diff options
| author | blueswir1 <blueswir1@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-02-20 18:01:23 +0000 |
|---|---|---|
| committer | blueswir1 <blueswir1@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-02-20 18:01:23 +0000 |
| commit | 7089442cb6214a46b1476d18d068f8b2972d1b22 (patch) | |
| tree | ae5dd6b8b99c24532ca1964b8bfd5cb7e5669742 /tcg | |
| parent | f650305967f3e9a2fe96f59de3062fd9e8b189d0 (diff) | |
Fix andi, optimize addi and subi zero cases
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3985 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/tcg-op.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h index 82aebb3219..be504643c3 100644 --- a/tcg/tcg-op.h +++ b/tcg/tcg-op.h @@ -252,7 +252,12 @@ static inline void tcg_gen_add_i32(TCGv ret, TCGv arg1, TCGv arg2) static inline void tcg_gen_addi_i32(TCGv ret, TCGv arg1, int32_t arg2) { - tcg_gen_add_i32(ret, arg1, tcg_const_i32(arg2)); + /* some cases can be optimized here */ + if (arg2 == 0) { + tcg_gen_mov_i32(ret, arg1); + } else { + tcg_gen_add_i32(ret, arg1, tcg_const_i32(arg2)); + } } static inline void tcg_gen_sub_i32(TCGv ret, TCGv arg1, TCGv arg2) @@ -262,7 +267,12 @@ static inline void tcg_gen_sub_i32(TCGv ret, TCGv arg1, TCGv arg2) static inline void tcg_gen_subi_i32(TCGv ret, TCGv arg1, int32_t arg2) { - tcg_gen_sub_i32(ret, arg1, tcg_const_i32(arg2)); + /* some cases can be optimized here */ + if (arg2 == 0) { + tcg_gen_mov_i32(ret, arg1); + } else { + tcg_gen_sub_i32(ret, arg1, tcg_const_i32(arg2)); + } } static inline void tcg_gen_and_i32(TCGv ret, TCGv arg1, TCGv arg2) @@ -291,7 +301,7 @@ static inline void tcg_gen_ori_i32(TCGv ret, TCGv arg1, int32_t arg2) { /* some cases can be optimized here */ if (arg2 == 0xffffffff) { - tcg_gen_movi_i32(ret, 0); + tcg_gen_movi_i32(ret, 0xffffffff); } else if (arg2 == 0) { tcg_gen_mov_i32(ret, arg1); } else { |