{"id":2230356,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2230356/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/patch/972898fc-8794-4b08-bfe1-882c9853f6bd@redhat.com/","project":{"id":17,"url":"http://patchwork.ozlabs.org/api/1.1/projects/17/?format=json","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":"<972898fc-8794-4b08-bfe1-882c9853f6bd@redhat.com>","date":"2026-04-29T16:11:31","name":"[pushed,LRA] : Fix a bug in finding conflicts in rematerialization","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"4873943bb49dd7cf470dd90189a830a6f94695ac","submitter":{"id":4455,"url":"http://patchwork.ozlabs.org/api/1.1/people/4455/?format=json","name":"Vladimir Makarov","email":"vmakarov@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/gcc/patch/972898fc-8794-4b08-bfe1-882c9853f6bd@redhat.com/mbox/","series":[{"id":502104,"url":"http://patchwork.ozlabs.org/api/1.1/series/502104/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/list/?series=502104","date":"2026-04-29T16:11:31","name":"[pushed,LRA] : Fix a bug in finding conflicts in rematerialization","version":1,"mbox":"http://patchwork.ozlabs.org/series/502104/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2230356/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2230356/checks/","tags":{},"headers":{"Return-Path":"","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=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=dYcEo28W;\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; helo=vm01.sourceware.org;\n envelope-from=gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org;\n receiver=patchwork.ozlabs.org)","sourceware.org;\n\tdkim=pass (1024-bit key,\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=dYcEo28W","sourceware.org; dmarc=pass (p=quarantine dis=none)\n header.from=redhat.com","sourceware.org; spf=pass smtp.mailfrom=redhat.com","server2.sourceware.org;\n arc=none smtp.remote-ip=170.10.129.124"],"Received":["from vm01.sourceware.org (vm01.sourceware.org [38.145.34.32])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g5Ml70JXkz1yHZ\n\tfor ; Thu, 30 Apr 2026 02:12:19 +1000 (AEST)","from vm01.sourceware.org (localhost [127.0.0.1])\n\tby sourceware.org (Postfix) with ESMTP id 3496E4BBC0C6\n\tfor ; Wed, 29 Apr 2026 16:12:17 +0000 (GMT)","from us-smtp-delivery-124.mimecast.com\n (us-smtp-delivery-124.mimecast.com [170.10.129.124])\n by sourceware.org (Postfix) with ESMTP id B82904B99F77\n for ; Wed, 29 Apr 2026 16:11:36 +0000 (GMT)","from mail-qk1-f200.google.com (mail-qk1-f200.google.com\n [209.85.222.200]) by relay.mimecast.com with ESMTP with STARTTLS\n (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id\n us-mta-625-Fjii6FAJNXm7pGXDb8_Ogw-1; Wed, 29 Apr 2026 12:11:34 -0400","by mail-qk1-f200.google.com with SMTP id\n af79cd13be357-8d654ade33aso228574385a.1\n for ; Wed, 29 Apr 2026 09:11:33 -0700 (PDT)","from [192.168.0.111] (192-0-141-76.cpe.teksavvy.com. 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Makarov \nDate: Wed Apr 29 08:50:32 2026 -0400\n\n [LRA]: Fix a bug in finding conflicts in rematerialization\n \n In LRA rematerialization wrong mode is used to find register conflicts. It\n can result in wrong rematerialization. The patch fixes this.\n \n gcc/ChangeLog:\n \n * lra-remat.cc (reg_overlap_for_remat_p): Use the right mode for\n regno2.\n\ndiff --git a/gcc/lra-remat.cc b/gcc/lra-remat.cc\nindex c7ae0f7b8c1..c4da3f75e59 100644\n--- a/gcc/lra-remat.cc\n+++ b/gcc/lra-remat.cc\n@@ -697,7 +697,7 @@ reg_overlap_for_remat_p (lra_insn_reg *reg, rtx_insn *insn)\n \tif (regno2 >= FIRST_PSEUDO_REGISTER)\n \t nregs2 = 1;\n \telse\n-\t nregs2 = hard_regno_nregs (regno2, reg->biggest_mode);\n+\t nregs2 = hard_regno_nregs (regno2, reg2->biggest_mode);\n \n \tif ((regno2 + nregs2 - 1 >= regno && regno2 < regno + nregs)\n \t || (regno + nregs - 1 >= regno2 && regno < regno2 + nregs2))\n","prefixes":["pushed","LRA"]}