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| author |   bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-05-22 13:25:14 +0000 |
|---|---|---|
| committer | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-05-22 13:25:14 +0000 |
| commit | 34151a20ea237dd21dc1e39a0c25d715ed39d989 (patch) | |
| tree | 218cb34225a91d4f3324f69d23a6470ce31becd7 /tcg/tcg-op.h | |
| parent | optimization of shifts by a constant (diff) | |
| download | qemu-kvm-34151a20ea237dd21dc1e39a0c25d715ed39d989.tar.gz qemu-kvm-34151a20ea237dd21dc1e39a0c25d715ed39d989.tar.bz2 qemu-kvm-34151a20ea237dd21dc1e39a0c25d715ed39d989.zip | |
small shift opts
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4525 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'tcg/tcg-op.h')
| -rw-r--r-- | tcg/tcg-op.h | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h index 8bc0b84a2..b354100e6 100644 --- a/tcg/tcg-op.h +++ b/tcg/tcg-op.h @@ -404,7 +404,11 @@ static inline void tcg_gen_shl_i32(TCGv ret, TCGv arg1, TCGv arg2) static inline void tcg_gen_shli_i32(TCGv ret, TCGv arg1, int32_t arg2) { - tcg_gen_shl_i32(ret, arg1, tcg_const_i32(arg2)); + if (arg2 == 0) { + tcg_gen_mov_i32(ret, arg1); + } else { + tcg_gen_shl_i32(ret, arg1, tcg_const_i32(arg2)); + } } static inline void tcg_gen_shr_i32(TCGv ret, TCGv arg1, TCGv arg2) @@ -414,7 +418,11 @@ static inline void tcg_gen_shr_i32(TCGv ret, TCGv arg1, TCGv arg2) static inline void tcg_gen_shri_i32(TCGv ret, TCGv arg1, int32_t arg2) { - tcg_gen_shr_i32(ret, arg1, tcg_const_i32(arg2)); + if (arg2 == 0) { + tcg_gen_mov_i32(ret, arg1); + } else { + tcg_gen_shr_i32(ret, arg1, tcg_const_i32(arg2)); + } } static inline void tcg_gen_sar_i32(TCGv ret, TCGv arg1, TCGv arg2) @@ -424,7 +432,11 @@ static inline void tcg_gen_sar_i32(TCGv ret, TCGv arg1, TCGv arg2) static inline void tcg_gen_sari_i32(TCGv ret, TCGv arg1, int32_t arg2) { - tcg_gen_sar_i32(ret, arg1, tcg_const_i32(arg2)); + if (arg2 == 0) { + tcg_gen_mov_i32(ret, arg1); + } else { + tcg_gen_sar_i32(ret, arg1, tcg_const_i32(arg2)); + } } static inline void tcg_gen_brcond_i32(int cond, TCGv arg1, TCGv arg2, @@ -862,7 +874,11 @@ static inline void tcg_gen_shl_i64(TCGv ret, TCGv arg1, TCGv arg2) static inline void tcg_gen_shli_i64(TCGv ret, TCGv arg1, int64_t arg2) { - tcg_gen_shl_i64(ret, arg1, tcg_const_i64(arg2)); + if (arg2 == 0) { + tcg_gen_mov_i64(ret, arg1); + } else { + tcg_gen_shl_i64(ret, arg1, tcg_const_i64(arg2)); + } } static inline void tcg_gen_shr_i64(TCGv ret, TCGv arg1, TCGv arg2) @@ -872,7 +888,11 @@ static inline void tcg_gen_shr_i64(TCGv ret, TCGv arg1, TCGv arg2) static inline void tcg_gen_shri_i64(TCGv ret, TCGv arg1, int64_t arg2) { - tcg_gen_shr_i64(ret, arg1, tcg_const_i64(arg2)); + if (arg2 == 0) { + tcg_gen_mov_i64(ret, arg1); + } else { + tcg_gen_shr_i64(ret, arg1, tcg_const_i64(arg2)); + } } static inline void tcg_gen_sar_i64(TCGv ret, TCGv arg1, TCGv arg2) @@ -882,7 +902,11 @@ static inline void tcg_gen_sar_i64(TCGv ret, TCGv arg1, TCGv arg2) static inline void tcg_gen_sari_i64(TCGv ret, TCGv arg1, int64_t arg2) { - tcg_gen_sar_i64(ret, arg1, tcg_const_i64(arg2)); + if (arg2 == 0) { + tcg_gen_mov_i64(ret, arg1); + } else { + tcg_gen_sar_i64(ret, arg1, tcg_const_i64(arg2)); + } } static inline void tcg_gen_brcond_i64(int cond, TCGv arg1, TCGv arg2, |