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GET /api/patches/1475741/?format=api
{ "id": 1475741, "url": "http://patchwork.ozlabs.org/api/patches/1475741/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20210508014802.892561-34-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": "<20210508014802.892561-34-richard.henderson@linaro.org>", "list_archive_url": null, "date": "2021-05-08T01:47:23", "name": "[33/72] softfloat: Use uadd64_carry, usub64_borrow in softfloat-macros.h", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "b31e7e3ee7ab90b93e9ec60097a56c76d55f52b4", "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/20210508014802.892561-34-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/1475741/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/1475741/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=JR1h2RVs;\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 4FcWDm6s76z9sX1\n\tfor <incoming@patchwork.ozlabs.org>; Sat, 8 May 2021 12:17:44 +1000 (AEST)", "from localhost ([::1]:35994 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 1lfCXH-0005uY-01\n\tfor incoming@patchwork.ozlabs.org; Fri, 07 May 2021 22:17:43 -0400", "from eggs.gnu.org ([2001:470:142:3::10]:40914)\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 1lfC59-0004YR-SV\n for qemu-devel@nongnu.org; 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helo=mail-pl1-x629.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": "Use compiler support for carry arithmetic.\n\nSigned-off-by: Richard Henderson <richard.henderson@linaro.org>\n---\n include/fpu/softfloat-macros.h | 95 +++++++++-------------------------\n 1 file changed, 25 insertions(+), 70 deletions(-)", "diff": "diff --git a/include/fpu/softfloat-macros.h b/include/fpu/softfloat-macros.h\nindex a35ec2893a..2e3760a9c1 100644\n--- a/include/fpu/softfloat-macros.h\n+++ b/include/fpu/softfloat-macros.h\n@@ -83,6 +83,7 @@ this code that are retained.\n #define FPU_SOFTFLOAT_MACROS_H\n \n #include \"fpu/softfloat-types.h\"\n+#include \"qemu/host-utils.h\"\n \n /*----------------------------------------------------------------------------\n | Shifts `a' right by the number of bits given in `count'. If any nonzero\n@@ -403,16 +404,12 @@ static inline void\n | are stored at the locations pointed to by `z0Ptr' and `z1Ptr'.\n *----------------------------------------------------------------------------*/\n \n-static inline void\n- add128(\n- uint64_t a0, uint64_t a1, uint64_t b0, uint64_t b1, uint64_t *z0Ptr, uint64_t *z1Ptr )\n+static inline void add128(uint64_t a0, uint64_t a1, uint64_t b0, uint64_t b1,\n+ uint64_t *z0Ptr, uint64_t *z1Ptr)\n {\n- uint64_t z1;\n-\n- z1 = a1 + b1;\n- *z1Ptr = z1;\n- *z0Ptr = a0 + b0 + ( z1 < a1 );\n-\n+ bool c = 0;\n+ *z1Ptr = uadd64_carry(a1, b1, &c);\n+ *z0Ptr = uadd64_carry(a0, b0, &c);\n }\n \n /*----------------------------------------------------------------------------\n@@ -423,34 +420,14 @@ static inline void\n | `z1Ptr', and `z2Ptr'.\n *----------------------------------------------------------------------------*/\n \n-static inline void\n- add192(\n- uint64_t a0,\n- uint64_t a1,\n- uint64_t a2,\n- uint64_t b0,\n- uint64_t b1,\n- uint64_t b2,\n- uint64_t *z0Ptr,\n- uint64_t *z1Ptr,\n- uint64_t *z2Ptr\n- )\n+static inline void add192(uint64_t a0, uint64_t a1, uint64_t a2,\n+ uint64_t b0, uint64_t b1, uint64_t b2,\n+ uint64_t *z0Ptr, uint64_t *z1Ptr, uint64_t *z2Ptr)\n {\n- uint64_t z0, z1, z2;\n- int8_t carry0, carry1;\n-\n- z2 = a2 + b2;\n- carry1 = ( z2 < a2 );\n- z1 = a1 + b1;\n- carry0 = ( z1 < a1 );\n- z0 = a0 + b0;\n- z1 += carry1;\n- z0 += ( z1 < carry1 );\n- z0 += carry0;\n- *z2Ptr = z2;\n- *z1Ptr = z1;\n- *z0Ptr = z0;\n-\n+ bool c = 0;\n+ *z2Ptr = uadd64_carry(a2, b2, &c);\n+ *z1Ptr = uadd64_carry(a1, b1, &c);\n+ *z0Ptr = uadd64_carry(a0, b0, &c);\n }\n \n /*----------------------------------------------------------------------------\n@@ -461,14 +438,12 @@ static inline void\n | `z1Ptr'.\n *----------------------------------------------------------------------------*/\n \n-static inline void\n- sub128(\n- uint64_t a0, uint64_t a1, uint64_t b0, uint64_t b1, uint64_t *z0Ptr, uint64_t *z1Ptr )\n+static inline void sub128(uint64_t a0, uint64_t a1, uint64_t b0, uint64_t b1,\n+ uint64_t *z0Ptr, uint64_t *z1Ptr)\n {\n-\n- *z1Ptr = a1 - b1;\n- *z0Ptr = a0 - b0 - ( a1 < b1 );\n-\n+ bool c = 0;\n+ *z1Ptr = usub64_borrow(a1, b1, &c);\n+ *z0Ptr = usub64_borrow(a0, b0, &c);\n }\n \n /*----------------------------------------------------------------------------\n@@ -479,34 +454,14 @@ static inline void\n | pointed to by `z0Ptr', `z1Ptr', and `z2Ptr'.\n *----------------------------------------------------------------------------*/\n \n-static inline void\n- sub192(\n- uint64_t a0,\n- uint64_t a1,\n- uint64_t a2,\n- uint64_t b0,\n- uint64_t b1,\n- uint64_t b2,\n- uint64_t *z0Ptr,\n- uint64_t *z1Ptr,\n- uint64_t *z2Ptr\n- )\n+static inline void sub192(uint64_t a0, uint64_t a1, uint64_t a2,\n+ uint64_t b0, uint64_t b1, uint64_t b2,\n+ uint64_t *z0Ptr, uint64_t *z1Ptr, uint64_t *z2Ptr)\n {\n- uint64_t z0, z1, z2;\n- int8_t borrow0, borrow1;\n-\n- z2 = a2 - b2;\n- borrow1 = ( a2 < b2 );\n- z1 = a1 - b1;\n- borrow0 = ( a1 < b1 );\n- z0 = a0 - b0;\n- z0 -= ( z1 < borrow1 );\n- z1 -= borrow1;\n- z0 -= borrow0;\n- *z2Ptr = z2;\n- *z1Ptr = z1;\n- *z0Ptr = z0;\n-\n+ bool c = 0;\n+ *z2Ptr = usub64_borrow(a2, b2, &c);\n+ *z1Ptr = usub64_borrow(a1, b1, &c);\n+ *z0Ptr = usub64_borrow(a0, b0, &c);\n }\n \n /*----------------------------------------------------------------------------\n", "prefixes": [ "33/72" ] }