From nobody Sun Feb 8 00:50:03 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1605005858; cv=none; d=zohomail.com; s=zohoarc; b=X7IbaffGPWZmkiNhmZlPFv8b1AEv38l4A/UOtulcVaaccPIXCUqDXIeWZrl2p02xsatdeacnOo5L9/HznTprWnWQ8OCwzmaSyOoTYT62LXHkpfPAcSSZBq3nx61typ5+1ZCHKDV8UFeZD7q2j7+d3dyQTv6Fd5TiVvisc7hoX0A= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1605005858; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=4K3U1NewmUjwvna+a3l1Z82sMILfAkInSo7TJ3mQ3Sw=; b=ekN4UxXNXQ2zvPv1/enLaR4b5AWNY746JQzQkh6dhglduxfVGwEC8bKz4/Rxa+YfJo3AGm/uB0jdNtFPxBMCYXzMB7x7y7u2mKMTaWQ/TOfYy87wn7ti6D7XJV6ytNk5clNW7jvOn50T7pldjPSH7tOFzeRy2VOpwOmr6afd5Is= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1605005858858532.632810883471; Tue, 10 Nov 2020 02:57:38 -0800 (PST) Received: from localhost ([::1]:60020 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kcRLF-0007JT-QF for importer@patchew.org; Tue, 10 Nov 2020 05:57:37 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:41126) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kcRJB-0005E4-AO; Tue, 10 Nov 2020 05:55:29 -0500 Received: from mail-wm1-x343.google.com ([2a00:1450:4864:20::343]:54681) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kcRJ9-00076v-KB; Tue, 10 Nov 2020 05:55:29 -0500 Received: by mail-wm1-x343.google.com with SMTP id d142so2538949wmd.4; Tue, 10 Nov 2020 02:55:26 -0800 (PST) Received: from localhost.localdomain ([151.33.227.77]) by smtp.gmail.com with ESMTPSA id x6sm2567891wmc.48.2020.11.10.02.55.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Nov 2020 02:55:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=4K3U1NewmUjwvna+a3l1Z82sMILfAkInSo7TJ3mQ3Sw=; b=mguOGh1SWxZqFHxC6z+CQSImAPJEqfAbpzxMgZhNw8p4epQ32yyongPmbTYrwA3sRM EV+bd0lfAsl1tm/Y9D+CnQcWoUo7nnz3DhA+Yxl5EjDgdUWeE1cZ6AVMYGcZALn4aqTH eREZIlCNhhQQ+sxRzANYdkPvhITQxWHKWNxlSf1xRc2dF0Sl9o+GIlySphdnmZLq7VzW YUX2BWUZBBtOhUDo/Wk05NoJ4wxwAQp8qFxrRxsI+kSnu2qNlsBgqoFqbGbxqdQwu2li +GH0Fs5RsEPyJQ7ByjKsSS9HW1NKG9E5v80NjYm2txyR5UNoJ72zy42Yz9nN6toOe/Fr Ic4A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=4K3U1NewmUjwvna+a3l1Z82sMILfAkInSo7TJ3mQ3Sw=; b=DxavgXYIoj0ukjf/Pmao5VhEmB6F3mB8ly6foPIs6+Gm3mi6qyuqjR5Twpjt3GqwHZ 4wNOoRIFUL29n0Qqw/rbtJH9wam+hP5tb9k7J9r8gw7RmJGdHhozmkzRyKKCY9dnnKCx ag5jRHPFKjDDd+TbF5rpi0u5qseaszKEKYyCcKtDbWct5UfJgKadWAF3awDBpOugP2Bm DjGYTp8wA+k77e4VcC1zxfatJagmZwSjayv9w45u6oGIb3wYUq/66FhSNiW9taOQ/sTB XKMzMF+BVdBNuJkxtCPmtMrz6nlYs8ArjB4f1mrG1IJJr4pWk0b3376GaWpc+oOfNjA0 69yw== X-Gm-Message-State: AOAM5329AVa5IYnW/K3b30ZFZKJKs56YQZhYg50Lo+f07XQRn3swRTPl s/tVor+Gmc4/PLzGtsGpeoBuivo+7MABXw== X-Google-Smtp-Source: ABdhPJw8hG6ApJNMCk1njgOp5SLqEMq2D5qpFyW2e95wHWx7fV9gwXt33kFQDTtEXxp4z0erfhoRCw== X-Received: by 2002:a7b:c77a:: with SMTP id x26mr587252wmk.63.1605005725661; Tue, 10 Nov 2020 02:55:25 -0800 (PST) From: LemonBoy To: qemu-devel@nongnu.org Subject: [PATCH v2 1/4] ppc/translate: Fix unordered f64/f128 comparisons Date: Tue, 10 Nov 2020 11:53:18 +0100 Message-Id: <20201110105321.25889-2-thatlemon@gmail.