From mboxrd@z Thu Jan 1 00:00:00 1970 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 lists1p.gnu.org (lists1p.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 A9057C43458 for ; Tue, 7 Jul 2026 04:47:38 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wgxiC-0002a1-UK; Tue, 07 Jul 2026 00:47:12 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wgxi0-0002Za-7t; Tue, 07 Jul 2026 00:47:01 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wgxhy-0004d5-6P; Tue, 07 Jul 2026 00:47:00 -0400 Received: from pps.filterd (m0353725.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 6674IQ7Q1651438; Tue, 7 Jul 2026 04:46:54 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=pp1; bh=laugY/ vRzxko+XkMid37upwnAeU9sR6UxgifKd6cY9M=; b=J0BXj4izYtiYhy+6JCIuwL 0cMfpJeIIIMBPFTqY/yluBPYIm52KxokDhGEErlZ2Ukv/jdNhJ/NOat0I7u5fEQY Ko459vBVZIvVb4wNwLmtV7j7BhqjCgQZgH+PgXzfkf6XMJPEFpv17/ITdVxvT2sc w5SSbhy8iW0Ewkeaq0PSPpERLhUe8en1qlTkXEzFmsCrTpC/5bVPFM/UVjlmiAF6 0h09H9ONWT/4pVYz1VGwYJVmQt/idR27IaaeGpoYArM1EeWVzMCUd3LaGj26DYBM pj3Or7oxcFrEDDUAkOr8to773S5Fz/2s4ojcWflPwwiErkVB80IHtMavfcap1uEA == Received: from ppma12.dal12v.mail.ibm.com (dc.9e.1632.ip4.static.sl-reverse.com [50.22.158.220]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4f6rkdnng2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Jul 2026 04:46:54 +0000 (GMT) Received: from pps.filterd (ppma12.dal12v.mail.ibm.com [127.0.0.1]) by ppma12.dal12v.mail.ibm.com (8.18.1.7/8.18.1.7) with ESMTP id 6674Ykfm007585; Tue, 7 Jul 2026 04:46:53 GMT Received: from smtprelay02.fra02v.mail.ibm.com ([9.218.2.226]) by ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 4f7cgq144x-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Jul 2026 04:46:53 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (smtpav06.fra02v.mail.ibm.com [10.20.54.105]) by smtprelay02.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 6674knTo47710558 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 7 Jul 2026 04:46:49 GMT Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 74D3E20049; Tue, 7 Jul 2026 04:46:49 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 20E9D20040; Tue, 7 Jul 2026 04:46:41 +0000 (GMT) Received: from [9.67.174.189] (unknown [9.67.174.189]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 7 Jul 2026 04:46:40 +0000 (GMT) Message-ID: <5989ac89-95dc-436d-addb-da85d05dc78e@linux.ibm.com> Date: Tue, 7 Jul 2026 10:16:03 +0530 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH 04/28] target/ppc: Move vector merge instructions to decodetree To: Chinmay Rath , qemu-devel@nongnu.org, qemu-ppc@nongnu.org, npiggin@gmail.com, harshpb@linux.ibm.com, richard.henderson@linaro.org, peter.maydell@linaro.org, stefanha@redhat.com Cc: