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GET /api/1.1/patches/2230701/?format=api
{ "id": 2230701, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2230701/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260430000524.56046-24-richard.henderson@linaro.org/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.1/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": "" }, "msgid": "<20260430000524.56046-24-richard.henderson@linaro.org>", "date": "2026-04-30T00:05:06", "name": "[v2,23/40] fpu: Introduce record_denormals_used", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "bdc143cb8eb1f6ab71335bc9e5a1e650339ddf9a", "submitter": { "id": 72104, "url": "http://patchwork.ozlabs.org/api/1.1/people/72104/?format=api", "name": "Richard Henderson", "email": "richard.henderson@linaro.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260430000524.56046-24-richard.henderson@linaro.org/mbox/", "series": [ { "id": 502170, "url": "http://patchwork.ozlabs.org/api/1.1/series/502170/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=502170", "date": "2026-04-30T00:04:48", "name": "fpu: Export some internals for targets", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/502170/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2230701/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2230701/checks/", "tags": {}, "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=EWVT3mH3;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists1p.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g5ZMT569zz1yHv\n\tfor <incoming@patchwork.ozlabs.org>; Thu, 30 Apr 2026 10:11:01 +1000 (AEST)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1wIEvu-0000O1-Px; Wed, 29 Apr 2026 20:07:11 -0400", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists1p.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 1wIEvA-0007jg-FM\n for qemu-devel@nongnu.org; Wed, 29 Apr 2026 20:06:26 -0400", "from mail-pf1-x431.google.com ([2607:f8b0:4864:20::431])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)\n (Exim 4.90_1) (envelope-from <richard.henderson@linaro.org>)\n id 1wIEv8-0001rQ-Mr\n for qemu-devel@nongnu.org; Wed, 29 Apr 2026 20:06:24 -0400", "by mail-pf1-x431.google.com with SMTP id\n d2e1a72fcca58-82d0b68837aso184885b3a.2\n for <qemu-devel@nongnu.org>; Wed, 29 Apr 2026 17:06:22 -0700 (PDT)", "from stoup.. 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helo=mail-pf1-x431.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": "2.1.29", "Precedence": "list", "List-Id": "qemu development <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>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "Signed-off-by: Richard Henderson <richard.henderson@linaro.org>\n---\n fpu/softfloat.c | 8 +++++++\n fpu/softfloat-parts.c.inc | 49 +++++++++++----------------------------\n 2 files changed, 22 insertions(+), 35 deletions(-)", "diff": "diff --git a/fpu/softfloat.c b/fpu/softfloat.c\nindex 4efafbf05a..168181858f 100644\n--- a/fpu/softfloat.c\n+++ b/fpu/softfloat.c\n@@ -442,6 +442,14 @@ static inline bool is_anynorm(FloatClass c)\n return float_cmask(c) & float_cmask_anynorm;\n }\n \n+/* Record when denormals have been used. */\n+static void record_denormals_used(int mask, float_status *s)\n+{\n+ if (unlikely(mask & float_cmask_denormal)) {\n+ float_raise(float_flag_input_denormal_used, s);\n+ }\n+}\n+\n /* FloatParts256 is entirely internal, for parts128_mul* */\n typedef struct {\n FloatClass cls;\ndiff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc\nindex 211ecdf114..028c2daa27 100644\n--- a/fpu/softfloat-parts.c.inc\n+++ b/fpu/softfloat-parts.c.inc\n@@ -534,9 +534,8 @@ static FloatPartsN *partsN(addsub)(FloatPartsN *a, FloatPartsN *b,\n * For addition and subtraction, we will consume an\n * input denormal unless the other input is a NaN.\n */\n- if ((ab_mask & (float_cmask_denormal | float_cmask_anynan)) ==\n- float_cmask_denormal) {\n- float_raise(float_flag_input_denormal_used, s);\n+ if (!