diff options
| author | Richard Henderson <rth@twiddle.net> | 2013-02-19 23:52:16 -0800 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2013-02-23 17:25:30 +0000 |
| commit | 146de60dcade65a401c6665ae4b51c2b15dfaa55 (patch) | |
| tree | b3aaf3ea1a9bb0ebfd2981b594b9e2322d837594 | |
| parent | ffe30937c89dd67a53bf3f35b962701cd9d8f70e (diff) | |
| download | qemu-146de60dcade65a401c6665ae4b51c2b15dfaa55.zip | |
target-ppc: Compute addition carry with setcond
Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
| -rw-r--r-- | target-ppc/translate.c | 42 |
1 files changed, 16 insertions, 26 deletions
diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 116cf12b3e..fce261b2c3 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -768,36 +768,26 @@ static inline void gen_op_arith_compute_ov(DisasContext *ctx, TCGv arg0, static inline void gen_op_arith_compute_ca(DisasContext *ctx, TCGv arg1, TCGv arg2, int sub) { - int l1 = gen_new_label(); + TCGv t0 = tcg_temp_new(), t1 = arg1, t2 = arg2; #if defined(TARGET_PPC64) if (!(ctx->sf_mode)) { - TCGv t0, t1; - t0 = tcg_temp_new(); - t1 = tcg_temp_new(); - - tcg_gen_ext32u_tl(t0, arg1); - tcg_gen_ext32u_tl(t1, arg2); - if (sub) { - tcg_gen_brcond_tl(TCG_COND_GTU, t0, t1, l1); - } else { - tcg_gen_brcond_tl(TCG_COND_GEU, t0, t1, l1); - } - tcg_gen_movi_tl(cpu_ca, 1); - gen_set_label(l1); - tcg_temp_free(t0); - tcg_temp_free(t1); - } else + t1 = t0; + tcg_gen_ext32u_tl(t1, arg1); + t2 = tcg_temp_new(); + tcg_gen_ext32u_tl(t2, arg2); + } #endif - { - if (sub) { - tcg_gen_brcond_tl(TCG_COND_GTU, arg1, arg2, l1); - } else { - tcg_gen_brcond_tl(TCG_COND_GEU, arg1, arg2, l1); - } - tcg_gen_movi_tl(cpu_ca, 1); - gen_set_label(l1); + + tcg_gen_setcond_tl(sub ? TCG_COND_LEU : TCG_COND_LTU, t0, t1, t2); + tcg_gen_or_tl(cpu_ca, cpu_ca, t0); + + tcg_temp_free(t0); +#if defined(TARGET_PPC64) + if (!(ctx->sf_mode)) { + tcg_temp_free(t2); } +#endif } /* Common add function */ @@ -811,7 +801,7 @@ static inline void gen_op_arith_add(DisasContext *ctx, TCGv ret, TCGv arg1, (!TCGV_EQUAL(ret,arg1) && !TCGV_EQUAL(ret, arg2))) { t0 = ret; } else { - t0 = tcg_temp_local_new(); + t0 = tcg_temp_new(); } if (add_ca) { |