From dfa1a3f1c40b120e863cd56605ddbec276569bcd Mon Sep 17 00:00:00 2001 From: aurel32 Date: Fri, 13 Mar 2009 09:35:03 +0000 Subject: [PATCH] tcg: optimize tcg_gen_bswap16_i32 Signed-off-by: Aurelien Jarno git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6831 c046a42c-6fe2-441c-8c8c-71466251a162 --- tcg/tcg-op.h | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h index fa0f01cdd3..c413b28bdc 100644 --- a/tcg/tcg-op.h +++ b/tcg/tcg-op.h @@ -1207,16 +1207,13 @@ static inline void tcg_gen_bswap16_i32(TCGv_i32 ret, TCGv_i32 arg) #ifdef TCG_TARGET_HAS_bswap16_i32 tcg_gen_op2_i32(INDEX_op_bswap16_i32, ret, arg); #else - TCGv_i32 t0, t1; - t0 = tcg_temp_new_i32(); - t1 = tcg_temp_new_i32(); + TCGv_i32 t0 = tcg_temp_new_i32(); - tcg_gen_shri_i32(t0, arg, 8); - tcg_gen_andi_i32(t1, arg, 0x000000ff); - tcg_gen_shli_i32(t1, t1, 8); - tcg_gen_or_i32(ret, t0, t1); + tcg_gen_ext8u_i32(t0, arg); + tcg_gen_shli_i32(t0, t0, 8); + tcg_gen_shri_i32(ret, arg, 8); + tcg_gen_or_i32(ret, ret, t0); tcg_temp_free_i32(t0); - tcg_temp_free_i32(t1); #endif }