[{"id":3675640,"web_url":"http://patchwork.ozlabs.org/comment/3675640/","msgid":"","list_archive_url":null,"date":"2026-04-10T03:48:30","subject":"Re: [PATCH v2] rs6000: Add -mcpu=future support and built-in gating\n infrastructure","submitter":{"id":73991,"url":"http://patchwork.ozlabs.org/api/people/73991/","name":"Michael Meissner","email":"meissner@linux.ibm.com"},"content":"On Wed, Apr 08, 2026 at 10:52:44PM +0530, Kishan Parmar wrote:\n> Hello All,\n> \n> Changes from v1:\n> \t- Add missing ChangeLog info of new testcases.\n> \n> Thank you,\n> Kishan\n> \n> This patch introduces support for the -mcpu=future option, intended to\n> enable experimental processor features that may or may not be included\n> in future Power processors. The option serves as a placeholder for\n> development and evaluation purposes, and may be renamed if a\n> corresponding processor is defined.\n> \n> In addition, this change adds support for gating rs6000 built-ins using a\n> new target predicate \"future\", corresponding to -mcpu=future. This\n> extends rs6000-gen-builtins.cc and rs6000-builtin.cc to recognize\n> [future] as a valid predicate, allowing new built-ins defined in .bif\n> files to be conditionally enabled.\n> \n> Bootstrapped and Regtested on Power10 little-endian system, using the\n> --with-cpu=future configuration option.\n\nThis looks ok, when GCC 17 opens up you can apply it to the main\nbranch. After an appropriate waiting period after GCC 16.1 ships, you\ncan back port it to GCC 16.","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 (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=KEHfZilh;\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; 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 (2048-bit key,\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=KEHfZilh","sourceware.org;\n dmarc=none (p=none dis=none) header.from=linux.ibm.com","sourceware.org; spf=pass smtp.mailfrom=linux.ibm.com","server2.sourceware.org;\n arc=none smtp.remote-ip=148.163.156.1"],"Received":["from vm01.sourceware.org (vm01.sourceware.org\n [IPv6:2620:52:6:3111::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 4fsN8P1jzhz1yGb\n\tfor ; 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