From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yb1-xb2b.google.com (mail-yb1-xb2b.google.com [IPv6:2607:f8b0:4864:20::b2b]) by sourceware.org (Postfix) with ESMTPS id 1D06A3882642 for ; Sat, 15 Jun 2024 00:09:28 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 1D06A3882642 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 1D06A3882642 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=2607:f8b0:4864:20::b2b ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1718410169; cv=none; b=ZSNayzNf4LaBHwXNty1yNBwpB1O5On7blmW1N9rbYTWU/kh2IRYhiCtpI0BBpJrsA4vjpvMeAlN+M1v9bzNbFvBrsrxNLn8cZ0Ezoi5ANL32dcUoFMIbk4WdJEIFrkHF4Qusra3cg5PsyGnGbbD+4pn4tmZOzXDQcxeEBphmTuo= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1718410169; c=relaxed/simple; bh=Zlp9d31WvaAqo4I/6MOC3l3kY1/JLRSBqcB+FM8fw34=; h=DKIM-Signature:MIME-Version:From:Date:Message-ID:Subject:To; b=DKWthNoHRkIhvCU4lhjDnLsAlSy9yQrMGj3nL/Iqjaw/lRjlALQAKw3OC/NY7OvkFPNX6fkzjoM1oFYtYRfjoZphUP2ipYU2lynpu4ZLccQO68LmtnPobM+sXD3UdUaUNm/VbCL4eHvvfoZHvpCsUbVew05jD02VwNXSHb0TTjk= ARC-Authentication-Results: i=1; server2.sourceware.org Received: by mail-yb1-xb2b.google.com with SMTP id 3f1490d57ef6-dff0067a263so3008229276.0 for ; Fri, 14 Jun 2024 17:09:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1718410167; x=1719014967; darn=gcc.gnu.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=3NFdw4f0YoQvEs0TxtYI7Jsx6hB2N1PINXvt/WJIcUA=; b=F8H081Chab/nHKzDRSVDq1qSbXXJl9yZEK/TwH/8LFLJNaWfUXNMh9EEzEpVNsEGw8 isDU5Rbn/Kc4z9PEFmHLm0jBqHN3KkdS6PXquBHZFIdt6gxGny8hzK9IQfUG4vgxZpSk +y9+AKQuhRxjW91e1g+b0rJ2DrW3SklFy7/Al0Xo/k/Yn7Hd4TerRGExpMZRQhdqeIYu +at4QXoOS7REwH3TIfFqU742x8D/uQVTbGYG2pVVrrcXBdXqGr+EQtdsDHc3aBn0Yp/Q p53Ds1oVLJFJo6Tj21j+CrCJlfWSaZC0JDSByQMH6EGq0c6hD7wJmRVZ7COqBqAuRYaV ZIXA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718410167; x=1719014967; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3NFdw4f0YoQvEs0TxtYI7Jsx6hB2N1PINXvt/WJIcUA=; b=nMb1bNvJds6Do7wcNgwhYW6tj+4uONVSywIaXrJPV6XX5SjTXN8HErb9WIeOHNnloQ 5LxKqM/mVepwD6duXpcXBT6SaqHhwC4fQTfdhfyccVp5yIyzgt2J7FycsVjtQXBN71hj lMd45dNrCE7uRfpSxIx6z9RpO2qtis2T5noDjXrq6B8ViYcofUlU/2Pe9vlU+cVxK+hk hmLmU9Co2DsmXtshnMaeY8LZYaW3REAuB0o+TYuikCzrCbac/Tz9Nj3g4nw+lMaruQhF lp0JZeXYS4syHYoKChmVah8I0kCW+vjP77g96lM1AMMjoNXmxFrJdIbmSADQWIaQk5/5 OcPw== X-Gm-Message-State: AOJu0YyI0VSLhHjJE4XA0pjlhEYLf2bUhsKnfZ/J14FkeMqk0uRlik4F sz0q5gVEZhLyB2Umxmy8NhP5MhkS4vCkBmgxSa/a5mK/jZ8gQNvpJXnO/lI+bjnDS7lLYyMXAyT tsw9Hflx31q9PzLE1gYuVD39cwTGr4FIs X-Google-Smtp-Source: AGHT+IE453ZVhoBkzOzSnpU0ZpcPaiSEFLYeWY0EKvwZHLGf1AZg0hNxHvMVrqqIUcTHJq10OVLIAHV2kCXYeG94PK0= X-Received: by 2002:a25:e0c2:0:b0:df4:9a10:4e12 with SMTP id 3f1490d57ef6-dff15470773mr3972527276.57.1718410167202; Fri, 14 Jun 2024 17:09:27 -0700 (PDT) MIME-Version: 1.0 References: <20240609134929.317546-1-xry111@xry111.site> In-Reply-To: <20240609134929.317546-1-xry111@xry111.site> From: YunQiang Su Date: Sat, 15 Jun 2024 08:09:15 +0800 Message-ID: Subject: Re: [PATCH] LoongArch: Use bstrins for "value & (-1u << const)" To: Xi Ruoyao Cc: gcc-patches@gcc.gnu.org, chenglulu , i@xen0n.name, xuchenghua@loongson.cn Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_00,BODY_8BITS,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: Xi Ruoyao =E4=BA=8E2024=E5=B9=B46=E6=9C=889=E6=97=A5= =E5=91=A8=E6=97=A5 21:50=E5=86=99=E9=81=93=EF=BC=9A > > A move/bstrins pair is as fast as a (addi.w|lu12i.w|lu32i.d|lu52i.d)/and > pair, and twice fast as a srli/slli pair. When the src reg and the dst Just want to know that why not adjust the RTX cost of bstrins vs srli/slli? It may benefit more cases. > reg happens to be the same, the move instruction can be optimized away. >