target-sh4: use deposit in swap.b instruction

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

diff --git a/target-sh4/translate.c b/target-sh4/translate.c
index be0cb321cf04abbc6d3e2a86574132d672e65888..50043cf5b59643e4e822d20beb925ccdd90aed37 100644 (file)
--- a/target-sh4/translate.c
+++ b/target-sh4/translate.c
@@ -612,15 +612,11 @@ static void _decode_opc(DisasContext * ctx)
        return;
     case 0x6008:               /* swap.b Rm,Rn */
        {
-           TCGv high, low;
-           high = tcg_temp_new();
-           tcg_gen_andi_i32(high, REG(B7_4), 0xffff0000);
-           low = tcg_temp_new();
+            TCGv low = tcg_temp_new();;
            tcg_gen_ext16u_i32(low, REG(B7_4));
            tcg_gen_bswap16_i32(low, low);
-           tcg_gen_or_i32(REG(B11_8), high, low);
+            tcg_gen_deposit_i32(REG(B11_8), REG(B7_4), low, 0, 16);
            tcg_temp_free(low);
-           tcg_temp_free(high);
        }
        return;
     case 0x6009:               /* swap.w Rm,Rn */