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201110105321.25889-1-thatlemon@gmail.com> References: <20201110105321.25889-1-thatlemon@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::343; envelope-from=thatlemon@gmail.com; helo=mail-wm1-x343.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, 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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: LemonBoy , richard.henderson@linaro.org, qemu-ppc@nongnu.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" According to the PowerISA v3.1 reference, Table 68 "Actions for xscmpudp - Part 1: Compare Unordered", whenever one of the two operands is a NaN the SO bit is set while the other three bits are cleared. Apply the same change to xscmpuqp. The respective ordered counterparts are unaffected. Signed-off-by: Giuseppe Musacchio --- target/ppc/fpu_helper.c | 32 ++++++++++++++++++++++---------- 1 file changed, 22 insertions(+), 10 deletions(-) diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c index 9b8c8b70b6..b07ff66375 100644 --- a/target/ppc/fpu_helper.c +++ b/target/ppc/fpu_helper.c @@ -2479,13 +2479,11 @@ void helper_##op(CPUPPCState *env, uint32_t opcode,= \ if (float64_is_signaling_nan(xa->VsrD(0), &env->fp_status) || \ float64_is_signaling_nan(xb->VsrD(0), &env->fp_status)) { \ vxsnan_flag =3D true; = \ - cc =3D CRF_SO; = \ if (fpscr_ve =3D=3D 0 && ordered) { = \ vxvc_flag =3D true; = \ } \ } else if (float64_is_quiet_nan(xa->VsrD(0), &env->fp_status) || \ float64_is_quiet_nan(xb->VsrD(0), &env->fp_status)) { \ - cc =3D CRF_SO; = \ if (ordered) { \ vxvc_flag =3D true; = \ } \ @@ -2497,12 +2495,19 @@ void helper_##op(CPUPPCState *env, uint32_t opcode,= \ float_invalid_op_vxvc(env, 0, GETPC()); \ } \ \ - if (float64_lt(xa->VsrD(0), xb->VsrD(0), &env->fp_status)) { \ + switch (float64_compare(xa->VsrD(0), xb->VsrD(0), &env->fp_status)) {\ + case float_relation_less: \ cc |=3D CRF_LT; = \ - } else if (!float64_le(xa->VsrD(0), xb->VsrD(0), &env->fp_status)) { \ - cc |=3D CRF_GT; = \ - } else { \ + break; \ + case float_relation_equal: \ cc |=3D CRF_EQ; = \ + break; \ + case float_relation_greater: \ + cc |=3D CRF_GT; = \ + break; \ + case float_relation_unordered: \ + cc |=3D CRF_SO; = \ + break; \ } \ \ env->fpscr &=3D ~FP_FPCC; = \ @@ -2545,12 +2550,19 @@ void helper_##op(CPUPPCState *env, uint32_t opcode,= \ float_invalid_op_vxvc(env, 0, GETPC()); \ } \ \ - if (float128_lt(xa->f128, xb->f128, &env->fp_status)) { \ + switch (float128_compare(xa->f128, xb->f128, &env->fp_status)) { \ + case float_relation_less: \ cc |=3D CRF_LT; \ - } else if (!float128_le(xa->f128, xb->f128, &env->fp_status)) { \ - cc |=3D CRF_GT; \ - } else { \ + break; \ + case float_relation_equal: \ cc |=3D CRF_EQ; \ + break; \ + case float_relation_greater: \ + cc |=3D CRF_GT; \ + break; \ + case float_relation_unordered: \ + cc |=3D CRF_SO; \ + break; \ } \ \ env->fpscr &=3D ~FP_FPCC; \ --=20 2.27.0 From nobody Sun Feb 8 00:50:03 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1605005962; cv=none; d=zohomail.com; s=zohoarc; b=lJMONThIRWNRxB86dejbB8x0svjCxeGO/9FSO28xd9fYFcYrofVG2+HWcHspD7sc48UaNDwh/EUv6qzvrDBE4EmiPOkhIdHMIQ9Qt1nzU4woW8XcQLWw1ELCoPXIZTm8ZsovhT0/o8akm8KYdeVVzWKdziu/ImWSMfMWmkLUBj0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1605005962; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=4mDJE2ZKgDk5LfxW8ALd7hpN+PQvRWr/geM6EPNC0uM=; b=DqTbW2KgNG6X+uLDx06nBtYoUfoWh3i9FkCMsfGClVcdoP6FnxtXgUYH5FfmJhMpV0PhP/HgwfjGHIbmrjs+BG/Pg71SYEDVkqtP4XFFvzJ/IJFfp88TmmUbgB4jCsJsp7ToeR09KQXIESBGzUEQ/CkIJJ2yURfoxe2HT8YDQNI= ARC-Authentication-Results: i=1; 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That's all we know. 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, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, 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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: LemonBoy , richard.henderson@linaro.org, qemu-ppc@nongnu.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Suggested-by: Richard Henderson Signed-off-by: Giuseppe Musacchio Reviewed-by: Richard Henderson --- target/ppc/fpu_helper.c | 220 +++++++++++++++++++++------------------- 1 file changed, 118 insertions(+), 102 deletions(-) diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c index b07ff66375..c74c080c17 100644 --- a/target/ppc/fpu_helper.c +++ b/target/ppc/fpu_helper.c @@ -2467,113 +2467,129 @@ void helper_xscmpexpqp(CPUPPCState *env, uint32_t= opcode, do_float_check_status(env, GETPC()); } =20 -#define VSX_SCALAR_CMP(op, ordered) \ -void helper_##op(CPUPPCState *env, uint32_t opcode, \ - ppc_vsr_t *xa, ppc_vsr_t *xb) \ -{ \ - uint32_t cc =3D 0; = \ - bool vxsnan_flag =3D false, vxvc_flag =3D false; = \ - \ - helper_reset_fpstatus(env); \ - \ - if (float64_is_signaling_nan(xa->VsrD(0), &env->fp_status) || \ - float64_is_signaling_nan(xb->VsrD(0), &env->fp_status)) { \ - vxsnan_flag =3D true; = \ - if (fpscr_ve =3D=3D 0 && ordered) { = \ - vxvc_flag =3D true; = \ - } \ - } else if (float64_is_quiet_nan(xa->VsrD(0), &env->fp_status) || \ - float64_is_quiet_nan(xb->VsrD(0), &env->fp_status)) { \ - if (ordered) { \ - vxvc_flag =3D true; = \ - } \ - } \ - if (vxsnan_flag) { \ - float_invalid_op_vxsnan(env, GETPC()); \ - } \ - if (vxvc_flag) { \ - float_invalid_op_vxvc(env, 0, GETPC()); \ - } \ - \ - switch (float64_compare(xa->VsrD(0), xb->VsrD(0), &env->fp_status)) {\ - case float_relation_less: \ - cc |=3D CRF_LT; = \ - break; \ - case float_relation_equal: \ - cc |=3D CRF_EQ; = \ - break; \ - case float_relation_greater: \ - cc |=3D CRF_GT; = \ - break; \ - case float_relation_unordered: \ - cc |=3D CRF_SO; = \ - break; \ - } \ - \ - env->fpscr &=3D ~FP_FPCC; = \ - env->fpscr |=3D cc << FPSCR_FPCC; = \ - env->crf[BF(opcode)] =3D cc; = \ - \ - do_float_check_status(env, GETPC()); \ +static inline void do_scalar_cmp(CPUPPCState *env, ppc_vsr_t *xa, ppc_vsr_= t *xb, + int crf_idx, bool ordered) +{ + uint32_t cc =3D 0; + bool vxsnan_flag =3D false, vxvc_flag =3D false; + + helper_reset_fpstatus(env); + + if (float64_is_signaling_nan(xa->VsrD(0), &env->fp_status) || + float64_is_signaling_nan(xb->VsrD(0), &env->fp_status)) { + vxsnan_flag =3D true; + if (fpscr_ve =3D=3D 0 && ordered) { + vxvc_flag =3D true; + } + } else if (float64_is_quiet_nan(xa->VsrD(0), &env->fp_status) || + float64_is_quiet_nan(xb->VsrD(0), &env->fp_status)) { + if (ordered) { + vxvc_flag =3D true; + } + } + if (vxsnan_flag) { + float_invalid_op_vxsnan(env, GETPC()); + } + if (vxvc_flag) { + float_invalid_op_vxvc(env, 0, GETPC()); + } + + switch (float64_compare(xa->VsrD(0), xb->VsrD(0), &env->fp_status)) { + case float_relation_less: + cc |=3D CRF_LT; + break; + case float_relation_equal: + cc |=3D CRF_EQ; + break; + case float_relation_greater: + cc |=3D CRF_GT; + break; + case float_relation_unordered: + cc |=3D CRF_SO; + break; + } + + env->fpscr &=3D ~FP_FPCC; + env->fpscr |=3D cc << FPSCR_FPCC; + env->crf[crf_idx] =3D cc; + + do_float_check_status(env, GETPC()); +} + +void helper_xscmpodp(CPUPPCState *env, uint32_t opcode, ppc_vsr_t *xa, + ppc_vsr_t *xb) +{ + do_scalar_cmp(env, xa, xb, BF(opcode), true); +} + +void helper_xscmpudp(CPUPPCState *env, uint32_t opcode, ppc_vsr_t *xa, + ppc_vsr_t *xb) +{ + do_scalar_cmp(env, xa, xb, BF(opcode), false); } =20 -VSX_SCALAR_CMP(xscmpodp, 1) -VSX_SCALAR_CMP(xscmpudp, 0) +static inline void do_scalar_cmpq(CPUPPCState *env, ppc_vsr_t *xa, + ppc_vsr_t *xb, int crf_idx, bool ordered) +{ + uint32_t cc =3D 0; + bool vxsnan_flag =3D false, vxvc_flag =3D false; + + helper_reset_fpstatus(env); + + if (float128_is_signaling_nan(xa->f128, &env->fp_status) || + float128_is_signaling_nan(xb->f128, &env->fp_status)) { + vxsnan_flag =3D true; + cc =3D CRF_SO; + if (fpscr_ve =3D=3D 0 && ordered) { + vxvc_flag =3D true; + } + } else if (float128_is_quiet_nan(xa->f128, &env->fp_status) || + float128_is_quiet_nan(xb->f128, &env->fp_status)) { + cc =3D CRF_SO; + if (ordered) { + vxvc_flag =3D true; + } + } + if (vxsnan_flag) { + float_invalid_op_vxsnan(env, GETPC()); + } + if (vxvc_flag) { + float_invalid_op_vxvc(env, 0, GETPC()); + } + + switch (float128_compare(xa->f128, xb->f128, &env->fp_status)) { + case float_relation_less: + cc |=3D CRF_LT; + break; + case float_relation_equal: + cc |=3D CRF_EQ; + break; + case float_relation_greater: + cc |=3D CRF_GT; + break; + case float_relation_unordered: + cc |=3D CRF_SO; + break; + } =20 -#define VSX_SCALAR_CMPQ(op, ordered) \ -void helper_##op(CPUPPCState *env, uint32_t