Remove TCG_BSWAP_IZ and the preceding zero-extension.

Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
 target/sh4/translate.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/target/sh4/translate.c b/target/sh4/translate.c
index 147219759b..f45515952f 100644
--- a/target/sh4/translate.c
+++ b/target/sh4/translate.c
@@ -676,8 +676,7 @@ static void _decode_opc(DisasContext * ctx)
     case 0x6008:               /* swap.b Rm,Rn */
        {
             TCGv low = tcg_temp_new();
-           tcg_gen_ext16u_i32(low, REG(B7_4));
-           tcg_gen_bswap16_i32(low, low, TCG_BSWAP_IZ | TCG_BSWAP_OZ);
+           tcg_gen_bswap16_i32(low, REG(B7_4), 0);
             tcg_gen_deposit_i32(REG(B11_8), REG(B7_4), low, 0, 16);
            tcg_temp_free(low);
        }
-- 
2.25.1


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