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Fix andi, optimize addi and subi zero cases

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3985 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1 2008-02-20 18:01:23 +00:00
parent f650305967
commit 7089442cb6
1 changed files with 13 additions and 3 deletions
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16
tcg/tcg-op.h
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@ -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 {