milesg@linux.ibm.com, vishalc@linux.ibm.com, tshah@linux.ibm.com, shivangu@linux.ibm.com, ojaswin@linux.ibm.com, aboorvad@linux.ibm.com, amachhiw@linux.ibm.com, sv@linux.ibm.com, shivani@linux.ibm.com, mkchauras@gmail.com, uverma@linux.ibm.com References: <20260520160728.2283628-1-rathc@linux.ibm.com> <20260520160728.2283628-5-rathc@linux.ibm.com> Content-Language: en-US From: Nikhil Kumar Singh In-Reply-To: <20260520160728.2283628-5-rathc@linux.ibm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Authority-Analysis: v=2.4 cv=M7J97Sws c=1 sm=1 tr=0 ts=6a4c84be cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h:22 a=VnNF1IyMAAAA:8 a=ofI7FyNq1RD1R-BscFsA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzA3MDAzNyBTYWx0ZWRfX2JTXjkJbDD1E AgOYfuZRGrqH85MeOxwGAFy/7wqKJqzsCUeuBsMSriVJmCi9PB3japFMChHNiVR90vHYwzsLdxi /Lc3HO+7wH8tnB2A9JZVp6fJyndqn+CO5kY/XgeNdySf6LfoTiPnLpxJj9rWPnFED1GMLOBartZ /V+jCcm3bWeISHZI6lomGJbe7+kBH8F1AhJkQoCJYq8ZEAp+OrIiWJbHHuZkZR8+g4yU8T6IiHM U+NDc0AIvHU7kuN2zNbEXG4eavNHR8CpNAMp4U5AjZO0F4SJkkI8hdD5DmBCEZC70IBNshtF77J hsrEB4gPBFCcBeySgz4VEsjTSHQNhSK4oqNxwgyJlX59ndQBLXcOgtK36L69B3SV9M3aKxOxYhZ s7D1aRwt5FcXvi44Hfs0D7YOM1nRtMkBMx+m7Nb5E0dmS9aC8rwYPUhiaCJoeZBCydN+4Tc/U25 ZTLMeaLaviWcGFyJk3A== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzA3MDAzNyBTYWx0ZWRfX3dJim4BWYRHi jXBr1RNimQ1I5KcavbqvCy8fEKqPzUrxsOXi6IuZ/IoOTtKMTe9xP/4bTTOV9i6GKFJx7PQVXxE HwJzQhYQfWMdBvFHJmJeqkQaAqIAFZk= X-Proofpoint-GUID: c0vLbxVkBDLmIQLlBCmT-K-qvSMQXVI0 X-Proofpoint-ORIG-GUID: PqiqLZrO9UG5H7-NP5ohydJzsGSaiVsB X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-07_01,2026-07-06_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 lowpriorityscore=0 malwarescore=0 clxscore=1015 adultscore=0 priorityscore=1501 bulkscore=0 spamscore=0 impostorscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607070037 Received-SPF: pass client-ip=148.163.158.5; envelope-from=nikhilks@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development 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-bounces+qemu-devel=archiver.kernel.org@nongnu.org Reviewed-by: Nikhil Kumar Singh Thanks, ~ Nikhil On 20/05/26 21:37, Chinmay Rath wrote: > From: Aboorva Devarajan > > Move below instructions to decodetree specification: > > vmrg{hb, hh, hw, lb, lh, lw} : VX-form > > The individual gen_vmrg* functions generated by GEN_VXFORM are > replaced by a shared do_vmrg() helper dispatching to the existing > gen_helper_VMRG* TCG helpers via the TRANS_FLAGS() macro, which > also handles the ALTIVEC facility check. > > The changes were verified by validating that the tcg ops generated by > those instructions remain the same, which were captured with the '-d > in_asm,op' flag. > > Signed-off-by: Aboorva Devarajan > Signed-off-by: Chinmay Rath > --- > target/ppc/helper.h | 12 ++++++------ > target/ppc/insn32.decode | 9 +++++++++ > target/ppc/int_helper.c | 12 ++++++------ > target/ppc/translate/vmx-impl.c.inc | 25 +++++++++++++++++++------ > target/ppc/translate/vmx-ops.c.inc | 6 ------ > 5 files changed, 40 insertions(+), 24 deletions(-) > > diff --git a/target/ppc/helper.h b/target/ppc/helper.h > index 37803ebb17..d23260ddd0 100644 > --- a/target/ppc/helper.h > +++ b/target/ppc/helper.h > @@ -174,12 +174,12 @@ DEF_HELPER_4(vcmpeqfp_dot, void, env, avr, avr, avr) > DEF_HELPER_4(vcmpgefp_dot, void, env, avr, avr, avr) > DEF_HELPER_4(vcmpgtfp_dot, void, env, avr, avr, avr) > DEF_HELPER_4(vcmpbfp_dot, void, env, avr, avr, avr) > -DEF_HELPER_FLAGS_3(vmrglb, TCG_CALL_NO_RWG, void, avr, avr, avr) > -DEF_HELPER_FLAGS_3(vmrglh, TCG_CALL_NO_RWG, void, avr, avr, avr) > -DEF_HELPER_FLAGS_3(vmrglw, TCG_CALL_NO_RWG, void, avr, avr, avr) > -DEF_HELPER_FLAGS_3(vmrghb, TCG_CALL_NO_RWG, void, avr, avr, avr) > -DEF_HELPER_FLAGS_3(vmrghh, TCG_CALL_NO_RWG, void, avr, avr, avr) > -DEF_HELPER_FLAGS_3(vmrghw, TCG_CALL_NO_RWG, void, avr, avr, avr) > +DEF_HELPER_FLAGS_3(VMRGLB, TCG_CALL_NO_RWG, void, avr, avr, avr) > +DEF_HELPER_FLAGS_3(VMRGLH, TCG_CALL_NO_RWG, void, avr, avr, avr) > +DEF_HELPER_FLAGS_3(VMRGLW, TCG_CALL_NO_RWG, void, avr, avr, avr) > +DEF_HELPER_FLAGS_3(VMRGHB, TCG_CALL_NO_RWG, void, avr, avr, avr) > +DEF_HELPER_FLAGS_3(VMRGHH, TCG_CALL_NO_RWG, void, avr, avr, avr) > +DEF_HELPER_FLAGS_3(VMRGHW, TCG_CALL_NO_RWG, void, avr, avr, avr) > DEF_HELPER_FLAGS_3(VMULESB, TCG_CALL_NO_RWG, void, avr, avr, avr) > DEF_HELPER_FLAGS_3(VMULESH, TCG_CALL_NO_RWG, void, avr, avr, avr) > DEF_HELPER_FLAGS_3(VMULESW, TCG_CALL_NO_RWG, void, avr, avr, avr) > diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode > index 0fbabefba9..d9cc191de5 100644 > --- a/target/ppc/insn32.decode > +++ b/target/ppc/insn32.decode > @@ -795,6 +795,15 @@ VNOR 000100 ..... ..... ..... 10100000100 @VX > VXOR 000100 ..... ..... ..... 10011000100 @VX > VEQV 000100 ..... ..... ..... 11010000100 @VX > > +## Vector Merge Instructions > + > +VMRGHB 000100 ..... ..... ..... 00000001100 @VX > +VMRGHH 000100 ..... ..... ..... 00001001100 @VX > +VMRGHW 000100 ..... ..... ..... 00010001100 @VX > +VMRGLB 000100 ..... ..... ..... 00100001100 @VX > +VMRGLH 000100 ..... ..... ..... 00101001100 @VX > +VMRGLW 000100 ..... ..... ..... 00110001100 @VX > + > ## Vector Integer Average Instructions > > VAVGSB 000100 ..... ..... ..... 