(ab_mask & float_cmask_anynan)) {\n+ record_denormals_used(ab_mask, s);\n }\n \n if (a->sign != b_sign) {\n@@ -623,9 +622,7 @@ static FloatPartsN *partsN(mul)(FloatPartsN *a, FloatPartsN *b,\n if (likely(cmask_is_only_normals(ab_mask))) {\n FloatPartsW tmp;\n \n- if (ab_mask & float_cmask_denormal) {\n- float_raise(float_flag_input_denormal_used, s);\n- }\n+ record_denormals_used(ab_mask, s);\n \n fracN(mulw)(&tmp, a, b);\n fracN(truncjam)(a, &tmp);\n@@ -653,9 +650,7 @@ static FloatPartsN *partsN(mul)(FloatPartsN *a, FloatPartsN *b,\n }\n \n /* Multiply by 0 or Inf */\n- if (ab_mask & float_cmask_denormal) {\n- float_raise(float_flag_input_denormal_used, s);\n- }\n+ record_denormals_used(ab_mask, s);\n \n if (ab_mask & float_cmask_inf) {\n a->cls = float_class_inf;\n@@ -784,9 +779,7 @@ static FloatPartsN *partsN(muladd_scalbn)(FloatPartsN *a, FloatPartsN *b,\n * this matches the set of cases where we consumed a\n * denormal input.\n */\n- if (abc_mask & float_cmask_denormal) {\n- float_raise(float_flag_input_denormal_used, s);\n- }\n+ record_denormals_used(abc_mask, s);\n return a;\n \n return_sub_zero:\n@@ -819,9 +812,7 @@ FloatPartsN partsN(div)(const FloatPartsN *a, const FloatPartsN *b,\n r.exp -= b->exp;\n \n if (likely(cmask_is_only_normals(ab_mask))) {\n- if (ab_mask & float_cmask_denormal) {\n- float_raise(float_flag_input_denormal_used, s);\n- }\n+ record_denormals_used(ab_mask, s);\n r.exp -= fracN(div)(&r, b);\n return r;\n }\n@@ -841,8 +832,8 @@ FloatPartsN partsN(div)(const FloatPartsN *a, const FloatPartsN *b,\n return partsN(pick_nan)(a, b, s);\n }\n \n- if ((ab_mask & float_cmask_denormal) && b->cls != float_class_zero) {\n- float_raise(float_flag_input_denormal_used, s);\n+ if (b->cls != float_class_zero) {\n+ record_denormals_used(ab_mask, s);\n }\n \n /* Inf / X */\n@@ -877,9 +868,7 @@ static FloatPartsN *partsN(modrem)(FloatPartsN *a, FloatPartsN *b,\n int ab_mask = float_cmask(a->cls) | float_cmask(b->cls);\n \n if (likely(cmask_is_only_normals(ab_mask))) {\n- if (ab_mask & float_cmask_denormal) {\n- float_raise(float_flag_input_denormal_used, s);\n- }\n+ record_denormals_used(ab_mask, s);\n fracN(modrem)(a, b, mod_quot);\n return a;\n }\n@@ -901,9 +890,7 @@ static FloatPartsN *partsN(modrem)(FloatPartsN *a, FloatPartsN *b,\n return a;\n }\n \n- if (ab_mask & float_cmask_denormal) {\n- float_raise(float_flag_input_denormal_used, s);\n- }\n+ record_denormals_used(ab_mask, s);\n \n /* N % Inf; 0 % N */\n g_assert(b->cls == float_class_inf || a->cls == float_class_zero);\n@@ -1493,9 +1480,7 @@ static FloatPartsN *partsN(minmax)(FloatPartsN *a, FloatPartsN *b,\n if ((flags & (minmax_isnum | minmax_isnumber))\n && !(ab_mask & float_cmask_snan)\n && (ab_mask & ~float_cmask_qnan)) {\n- if (ab_mask & float_cmask_denormal) {\n- float_raise(float_flag_input_denormal_used, s);\n- }\n+ record_denormals_used(ab_mask, s);\n return is_nan(a->cls) ? b : a;\n }\n \n@@ -1521,9 +1506,7 @@ static FloatPartsN *partsN(minmax)(FloatPartsN *a, FloatPartsN *b,\n return a;\n }\n \n- if (ab_mask & float_cmask_denormal) {\n- float_raise(float_flag_input_denormal_used, s);\n- }\n+ record_denormals_used(ab_mask, s);\n \n a_exp = a->exp;\n b_exp = b->exp;\n@@ -1594,9 +1577,7 @@ static FloatRelation partsN(compare)(FloatPartsN *a, FloatPartsN *b,\n if (likely(cmask_is_only_normals(ab_mask))) {\n FloatRelation cmp;\n \n- if (ab_mask & float_cmask_denormal) {\n- float_raise(float_flag_input_denormal_used, s);\n- }\n+ record_denormals_used(ab_mask, s);\n \n if (a->sign != b->sign) {\n goto a_sign;\n@@ -1623,9 +1604,7 @@ static FloatRelation partsN(compare)(FloatPartsN *a, FloatPartsN *b,\n return float_relation_unordered;\n }\n \n- if (ab_mask & float_cmask_denormal) {\n- float_raise(float_flag_input_denormal_used, s);\n- }\n+ record_denormals_used(ab_mask, s);\n \n if (ab_mask & float_cmask_zero) {\n if (ab_mask == float_cmask_zero) {\n", "prefixes": [ "v2", "23/40" ] }