1 /* 2 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "opto/compile.hpp" 27 #include "opto/node.hpp" 28 #include "opto/optoreg.hpp" 29 30 // processor dependent initialization for i486 31 32 extern void reg_mask_init(); 33 34 void Compile::pd_compiler2_init() { 35 guarantee(CodeEntryAlignment >= InteriorEntryAlignment, "" ); 36 // QQQ presumably all 64bit cpu's support this. Seems like the ifdef could 37 // simply be left out. 38 #ifndef AMD64 39 if (!VM_Version::supports_cmov()) { 40 ConditionalMoveLimit = 0; 41 } 42 #endif // AMD64 43 44 if (UseAVX < 3) { 45 int delta = XMMRegisterImpl::max_slots_per_register * XMMRegisterImpl::number_of_registers; 46 int bottom = ConcreteRegisterImpl::max_fpr; 47 int top = bottom + delta; 48 int middle = bottom + (delta / 2); 49 int xmm_slots = XMMRegisterImpl::max_slots_per_register; 50 int lower = xmm_slots / 2; 51 // mark bad every register that we cannot get to if AVX less than 3, we have all slots in the array 52 // Note: vm2opto is allocated to ConcreteRegisterImpl::number_of_registers 53 for (int i = bottom; i < middle; i += xmm_slots) { 54 for (OptoReg::Name j = OptoReg::Name(i + lower); j<OptoReg::Name(i + xmm_slots); j = OptoReg::add(j, 1)) { 55 OptoReg::invalidate(j); 56 } 57 } 58 // mark the upper zmm bank bad and all the mask registers bad in this case 59 for (OptoReg::Name i = OptoReg::Name(middle); i<OptoReg::Name(_last_Mach_Reg - 1); i = OptoReg::add(i, 1)) { 60 OptoReg::invalidate(i); 61 } 62 } 63 reg_mask_init(); 64 }