opcode, \ - ppc_vsr_t *xa, ppc_vsr_t *xb) \ -{ \ - uint32_t cc =3D 0; \ - bool vxsnan_flag =3D false, vxvc_flag =3D false; = \ - \ - helper_reset_fpstatus(env); \ - \ - if (float128_is_signaling_nan(xa->f128, &env->fp_status) || \ - float128_is_signaling_nan(xb->f128, &env->fp_status)) { \ - vxsnan_flag =3D true; \ - cc =3D CRF_SO; \ - if (fpscr_ve =3D=3D 0 && ordered) { = \ - vxvc_flag =3D true; \ - } \ - } else if (float128_is_quiet_nan(xa->f128, &env->fp_status) || \ - float128_is_quiet_nan(xb->f128, &env->fp_status)) { \ - cc =3D CRF_SO; \ - if (ordered) { \ - vxvc_flag =3D true; \ - } \ - } \ - if (vxsnan_flag) { \ - float_invalid_op_vxsnan(env, GETPC()); \ - } \ - if (vxvc_flag) { \ - float_invalid_op_vxvc(env, 0, GETPC()); \ - } \ - \ - switch (float128_compare(xa->f128, xb->f128, &env->fp_status)) { \ - case float_relation_less: \ - cc |=3D CRF_LT; \ - break; \ - case float_relation_equal: \ - cc |=3D CRF_EQ; \ - break; \ - case float_relation_greater: \ - cc |=3D CRF_GT; \ - break; \ - case float_relation_unordered: \ - cc |=3D CRF_SO; \ - break; \ - } \ - \ - env->fpscr &=3D ~FP_FPCC; \ - env->fpscr |=3D cc << FPSCR_FPCC; \ - env->crf[BF(opcode)] =3D cc; \ - \ - do_float_check_status(env, GETPC()); \ + env->fpscr &=3D ~FP_FPCC; + env->fpscr |=3D cc << FPSCR_FPCC; + env->crf[crf_idx] =3D cc; + + do_float_check_status(env, GETPC()); +} + +void helper_xscmpoqp(CPUPPCState *env, uint32_t opcode, ppc_vsr_t *xa, + ppc_vsr_t *xb) +{ + do_scalar_cmpq(env, xa, xb, BF(opcode), true); } =20 -VSX_SCALAR_CMPQ(xscmpoqp, 1) -VSX_SCALAR_CMPQ(xscmpuqp, 0) +void helper_xscmpuqp(CPUPPCState *env, uint32_t opcode, ppc_vsr_t *xa, + ppc_vsr_t *xb) +{ + do_scalar_cmpq(env, xa, xb, BF(opcode), false); +} =20 /* * VSX_MAX_MIN - VSX floating point maximum/minimum --=20 2.27.0 From nobody Sun Feb 8 00:50:03 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=gmail.com ARC-Seal: i=1; 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Tue, 10 Nov 2020 02:55:27 -0800 (PST) From: LemonBoy To: qemu-devel@nongnu.org Subject: [PATCH v2 3/4] ppc/translate: Delay NaN checking after comparison Date: Tue, 10 Nov 2020 11:53:20 +0100 Message-Id: <20201110105321.25889-4-thatlemon@gmail.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201110105321.25889-1-thatlemon@gmail.com> References: <20201110105321.25889-1-thatlemon@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::344; envelope-from=thatlemon@gmail.com; helo=mail-wm1-x344.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, 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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: LemonBoy , richard.henderson@linaro.org, qemu-ppc@nongnu.