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(unknown [IPv6:240e:358:11b4:ae00: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 0716F66E1A; Sun, 25 Feb 2024 23:28:45 -0500 (EST) From: Xi Ruoyao To: gcc-patches@gcc.gnu.org Cc: chenglulu , i@xen0n.name, xuchenghua@loongson.cn, Xi Ruoyao Subject: [PATCH 1/2] LoongArch: NFC: Deduplicate crc instruction defines Date: Mon, 26 Feb 2024 12:28:03 +0800 Message-ID: <20240226042830.6927-1-xry111@xry111.site> X-Mailer: git-send-email 2.44.0 MIME-Version: 1.0 X-Spam-Status: No, score=-9.2 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, LIKELY_SPAM_FROM, SPF_HELO_PASS, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE 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: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791934360790999112 X-GMAIL-MSGID: 1791934360790999112 Introduce an iterator for UNSPEC_CRC and UNSPEC_CRCC to make the next change easier. gcc/ChangeLog: * config/loongarch/loongarch.md (CRC): New define_int_iterator. (crc): New define_int_attr. (loongarch_crc_w__w, loongarch_crcc_w__w): Unify into ... (loongarch__w__w): ... here. --- gcc/config/loongarch/loongarch.md | 18 +++++------------- 1 file changed, 5 insertions(+), 13 deletions(-) diff --git a/gcc/config/loongarch/loongarch.md b/gcc/config/loongarch/loongarch.md index 2ce7a151880..4ded1b3a117 100644 --- a/gcc/config/loongarch/loongarch.md +++ b/gcc/config/loongarch/loongarch.md @@ -4251,24 +4251,16 @@ (define_peephole2 (define_mode_iterator QHSD [QI HI SI DI]) +(define_int_iterator CRC [UNSPEC_CRC UNSPEC_CRCC]) +(define_int_attr crc [(UNSPEC_CRC "crc") (UNSPEC_CRCC "crcc")]) -(define_insn "loongarch_crc_w__w" +(define_insn "loongarch__w__w" [(set (match_operand:SI 0 "register_operand" "=r") (unspec:SI [(match_operand:QHSD 1 "register_operand" "r") (match_operand:SI 2 "register_operand" "r")] - UNSPEC_CRC))] + CRC))] "" - "crc.w..w\t%0,%1,%2" - [(set_attr "type" "unknown") - (set_attr "mode" "")]) - -(define_insn "loongarch_crcc_w__w" - [(set (match_operand:SI 0 "register_operand" "=r") - (unspec:SI [(match_operand:QHSD 1 "register_operand" "r") - (match_operand:SI 2 "register_operand" "r")] - UNSPEC_CRCC))] - "" - "crcc.w..w\t%0,%1,%2" + ".w..w\t%0,%1,%2" [(set_attr "type" "unknown") (set_attr "mode" "")]) From patchwork Mon Feb 26 04:28:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xi Ruoyao X-Patchwork-Id: 206248 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7300:a81b:b0:108:e6aa:91d0 with SMTP id bq27csp1864812dyb; Sun, 25 Feb 2024 20:30:36 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCUwiOHHfk2XW258gHq20grR/3kDpUhcZB825+vRfSjkiDzSFr27FNbPaD+WfgCD3ndNNW4hvSh+w1xQThyqk8HtbD+mSA== X-Google-Smtp-Source: AGHT+IFi/k44NufL94k9JNSd0Ml5gQfSIIKSukCw2hrf1D/qDXj2hUc2Gw9X9279Rj8O0BdPH0a9 X-Received: by 2002:a05:6214:daa:b0:68f:2bba:7fc0 with SMTP id h10-20020a0562140daa00b0068f2bba7fc0mr8389173qvh.20.1708921836225; Sun, 25 Feb 2024 20:30:36 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1708921836; cv=pass; d=google.com; s=arc-20160816; b=UWUX2s51SbL7PmxbYB/yoZKM2gM4+CYW8msNf4zTpxvTJyJWZK+h7rnbhWvk84e6Nt zLKwHI71hRjP66EmmdhB9d46oszboWFA3IYqqo2JBreBj23AklOv0MFmAwukrTBdg/EK a9wwLA/k8oXpmVu19pb8HIQHQq8rZA78AHoXy2Q88Im0T/1lWvUL/jNmjACZmeuOW0Aa DEhLAUqs3I9anQmfHasPom80oRtGcBaYNmlgpWyc7E7gd0ySIibLoXkO/MaH8CuC4sYU Q5nqA/0tNfwJiy0RJ+GLrVP3BtfGEyr8SoK0ILdff7uyearAmHAgWw98RRn9jIk+b+R6 Oz9w== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature:arc-filter:dmarc-filter:delivered-to; bh=XaIuMpgv2lM0/5OjD6nRw5jYE8fkqLc8c9TcY5p9N1o=; fh=oUCfM/eMlWtMCtZZKY1bglzxCo7b3kw9D5LTFFWuz38=; b=glF8kbHRJRC7/ykDbUtcTibjeF2CcJWMhqskJDB4YBFeBuF3RIU+3o7Jbj/KwgE/lB ZmqblZ3Smg4lCgfDN8/43+S0fgRNCuICSPRj9cStAxaUi+HFnhG7XGY/siYl2P8CfCip