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GET /api/patches/2195026/?format=api
{ "id": 2195026, "url": "http://patchwork.ozlabs.org/api/patches/2195026/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/20260210113104.60335-5-chris.bazley@arm.com/", "project": { "id": 17, "url": "http://patchwork.ozlabs.org/api/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, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260210113104.60335-5-chris.bazley@arm.com>", "list_archive_url": null, "date": "2026-02-10T11:30:57", "name": "[v9,04/11] Refactor check_load_store_for_partial_vectors", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "d32efa0f352faac718d1fd7beb3e927d79e266cf", "submitter": { "id": 89471, "url": "http://patchwork.ozlabs.org/api/people/89471/?format=api", "name": "Christopher Bazley", "email": "Chris.Bazley@arm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/20260210113104.60335-5-chris.bazley@arm.com/mbox/", "series": [ { "id": 491659, "url": "http://patchwork.ozlabs.org/api/series/491659/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=491659", "date": "2026-02-10T11:30:56", "name": "Extend BB SLP vectorization to use predicated tails", "version": 9, "mbox": "http://patchwork.ozlabs.org/series/491659/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2195026/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2195026/checks/", "tags": {}, "related": [], "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=krj5pmJY;\n\tdkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com\n header.a=rsa-sha256 header.s=selector1 header.b=krj5pmJY;\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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helo=nebula.arm.com; pr=C" ], "From": "Christopher Bazley <chris.bazley@arm.com>", "To": "<gcc-patches@gcc.gnu.org>", "CC": "<rguenther@suse.de>, <Tamar.Christina@arm.com>,\n <rdsandiford@googlemail.com>, Christopher Bazley <chris.bazley@arm.com>", "Subject": "[PATCH v9 04/11] Refactor check_load_store_for_partial_vectors", "Date": "Tue, 10 Feb 2026 11:30:57 +0000", "Message-ID": "<20260210113104.60335-5-chris.bazley@arm.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20260210113104.60335-1-chris.bazley@arm.com>", "References": "<20260210113104.60335-1-chris.bazley@arm.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-EOPAttributedMessage": "1", "X-MS-TrafficTypeDiagnostic": "\n DB1PEPF000509F9:EE_|AM7PR08MB5397:EE_|AM4PEPF00025F9C:EE_|VI0PR08MB11407:EE_", "X-MS-Office365-Filtering-Correlation-Id": "ea7a19b5-d980-4869-6cdf-08de689824ac", "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|82310400026|1800799024|376014|36860700013;", "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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Ip=[4.158.2.129];\n Helo=[outbound-uk1.az.dlp.m.darktrace.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n AM4PEPF00025F9C.EURPRD83.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 56ae35ff724..d084e9f6a8b 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 ? LOOP_VINFO_VECT_FACTOR (loop_vinfo) : 1;\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": [ "v9", "04/11" ] }