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GET /api/1.0/patches/2175757/?format=api
{ "id": 2175757, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2175757/?format=api", "project": { "id": 17, "url": "http://patchwork.ozlabs.org/api/1.0/projects/17/?format=api", "name": "GNU Compiler Collection", "link_name": "gcc", "list_id": "gcc-patches.gcc.gnu.org", "list_email": "gcc-patches@gcc.gnu.org", "web_url": null, "scm_url": null, "webscm_url": null }, "msgid": "<20251218211109.3562-5-chris.bazley@arm.com>", "date": "2025-12-18T21:11:02", "name": "[v7,04/10] Refactor check_load_store_for_partial_vectors", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "404988c49c691511ed37c7759f33f9bb5f3fb21a", "submitter": { "id": 89471, "url": "http://patchwork.ozlabs.org/api/1.0/people/89471/?format=api", "name": "Christopher Bazley", "email": "Chris.Bazley@arm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/20251218211109.3562-5-chris.bazley@arm.com/mbox/", "series": [ { "id": 485915, "url": "http://patchwork.ozlabs.org/api/1.0/series/485915/?format=api", "date": "2025-12-18T21:10:58", "name": "Extend BB SLP vectorization to use predicated tails", "version": 7, "mbox": "http://patchwork.ozlabs.org/series/485915/mbox/" } ], "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2175757/checks/", "tags": {}, "headers": { "Return-Path": "<gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "gcc-patches@gcc.gnu.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "gcc-patches@gcc.gnu.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=arm.com header.i=@arm.com header.a=rsa-sha256\n header.s=selector1 header.b=pbkXgl5m;\n\tdkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com\n header.a=rsa-sha256 header.s=selector1 header.b=pbkXgl5m;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=38.145.34.32; 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dkim=pass (signature was verified)\n header.d=arm.com;dmarc=pass action=none header.from=arm.com;", "spf=pass (sender IP is 172.205.89.229)\n smtp.mailfrom=arm.com; dkim=none (message not signed)\n header.d=none;dmarc=pass action=none header.from=arm.com;" ], "Received-SPF": [ "Pass (protection.outlook.com: domain of arm.com designates\n 4.158.2.129 as permitted sender) receiver=protection.outlook.com;\n client-ip=4.158.2.129; helo=outbound-uk1.az.dlp.m.darktrace.com; pr=C", "Pass (protection.outlook.com: domain of arm.com designates\n 172.205.89.229 as permitted sender) receiver=protection.outlook.com;\n client-ip=172.205.89.229; helo=nebula.arm.com; pr=C" ], "From": "Christopher Bazley <chris.bazley@arm.com>", "To": "<gcc-patches@gcc.gnu.org>", "Subject": "[PATCH v7 04/10] Refactor check_load_store_for_partial_vectors", "Date": "Thu, 18 Dec 2025 21:11:02 +0000", "Message-ID": "<20251218211109.3562-5-chris.bazley@arm.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20251218211109.3562-1-chris.bazley@arm.com>", "References": "<20251218211109.3562-1-chris.bazley@arm.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-EOPAttributedMessage": "1", "X-MS-TrafficTypeDiagnostic": "\n DB1PEPF0003922F:EE_|PR3PR08MB5578:EE_|DU2PEPF00028D12:EE_|GV1PR08MB7705:EE_", "X-MS-Office365-Filtering-Correlation-Id": "17b7a684-01af-4381-cca5-08de3e7a298e", "x-checkrecipientrouted": "true", "NoDisclaimer": "true", "X-MS-Exchange-SenderADCheck": "1", "X-MS-Exchange-AntiSpam-Relay": "0", "X-Microsoft-Antispam-Untrusted": "BCL:0;\n ARA:13230040|1800799024|82310400026|36860700013|376014;", "X-Microsoft-Antispam-Message-Info-Original": "\n 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", "X-Forefront-Antispam-Report-Untrusted": "CIP:172.205.89.229; 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CTRY:GB; LANG:en; SCL:1; SRV:;\n IPV:NLI; SFV:NSPM; H:outbound-uk1.az.dlp.m.darktrace.com;\n PTR:InfoDomainNonexistent; CAT:NONE;\n SFS:(13230040)(36860700013)(14060799003)(1800799024)(82310400026)(376014)(35042699022);\n DIR:OUT; SFP:1101;", "X-OriginatorOrg": "arm.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "18 Dec 2025 21:12:33.7018 (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 17b7a684-01af-4381-cca5-08de3e7a298e", "X-MS-Exchange-CrossTenant-Id": "f34e5979-57d9-4aaa-ad4d-b122a662184d", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d; Ip=[4.158.2.129];\n Helo=[outbound-uk1.az.dlp.m.darktrace.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n DU2PEPF00028D12.eurprd03.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-BeenThere": "gcc-patches@gcc.gnu.org", "X-Mailman-Version": "2.1.30", "Precedence": "list", "List-Id": "Gcc-patches mailing list <gcc-patches.gcc.gnu.org>", "List-Unsubscribe": "<https://gcc.gnu.org/mailman/options/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=unsubscribe>", "List-Archive": "<https://gcc.gnu.org/pipermail/gcc-patches/>", "List-Post": "<mailto:gcc-patches@gcc.gnu.org>", "List-Help": "<mailto:gcc-patches-request@gcc.gnu.org?subject=help>", "List-Subscribe": "<https://gcc.gnu.org/mailman/listinfo/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=subscribe>", "Errors-To": "gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org" }, "content": "Moved existing code to determine the partial vector\nstyle for a load or store into a new function\nthat will be reused for BB SLP with predicated tails.