rFUkKooFuCOVBqWyJrgLMoCmlxwq7hRbeBbVZV+acir/7iJWui2SYsXECwsEvhehd1pg ZFACcPDSp6oKYhrCAGkzll7FhJYLCFojDHV0mUfaq1I7+R1Khfkk7bJeatRq4lnGEduJ jP4eAQRVv41eSZGIB/75qIhx8v7NuzRghIkQ4cZ5pG5ek9bg9cvlvK4kaGUQu9LzjMlP zLRw==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@xry111.site header.s=default header.b=Q5Cuhoia; arc=pass (i=1); spf=pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 2620:52:3:1:0:246e:9693:128c as permitted sender) smtp.mailfrom="gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org"; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=xry111.site Received: from server2.sourceware.org (server2.sourceware.org. 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(unknown [IPv6:240e:358:11b4:ae00: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 4C02866E1B; Sun, 25 Feb 2024 23:28:48 -0500 (EST) From: Xi Ruoyao To: gcc-patches@gcc.gnu.org Cc: chenglulu , i@xen0n.name, xuchenghua@loongson.cn, Xi Ruoyao Subject: [PATCH 2/2] LoongArch: Remove unneeded sign extension after crc/crcc instructions Date: Mon, 26 Feb 2024 12:28:04 +0800 Message-ID: <20240226042830.6927-2-xry111@xry111.site> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240226042830.6927-1-xry111@xry111.site> References: <20240226042830.6927-1-xry111@xry111.site> MIME-Version: 1.0 X-Spam-Status: No, score=-9.2 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, LIKELY_SPAM_FROM, SPF_HELO_PASS, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE 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: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791934423425780574 X-GMAIL-MSGID: 1791934423425780574 The specification of crc/crcc instructions is clear that the output is sign-extended to GRLEN. Add a define_insn to tell the compiler this fact and allow it to remove the unneeded sign extension on crc/crcc output. As crc/crcc instructions are usually used in a tight loop, this should produce a significant performance gain. gcc/ChangeLog: * config/loongarch/loongarch.md (loongarch__w__w_extended): New define_insn. gcc/testsuite/ChangeLog: * gcc.target/loongarch/crc-sext.c: New test; --- Bootstrapped and regtested on loongarch64-linux-gnu. Ok for trunk? gcc/config/loongarch/loongarch.md | 11 +++++++++++ gcc/testsuite/gcc.target/loongarch/crc-sext.c | 13 +++++++++++++ 2 files changed, 24 insertions(+) create mode 100644 gcc/testsuite/gcc.target/loongarch/crc-sext.c diff --git a/gcc/config/loongarch/loongarch.md b/gcc/config/loongarch/loongarch.md index 4ded1b3a117..525e1e82183 100644 --- a/gcc/config/loongarch/loongarch.md +++ b/gcc/config/loongarch/loongarch.md @@ -4264,6 +4264,17 @@ (define_insn "loongarch__w__w" [(set_attr "type" "unknown") (set_attr "mode" "")]) +(define_insn "loongarch__w__w_extended" + [(set (match_operand:DI 0 "register_operand" "=r") + (sign_extend:DI + (unspec:SI [(match_operand:QHSD 1 "register_operand" "r") + (match_operand:SI 2 "register_operand" "r")] + CRC)))] + "TARGET_64BIT" + ".w..w\t%0,%1,%2" + [(set_attr "type" "unknown") + (set_attr "mode" "")]) + ;; With normal or medium code models, if the only use of a pc-relative ;; address is for loading or storing a value, then relying on linker ;; relaxation is not better than emitting the machine instruction directly. diff --git a/gcc/testsuite/gcc.target/loongarch/crc-sext.c b/gcc/testsuite/gcc.target/loongarch/crc-sext.c new file mode 100644 index 00000000000..9ade5a8e4ca --- /dev/null +++ b/gcc/testsuite/gcc.target/loongarch/crc-sext.c @@ -0,0 +1,13 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -march=loongarch64" } */ +/* { dg-final { check-function-bodies "**" "" } } */ + +/* +**my_crc: +** crc.w.d.w \$r4,\$r4,\$r5 +** jr \$r1 +*/ +int my_crc(long long dword, int crc) +{ + return __builtin_loongarch_crc_w_d_w(dword, crc); +}