diff options
| author | Matheus Ferst <matheus.ferst@eldorado.org.br> | 2021-11-04 09:37:19 -0300 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2021-11-09 10:32:53 +1100 |
| commit | ab1e25ad2f2fcc3c3d0f01b24f272a2bc2a42e3e (patch) | |
| tree | ccf6b010ede86c840b501f8e39572e45c1edacde /target/ppc/translate | |
| parent | 6e26b85de5f00629e074aef9260a7632a8978f08 (diff) | |
target/ppc: cntlzdm/cnttzdm implementation without brcond
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20211104123719.323713-26-matheus.ferst@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'target/ppc/translate')
| -rw-r--r-- | target/ppc/translate/fixedpoint-impl.c.inc | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/target/ppc/translate/fixedpoint-impl.c.inc b/target/ppc/translate/fixedpoint-impl.c.inc index e093562e2a..7fecff4579 100644 --- a/target/ppc/translate/fixedpoint-impl.c.inc +++ b/target/ppc/translate/fixedpoint-impl.c.inc @@ -416,32 +416,33 @@ static bool trans_CFUGED(DisasContext *ctx, arg_X *a) static void do_cntzdm(TCGv_i64 dst, TCGv_i64 src, TCGv_i64 mask, int64_t trail) { - TCGv_i64 tmp; - TCGLabel *l1; + TCGv_i64 t0, t1; - tmp = tcg_temp_local_new_i64(); - l1 = gen_new_label(); + t0 = tcg_temp_new_i64(); + t1 = tcg_temp_new_i64(); - tcg_gen_and_i64(tmp, src, mask); + tcg_gen_and_i64(t0, src, mask); if (trail) { - tcg_gen_ctzi_i64(tmp, tmp, 64); + tcg_gen_ctzi_i64(t0, t0, -1); } else { - tcg_gen_clzi_i64(tmp, tmp, 64); + tcg_gen_clzi_i64(t0, t0, -1); } - tcg_gen_brcondi_i64(TCG_COND_EQ, tmp, 0, l1); - - tcg_gen_subfi_i64(tmp, 64, tmp); + tcg_gen_setcondi_i64(TCG_COND_NE, t1, t0, -1); + tcg_gen_andi_i64(t0, t0, 63); + tcg_gen_xori_i64(t0, t0, 63); if (trail) { - tcg_gen_shl_i64(tmp, mask, tmp); + tcg_gen_shl_i64(t0, mask, t0); + tcg_gen_shl_i64(t0, t0, t1); } else { - tcg_gen_shr_i64(tmp, mask, tmp); + tcg_gen_shr_i64(t0, mask, t0); + tcg_gen_shr_i64(t0, t0, t1); } - tcg_gen_ctpop_i64(tmp, tmp); - gen_set_label(l1); + tcg_gen_ctpop_i64(dst, t0); - tcg_gen_mov_i64(dst, tmp); + tcg_temp_free_i64(t0); + tcg_temp_free_i64(t1); } static bool trans_CNTLZDM(DisasContext *ctx, arg_X *a) |