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[PULL 52/54] target/ppc: cntlzdm/cnttzdm implementation without brcond
From: |
David Gibson |
Subject: |
[PULL 52/54] target/ppc: cntlzdm/cnttzdm implementation without brcond |
Date: |
Tue, 9 Nov 2021 16:52:02 +1100 |
From: Matheus Ferst <matheus.ferst@eldorado.org.br>
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>
---
target/ppc/translate/fixedpoint-impl.c.inc | 31 +++++++++++-----------
1 file 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)
--
2.33.1
- [PULL 41/54] target/ppc: added the instructions LXVP and STXVP, (continued)
- [PULL 41/54] target/ppc: added the instructions LXVP and STXVP, David Gibson, 2021/11/09
- [PULL 42/54] target/ppc: added the instructions LXVPX and STXVPX, David Gibson, 2021/11/09
- [PULL 43/54] target/ppc: added the instructions PLXV and PSTXV, David Gibson, 2021/11/09
- [PULL 49/54] target/ppc: implemented XXSPLTIDP instruction, David Gibson, 2021/11/09
- [PULL 44/54] target/ppc: added the instructions PLXVP and PSTXVP, David Gibson, 2021/11/09
- [PULL 47/54] target/ppc: implemented XXSPLTI32DX, David Gibson, 2021/11/09
- [PULL 45/54] target/ppc: moved XXSPLTW to using decodetree, David Gibson, 2021/11/09
- [PULL 46/54] target/ppc: moved XXSPLTIB to using decodetree, David Gibson, 2021/11/09
- [PULL 50/54] target/ppc: Implement xxblendvb/xxblendvh/xxblendvw/xxblendvd instructions, David Gibson, 2021/11/09
- [PULL 51/54] target/ppc: Implement lxvkq instruction, David Gibson, 2021/11/09
- [PULL 52/54] target/ppc: cntlzdm/cnttzdm implementation without brcond,
David Gibson <=
- [PULL 53/54] target/ppc, hw/ppc: Change maintainers, David Gibson, 2021/11/09
- [PULL 54/54] spapr_numa.c: FORM2 table handle nodes with no distance info, David Gibson, 2021/11/09
- Re: [PULL 00/54] ppc-for-6.2 queue 20211109, Richard Henderson, 2021/11/09