From patchwork Mon May 24 01:43:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?6Kyd5piH6YGUKFNoZW4tVGEgSHNpZWgp?= X-Patchwork-Id: 43552 X-Patchwork-Delegate: hjl.tools@gmail.com Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id B9E1938515F6; Mon, 24 May 2021 01:43:40 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B9E1938515F6 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1621820620; bh=RxbNxKam7TYtYVZnBjYe7iy6eZtloBF7mxu7tdQtMFI=; h=To:Subject:Date:In-Reply-To:References:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=EZJoQk92JRNP9DT4QNUoxDoKc5udkG1Y0TQ1aco25gH0fTM6JYnMESVARp28JDIcT kOpDZjoEdRNyu0mhZ8MOL03e+XCmbHeS+dzQWYbj/r3j2CmDvEvEGV8Z4bBtRSGav8 /5liFGUV4YgEqlH5DPVS3zLpatYVIxcZl55USldo= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from mail-pf1-x434.google.com (mail-pf1-x434.google.com [IPv6:2607:f8b0:4864:20::434]) by sourceware.org (Postfix) with ESMTPS id 01A933851C0F for ; Mon, 24 May 2021 01:43:38 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 01A933851C0F Received: by mail-pf1-x434.google.com with SMTP id d78so18663934pfd.10 for ; Sun, 23 May 2021 18:43:37 -0700 (PDT) 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=RxbNxKam7TYtYVZnBjYe7iy6eZtloBF7mxu7tdQtMFI=; b=CqdqPyZ9PVsw6MJirS8r68kzcl+P9yZQoR7Hk7D4tkupssOjE7qU3KayUYB7uO1erd DqFWCYE2gjpbHeYPJ8R0S5Wyv6Yq+sPhyvL2GK72KtWj13JA+r+fcZgAi7ijQEWjUZ0s fGFk8R48xocfBFfP2Iar2PJDrpk3On7rwZ3gzsjwA72p1L6mstcUAiWMr/Y41Ppz79V4 GhRT4x6Ix65sW/3Z4vPxlvV0aDzvn6yQudR5uOH5k458cZSuNB8OTqZSgTYYfLeUO+a5 yyrOZjKrd7MvDnjFjCSTtmapOc5D3jxDixUPbzUb4FIqGYAYDpys4jLmxXKHEihaFiD7 pnvQ== X-Gm-Message-State: AOAM531KNbCuYc945gkE0WPQSIVbKsJKg2UvvDrYLVBSCMTOBZ6IXyPr fH8xvj+tZIZWhPaCH+7tivHTwhA/hpNMOw== X-Google-Smtp-Source: ABdhPJw6+73DxBUeZtOUNmVXnhpeDssh21K+cW2akniKeGeT3JxuWh8KJFE9HHtQ8B1LpULPNXvlHQ== X-Received: by 2002:a63:5fc5:: with SMTP id t188mr11030204pgb.228.1621820616894; Sun, 23 May 2021 18:43:36 -0700 (PDT) Received: from fragrant.. (220-135-3-239.HINET-IP.hinet.net. [220.135.3.239]) by smtp.gmail.com with ESMTPSA id k13sm9471527pfg.31.2021.05.23.18.43.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 23 May 2021 18:43:36 -0700 (PDT) To: libc-alpha@sourceware.org Subject: [PATCH v7 3/3] Use GCC builtins for roundeven functions if desired. Date: Mon, 24 May 2021 09:43:12 +0800 Message-Id: <20210524014312.4111807-3-ibmibmibm.tw@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210524014312.4111807-1-ibmibmibm.tw@gmail.com> References: <20210524014312.4111807-1-ibmibmibm.tw@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-13.2 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GIT_PATCH_0, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Shen-Ta Hsieh via Libc-alpha From: =?utf-8?b?6Kyd5piH6YGUKFNoZW4tVGEgSHNpZWgp?= Reply-To: Shen-Ta Hsieh Cc: Shen-Ta Hsieh Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" This patch is using the corresponding GCC builtin for roundevenf, roundeven and roundevenl if the USE_FUNCTION_BUILTIN macros are defined to one in math-use-builtins.h. These builtin functions is supported since GCC 10. The code of the generic implementation is not changed. Signed-off-by: Shen-Ta Hsieh Reviewed-by: H.J. Lu --- sysdeps/generic/math-use-builtins-roundeven.h | 4 ++++ sysdeps/generic/math-use-builtins.h | 1 + sysdeps/ieee754/dbl-64/s_roundeven.c | 5 +++++ sysdeps/ieee754/float128/float128_private.h | 2 ++ sysdeps/ieee754/flt-32/s_roundevenf.c | 5 +++++ sysdeps/ieee754/ldbl-128/s_roundevenl.c | 5 +++++ 6 files changed, 22 insertions(+) create mode 100644 sysdeps/generic/math-use-builtins-roundeven.h diff --git a/sysdeps/generic/math-use-builtins-roundeven.h b/sysdeps/generic/math-use-builtins-roundeven.h new file mode 100644 index 0000000000..bd2e84c93f --- /dev/null +++ b/sysdeps/generic/math-use-builtins-roundeven.h @@ -0,0 +1,4 @@ +#define USE_ROUNDEVEN_BUILTIN 0 +#define USE_ROUNDEVENF_BUILTIN 0 +#define USE_ROUNDEVENL_BUILTIN 0 +#define USE_ROUNDEVENF128_BUILTIN 0 diff --git a/sysdeps/generic/math-use-builtins.h b/sysdeps/generic/math-use-builtins.h index cc3e9f2201..19d2d1cf3c 100644 --- a/sysdeps/generic/math-use-builtins.h +++ b/sysdeps/generic/math-use-builtins.h @@ -30,6 +30,7 @@ #include #include #include +#include #include #include #include diff --git a/sysdeps/ieee754/dbl-64/s_roundeven.c b/sysdeps/ieee754/dbl-64/s_roundeven.c index 5deff3bb8a..88c051e9fe 100644 --- a/sysdeps/ieee754/dbl-64/s_roundeven.c +++ b/sysdeps/ieee754/dbl-64/s_roundeven.c @@ -21,6 +21,7 @@ #include #include #include +#include #define BIAS 0x3ff #define MANT_DIG 53 @@ -29,6 +30,9 @@ double __roundeven (double x) { +#if USE_ROUNDEVEN_BUILTIN + return __builtin_roundeven (x); +#else uint64_t ix, ux; EXTRACT_WORDS64 (ix, x); ux = ix & 0x7fffffffffffffffULL; @@ -66,6 +70,7 @@ __roundeven (double x) ix &= 0x8000000000000000ULL; INSERT_WORDS64 (x, ix); return x; +#endif /* ! USE_ROUNDEVEN_BUILTIN */ } #ifndef __roundeven libm_alias_double (__roundeven, roundeven) diff --git a/sysdeps/ieee754/float128/float128_private.h b/sysdeps/ieee754/float128/float128_private.h index 979138851b..b6b6d3d5fd 100644 --- a/sysdeps/ieee754/float128/float128_private.h +++ b/sysdeps/ieee754/float128/float128_private.h @@ -152,6 +152,8 @@ #define USE_TRUNCL_BUILTIN USE_TRUNCF128_BUILTIN #undef USE_ROUNDL_BUILTIN #define USE_ROUNDL_BUILTIN USE_ROUNDF128_BUILTIN +#undef USE_ROUNDEVENL_BUILTIN +#define USE_ROUNDEVENL_BUILTIN USE_ROUNDEVENF128_BUILTIN #undef USE_COPYSIGNL_BUILTIN #define USE_COPYSIGNL_BUILTIN USE_COPYSIGNF128_BUILTIN #undef USE_FMAL_BUILTIN diff --git a/sysdeps/ieee754/flt-32/s_roundevenf.c b/sysdeps/ieee754/flt-32/s_roundevenf.c index 2cc0d7b001..4f568579d8 100644 --- a/sysdeps/ieee754/flt-32/s_roundevenf.c +++ b/sysdeps/ieee754/flt-32/s_roundevenf.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #define BIAS 0x7f @@ -30,6 +31,9 @@ float __roundevenf (float x) { +#if USE_ROUNDEVENF_BUILTIN + return __builtin_roundevenf (x); +#else uint32_t ix, ux; GET_FLOAT_WORD (ix, x); ux = ix & 0x7fffffff; @@ -67,6 +71,7 @@ __roundevenf (float x) ix &= 0x80000000; SET_FLOAT_WORD (x, ix); return x; +#endif /* ! USE_ROUNDEVENF_BUILTIN */ } #ifndef __roundevenf libm_alias_float (__roundeven, roundeven) diff --git a/sysdeps/ieee754/ldbl-128/s_roundevenl.c b/sysdeps/ieee754/ldbl-128/s_roundevenl.c index 7c9c11fad2..afbf13d4f2 100644 --- a/sysdeps/ieee754/ldbl-128/s_roundevenl.c +++ b/sysdeps/ieee754/ldbl-128/s_roundevenl.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #define BIAS 0x3fff @@ -30,6 +31,9 @@ _Float128 __roundevenl (_Float128 x) { +#if USE_ROUNDEVENL_BUILTIN + return __builtin_roundevenl (x); +#else uint64_t hx, lx, uhx; GET_LDOUBLE_WORDS64 (hx, lx, x); uhx = hx & 0x7fffffffffffffffULL; @@ -101,5 +105,6 @@ __roundevenl (_Float128 x) } SET_LDOUBLE_WORDS64 (x, hx, lx); return x; +#endif /* ! USE_ROUNDEVENL_BUILTIN */ } libm_alias_ldouble (__roundeven, roundeven)