From patchwork Fri Sep 23 21:47:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lucas Mateus Martins Araujo e Castro X-Patchwork-Id: 12987236 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1EB93C04A95 for ; Fri, 23 Sep 2022 21:57:09 +0000 (UTC) Received: from localhost ([::1]:44030 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1obqfT-0006ED-Tn for qemu-devel@archiver.kernel.org; Fri, 23 Sep 2022 17:57:07 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51294) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1obqWm-0005Yf-7x; Fri, 23 Sep 2022 17:48:17 -0400 Received: from [200.168.210.66] (port=10149 helo=outlook.eldorado.org.br) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1obqWj-0006TY-Sp; Fri, 23 Sep 2022 17:48:08 -0400 Received: from p9ibm ([10.10.71.235]) by outlook.eldorado.org.br over TLS secured channel with Microsoft SMTPSVC(8.5.9600.16384); Fri, 23 Sep 2022 18:47:56 -0300 Received: from eldorado.org.br (unknown [10.10.70.45]) by p9ibm (Postfix) with ESMTP id A4B6A800491; Fri, 23 Sep 2022 18:47:56 -0300 (-03) From: "Lucas Mateus Castro(alqotel)" To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Cc: richard.henderson@linaro.org, Daniel Henrique Barboza , "Lucas Mateus Castro (alqotel)" , =?utf-8?q?C?= =?utf-8?q?=C3=A9dric_Le_Goater?= , David Gibson , Greg Kurz Subject: [PATCH 01/12] target/ppc: Moved VMLADDUHM to decodetree and use gvec Date: Fri, 23 Sep 2022 18:47:43 -0300 Message-Id: <20220923214754.217819-2-lucas.araujo@eldorado.org.br> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220923214754.217819-1-lucas.araujo@eldorado.org.br> References: <20220923214754.217819-1-lucas.araujo@eldorado.org.br> MIME-Version: 1.0 X-OriginalArrivalTime: 23 Sep 2022 21:47:56.0953 (UTC) FILETIME=[245CB890:01D8CF96] X-Host-Lookup-Failed: Reverse DNS lookup failed for 200.168.210.66 (failed) Received-SPF: pass client-ip=200.168.210.66; envelope-from=lucas.araujo@eldorado.org.br; helo=outlook.eldorado.org.br X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: "Lucas Mateus Castro (alqotel)" This patch moves VMLADDUHM to decodetree a creates a gvec implementation using mul_vec and add_vec. rept loop master patch 8 12500 0,01810500 0,00903100 (-50.1%) 25 4000 0,01739400 0,00747700 (-57.0%) 100 1000 0,01843600 0,00901400 (-51.1%) 500 200 0,02574600 0,01971000 (-23.4%) 2500 40 0,05921600 0,07121800 (+20.3%) 8000 12 0,15326700 0,21725200 (+41.7%) The significant difference in performance when REPT is low and LOOP is high I think is due to the fact that the new implementation has a higher translation time, as when using a helper only 5 TCGop are used but with the patch a total of 10 TCGop are needed (Power lacks a direct mul_vec equivalent so this instruction is implemented with the help of 5 others, vmuleu, vmulou, vmrgh, vmrgl and vpkum). Signed-off-by: Lucas Mateus Castro (alqotel) Reviewed-by: Richard Henderson --- target/ppc/helper.h | 2 +- target/ppc/insn32.decode | 2 ++ target/ppc/int_helper.c | 3 +- target/ppc/translate.c | 1 - target/ppc/translate/vmx-impl.c.inc | 48 ++++++++++++++++++----------- 5 files changed, 35 insertions(+), 21 deletions(-) diff --git a/target/ppc/helper.h b/target/ppc/helper.h index 57eee07256..9c562ab00e 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -264,7 +264,7 @@ DEF_HELPER_FLAGS_4(VMSUMUHM, TCG_CALL_NO_RWG, void, avr, avr, avr, avr) DEF_HELPER_5(VMSUMUHS, void, env, avr, avr, avr, avr) DEF_HELPER_FLAGS_4(VMSUMSHM, TCG_CALL_NO_RWG, void, avr, avr, avr, avr) DEF_HELPER_5(VMSUMSHS, void, env, avr, avr, avr, avr) -DEF_HELPER_FLAGS_4(vmladduhm, TCG_CALL_NO_RWG, void, avr, avr, avr, avr) +DEF_HELPER_FLAGS_5(VMLADDUHM, TCG_CALL_NO_RWG, void, avr, avr, avr, avr, i32) DEF_HELPER_FLAGS_2(mtvscr, TCG_CALL_NO_RWG, void, env, i32) DEF_HELPER_FLAGS_1(mfvscr, TCG_CALL_NO_RWG, i32, env) DEF_HELPER_3(lvebx, void, env, avr, tl) diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode index a5249ee32c..7445455a12 100644 --- a/target/ppc/insn32.decode +++ b/target/ppc/insn32.decode @@ -693,6 +693,8 @@ VMSUMUHS 000100 ..... ..... ..... ..... 