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Optimize cmp x, 0 case

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Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Blue Swirl 2009-05-03 18:51:27 +00:00
parent dc1a6971e3
commit 719f66a770
1 changed files with 19 additions and 14 deletions
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33
target-sparc/translate.c
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@ -431,6 +431,18 @@ static inline void gen_cc_V_tag(TCGv src1, TCGv src2)
gen_set_label(l1); gen_set_label(l1);
} }
static inline void gen_op_logic_cc(TCGv dst)
{
tcg_gen_mov_tl(cpu_cc_dst, dst);
gen_cc_clear_icc();
gen_cc_NZ_icc(cpu_cc_dst);
#ifdef TARGET_SPARC64
gen_cc_clear_xcc();
gen_cc_NZ_xcc(cpu_cc_dst);
#endif
}
static inline void gen_tag_tv(TCGv src1, TCGv src2) static inline void gen_tag_tv(TCGv src1, TCGv src2)
{ {
int l1; int l1;
@ -669,8 +681,13 @@ static inline void gen_op_subi_cc(TCGv dst, TCGv src1, target_long src2)
{ {
tcg_gen_mov_tl(cpu_cc_src, src1); tcg_gen_mov_tl(cpu_cc_src, src1);
tcg_gen_movi_tl(cpu_cc_src2, src2); tcg_gen_movi_tl(cpu_cc_src2, src2);
tcg_gen_subi_tl(cpu_cc_dst, cpu_cc_src, src2); if (src2 == 0) {
gen_op_sub_cc2(dst); tcg_gen_mov_tl(dst, src1);
gen_op_logic_cc(dst);
} else {
tcg_gen_subi_tl(cpu_cc_dst, cpu_cc_src, src2);
gen_op_sub_cc2(dst);
}
} }
static inline void gen_op_sub_cc(TCGv dst, TCGv src1, TCGv src2) static inline void gen_op_sub_cc(TCGv dst, TCGv src1, TCGv src2)
@ -906,18 +923,6 @@ static inline void gen_op_div_cc(TCGv dst)
gen_set_label(l1); gen_set_label(l1);
} }
static inline void gen_op_logic_cc(TCGv dst)
{
tcg_gen_mov_tl(cpu_cc_dst, dst);
gen_cc_clear_icc();
gen_cc_NZ_icc(cpu_cc_dst);
#ifdef TARGET_SPARC64
gen_cc_clear_xcc();
gen_cc_NZ_xcc(cpu_cc_dst);
#endif
}
// 1 // 1
static inline void gen_op_eval_ba(TCGv dst) static inline void gen_op_eval_ba(TCGv dst)
{ {