[{"id":1771958,"web_url":"http://patchwork.ozlabs.org/comment/1771958/","msgid":"","list_archive_url":null,"date":"2017-09-20T15:02:27","subject":"Re: Add copy_rtx call to RTL loop unroller","submitter":{"id":1765,"url":"http://patchwork.ozlabs.org/api/people/1765/","name":"Richard Biener","email":"richard.guenther@gmail.com"},"content":"On September 20, 2017 2:27:49 PM GMT+02:00, Richard Sandiford wrote:\n>This is needed if the step is an unshared constant, like many\n>(const ...)s are. Without this patch, libgfortran would fail\n>to build for SVE.\n>\n>Tested on aarch64-linux-gnu, x86_64-linux-gnu and\n>powerpc64le-linus-gnu.\n>OK to install?\n\nOK. \n\nRichard. \n\n>Richard\n>\n>\n>2017-09-20 Richard Sandiford \n>\t Alan Hayward \n>\t David Sherwood \n>\n>gcc/\n>\t* loop-unroll.c (split_iv): Call copy_rtx on the step.\n>\n>Index: gcc/loop-unroll.c\n>===================================================================\n>--- gcc/loop-unroll.c\t2017-08-30 12:13:52.715828832 +0100\n>+++ gcc/loop-unroll.c\t2017-09-20 13:26:14.451718893 +0100\n>@@ -1731,7 +1731,8 @@ split_iv (struct iv_to_split *ivts, rtx_\n> else\n> {\n> incr = simplify_gen_binary (MULT, mode,\n>-\t\t\t\t ivts->step, gen_int_mode (delta, mode));\n>+\t\t\t\t copy_rtx (ivts->step),\n>+\t\t\t\t gen_int_mode (delta, mode));\n> expr = simplify_gen_binary (PLUS, GET_MODE (ivts->base_var),\n> \t\t\t\t ivts->base_var, incr);\n> }","headers":{"Return-Path":"","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-462607-incoming=patchwork.ozlabs.org@gcc.gnu.org;\n\treceiver=)","ozlabs.org; dkim=pass (1024-bit key;\n\tunprotected) header.d=gcc.gnu.org header.i=@gcc.gnu.org\n\theader.b=\"pGGvuqzq\"; 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 3xy2zs37PJz9sNr\n\tfor ;\n\tThu, 21 Sep 2017 01:03:04 +1000 (AEST)","(qmail 97995 invoked by alias); 20 Sep 2017 15:02:36 -0000","(qmail 97904 invoked by uid 89); 20 Sep 2017 15:02:35 -0000","from mail-wm0-f49.google.com (HELO mail-wm0-f49.google.com)\n\t(74.125.82.49) by sourceware.org\n\t(qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP;\n\tWed, 20 Sep 2017 15:02:33 +0000","by mail-wm0-f49.google.com with SMTP id v142so8028343wmv.5 for\n\t; Wed, 20 Sep 2017 08:02:33 -0700 (PDT)","from android-97b5c0ce9bfced28.fritz.box\n\t(p5494E583.dip0.t-ipconnect.de. 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