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Tue, 21 Nov 2023 08:30:21 GMT Received: from smtpav01.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2B11C5805B; Tue, 21 Nov 2023 08:30:21 +0000 (GMT) Received: from smtpav01.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CDFC158059; Tue, 21 Nov 2023 08:30:18 +0000 (GMT) Received: from [9.43.7.24] (unknown [9.43.7.24]) by smtpav01.wdc07v.mail.ibm.com (Postfix) with ESMTP; Tue, 21 Nov 2023 08:30:18 +0000 (GMT) Message-ID: <033c8799-cbdf-4d57-8d96-af33841d1a4f@linux.ibm.com> Date: Tue, 21 Nov 2023 14:00:17 +0530 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: gcc-patches Cc: Richard Biener , Jeff Law , Segher Boessenkool , Peter Bergner From: Ajit Agarwal Subject: [PATCH] rtl-optimization: Modify loop live data with livein of loop header Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: ecm5RTB6r_72Wa19JGyhpuuGPotQbYF- X-Proofpoint-ORIG-GUID: lqyOkQkuRBA_0eygLqkJ9TlJm7eNMCUu 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=2023-11-21_03,2023-11-20_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 phishscore=0 adultscore=0 suspectscore=0 malwarescore=0 lowpriorityscore=0 clxscore=1015 mlxscore=0 impostorscore=0 mlxlogscore=808 priorityscore=1501 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311210065 X-Spam-Status: No, score=-12.8 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,GIT_PATCH_0,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: Hello All: This patch marked LOOP_DATA->live as the livein at the loop header basic block. This is because Livein at each basic block is live in at the loop header. Bootstrapped and regtested on powerpc64-linux-gnu. SPEC CPU 2017 benchmarks score is better than trunk wit this change for INT and FP benchmarks. THanks & Regards Ajit rtl-optimization: Modify loop live data with livein of loop header Livein at each basic block is live in at the loop header. Marked LOOP_DATA->live as the livein at the loop header basic block. 2023-11-21 Ajit Kumar Agarwal gcc/ChangeLog: * loop-invariant.cc (calculate_loop_reg_pressure): Mark LOOP_DATA->live as the livein at the loop header basic block. --- gcc/loop-invariant.cc | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/gcc/loop-invariant.cc b/gcc/loop-invariant.cc index a9b156682bc..c15e6168d5d 100644 --- a/gcc/loop-invariant.cc +++ b/gcc/loop-invariant.cc @@ -2169,17 +2169,18 @@ calculate_loop_reg_pressure (void) } ira_setup_eliminable_regset (); bitmap_initialize (&curr_regs_live, ®_obstack); + + /* Livein (loop_hdr) is live at each of the loop basic blocks. */ + for (auto loop : loops_list (cfun, 0)) + if (loop->aux == NULL) + bitmap_ior_into (&LOOP_DATA (loop)->regs_live, DF_LR_IN (loop->header)); + FOR_EACH_BB_FN (bb, cfun) { curr_loop = bb->loop_father; if (curr_loop == current_loops->tree_root) continue; - for (class loop *loop = curr_loop; - loop != current_loops->tree_root; - loop = loop_outer (loop)) - bitmap_ior_into (&LOOP_DATA (loop)->regs_live, DF_LR_IN (bb)); - bitmap_copy (&curr_regs_live, DF_LR_IN (bb)); for (i = 0; i < ira_pressure_classes_num; i++) curr_reg_pressure[ira_pressure_classes[i]] = 0; -- 2.39.3