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Wed, 15 Nov 2023 03:02:41 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6CDF22004B; Wed, 15 Nov 2023 03:02:41 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4724F20040; Wed, 15 Nov 2023 03:02:40 +0000 (GMT) Received: from genoa.aus.stglabs.ibm.com (unknown [9.40.192.157]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 15 Nov 2023 03:02:40 +0000 (GMT) From: Jiufu Guo To: gcc-patches@gcc.gnu.org Cc: segher@kernel.crashing.org, dje.gcc@gmail.com, linkw@gcc.gnu.org, bergner@linux.ibm.com, guojiufu@linux.ibm.com Subject: [PATCH V2 2/3] Using pli to split 34bits constant Date: Wed, 15 Nov 2023 11:02:36 +0800 Message-Id: <20231115030237.1188073-2-guojiufu@linux.ibm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231115030237.1188073-1-guojiufu@linux.ibm.com> References: <20231115030237.1188073-1-guojiufu@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: y3xqAGJhxtj0t_k_mwYf5SZ_Qn0cc-N- X-Proofpoint-GUID: jNHZszFEod1lBf8DH_2G02j31EGcqDYU Content-Transfer-Encoding: 8bit X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-15_01,2023-11-14_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 phishscore=0 impostorscore=0 adultscore=0 priorityscore=1501 mlxscore=0 bulkscore=0 lowpriorityscore=0 clxscore=1015 mlxlogscore=999 malwarescore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311150024 X-Spam-Status: No, score=-10.8 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,GIT_PATCH_0,KAM_SHORT,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,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 List-Id: Hi, For constants with 16bit values, 'li or lis' can be used to generate the value. For 34bit constant, 'pli' is ok to generate the value. For example: 0x6666666666666666ULL, "pli 3,1717986918; rldimi 3,3,32,0" can be used. Compare with previous: https://gcc.gnu.org/pipermail/gcc-patches/2023-October/634196.html This verion updates a testcase to cover this functionality. Bootstrap®test pass on ppc64{,le}. Is this ok for trunk? BR, Jeff (Jiufu Guo) gcc/ChangeLog: * config/rs6000/rs6000.cc (rs6000_emit_set_long_const): Add code to use pli for 34bit constant. gcc/testsuite/ChangeLog: * gcc.target/powerpc/pr93012.c: Update to check pli. --- gcc/config/rs6000/rs6000.cc | 9 +++++++++ gcc/testsuite/gcc.target/powerpc/pr93012.c | 1 + 2 files changed, 10 insertions(+) diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc index ba40dd6eee4..b277c52687b 100644 --- a/gcc/config/rs6000/rs6000.cc +++ b/gcc/config/rs6000/rs6000.cc @@ -10504,6 +10504,15 @@ rs6000_emit_set_long_const (rtx dest, HOST_WIDE_INT c, int *num_insns) return; \ } + if (TARGET_PREFIXED && SIGNED_INTEGER_34BIT_P (c)) + { + /* li/lis/pli */ + ADJUST_INSN_NUM_AND_RET (1); + + emit_move_insn (dest, GEN_INT (c)); + return; + } + if ((ud4 == 0xffff && ud3 == 0xffff && ud2 == 0xffff && (ud1 & 0x8000)) || (ud4 == 0 && ud3 == 0 && ud2 == 0 && !(ud1 & 0x8000))) { diff --git a/gcc/testsuite/gcc.target/powerpc/pr93012.c b/gcc/testsuite/gcc.target/powerpc/pr93012.c index 4f764d0576f..a07ff764bbf 100644 --- a/gcc/testsuite/gcc.target/powerpc/pr93012.c +++ b/gcc/testsuite/gcc.target/powerpc/pr93012.c @@ -10,4 +10,5 @@ unsigned long long mskh1() { return 0xffff9234ffff9234ULL; } unsigned long long mskl1() { return 0x2bcdffff2bcdffffULL; } unsigned long long mskse() { return 0xffff1234ffff1234ULL; } +/* { dg-final { scan-assembler-times {\mpli\M} 4 { target has_arch_pwr10 }} } */ /* { dg-final { scan-assembler-times {\mrldimi\M} 7 } } */ -- 2.25.1