{"id":2228440,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2228440/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260426134002.865628-47-richard.henderson@linaro.org/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.1/projects/14/?format=json","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":"<20260426134002.865628-47-richard.henderson@linaro.org>","date":"2026-04-26T13:39:23","name":"[46/84] fpu: Return struct from float128_unpack_canonical","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"ca64b250fed1e61d3c4561e9a365875cbd92283f","submitter":{"id":72104,"url":"http://patchwork.ozlabs.org/api/1.1/people/72104/?format=json","name":"Richard Henderson","email":"richard.henderson@linaro.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260426134002.865628-47-richard.henderson@linaro.org/mbox/","series":[{"id":501533,"url":"http://patchwork.ozlabs.org/api/1.1/series/501533/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=501533","date":"2026-04-26T13:38:37","name":"fpu: Export some internals for targets","version":1,"mbox":"http://patchwork.ozlabs.org/series/501533/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2228440/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2228440/checks/","tags":{},"headers":{"Return-Path":"","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=gCma/9my;\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 4g3SlD1Gbzz1yHg\n\tfor ; Sun, 26 Apr 2026 23:50:48 +1000 (AEST)","from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from )\n\tid 1wGznp-0005gF-Jp; Sun, 26 Apr 2026 09:45:41 -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 )\n id 1wGznS-0005Uc-2T\n for qemu-devel@nongnu.org; Sun, 26 Apr 2026 09:45:18 -0400","from mail-pl1-x636.google.com ([2607:f8b0:4864:20::636])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)\n (Exim 4.90_1) (envelope-from )\n id 1wGznQ-0001JH-1D\n for qemu-devel@nongnu.org; Sun, 26 Apr 2026 09:45:17 -0400","by mail-pl1-x636.google.com with SMTP id\n d9443c01a7336-2b23fcf90b2so89126595ad.3\n for ; Sun, 26 Apr 2026 06:45:15 -0700 (PDT)","from stoup.. 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","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 \n---\n fpu/softfloat.c | 105 +++++++++++++++++-------------------------------\n 1 file changed, 37 insertions(+), 68 deletions(-)","diff":"diff --git a/fpu/softfloat.c b/fpu/softfloat.c\nindex a9c91fb8a4..77585fa11f 100644\n--- a/fpu/softfloat.c\n+++ b/fpu/softfloat.c\n@@ -1583,11 +1583,11 @@ static float64 float64r32_round_pack_canonical(FloatParts64 *p,\n return float64r32_pack_raw(p);\n }\n \n-static void float128_unpack_canonical(FloatParts128 *p, float128 f,\n- float_status *s)\n+static FloatParts128 float128_unpack_canonical(float128 f, float_status *s)\n {\n- *p = float128_unpack_raw(f);\n- parts128_canonicalize(p, s, &float128_params);\n+ FloatParts128 p = float128_unpack_raw(f);\n+ parts128_canonicalize(&p, s, &float128_params);\n+ return p;\n }\n \n static float128 float128_round_pack_canonical(FloatParts128 *p,\n@@ -1872,11 +1872,9 @@ bfloat16 bfloat16_sub(bfloat16 a, bfloat16 b, float_status *status)\n static float128 QEMU_FLATTEN\n float128_addsub(float128 a, float128 b, float_status *status, bool subtract)\n {\n- FloatParts128 pa, pb, *pr;\n-\n- float128_unpack_canonical(&pa, a, status);\n- float128_unpack_canonical(&pb, b, status);\n- pr = parts128_addsub(&pa, &pb, status, subtract);\n+ FloatParts128 pa = float128_unpack_canonical(a, status);\n+ FloatParts128 pb = float128_unpack_canonical(b, status);\n+ FloatParts128 *pr = parts128_addsub(&pa, &pb, status, subtract);\n \n return float128_round_pack_canonical(pr, status);\n }\n@@ -1994,11 +1992,9 @@ bfloat16_mul(bfloat16 a, bfloat16 b, float_status *status)\n float128 QEMU_FLATTEN\n float128_mul(float128 a, float128 b, float_status *status)\n {\n- FloatParts128 pa, pb, *pr;\n-\n- float128_unpack_canonical(&pa, a, status);\n- float128_unpack_canonical(&pb, b, status);\n- pr = parts128_mul(&pa, &pb, status);\n+ FloatParts128 pa = float128_unpack_canonical(a, status);\n+ FloatParts128 pb = float128_unpack_canonical(b, status);\n+ FloatParts128 *pr = parts128_mul(&pa, &pb, status);\n \n return float128_round_pack_canonical(pr, status);\n }\n@@ -2255,12 +2251,10 @@ bfloat16 QEMU_FLATTEN bfloat16_muladd(bfloat16 a, bfloat16 b, bfloat16 c,\n float128 QEMU_FLATTEN float128_muladd(float128 a, float128 b, float128 c,\n int flags, float_status *status)\n {\n- FloatParts128 pa, pb, pc, *pr;\n-\n- float128_unpack_canonical(&pa, a, status);\n- float128_unpack_canonical(&pb, b, status);\n- float128_unpack_canonical(&pc, c, status);\n- pr = parts128_muladd_scalbn(&pa, &pb, &pc, 0, flags, status);\n+ FloatParts128 pa = float128_unpack_canonical(a, status);\n+ FloatParts128 pb = float128_unpack_canonical(b, status);\n+ FloatParts128 pc = float128_unpack_canonical(c, status);\n+ FloatParts128 *pr = parts128_muladd_scalbn(&pa, &pb, &pc, 0, flags, status);\n \n /* Round before applying negate result. */\n parts128_uncanon(pr, status, &float128_params, false);\n@@ -2383,11 +2377,9 @@ bfloat16_div(bfloat16 a, bfloat16 b, float_status *status)\n float128 QEMU_FLATTEN\n float128_div(float128 a, float128 b, float_status *status)\n {\n- FloatParts128 pa, pb, *pr;\n-\n- float128_unpack_canonical(&pa, a, status);\n- float128_unpack_canonical(&pb, b, status);\n- pr = parts128_div(&pa, &pb, status);\n+ FloatParts128 pa = float128_unpack_canonical(a, status);\n+ FloatParts128 pb = float128_unpack_canonical(b, status);\n+ FloatParts128 *pr = parts128_div(&pa, &pb, status);\n \n return float128_round_pack_canonical(pr, status);\n }\n@@ -2429,11 +2421,9 @@ float64 float64_rem(float64 a, float64 b, float_status *status)\n \n float128 float128_rem(float128 a, float128 b, float_status *status)\n {\n- FloatParts128 pa, pb, *pr;\n-\n- float128_unpack_canonical(&pa, a, status);\n- float128_unpack_canonical(&pb, b, status);\n- pr = parts128_modrem(&pa, &pb, NULL, status);\n+ FloatParts128 pa = float128_unpack_canonical(a, status);\n+ FloatParts128 pb = float128_unpack_canonical(b, status);\n+ FloatParts128 *pr = parts128_modrem(&pa, &pb, NULL, status);\n \n return float128_round_pack_canonical(pr, status);\n }\n@@ -2782,20 +2772,18 @@ bfloat16 float64_to_bfloat16(float64 a, float_status *s)\n \n float32 float128_to_float32(float128 a, float_status *s)\n {\n+ FloatParts128 p128 = float128_unpack_canonical(a, s);\n FloatParts64 p64;\n- FloatParts128 p128;\n \n- float128_unpack_canonical(&p128, a, s);\n parts_float_to_float_narrow(&p64, &p128, s);\n return float32_round_pack_canonical(&p64, s);\n }\n \n float64 float128_to_float64(float128 a, float_status *s)\n {\n+ FloatParts128 p128 = float128_unpack_canonical(a, s);\n FloatParts64 p64;\n- FloatParts128 p128;\n \n- float128_unpack_canonical(&p128, a, s);\n parts_float_to_float_narrow(&p64, &p128, s);\n return float64_round_pack_canonical(&p64, s);\n }\n@@ -2876,9 +2864,8 @@ floatx80 float64_to_floatx80(float64 a, float_status *s)\n \n floatx80 float128_to_floatx80(float128 a, float_status *s)\n {\n- FloatParts128 p;\n+ FloatParts128 p = float128_unpack_canonical(a, s);\n \n- float128_unpack_canonical(&p, a, s);\n parts128_float_to_float(&p, s);\n return floatx80_round_pack_canonical(&p, s);\n }\n@@ -2921,9 +2908,8 @@ bfloat16 bfloat16_round_to_int(bfloat16 a, float_status *s)\n \n float128 float128_round_to_int(float128 a, float_status *s)\n {\n- FloatParts128 p;\n+ FloatParts128 p = float128_unpack_canonical(a, s);\n \n- float128_unpack_canonical(&p, a, s);\n parts128_round_to_int(&p, s->float_rounding_mode, 0, s, &float128_params);\n return float128_round_pack_canonical(&p, s);\n }\n@@ -3046,18 +3032,14 @@ int64_t