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Mon, 12 Dec 2022 01:38:32 GMT Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7528C20043; Mon, 12 Dec 2022 01:38:32 +0000 (GMT) Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 62F3E20040; Mon, 12 Dec 2022 01:38:31 +0000 (GMT) Received: from pike.rch.stglabs.ibm.com (unknown [9.5.12.127]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 12 Dec 2022 01:38:31 +0000 (GMT) To: gcc-patches@gcc.gnu.org Cc: segher@kernel.crashing.org, dje.gcc@gmail.com, linkw@gcc.gnu.org, guojiufu@linux.ibm.com Subject: [PATCH V4 2/2] rs6000: use li;x?oris to build constant Date: Mon, 12 Dec 2022 09:38:29 +0800 Message-Id: <20221212013829.111739-2-guojiufu@linux.ibm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221212013829.111739-1-guojiufu@linux.ibm.com> References: <20221212013829.111739-1-guojiufu@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: -XctY7sf4CY1ON_SaDtb5IWegpOWMgaO X-Proofpoint-GUID: mP6Hg-gmoxM-9gkdR9kVpa-dt0lm37Gs X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-12-10_10,2022-12-08_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 impostorscore=0 mlxlogscore=999 clxscore=1015 priorityscore=1501 malwarescore=0 bulkscore=0 adultscore=0 phishscore=0 spamscore=0 suspectscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2212120013 X-Spam-Status: No, score=-11.8 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, 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: Jiufu Guo via Gcc-patches From: Jiufu Guo Reply-To: Jiufu Guo Errors-To: gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org Sender: "Gcc-patches" X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1751970414967622275?= X-GMAIL-MSGID: =?utf-8?q?1751970416977089958?= Hi, For constant C: If '(c & 0xFFFFFFFF0000FFFFULL) == 0xFFFFFFFF00000000' or say: 32(1) || 1(0) || 15(x) || 16(0), we could use "lis; xoris" to build. Here N(M) means N continuous bit M, x for M means it is ok for either 1 or 0; '||' means concatenation. This patch update rs6000_emit_set_long_const to support those constants. Compare with previous version: https://gcc.gnu.org/pipermail/gcc-patches/2022-December/607618.htm This patch fix conflicts with trunk. Bootstrap and regtest pass on ppc64{,le}. Is this ok for trunk? BR, Jeff (Jiufu) PR target/106708 gcc/ChangeLog: * config/rs6000/rs6000.cc (rs6000_emit_set_long_const): Add to build constants through "lis; xoris". gcc/testsuite/ChangeLog: * gcc.target/powerpc/pr106708.c: Add test function. --- gcc/config/rs6000/rs6000.cc | 7 +++++++ gcc/testsuite/gcc.target/powerpc/pr106708.c | 10 +++++++++- 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc index 8c1192a10c8..1138d5e8cd4 100644 --- a/gcc/config/rs6000/rs6000.cc +++ b/gcc/config/rs6000/rs6000.cc @@ -10251,6 +10251,13 @@ rs6000_emit_set_long_const (rtx dest, HOST_WIDE_INT c) if (ud1 != 0) emit_move_insn (dest, gen_rtx_IOR (DImode, temp, GEN_INT (ud1))); } + else if (ud4 == 0xffff && ud3 == 0xffff && !(ud2 & 0x8000) && ud1 == 0) + { + /* lis; xoris */ + temp = !can_create_pseudo_p () ? dest : gen_reg_rtx (DImode); + emit_move_insn (temp, GEN_INT (sext_hwi ((ud2 | 0x8000) << 16, 32))); + emit_move_insn (dest, gen_rtx_XOR (DImode, temp, GEN_INT (0x80000000))); + } else if (ud4 == 0xffff && ud3 == 0xffff && (ud1 & 0x8000)) { /* li; xoris */ diff --git a/gcc/testsuite/gcc.target/powerpc/pr106708.c b/gcc/testsuite/gcc.target/powerpc/pr106708.c index dc9ceda8367..a015c71e630 100644 --- a/gcc/testsuite/gcc.target/powerpc/pr106708.c +++ b/gcc/testsuite/gcc.target/powerpc/pr106708.c @@ -4,7 +4,7 @@ /* { dg-require-effective-target has_arch_ppc64 } */ long long arr[] - = {0xffffffff7cdeab55LL, 0x98765432LL, 0xabcd0000LL}; += {0xffffffff7cdeab55LL, 0x98765432LL, 0xabcd0000LL, 0xffffffff65430000LL}; void __attribute__ ((__noipa__)) lixoris (long long *arg) { @@ -27,6 +27,13 @@ void __attribute__ ((__noipa__)) lisrldicl (long long *arg) /* { dg-final { scan-assembler-times {\mlis .*,0xabcd\M} 1 } } */ /* { dg-final { scan-assembler-times {\mrldicl .*,0,32\M} 1 } } */ +void __attribute__ ((__noipa__)) lisxoris (long long *arg) +{ + *arg = 0xffffffff65430000LL; +} +/* { dg-final { scan-assembler-times {\mlis .*,0xe543\M} 1 } } */ +/* { dg-final { scan-assembler-times {\mxoris .*0x8000\M} 1 } } */ + int main () { @@ -35,6 +42,7 @@ main () lixoris (a); lioris (a + 1); lisrldicl (a + 2); + lisxoris (a + 3); if (__builtin_memcmp (a, arr, sizeof (arr)) != 0) __builtin_abort (); return 0;