\n\ngcc/ChangeLog:\n\n\t* tree-vect-stmts.cc (vect_get_partial_vector_style): Define a\n\tnew function to get the partial vectors style supported by the\n\ttarget.\n\t(check_load_store_for_partial_vectors): Use the new function in\n\tplace of existing custom code to do the same thing.\n\n---\n gcc/tree-vect-stmts.cc | 71 ++++++++++++++++++++++++++++++++++--------\n 1 file changed, 58 insertions(+), 13 deletions(-)", "diff": "diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc\nindex 93c87f4b329..dbca9ea3af2 100644\n--- a/gcc/tree-vect-stmts.cc\n+++ b/gcc/tree-vect-stmts.cc\n@@ -1462,6 +1462,56 @@ vect_get_len (vec_info *vinfo, slp_tree slp_node, gimple_stmt_iterator *gsi,\n static tree permute_vec_elements (vec_info *, tree, tree, tree, stmt_vec_info,\n \t\t\t\t gimple_stmt_iterator *);\n \n+/* If target supports vector load/store (determined by IS_LOAD) with length for\n+ VECTYPE, return VECT_PARTIAL_VECTORS_LEN; otherwise, if it supports vector\n+ masked load/store for mode for VECTYPE, return\n+ VECT_PARTIAL_VECTORS_WHILE_ULT; otherwise, return VECT_PARTIAL_VECTORS_NONE.\n+ If load/store with length or mask is supported and ELSVALS is not null,\n+ store the possible else values in the vector it points to. Unless FACTOR\n+ is null, *FACTOR is set to the number of separate subelements that each\n+ element of VECTYPE should be split into. (This is always 1 except in the\n+ case of VECT_PARTIAL_VECTORS_LEN when the machine mode of VECTYPE can only\n+ be supported by using a length in bytes instead of a length in lanes.)\n+ */\n+static enum vect_partial_vector_style\n+vect_get_partial_vector_style (tree vectype, bool is_load,\n+\t\t\t unsigned *factor = nullptr,\n+\t\t\t vec<int> *elsvals = nullptr)\n+{\n+ machine_mode vecmode = TYPE_MODE (vectype);\n+\n+ /* TYPE_MODE tries to map vector modes that are unsupported by the target to\n+ same-sized scalar modes, so reject scalar modes here. */\n+ if (VECTOR_MODE_P (vecmode))\n+ {\n+ machine_mode mask_mode, vmode;\n+ if (get_len_load_store_mode (vecmode, is_load, nullptr, elsvals)\n+\t .exists (&vmode))\n+\t{\n+\t if (factor)\n+\t *factor = (vecmode == vmode) ? 1 : GET_MODE_UNIT_SIZE (vecmode);\n+\t return vect_partial_vectors_len;\n+\t}\n+\n+ if (factor)\n+\t*factor = 1;\n+\n+ if (targetm.vectorize.get_mask_mode (vecmode).exists (&mask_mode)\n+\t && can_vec_mask_load_store_p (vecmode, mask_mode, is_load, NULL,\n+\t\t\t\t\telsvals))\n+\t{\n+\t return vect_partial_vectors_while_ult;\n+\t}\n+ }\n+\n+ if (dump_enabled_p ())\n+ dump_printf_loc (MSG_NOTE, vect_location,\n+\t\t \"the target doesn't have the appropriate partial\"\n+\t\t \" vectorization %s for vector data type %T.\\n\",\n+\t\t is_load ? \"load\" : \"store\", vectype);\n+ return vect_partial_vectors_none;\n+}\n+\n /* Check whether a load or store statement in the loop or SLP group described by\n VINFO is possible using partial vectors. This is\n testing whether the vectorizer pass has the appropriate support,\n@@ -1627,28 +1677,23 @@ check_load_store_for_partial_vectors (vec_info *vinfo, tree vectype,\n \n poly_uint64 nunits = TYPE_VECTOR_SUBPARTS (vectype);\n poly_uint64 vf = LOOP_VINFO_VECT_FACTOR (loop_vinfo);\n- machine_mode mask_mode;\n- machine_mode vmode;\n- bool using_partial_vectors_p = false;\n- if (get_len_load_store_mode\n- (vecmode, is_load, nullptr, elsvals).exists (&vmode))\n+ unsigned factor;\n+ vect_partial_vector_style partial_vector_style\n+ = vect_get_partial_vector_style (vectype, is_load, &factor, elsvals);\n+\n+ if (partial_vector_style == vect_partial_vectors_len)\n {\n nvectors = group_memory_nvectors (group_size * vf, nunits);\n- unsigned factor = (vecmode == vmode) ? 1 : GET_MODE_UNIT_SIZE (vecmode);\n vect_record_len (vinfo, slp_node, nvectors, vectype, factor);\n- using_partial_vectors_p = true;\n }\n- else if (targetm.vectorize.get_mask_mode (vecmode).exists (&mask_mode)\n-\t && can_vec_mask_load_store_p (vecmode, mask_mode, is_load, NULL,\n-\t\t\t\t\t elsvals))\n+ else if (partial_vector_style == vect_partial_vectors_while_ult)\n {\n nvectors = group_memory_nvectors (group_size * vf, nunits);\n vect_record_mask (vinfo, slp_node, nvectors, vectype, scalar_mask);\n- using_partial_vectors_p = true;\n }\n-\n- if (!using_partial_vectors_p)\n+ else\n {\n+ gcc_assert (partial_vector_style == vect_partial_vectors_none);\n if (dump_enabled_p ())\n \tdump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,\n \t\t\t \"can't operate on partial vectors because the\"\n", "prefixes": [ "v7", "04/10" ] }