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authorRichard Henderson <rth@twiddle.net>2012-10-09 14:49:58 -0700
committerBlue Swirl <blauwirbel@gmail.com>2012-10-13 10:17:28 +0000
commit96b5a3d3cf49d27e6da7ceac683a1b38d122e6fa (patch)
treee38d566fd38d84dd05ce342d807b9f866fac2681 /target-sparc
parent0fa2a0660c7516d13bc149ff9a3b417e9778137e (diff)
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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.c58
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;