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GET /api/1.1/patches/2222010/?format=api
{ "id": 2222010, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2222010/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/20260410150553.156795-2-muhammad.kamran@arm.com/", "project": { "id": 17, "url": "http://patchwork.ozlabs.org/api/1.1/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": "<20260410150553.156795-2-muhammad.kamran@arm.com>", "date": "2026-04-10T15:05:51", "name": "[v4,1/3] aarch64: Fix crash in add<mode>3_carryinC due to wide_int precision mismatch", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "58911c69def42aad54b3d7cd520590fbcaa14333", "submitter": { "id": 92852, "url": "http://patchwork.ozlabs.org/api/1.1/people/92852/?format=api", "name": "Muhammad Kamran", "email": "muhammad.kamran@arm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/20260410150553.156795-2-muhammad.kamran@arm.com/mbox/", "series": [ { "id": 499479, "url": "http://patchwork.ozlabs.org/api/1.1/series/499479/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=499479", "date": "2026-04-10T15:05:50", "name": "aarch64: Implement uaddc/usubc expansion and carry/borrow round-trip cleanup", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/499479/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2222010/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2222010/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=hikuiqg9;\n\tdkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com\n header.a=rsa-sha256 header.s=selector1 header.b=hikuiqg9;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=2620:52:6:3111::32; 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helo=nebula.arm.com; pr=C" ], "From": "Muhammad Kamran <muhammad.kamran@arm.com>", "To": "<gcc-patches@gcc.gnu.org>", "CC": "Richard Earnshaw <richard.earnshaw@arm.com>, Tamar Christina\n <tamar.christina@arm.com>, Kyrylo Tkachov <ktkachov@nvidia.com>, \"Alice\n Carlotti\" <alice.carlotti@arm.com>, Alex Coplan <alex.coplan@arm.com>,\n \"Andrew Pinski\" <andrew.pinski@oss.qualcomm.com>, Wilco Dijkstra\n <wilco.dijkstra@arm.com>, Muhammad Kamran <muhammad.kamran@arm.com>", "Subject": "[PATCH v4 1/3] aarch64: Fix crash in add<mode>3_carryinC due to\n wide_int precision mismatch", "Date": "Fri, 10 Apr 2026 15:05:51 +0000", "Message-ID": "<20260410150553.156795-2-muhammad.kamran@arm.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20260410150553.156795-1-muhammad.kamran@arm.com>", "References": "<20260410150553.156795-1-muhammad.kamran@arm.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-EOPAttributedMessage": "1", "X-MS-TrafficTypeDiagnostic": "\n AM4PEPF00027A69:EE_|VI0PR08MB11567:EE_|DB1PEPF000509F5:EE_|PAXPR08MB6528:EE_", "X-MS-Office365-Filtering-Correlation-Id": "455ee6f2-3000-4f21-8b57-08de9712dfe3", "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|36860700016|376014|56012099003|18002099003|22082099003;", "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 DB1PEPF000509F5.eurprd02.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": "The add<mode>3_carryinC expander constructed a constant using\n\noperands[6] = immed_wide_int_const (wi::shwi (1, <DWI>mode)\n\t\t\t\t << GET_MODE_BITSIZE (<MODE>mode),\n\t\t\t\t TImode);\n\nWhich, in case of SImode expands to:\n\noperands[6] = immed_wide_int_const (wi::shwi (1, DImode)\n\t\t\t\t << GET_MODE_BITSIZE (SImode),\n\t\t\t\t TImode);\n\nThis triggers assert in immed_wide_int_const_1 as truncation is\nallowed, but not extension.\n\nFix by constructing the constant in <DWI>mode\n\ngcc/ChangeLog:\n\n\t* config/aarch64/aarch64.md (add<mode>3_carryinC):\n\tConstruct operands[6] in <DWI>mode.\n---\n gcc/config/aarch64/aarch64.md | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)", "diff": "diff --git a/gcc/config/aarch64/aarch64.md b/gcc/config/aarch64/aarch64.md\nindex e44b1cd9eef..744acac0290 100644\n--- a/gcc/config/aarch64/aarch64.md\n+++ b/gcc/config/aarch64/aarch64.md\n@@ -3350,7 +3350,7 @@ (define_expand \"add<mode>3_carryinC\"\n operands[5] = gen_rtx_LTU (<MODE>mode, ccin, const0_rtx);\n operands[6] = immed_wide_int_const (wi::shwi (1, <DWI>mode)\n \t\t\t\t << GET_MODE_BITSIZE (<MODE>mode),\n-\t\t\t\t TImode);\n+\t\t\t\t <DWI>mode);\n })\n \n (define_insn \"*add<mode>3_carryinC_zero\"\n", "prefixes": [ "v4", "1/3" ] }