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GET /api/1.2/patches/814834/?format=api
{ "id": 814834, "url": "http://patchwork.ozlabs.org/api/1.2/patches/814834/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/3690602f9779a8e66f5744ff22eb2bbd@ispras.ru/", "project": { "id": 17, "url": "http://patchwork.ozlabs.org/api/1.2/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": "<3690602f9779a8e66f5744ff22eb2bbd@ispras.ru>", "list_archive_url": null, "date": "2017-09-18T09:08:10", "name": "[RFC] ipa: fix dumping with deleted multiversioning nodes", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "04c2537e42d95955151d45c871894055aea4216e", "submitter": { "id": 70324, "url": "http://patchwork.ozlabs.org/api/1.2/people/70324/?format=api", "name": "Evgeny Kudryashov", "email": "kudryashov@ispras.ru" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/3690602f9779a8e66f5744ff22eb2bbd@ispras.ru/mbox/", "series": [ { "id": 3594, "url": "http://patchwork.ozlabs.org/api/1.2/series/3594/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=3594", "date": "2017-09-18T09:08:10", "name": "[RFC] ipa: fix dumping with deleted multiversioning nodes", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/3594/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/814834/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/814834/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<gcc-patches-return-462360-incoming=patchwork.ozlabs.org@gcc.gnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": [ "patchwork-incoming@bilbo.ozlabs.org", "mailing list gcc-patches@gcc.gnu.org" ], "Authentication-Results": [ "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=gcc.gnu.org\n\t(client-ip=209.132.180.131; helo=sourceware.org;\n\tenvelope-from=gcc-patches-return-462360-incoming=patchwork.ozlabs.org@gcc.gnu.org;\n\treceiver=<UNKNOWN>)", "ozlabs.org; dkim=pass (1024-bit key;\n\tunprotected) header.d=gcc.gnu.org header.i=@gcc.gnu.org\n\theader.b=\"Jy3YI4hg\"; dkim-atps=neutral", "sourceware.org; auth=none" ], "Received": [ "from sourceware.org (server1.sourceware.org [209.132.180.131])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xwgCd5Dl1z9s7c\n\tfor <incoming@patchwork.ozlabs.org>;\n\tMon, 18 Sep 2017 19:08:27 +1000 (AEST)", "(qmail 68679 invoked by alias); 18 Sep 2017 09:08:18 -0000", "(qmail 66672 invoked by uid 89); 18 Sep 2017 09:08:16 -0000", "from mail.ispras.ru (HELO mail.ispras.ru) (83.149.199.45) by\n\tsourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP;\n\tMon, 18 Sep 2017 09:08:13 +0000", "from mail.ispras.ru (localhost [127.0.0.1])\tby mail.ispras.ru\n\t(Postfix) with ESMTPSA id 839A454006C;\n\tMon, 18 Sep 2017 12:08:10 +0300 (MSK)" ], "DomainKey-Signature": "a=rsa-sha1; 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boundary=\"=_fd14918a31aee7b5407d9152e9a112d9\"", "Date": "Mon, 18 Sep 2017 12:08:10 +0300", "From": "Evgeny Kudryashov <kudryashov@ispras.ru>", "To": "gcc-patches@gcc.gnu.org", "Cc": "=?utf-8?q?Martin_Li=C5=A1ka?= <mliska@suse.cz>", "Subject": "[RFC][PATCH] ipa: fix dumping with deleted multiversioning nodes", "Message-ID": "<3690602f9779a8e66f5744ff22eb2bbd@ispras.ru>", "X-Sender": "kudryashov@ispras.ru", "User-Agent": "Roundcube Webmail/1.1.2", "X-IsSubscribed": "yes" }, "content": "Hello,\n\nThe code below causes an internal compiler error in cc1plus (trunk on \nx86-64) if it is compiled with -fdump-ipa-cgraph.