diff options
| author | aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-03-13 09:35:03 +0000 |
|---|---|---|
| committer | aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-03-13 09:35:03 +0000 |
| commit | dfa1a3f1c40b120e863cd56605ddbec276569bcd (patch) | |
| tree | 931e4e513e60d5688c8ba53b962ddd4d0485e8d2 /tcg | |
| parent | 84aafb06ff6e59aa48c6bc1f86ab5f7eb584f40f (diff) | |
tcg: optimize tcg_gen_bswap16_i32
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6831 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/tcg-op.h | 13 |
1 files 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 } |