bfloat16_to_int64_scalbn(bfloat16 a, FloatRoundMode rmode, int scale,\n static int32_t float128_to_int32_scalbn(float128 a, FloatRoundMode rmode,\n int scale, float_status *s)\n {\n- FloatParts128 p;\n-\n- float128_unpack_canonical(&p, a, s);\n+ FloatParts128 p = float128_unpack_canonical(a, s);\n return parts128_float_to_sint(&p, rmode, scale, INT32_MIN, INT32_MAX, s);\n }\n \n static int64_t float128_to_int64_scalbn(float128 a, FloatRoundMode rmode,\n int scale, float_status *s)\n {\n- FloatParts128 p;\n-\n- float128_unpack_canonical(&p, a, s);\n+ FloatParts128 p = float128_unpack_canonical(a, s);\n return parts128_float_to_sint(&p, rmode, scale, INT64_MIN, INT64_MAX, s);\n }\n \n@@ -3066,9 +3048,7 @@ static Int128 float128_to_int128_scalbn(float128 a, FloatRoundMode rmode,\n {\n int flags = 0;\n Int128 r;\n- FloatParts128 p;\n-\n- float128_unpack_canonical(&p, a, s);\n+ FloatParts128 p = float128_unpack_canonical(a, s);\n \n switch (p.cls) {\n case float_class_snan:\n@@ -3512,18 +3492,14 @@ uint64_t bfloat16_to_uint64_scalbn(bfloat16 a, FloatRoundMode rmode,\n static uint32_t float128_to_uint32_scalbn(float128 a, FloatRoundMode rmode,\n int scale, float_status *s)\n {\n- FloatParts128 p;\n-\n- float128_unpack_canonical(&p, a, s);\n+ FloatParts128 p = float128_unpack_canonical(a, s);\n return parts128_float_to_uint(&p, rmode, scale, UINT32_MAX, s);\n }\n \n static uint64_t float128_to_uint64_scalbn(float128 a, FloatRoundMode rmode,\n int scale, float_status *s)\n {\n- FloatParts128 p;\n-\n- float128_unpack_canonical(&p, a, s);\n+ FloatParts128 p = float128_unpack_canonical(a, s);\n return parts128_float_to_uint(&p, rmode, scale, UINT64_MAX, s);\n }\n \n@@ -3532,9 +3508,7 @@ static Int128 float128_to_uint128_scalbn(float128 a, FloatRoundMode rmode,\n {\n int flags = 0;\n Int128 r;\n- FloatParts128 p;\n-\n- float128_unpack_canonical(&p, a, s);\n+ FloatParts128 p = float128_unpack_canonical(a, s);\n \n switch (p.cls) {\n case float_class_snan:\n@@ -4210,11 +4184,9 @@ static float64 float64_minmax(float64 a, float64 b, float_status *s, int flags)\n static float128 float128_minmax(float128 a, float128 b,\n float_status *s, int flags)\n {\n- FloatParts128 pa, pb, *pr;\n-\n- float128_unpack_canonical(&pa, a, s);\n- float128_unpack_canonical(&pb, b, s);\n- pr = parts128_minmax(&pa, &pb, s, flags);\n+ FloatParts128 pa = float128_unpack_canonical(a, s);\n+ FloatParts128 pb = float128_unpack_canonical(b, s);\n+ FloatParts128 *pr = parts128_minmax(&pa, &pb, s, flags);\n \n return float128_round_pack_canonical(pr, s);\n }\n@@ -4393,10 +4365,9 @@ FloatRelation bfloat16_compare_quiet(bfloat16 a, bfloat16 b, float_status *s)\n static FloatRelation QEMU_FLATTEN\n float128_do_compare(float128 a, float128 b, float_status *s, bool is_quiet)\n {\n- FloatParts128 pa, pb;\n+ FloatParts128 pa = float128_unpack_canonical(a, s);\n+ FloatParts128 pb = float128_unpack_canonical(b, s);\n \n- float128_unpack_canonical(&pa, a, s);\n- float128_unpack_canonical(&pb, b, s);\n return parts128_compare(&pa, &pb, s, is_quiet);\n }\n \n@@ -4470,9 +4441,8 @@ bfloat16 bfloat16_scalbn(bfloat16 a, int n, float_status *status)\n \n float128 float128_scalbn(float128 a, int n, float_status *status)\n {\n- FloatParts128 p;\n+ FloatParts128 p = float128_unpack_canonical(a, status);\n \n- float128_unpack_canonical(&p, a, status);\n parts128_scalbn(&p, n, status);\n return float128_round_pack_canonical(&p, status);\n }\n@@ -4590,9 +4560,8 @@ bfloat16 QEMU_FLATTEN bfloat16_sqrt(bfloat16 a, float_status *status)\n \n float128 QEMU_FLATTEN float128_sqrt(float128 a, float_status *status)\n {\n- FloatParts128 p;\n+ FloatParts128 p = float128_unpack_canonical(a, status);\n \n- float128_unpack_canonical(&p, a, status);\n parts128_sqrt(&p, status, &float128_params);\n return float128_round_pack_canonical(&p, status);\n }\n","prefixes":["46/84"]}