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microblaze: Use setcond for conditional branches 

Use setcond for evaluating the condition for branches.
In the future, we could do better for branches without
delay slots.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
This commit is contained in:
Edgar E. Iglesias 2010-07-24 21:51:51 +02:00 committed by Edgar E. Iglesias
parent 61204ce8ec
commit b2565c694a
1 changed files with 6 additions and 32 deletions
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38
target-microblaze/translate.c
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@ -912,50 +912,24 @@ static void dec_store(DisasContext *dc)
static inline void eval_cc(DisasContext *dc, unsigned int cc,
TCGv d, TCGv a, TCGv b)
{
int l1;
switch (cc) {
case CC_EQ:
l1 = gen_new_label();
tcg_gen_movi_tl(env_btaken, 1);
tcg_gen_brcond_tl(TCG_COND_EQ, a, b, l1);
tcg_gen_movi_tl(env_btaken, 0);
gen_set_label(l1);
tcg_gen_setcond_tl(TCG_COND_EQ, d, a, b);
break;
case CC_NE:
l1 = gen_new_label();
tcg_gen_movi_tl(env_btaken, 1);
tcg_gen_brcond_tl(TCG_COND_NE, a, b, l1);
tcg_gen_movi_tl(env_btaken, 0);
gen_set_label(l1);
tcg_gen_setcond_tl(TCG_COND_NE, d, a, b);
break;
case CC_LT:
l1 = gen_new_label();
tcg_gen_movi_tl(env_btaken, 1);
tcg_gen_brcond_tl(TCG_COND_LT, a, b, l1);
tcg_gen_movi_tl(env_btaken, 0);
gen_set_label(l1);
tcg_gen_setcond_tl(TCG_COND_LT, d, a, b);
break;
case CC_LE:
l1 = gen_new_label();
tcg_gen_movi_tl(env_btaken, 1);
tcg_gen_brcond_tl(TCG_COND_LE, a, b, l1);
tcg_gen_movi_tl(env_btaken, 0);
gen_set_label(l1);
tcg_gen_setcond_tl(TCG_COND_LE, d, a, b);
break;
case CC_GE:
l1 = gen_new_label();
tcg_gen_movi_tl(env_btaken, 1);
tcg_gen_brcond_tl(TCG_COND_GE, a, b, l1);
tcg_gen_movi_tl(env_btaken, 0);
gen_set_label(l1);
tcg_gen_setcond_tl(TCG_COND_GE, d, a, b);
break;
case CC_GT:
l1 = gen_new_label();
tcg_gen_movi_tl(env_btaken, 1);
tcg_gen_brcond_tl(TCG_COND_GT, a, b, l1);
tcg_gen_movi_tl(env_btaken, 0);
gen_set_label(l1);
tcg_gen_setcond_tl(TCG_COND_GT, d, a, b);
break;
default:
cpu_abort(dc->env, "Unknown condition code %x.\n", cc);