target/arm: Convert Neon VDUP (scalar) to decodetree

Convert the Neon VDUP (scalar) insn to decodetree.  (Note that we
can't call this just "VDUP" as we used that already in vfp.decode for
the "VDUP (general purpose register" insn.)

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

1 files changed, 1 insertions, 24 deletions

diff --git a/target/arm/translate.c b/target/arm/translate.c
index 0c64259..6d18892 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -5574,31 +5574,8 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
                     }
                     break;
                 }
-            } else if ((insn & (1 << 10)) == 0) {
-                /* VTBL, VTBX: handled by decodetree */
-                return 1;
-            } else if ((insn & 0x380) == 0) {
-                /* VDUP */
-                int element;
-                MemOp size;
-
-                if ((insn & (7 << 16)) == 0 || (q && (rd & 1))) {
-                    return 1;
-                }
-                if (insn & (1 << 16)) {
-                    size = MO_8;
-                    element = (insn >> 17) & 7;
-                } else if (insn & (1 << 17)) {
-                    size = MO_16;
-                    element = (insn >> 18) & 3;
-                } else {
-                    size = MO_32;
-                    element = (insn >> 19) & 1;
-                }
-                tcg_gen_gvec_dup_mem(size, neon_reg_offset(rd, 0),
-                                     neon_element_offset(rm, element, size),
-                                     q ? 16 : 8, q ? 16 : 8);
             } else {
+                /* VTBL, VTBX, VDUP: handled by decodetree */
                 return 1;
             }
         }