10100000010 @VX > diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c > index ef4b2e75d6..a3adf746bd 100644 > --- a/target/ppc/int_helper.c > +++ b/target/ppc/int_helper.c > @@ -950,7 +950,7 @@ void helper_VMLADDUHM(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c, > } > > #define VMRG_DO(name, element, access, ofs) \ > - void helper_v##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \ > + void helper_V##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \ > { \ > ppc_avr_t result; \ > int i, half = ARRAY_SIZE(r->element) / 2; \ > @@ -963,11 +963,11 @@ void helper_VMLADDUHM(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c, > } > > #define VMRG(suffix, element, access) \ > - VMRG_DO(mrgl##suffix, element, access, half) \ > - VMRG_DO(mrgh##suffix, element, access, 0) > -VMRG(b, u8, VsrB) > -VMRG(h, u16, VsrH) > -VMRG(w, u32, VsrW) > + VMRG_DO(MRGL##suffix, element, access, half) \ > + VMRG_DO(MRGH##suffix, element, access, 0) > +VMRG(B, u8, VsrB) > +VMRG(H, u16, VsrH) > +VMRG(W, u32, VsrW) > #undef VMRG_DO > #undef VMRG > > diff --git a/target/ppc/translate/vmx-impl.c.inc b/target/ppc/translate/vmx-impl.c.inc > index 92d6e8c603..00b359f031 100644 > --- a/target/ppc/translate/vmx-impl.c.inc > +++ b/target/ppc/translate/vmx-impl.c.inc > @@ -350,12 +350,25 @@ GEN_VXFORM_V(vsububm, MO_8, tcg_gen_gvec_sub, 0, 16); > GEN_VXFORM_V(vsubuhm, MO_16, tcg_gen_gvec_sub, 0, 17); > GEN_VXFORM_V(vsubuwm, MO_32, tcg_gen_gvec_sub, 0, 18); > GEN_VXFORM_V(vsubudm, MO_64, tcg_gen_gvec_sub, 0, 19); > -GEN_VXFORM(vmrghb, 6, 0); > -GEN_VXFORM(vmrghh, 6, 1); > -GEN_VXFORM(vmrghw, 6, 2); > -GEN_VXFORM(vmrglb, 6, 4); > -GEN_VXFORM(vmrglh, 6, 5); > -GEN_VXFORM(vmrglw, 6, 6); > + > +static bool do_vmrg(DisasContext *ctx, arg_VX *a, > + void (*helper)(TCGv_ptr, TCGv_ptr, TCGv_ptr)) > +{ > + TCGv_ptr ra, rb, rd; > + REQUIRE_VECTOR(ctx); > + ra = gen_avr_ptr(a->vra); > + rb = gen_avr_ptr(a->vrb); > + rd = gen_avr_ptr(a->vrt); > + helper(rd, ra, rb); > + return true; > +} > + > +TRANS_FLAGS(ALTIVEC, VMRGHB, do_vmrg, gen_helper_VMRGHB); > +TRANS_FLAGS(ALTIVEC, VMRGHH, do_vmrg, gen_helper_VMRGHH); > +TRANS_FLAGS(ALTIVEC, VMRGHW, do_vmrg, gen_helper_VMRGHW); > +TRANS_FLAGS(ALTIVEC, VMRGLB, do_vmrg, gen_helper_VMRGLB); > +TRANS_FLAGS(ALTIVEC, VMRGLH, do_vmrg, gen_helper_VMRGLH); > +TRANS_FLAGS(ALTIVEC, VMRGLW, do_vmrg, gen_helper_VMRGLW); > > static void trans_vmrgew(DisasContext *ctx) > { > diff --git a/target/ppc/translate/vmx-ops.c.inc b/target/ppc/translate/vmx-ops.c.inc > index e28958a126..b8f77d3d2c 100644 > --- a/target/ppc/translate/vmx-ops.c.inc > +++ b/target/ppc/translate/vmx-ops.c.inc > @@ -33,12 +33,6 @@ GEN_VXFORM_DUAL(vsubuhm, bcdsub, 0, 17, PPC_ALTIVEC, PPC_NONE), > GEN_VXFORM_DUAL(vsubuwm, bcdus, 0, 18, PPC_ALTIVEC, PPC2_ISA300), > GEN_VXFORM_DUAL(vsubudm, bcds, 0, 19, PPC2_ALTIVEC_207, PPC2_ISA300), > GEN_VXFORM_300(bcds, 0, 27), > -GEN_VXFORM(vmrghb, 6, 0), > -GEN_VXFORM(vmrghh, 6, 1), > -GEN_VXFORM(vmrghw, 6, 2), > -GEN_VXFORM(vmrglb, 6, 4), > -GEN_VXFORM(vmrglh, 6, 5), > -GEN_VXFORM(vmrglw, 6, 6), > GEN_VXFORM_300(vextublx, 6, 24), > GEN_VXFORM_300(vextuhlx, 6, 25), > GEN_VXFORM_DUAL(vmrgow, vextuwlx, 6, 26, PPC_NONE, PPC2_ALTIVEC_207),