 01010 1 ..... ..... @qrrr_e
 
 ### Advanced SIMD scalar x indexed element
 

diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c
index 7e981f8d01121109c396640d211d127a2845456a..c751da78ef0fba8dac571083821c81598f6bd2b5 100644 (file)
--- a/target/arm/tcg/translate-a64.c
+++ b/target/arm/tcg/translate-a64.c
@@ -5116,6 +5116,8 @@ static bool do_int3_scalar_d(DisasContext *s, arg_rrr_e *a,
 
 TRANS(SSHL_s, do_int3_scalar_d, a, gen_sshl_i64)
 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)
 
 static bool do_fp3_vector(DisasContext *s, arg_qrrr_e *a,
                           gen_helper_gvec_3_ptr * const fns[3])
@@ -5364,6 +5366,8 @@ TRANS(USQADD_v, do_gvec_fn3, a, gen_gvec_usqadd_qc)
 
 TRANS(SSHL_v, do_gvec_fn3, a, gen_gvec_sshl)
 TRANS(USHL_v, do_gvec_fn3, a, gen_gvec_ushl)
+TRANS(SRSHL_v, do_gvec_fn3, a, gen_gvec_srshl)
+TRANS(URSHL_v, do_gvec_fn3, a, gen_gvec_urshl)
 
 
 /*
@@ -9384,13 +9388,6 @@ static void handle_3same_64(DisasContext *s, int opcode, bool u,
             gen_helper_neon_qshl_s64(tcg_rd, tcg_env, tcg_rn, tcg_rm);
         }
         break;
-    case 0xa: /* SRSHL, URSHL */
-        if (u) {
-            gen_helper_neon_rshl_u64(tcg_rd, tcg_rn, tcg_rm);
-        } else {
-            gen_helper_neon_rshl_s64(tcg_rd, tcg_rn, tcg_rm);
-        }
-        break;
     case 0xb: /* SQRSHL, UQRSHL */
         if (u) {
             gen_helper_neon_qrshl_u64(tcg_rd, tcg_env, tcg_rn, tcg_rm);
@@ -9409,6 +9406,7 @@ static void handle_3same_64(DisasContext *s, int opcode, bool u,
     case 0x1: /* SQADD / UQADD */
     case 0x5: /* SQSUB / UQSUB */
     case 0x8: /* SSHL, USHL */
+    case 0xa: /* SRSHL, URSHL */
         g_assert_not_reached();
     }
 }
@@ -9433,7 +9431,6 @@ static void disas_simd_scalar_three_reg_same(DisasContext *s, uint32_t insn)
     case 0x9: /* SQSHL, UQSHL */
     case 0xb: /* SQRSHL, UQRSHL */
         break;
-    case 0xa: /* SRSHL, URSHL */
     case 0x6: /* CMGT, CMHI */
     case 0x7: /* CMGE, CMHS */
     case 0x11: /* CMTST, CMEQ */
@@ -9453,6 +9450,7 @@ static void disas_simd_scalar_three_reg_same(DisasContext *s, uint32_t insn)
     case 0x1: /* SQADD, UQADD */
     case 0x5: /* SQSUB, UQSUB */
     case 0x8: /* SSHL, USHL */
+    case 0xa: /* SRSHL, URSHL */
         unallocated_encoding(s);
         return;
     }
@@ -10929,6 +10927,7 @@ static void disas_simd_3same_int(DisasContext *s, uint32_t insn)
     case 0x01: /* SQADD, UQADD */
     case 0x05: /* SQSUB, UQSUB */
     case 0x08: /* SSHL, USHL */
+    case 0x0a: /* SRSHL, URSHL */
         unallocated_encoding(s);
         return;
     }
@@ -10938,13 +10937,6 @@ static void disas_simd_3same_int(DisasContext *s, uint32_t insn)
     }
 
     switch (opcode) {
-    case 0x0a: /* SRSHL, URSHL */
-        if (u) {
-            gen_gvec_fn3(s, is_q, rd, rn, rm, gen_gvec_urshl, size);
-        } else {
-            gen_gvec_fn3(s, is_q, rd, rn, rm, gen_gvec_srshl, size);
-        }
-        return;
     case 0x0c: /* SMAX, UMAX */
         if (u) {
             gen_gvec_fn3(s, is_q, rd, rn, rm, tcg_gen_gvec_umax, size);