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| author | Richard Henderson <rth@twiddle.net> | 2012-10-09 14:49:58 -0700 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2012-10-13 10:17:28 +0000 |
| commit | 96b5a3d3cf49d27e6da7ceac683a1b38d122e6fa (patch) | |
| tree | e38d566fd38d84dd05ce342d807b9f866fac2681 /target-sparc | |
| parent | 0fa2a0660c7516d13bc149ff9a3b417e9778137e (diff) | |
| download | qemu-96b5a3d3cf49d27e6da7ceac683a1b38d122e6fa.zip qemu-96b5a3d3cf49d27e6da7ceac683a1b38d122e6fa.tar.gz qemu-96b5a3d3cf49d27e6da7ceac683a1b38d122e6fa.tar.bz2 | |
target-sparc: Optimize CC_OP_LOGIC conditions
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'target-sparc')
| -rw-r--r-- | target-sparc/translate.c | 58 |
1 files changed, 40 insertions, 18 deletions
diff --git a/target-sparc/translate.c b/target-sparc/translate.c index 71b9d65..4409f69 100644 --- a/target-sparc/translate.c +++ b/target-sparc/translate.c @@ -1050,7 +1050,7 @@ static void gen_compare(DisasCompare *cmp, bool xcc, unsigned int cond, DisasContext *dc) { static int subcc_cond[16] = { - -1, /* never */ + TCG_COND_NEVER, TCG_COND_EQ, TCG_COND_LE, TCG_COND_LT, @@ -1058,7 +1058,7 @@ static void gen_compare(DisasCompare *cmp, bool xcc, unsigned int cond, TCG_COND_LTU, -1, /* neg */ -1, /* overflow */ - -1, /* always */ + TCG_COND_ALWAYS, TCG_COND_NE, TCG_COND_GT, TCG_COND_GE, @@ -1068,6 +1068,25 @@ static void gen_compare(DisasCompare *cmp, bool xcc, unsigned int cond, -1, /* no overflow */ }; + static int logic_cond[16] = { + TCG_COND_NEVER, + TCG_COND_EQ, /* eq: Z */ + TCG_COND_LE, /* le: Z | (N ^ V) -> Z | N */ + TCG_COND_LT, /* lt: N ^ V -> N */ + TCG_COND_EQ, /* leu: C | Z -> Z */ + TCG_COND_NEVER, /* ltu: C -> 0 */ + TCG_COND_LT, /* neg: N */ + TCG_COND_NEVER, /* vs: V -> 0 */ + TCG_COND_ALWAYS, + TCG_COND_NE, /* ne: !Z */ + TCG_COND_GT, /* gt: !(Z | (N ^ V)) -> !(Z | N) */ + TCG_COND_GE, /* ge: !(N ^ V) -> !N */ + TCG_COND_NE, /* gtu: !(C | Z) -> !Z */ + TCG_COND_ALWAYS, /* geu: !C -> 1 */ + TCG_COND_GE, /* pos: !N */ + TCG_COND_ALWAYS, /* vc: !V -> 1 */ + }; + TCGv_i32 r_src; TCGv r_dst; @@ -1082,28 +1101,31 @@ static void gen_compare(DisasCompare *cmp, bool xcc, unsigned int cond, #endif switch (dc->cc_op) { + case CC_OP_LOGIC: + cmp->cond = logic_cond[cond]; + do_compare_dst_0: + cmp->is_bool = false; + cmp->g2 = false; + cmp->c2 = tcg_const_tl(0); +#ifdef TARGET_SPARC64 + if (!xcc) { + cmp->g1 = false; + cmp->c1 = tcg_temp_new(); + tcg_gen_ext32s_tl(cmp->c1, cpu_cc_dst); + break; + } +#endif + cmp->g1 = true; + cmp->c1 = cpu_cc_dst; + break; + case CC_OP_SUB: switch (cond) { case 6: /* neg */ case 14: /* pos */ cmp->cond = (cond == 6 ? TCG_COND_LT : TCG_COND_GE); - cmp->is_bool = false; - cmp->g2 = false; - cmp->c2 = tcg_const_tl(0); -#ifdef TARGET_SPARC64 - if (!xcc) { - cmp->g1 = false; - cmp->c1 = tcg_temp_new(); - tcg_gen_ext32s_tl(cmp->c1, cpu_cc_dst); - break; - } -#endif - cmp->g1 = true; - cmp->c1 = cpu_cc_dst; - break; + goto do_compare_dst_0; - case 0: /* never */ - case 8: /* always */ case 7: /* overflow */ case 15: /* !overflow */ goto do_dynamic; |