From patchwork Sat May 22 00:22:27 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: 43537 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 54FDA3AA9420; Sat, 22 May 2021 00:23:47 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 54FDA3AA9420 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1621643027; bh=beOzclESHCA7i6M29KjCpbFrO6Mzb31pxLzL0wN3cow=; 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=T54f5WVSHdJQEn+X9NnaePkDHlmMeF7lGVMBSWD5Y7lmjW46G/IKTxss9LmvAX78C RyOTTyKQeKcpL4izSbtm3FVySU+cagvLA/UFLobbmH9P9HKmmbC+fWg67i5qR2eINa 8WWYMPNGqsIoJU/gU+4crG3KVJaxqkY0N81NP3tg= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from mail-pf1-x436.google.com (mail-pf1-x436.google.com [IPv6:2607:f8b0:4864:20::436]) by sourceware.org (Postfix) with ESMTPS id 90E0E3847837 for ; Sat, 22 May 2021 00:23:42 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 90E0E3847837 Received: by mail-pf1-x436.google.com with SMTP id e17so5496438pfl.5 for ; Fri, 21 May 2021 17:23:42 -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=beOzclESHCA7i6M29KjCpbFrO6Mzb31pxLzL0wN3cow=; b=JCxGBs1L7hThj0FtzSN1uBbJzpgEuAAAteL2aZcwevg9k6YbW4bA5w7kPRCWDCqH+q fimGXfcYMYb10HjzVG80ZnAdF3/RqRaTSm3fIQvxs5srNQxcAmq6I08zm9Vl5XdSdk9J xfFuNXCncfbHtdUHHyjJieJxQx2yScs4doc5iNKTI7BW+fsDtRn4Z+GLszi7GKObbaYf MpX6sNAXQ9Qjm+aCFV/4Q7M84Yntv0OKnGySXjI4GaWXeD/f5iPzG8nqWPWEd/gXmSL4 ED8jbbJMGTjaQkwQGBRHYDKBQFrn707uwwGqLf1LGRrktKQVJldDebHXap4iTkfYoC3c fNBg== X-Gm-Message-State: AOAM531eDlwHZ8+gOdpUUNgaK+zIpoXMjLJKHv2Ex5SYf2D6D79UBw7B RNYIxCfC3cRqvGz0/jpaCIl2o1q8GuunSw== X-Google-Smtp-Source: ABdhPJww/ivhkvJFbr2tNRxLj0a+TprAb91M1RPqojfAxwN+1ZJJloEX4ViYWbVehquXAKVMqgnrMA== X-Received: by 2002:a62:ae19:0:b029:2d9:11cf:5da7 with SMTP id q25-20020a62ae190000b02902d911cf5da7mr13009071pff.18.1621643021461; Fri, 21 May 2021 17:23:41 -0700 (PDT) Received: from fragrant.. (220-135-3-239.HINET-IP.hinet.net. [220.135.3.239]) by smtp.gmail.com with ESMTPSA id d3sm9256156pjw.35.2021.05.21.17.23.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 May 2021 17:23:41 -0700 (PDT) To: libc-alpha@sourceware.org Subject: [PATCH v6 3/3] Use GCC builtins for roundeven functions if desired. Date: Sat, 22 May 2021 08:22:27 +0800 Message-Id: <20210522002227.2234377-3-ibmibmibm.tw@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210522002227.2234377-1-ibmibmibm.tw@gmail.com> References: <20210522002227.2234377-1-ibmibmibm.tw@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-13.8 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 --- 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/flt-32/s_roundevenf.c | 5 +++++ sysdeps/ieee754/ldbl-128/s_roundevenl.c | 5 +++++ 5 files changed, 20 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/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)