\n\nint foo () __attribute__ ((target (\"default\")));\nint foo () __attribute__ ((target (\"sse4.2\")));\n\n__attribute__ ((target (\"sse4.2\")))\nint foo ()\n{\n return 1;\n}\n\nThe error occurs in cgraph_node::dump (gcc/cgraph.c:2065), particularly, \nin the following fragment:\n\ncgraph_function_version_info *vi = function_version ();\nif (vi != NULL)\n {\n fprintf (f, \" Version info: \");\n if (vi->prev != NULL)\n {\n fprintf (f, \"prev: \");\n fprintf (f, \"%s \", vi->prev->this_node->dump_asm_name ());\n }\n if (vi->next != NULL)\n {\n fprintf (f, \"next: \");\n fprintf (f, \"%s \", vi->next->this_node->dump_asm_name ());\n }\n if (vi->dispatcher_resolver != NULL_TREE)\n fprintf (f, \"dispatcher: %s\",\n lang_hooks.decl_printable_name (vi->dispatcher_resolver, \n2));\n\n fprintf (f, \"\\n\");\n }\n\n\nThe expression \"vi->{prev,next}->this_node\" can be null if it is a \nversion of an unused symbol that was removed.\n\nIs it intentional that removing a cgraph node does not also remove \nversions?\n\nAs a solution I suggest to delete the version of the node too during \nnode removal.\n\nRegards,\nEvgeny.\n\n * cgraph.c (delete_function_version): New, broken out from...\n (cgraph_node::delete_function_version): ...here. Rename to\n cgraph_node::delete_function_version_by_decl. Update all uses.\n (cgraph_node::remove): Call delete_function_version.", "diff": "diff --git a/gcc/cgraph.c b/gcc/cgraph.c\nindex 8bffdec..3d0cefb 100644\n--- a/gcc/cgraph.c\n+++ b/gcc/cgraph.c\n@@ -190,30 +190,34 @@ cgraph_node::insert_new_function_version (void)\n return version_info_node;\n }\n \n-/* Remove the cgraph_function_version_info and cgraph_node for DECL. This\n- DECL is a duplicate declaration. */\n-void\n-cgraph_node::delete_function_version (tree decl)\n+/* Remove the cgraph_function_version_info node given by DECL_V. */\n+static void\n+delete_function_version (cgraph_function_version_info *decl_v)\n {\n- cgraph_node *decl_node = cgraph_node::get (decl);\n- cgraph_function_version_info *decl_v = NULL;\n-\n- if (decl_node == NULL)\n- return;\n-\n- decl_v = decl_node->function_version ();\n-\n if (decl_v == NULL)\n return;\n \n if (decl_v->prev != NULL)\n- decl_v->prev->next = decl_v->next;\n+ decl_v->prev->next = decl_v->next;\n \n if (decl_v->next != NULL)\n decl_v->next->prev = decl_v->prev;\n \n if (cgraph_fnver_htab != NULL)\n cgraph_fnver_htab->remove_elt (decl_v);\n+}\n+\n+/* Remove the cgraph_function_version_info and cgraph_node for DECL. This\n+ DECL is a duplicate declaration. */\n+void\n+cgraph_node::delete_function_version_by_decl (tree decl)\n+{\n+ cgraph_node *decl_node = cgraph_node::get (decl);\n+\n+ if (decl_node == NULL)\n+ return;\n+\n+ delete_function_version (decl_node->function_version ());\n \n decl_node->remove ();\n }\n@@ -1844,6 +1848,7 @@ cgraph_node::remove (void)\n remove_callers ();\n remove_callees ();\n ipa_transforms_to_apply.release ();\n+ delete_function_version (function_version ());\n \n /* Incremental inlining access removed nodes stored in the postorder list.\n */\ndiff --git a/gcc/cgraph.h b/gcc/cgraph.h\nindex c668b37..1303db0 100644\n--- a/gcc/cgraph.h\n+++ b/gcc/cgraph.h\n@@ -1272,7 +1272,7 @@ public:\n \n /* Remove the cgraph_function_version_info and cgraph_node for DECL. This\n DECL is a duplicate declaration. */\n- static void delete_function_version (tree decl);\n+ static void delete_function_version_by_decl (tree decl);\n \n /* Add the function FNDECL to the call graph.\n Unlike finalize_function, this function is intended to be used\ndiff --git a/gcc/cp/decl.c b/gcc/cp/decl.c\nindex 858747e..50fa1ba 100644\n--- a/gcc/cp/decl.c\n+++ b/gcc/cp/decl.c\n@@ -2566,7 +2566,7 @@ next_arg:;\n DECL_FUNCTION_VERSIONED (newdecl) = 1;\n /* newdecl will be purged after copying to olddecl and is no longer\n a version. */\n- cgraph_node::delete_function_version (newdecl);\n+ cgraph_node::delete_function_version_by_decl (newdecl);\n }\n \n if (TREE_CODE (newdecl) == FUNCTION_DECL)\n", "prefixes": [ "RFC" ] }