100111 @VA VMSUMCUD 000100 ..... ..... ..... ..... 010111 @VA VMSUMUDM 000100 ..... ..... ..... ..... 100011 @VA +VMLADDUHM 000100 ..... ..... ..... ..... 100010 @VA + ## Vector String Instructions VSTRIBL 000100 ..... 00000 ..... . 0000001101 @VX_tb_rc diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index 696096100b..0d25000b2a 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -974,7 +974,8 @@ void helper_vmhraddshs(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, } } -void helper_vmladduhm(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c) +void helper_VMLADDUHM(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c, + uint32_t v) { int i; diff --git a/target/ppc/translate.c b/target/ppc/translate.c index e810842925..11f729c60c 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -6921,7 +6921,6 @@ GEN_HANDLER(lvsl, 0x1f, 0x06, 0x00, 0x00000001, PPC_ALTIVEC), GEN_HANDLER(lvsr, 0x1f, 0x06, 0x01, 0x00000001, PPC_ALTIVEC), GEN_HANDLER(mfvscr, 0x04, 0x2, 0x18, 0x001ff800, PPC_ALTIVEC), GEN_HANDLER(mtvscr, 0x04, 0x2, 0x19, 0x03ff0000, PPC_ALTIVEC), -GEN_HANDLER(vmladduhm, 0x04, 0x11, 0xFF, 0x00000000, PPC_ALTIVEC), #if defined(TARGET_PPC64) GEN_HANDLER_E(maddhd_maddhdu, 0x04, 0x18, 0xFF, 0x00000000, PPC_NONE, PPC2_ISA300), diff --git a/target/ppc/translate/vmx-impl.c.inc b/target/ppc/translate/vmx-impl.c.inc index e644ad3236..9f18c6d4f2 100644 --- a/target/ppc/translate/vmx-impl.c.inc +++ b/target/ppc/translate/vmx-impl.c.inc @@ -2523,24 +2523,6 @@ static void glue(gen_, name0##_##name1)(DisasContext *ctx) \ GEN_VAFORM_PAIRED(vmhaddshs, vmhraddshs, 16) -static void gen_vmladduhm(DisasContext *ctx) -{ - TCGv_ptr ra, rb, rc, rd; - if (unlikely(!ctx->altivec_enabled)) { - gen_exception(ctx, POWERPC_EXCP_VPU); - return; - } - ra = gen_avr_ptr(rA(ctx->opcode)); - rb = gen_avr_ptr(rB(ctx->opcode)); - rc = gen_avr_ptr(rC(ctx->opcode)); - rd = gen_avr_ptr(rD(ctx->opcode)); - gen_helper_vmladduhm(rd, ra, rb, rc); - tcg_temp_free_ptr(ra); - tcg_temp_free_ptr(rb); - tcg_temp_free_ptr(rc); - tcg_temp_free_ptr(rd); -} - static bool do_va_helper(DisasContext *ctx, arg_VA *a, void (*gen_helper)(TCGv_ptr, TCGv_ptr, TCGv_ptr, TCGv_ptr)) { @@ -2569,6 +2551,36 @@ TRANS_FLAGS2(ALTIVEC_207, VSUBECUQ, do_va_helper, gen_helper_VSUBECUQ) TRANS_FLAGS(ALTIVEC, VPERM, do_va_helper, gen_helper_VPERM) TRANS_FLAGS2(ISA300, VPERMR, do_va_helper, gen_helper_VPERMR) +static void gen_vmladduhm_vec(unsigned vece, TCGv_vec t, TCGv_vec a, TCGv_vec b, + TCGv_vec c) +{ + tcg_gen_mul_vec(vece, t, a, b); + tcg_gen_add_vec(vece, t, t, c); +} + +static bool trans_VMLADDUHM(DisasContext *ctx, arg_VA *a) +{ + static const TCGOpcode vecop_list[] = { + INDEX_op_add_vec, INDEX_op_mul_vec, 0 + }; + + static const GVecGen4 op = { + .fno = gen_helper_VMLADDUHM, + .fniv = gen_vmladduhm_vec, + .opt_opc = vecop_list, + .vece = MO_16 + }; + + REQUIRE_INSNS_FLAGS(ctx, ALTIVEC); + REQUIRE_VECTOR(ctx); + + tcg_gen_gvec_4(avr_full_offset(a->vrt), avr_full_offset(a->vra), + avr_full_offset(a->vrb), avr_full_offset(a->rc), + 16, 16, &op); + + return true; +} + static bool trans_VSEL(DisasContext *ctx, arg_VA *a) { REQUIRE_INSNS_FLAGS(ctx, ALTIVEC);