From patchwork Fri Nov 4 14:37:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xi Ruoyao X-Patchwork-Id: 59937 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 8D97D3858432 for ; Fri, 4 Nov 2022 14:38:12 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 8D97D3858432 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1667572692; bh=bosiCVjj2yO2obtNQffSWQrnsMabf40XpvaqldYW4kk=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:Cc:From; b=AcR3YtDivuwnrtCgwMc/xibgdT5qVLwXuovegc8u8jOiVj+GSy/CxzQ1QAyLhG30b zQAaaftgj/Q6UJ+pn8dJkegZlCqWDcuhwUtJuPbnTMzhntShtKNvQwNPVjrDtbekrn 6s/lqytZ5Wk3fzWQvcwhfBt+hsvsEypaZ2YPjpY8= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from xry111.site (xry111.site [IPv6:2001:470:683e::1]) by sourceware.org (Postfix) with ESMTPS id D47F93858413 for ; Fri, 4 Nov 2022 14:37:38 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org D47F93858413 Received: from xry111-x57s1.. (unknown [IPv6:240e:358:11ed:a500:dc73:854d:832e:4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384) (Client did not present a certificate) (Authenticated sender: xry111@xry111.site) by xry111.site (Postfix) with ESMTPSA id 7787766807; Fri, 4 Nov 2022 10:37:33 -0400 (EDT) To: gcc-patches@gcc.gnu.org Subject: [PATCH] LoongArch: Add fcopysign instructions Date: Fri, 4 Nov 2022 22:37:19 +0800 Message-Id: <20221104143719.1709284-1-xry111@xry111.site> X-Mailer: git-send-email 2.38.1 MIME-Version: 1.0 X-Spam-Status: No, score=-6.5 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FROM_SUSPICIOUS_NTLD, FROM_SUSPICIOUS_NTLD_FP, GIT_PATCH_0, KAM_SHORT, LIKELY_SPAM_FROM, PDS_OTHER_BAD_TLD, SPF_HELO_PASS, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Xi Ruoyao via Gcc-patches From: Xi Ruoyao Reply-To: Xi Ruoyao Cc: Chenghua Xu , Xiaolin Tang , Lulu Cheng , Wang Xuerui Errors-To: gcc-patches-bounces+patchwork=sourceware.org@gcc.gnu.org Sender: "Gcc-patches" Add fcopysign.{s,d} with the names copysign{sf,df}3 so GCC will expand __builtin_copysign{f,} to a single instruction. Link: https://sourceware.org/pipermail/libc-alpha/2022-November/143177.html gcc/ChangeLog: * config/loongarch/loongarch.md (UNSPEC_FCOPYSIGN): New unspec. (type): Add fcopysign. (copysign3): New instruction template. gcc/testsuite/ChangeLog: * gcc.target/loongarch/fcopysign.c: New test. --- Bootstrapped and regtested on loongarch64-linux-gnu. Ok for trunk? gcc/config/loongarch/loongarch.md | 22 ++++++++++++++++++- .../gcc.target/loongarch/fcopysign.c | 16 ++++++++++++++ 2 files changed, 37 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/gcc.target/loongarch/fcopysign.c diff --git a/gcc/config/loongarch/loongarch.md b/gcc/config/loongarch/loongarch.md index 214b14bddd3..042e6e74491 100644 --- a/gcc/config/loongarch/loongarch.md +++ b/gcc/config/loongarch/loongarch.md @@ -37,6 +37,7 @@ (define_c_enum "unspec" [ UNSPEC_FCLASS UNSPEC_FMAX UNSPEC_FMIN + UNSPEC_FCOPYSIGN ;; Override return address for exception handling. UNSPEC_EH_RETURN @@ -214,6 +215,7 @@ (define_attr "qword_mode" "no,yes" ;; fabs floating point absolute value ;; fneg floating point negation ;; fcmp floating point compare +;; fcopysign floating point copysign ;; fcvt floating point convert ;; fsqrt floating point square root ;; frsqrt floating point reciprocal square root @@ -226,7 +228,7 @@ (define_attr "type" "unknown,branch,jump,call,load,fpload,fpidxload,store,fpstore,fpidxstore, prefetch,prefetchx,condmove,mgtf,mftg,const,arith,logical, shift,slt,signext,clz,trap,imul,idiv,move, - fmove,fadd,fmul,fmadd,fdiv,frdiv,fabs,fneg,fcmp,fcvt,fsqrt, + fmove,fadd,fmul,fmadd,fdiv,frdiv,fabs,fneg,fcmp,fcopysign,fcvt,fsqrt, frsqrt,accext,accmod,multi,atomic,syncloop,nop,ghost" (cond [(eq_attr "jirl" "!unset") (const_string "call") (eq_attr "got" "load") (const_string "load") @@ -976,6 +978,24 @@ (define_insn "abs2" (set_attr "mode" "")]) ;; +;; .................... +;; +;; FLOATING POINT COPYSIGN +;; +;; .................... + +(define_insn "copysign3" + [(set (match_operand:ANYF 0 "register_operand" "=f") + (unspec:ANYF [(match_operand:ANYF 1 "register_operand" "f") + (match_operand:ANYF 2 "register_operand" "f")] + UNSPEC_FCOPYSIGN))] + "" + "fcopysign.\t%0,%1,%2" + [(set_attr "type" "fcopysign") + (set_attr "mode" "")]) + + +;; ;; ................... ;; ;; Count leading zeroes. diff --git a/gcc/testsuite/gcc.target/loongarch/fcopysign.c b/gcc/testsuite/gcc.target/loongarch/fcopysign.c new file mode 100644 index 00000000000..058ba2cf573 --- /dev/null +++ b/gcc/testsuite/gcc.target/loongarch/fcopysign.c @@ -0,0 +1,16 @@ +/* { dg-do compile } */ +/* { dg-options "-mdouble-float" } */ +/* { dg-final { scan-assembler "fcopysign\\.s" } } */ +/* { dg-final { scan-assembler "fcopysign\\.d" } } */ + +double +my_copysign (double a, double b) +{ + return __builtin_copysign (a, b); +} + +float +my_copysignf (float a, float b) +{ + return __builtin_copysignf (a, b); +}