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GET /api/patches/1475749/?format=api
{ "id": 1475749, "url": "http://patchwork.ozlabs.org/api/patches/1475749/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20210508014802.892561-40-richard.henderson@linaro.org/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20210508014802.892561-40-richard.henderson@linaro.org>", "list_archive_url": null, "date": "2021-05-08T01:47:29", "name": "[39/72] softfloat: Use add192 in mul128To256", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "8bd19c19c1f546868f08eeb9b20a3862749892c9", "submitter": { "id": 72104, "url": "http://patchwork.ozlabs.org/api/people/72104/?format=api", "name": "Richard Henderson", "email": "richard.henderson@linaro.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20210508014802.892561-40-richard.henderson@linaro.org/mbox/", "series": [ { "id": 242770, "url": "http://patchwork.ozlabs.org/api/series/242770/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=242770", "date": "2021-05-08T01:46:53", "name": "Convert floatx80 and float128 to FloatParts", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/242770/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/1475749/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/1475749/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=<UNKNOWN>)", "ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=tijmRvN3;\n\tdkim-atps=neutral" ], "Received": [ "from lists.gnu.org (lists.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 4FcWP220K0z9sWp\n\tfor <incoming@patchwork.ozlabs.org>; Sat, 8 May 2021 12:24:54 +1000 (AEST)", "from localhost ([::1]:52922 helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>)\n\tid 1lfCeC-0000XR-0G\n\tfor incoming@patchwork.ozlabs.org; Fri, 07 May 2021 22:24:52 -0400", "from eggs.gnu.org ([2001:470:142:3::10]:40998)\n by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <richard.henderson@linaro.org>)\n id 1lfC5E-0004pG-3m\n for qemu-devel@nongnu.org; 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a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20161025;\n h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to\n :references:mime-version:content-transfer-encoding;\n bh=MnGbP0t9ipMuFDDfgVLV3xJxRcipksJ9kWE5+MnyCZM=;\n b=dPdktfxHNM9aBYkhE/dusScA4avpLFc6PkcZy1GUEw4SNfd8DEZ74524ayt9yoMcOi\n 2Uda5znABO3Sm1aWrFS4UnKoOZ6FhYgYh/eKEpgg8Ffg45FP7LTjAiTfkg7qW/XHNL1q\n 1Y9v999AdVcaGzVhSS06OtK3tamoc7OxfZvrbrxzGViJd648wzirkmWZM74/xB5P6LnJ\n /PvRwH5S+0k79U43r2Tdxhhzrj04wFxPGUehmqQKe2lWZqRZctJtdvD2yfV5LMuvuRBW\n u5f0+JhXLBN44M7GgmSMcW3nUb7+YbOQGPWl4psEFZp19Rh7HTKn/nOBxBtkSLID28uh\n nAKA==", "X-Gm-Message-State": "AOAM531q6XXV3fvr92sU7spIeL4NRQWPGfJuK6jCDV9oBMrMbu6HcLPj\n 4v+vcOGOfup1K5jX5hwM0nLYjX6emVLPVg==", "X-Google-Smtp-Source": "\n ABdhPJw0gFDm1v5eqyaa2iwxpbBqISPGXG+/AWCv8KIygkGQOjkRm6dP/TKWCyUZxgCVL9+GHY5x0w==", "X-Received": "by 2002:a17:903:230a:b029:ee:a909:4f92 with SMTP id\n d10-20020a170903230ab02900eea9094f92mr13467728plh.44.1620438508939;\n Fri, 07 May 2021 18:48:28 -0700 (PDT)", "From": "Richard Henderson <richard.henderson@linaro.org>", "To": "qemu-devel@nongnu.org", "Subject": "[PATCH 39/72] softfloat: Use add192 in mul128To256", "Date": "Fri, 7 May 2021 18:47:29 -0700", "Message-Id": "<20210508014802.892561-40-richard.henderson@linaro.org>", "X-Mailer": "git-send-email 2.25.1", "In-Reply-To": "<20210508014802.892561-1-richard.henderson@linaro.org>", "References": "<20210508014802.892561-1-richard.henderson@linaro.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=2607:f8b0:4864:20::62f;\n envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62f.google.com", "X-Spam_score_int": "-20", "X-Spam_score": "-2.1", "X-Spam_bar": "--", "X-Spam_report": "(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=ham autolearn_force=no", "X-Spam_action": "no action", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.23", "Precedence": "list", "List-Id": "<qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Cc": "alex.bennee@linaro.org, david@redhat.com", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "\"Qemu-devel\"\n <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>" }, "content": "We can perform the operation in 6 total adds instead of 8.\n\nSigned-off-by: Richard Henderson <richard.henderson@linaro.org>\n---\n include/fpu/softfloat-macros.h | 37 +++++++++++-----------------------\n 1 file changed, 12 insertions(+), 25 deletions(-)", "diff": "diff --git a/include/fpu/softfloat-macros.h b/include/fpu/softfloat-macros.h\nindex f6dfbe108d..76327d844d 100644\n--- a/include/fpu/softfloat-macros.h\n+++ b/include/fpu/softfloat-macros.h\n@@ -511,34 +511,21 @@ static inline void\n | the locations pointed to by `z0Ptr', `z1Ptr', `z2Ptr', and `z3Ptr'.\n *----------------------------------------------------------------------------*/\n \n-static inline void\n- mul128To256(\n- uint64_t a0,\n- uint64_t a1,\n- uint64_t b0,\n- uint64_t b1,\n- uint64_t *z0Ptr,\n- uint64_t *z1Ptr,\n- uint64_t *z2Ptr,\n- uint64_t *z3Ptr\n- )\n+static inline void mul128To256(uint64_t a0, uint64_t a1,\n+ uint64_t b0, uint64_t b1,\n+ uint64_t *z0Ptr, uint64_t *z1Ptr,\n+ uint64_t *z2Ptr, uint64_t *z3Ptr)\n {\n- uint64_t z0, z1, z2, z3;\n- uint64_t more1, more2;\n+ uint64_t z0, z1, z2;\n+ uint64_t m0, m1, m2, n1, n2;\n \n- mul64To128( a1, b1, &z2, &z3 );\n- mul64To128( a1, b0, &z1, &more2 );\n- add128( z1, more2, 0, z2, &z1, &z2 );\n- mul64To128( a0, b0, &z0, &more1 );\n- add128( z0, more1, 0, z1, &z0, &z1 );\n- mul64To128( a0, b1, &more1, &more2 );\n- add128( more1, more2, 0, z2, &more1, &z2 );\n- add128( z0, z1, 0, more1, &z0, &z1 );\n- *z3Ptr = z3;\n- *z2Ptr = z2;\n- *z1Ptr = z1;\n- *z0Ptr = z0;\n+ mul64To128(a1, b0, &m1, &m2);\n+ mul64To128(a0, b1, &n1, &n2);\n+ mul64To128(a1, b1, &z2, z3Ptr);\n+ mul64To128(a0, b0, &z0, &z1);\n \n+ add192( 0, m1, m2, 0, n1, n2, &m0, &m1, &m2);\n+ add192(m0, m1, m2, z0, z1, z2, z0Ptr, z1Ptr, z2Ptr);\n }\n \n /*----------------------------------------------------------------------------\n", "prefixes": [ "39/72" ] }