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Since we always perform a comparison between the two operands avoid checking for NaN unless the result states they're unordered. Suggested-by: Richard Henderson Signed-off-by: Giuseppe Musacchio Reviewed-by: Richard Henderson --- target/ppc/fpu_helper.c | 82 +++++++++++++++++++++-------------------- 1 file changed, 42 insertions(+), 40 deletions(-) diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c index c74c080c17..315959f681 100644 --- a/target/ppc/fpu_helper.c +++ b/target/ppc/fpu_helper.c @@ -2475,25 +2475,6 @@ static inline void do_scalar_cmp(CPUPPCState *env, p= pc_vsr_t *xa, ppc_vsr_t *xb, =20 helper_reset_fpstatus(env); =20 - if (float64_is_signaling_nan(xa->VsrD(0), &env->fp_status) || - float64_is_signaling_nan(xb->VsrD(0), &env->fp_status)) { - vxsnan_flag =3D true; - if (fpscr_ve =3D=3D 0 && ordered) { - vxvc_flag =3D true; - } - } else if (float64_is_quiet_nan(xa->VsrD(0), &env->fp_status) || - float64_is_quiet_nan(xb->VsrD(0), &env->fp_status)) { - if (ordered) { - vxvc_flag =3D true; - } - } - if (vxsnan_flag) { - float_invalid_op_vxsnan(env, GETPC()); - } - if (vxvc_flag) { - float_invalid_op_vxvc(env, 0, GETPC()); - } - switch (float64_compare(xa->VsrD(0), xb->VsrD(0), &env->fp_status)) { case float_relation_less: cc |=3D CRF_LT; @@ -2506,6 +2487,27 @@ static inline void do_scalar_cmp(CPUPPCState *env, p= pc_vsr_t *xa, ppc_vsr_t *xb, break; case float_relation_unordered: cc |=3D CRF_SO; + + if (float64_is_signaling_nan(xa->VsrD(0), &env->fp_status) || + float64_is_signaling_nan(xb->VsrD(0), &env->fp_status)) { + vxsnan_flag =3D true; + if (fpscr_ve =3D=3D 0 && ordered) { + vxvc_flag =3D true; + } + } else if (float64_is_quiet_nan(xa->VsrD(0), &env->fp_status) || + float64_is_quiet_nan(xb->VsrD(0), &env->fp_status)) { + if (ordered) { + vxvc_flag =3D true; + } + } + + if (vxsnan_flag) { + float_invalid_op_vxsnan(env, GETPC()); + } + if (vxvc_flag) { + float_invalid_op_vxvc(env, 0, GETPC()); + } + break; } =20 @@ -2536,27 +2538,6 @@ static inline void do_scalar_cmpq(CPUPPCState *env, = ppc_vsr_t *xa, =20 helper_reset_fpstatus(env); =20 - if (float128_is_signaling_nan(xa->f128, &env->fp_status) || - float128_is_signaling_nan(xb->f128, &env->fp_status)) { - vxsnan_flag =3D true; - cc =3D CRF_SO; - if (fpscr_ve =3D=3D 0 && ordered) { - vxvc_flag =3D true; - } - } else if (float128_is_quiet_nan(xa->f128, &env->fp_status) || - float128_is_quiet_nan(xb->f128, &env->fp_status)) { - cc =3D CRF_SO; - if (ordered) { - vxvc_flag =3D true; - } - } - if (vxsnan_flag) { - float_invalid_op_vxsnan(env, GETPC()); - } - if (vxvc_flag) { - float_invalid_op_vxvc(env, 0, GETPC()); - } - switch (float128_compare(xa->f128, xb->f128, &env->fp_status)) { case float_relation_less: cc |=3D CRF_LT; @@ -2569,6 +2550,27 @@ static inline void do_scalar_cmpq(CPUPPCState *env, = ppc_vsr_t *xa, break; case float_relation_unordered: cc |=3D CRF_SO; + + if (float128_is_signaling_nan(xa->f128, &env->fp_status) || + float128_is_signaling_nan(xb->f128, &env->fp_status)) { + vxsnan_flag =3D true; + if (fpscr_ve =3D=3D 0 && ordered) { + vxvc_flag =3D true; + } + } else if (float128_is_quiet_nan(xa->f128, &env->fp_status) || + float128_is_quiet_nan(xb->f128, &env->fp_status)) { + if (ordered) { + vxvc_flag =3D true; + } + } + + if (vxsnan_flag) { + float_invalid_op_vxsnan(env, GETPC()); + } + if (vxvc_flag) { + float_invalid_op_vxvc(env, 0, GETPC()); + } + break; } =20 --=20 2.27.0 From nobody Sun Feb 8 00:50:03 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1605005966; cv=none; d=zohomail.com; s=zohoarc; b=heNVZIHqP3EEcc1iL7OsUuUJog8HPmt6/dXY4msp9mbmthT9fltte2zTrbmhxa8kwT1xAfjGgI4q/FVrCMGiwKnZnv44wgAqV++oMd5D7I1bJINUpSqvpQ3OSi/fuPNSbNKV3rN+HTN+lgz78pqe5MRmAKL7iBip785PZAHqxu4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1605005966; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::442; envelope-from=thatlemon@gmail.com; helo=mail-wr1-x442.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, 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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: LemonBoy , richard.henderson@linaro.org, qemu-ppc@nongnu.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" The PowerISA reference states that the comparison operators update the FPCC, CR and FPSCR and, if VE=3D1, jump to the exception handler. Moving the exception-triggering code after the CC update sequence solves the problem. Signed-off-by: Giuseppe Musacchio Reviewed-by: Richard Henderson --- target/ppc/fpu_helper.c | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-) diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c index 315959f681..c851ac8f5a 100644 --- a/target/ppc/fpu_helper.c +++ b/target/ppc/fpu_helper.c @@ -2501,13 +2501,6 @@ static inline void do_scalar_cmp(CPUPPCState *env, p= pc_vsr_t *xa, ppc_vsr_t *xb, } } =20 - if (vxsnan_flag) { - float_invalid_op_vxsnan(env, GETPC()); - } - if (vxvc_flag) { - float_invalid_op_vxvc(env, 0, GETPC()); - } - break; } =20 @@ -2515,6 +2508,13 @@ static inline void do_scalar_cmp(CPUPPCState *env, p= pc_vsr_t *xa, ppc_vsr_t *xb, env->fpscr |=3D cc << FPSCR_FPCC; env->crf[crf_idx] =3D cc; =20 + if (vxsnan_flag) { + float_invalid_op_vxsnan(env, GETPC()); + } + if (vxvc_flag) { + float_invalid_op_vxvc(env, 0, GETPC()); + } + do_float_check_status(env, GETPC()); } =20 @@ -2564,13 +2564,6 @@ static inline void do_scalar_cmpq(CPUPPCState *env, = ppc_vsr_t *xa, } } =20 - if (vxsnan_flag) { - float_invalid_op_vxsnan(env, GETPC()); - } - if (vxvc_flag) { - float_invalid_op_vxvc(env, 0, GETPC()); - } - break; } =20 @@ -2578,6 +2571,13 @@ static inline void do_scalar_cmpq(CPUPPCState *env, = ppc_vsr_t *xa, env->fpscr |=3D cc << FPSCR_FPCC; env->crf[crf_idx] =3D cc; =20 + if (vxsnan_flag) { + float_invalid_op_vxsnan(env, GETPC()); + } + if (vxvc_flag) { + float_invalid_op_vxvc(env, 0, GETPC()); + } + do_float_check_status(env, GETPC()); } =20 --=20 2.27.0