| /* |
| * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "opto/compile.hpp" |
| #include "opto/node.hpp" |
| #include "opto/optoreg.hpp" |
| |
| // processor dependent initialization for i486 |
| |
| void Compile::pd_compiler2_init() { |
| guarantee(CodeEntryAlignment >= InteriorEntryAlignment, "" ); |
| // QQQ presumably all 64bit cpu's support this. Seems like the ifdef could |
| // simply be left out. |
| #ifndef AMD64 |
| if (!VM_Version::supports_cmov()) { |
| ConditionalMoveLimit = 0; |
| } |
| #endif // AMD64 |
| |
| if (UseAVX < 3) { |
| int delta = XMMRegisterImpl::max_slots_per_register * XMMRegisterImpl::number_of_registers; |
| int bottom = ConcreteRegisterImpl::max_fpr; |
| int top = bottom + delta; |
| int middle = bottom + (delta / 2); |
| int xmm_slots = XMMRegisterImpl::max_slots_per_register; |
| int lower = xmm_slots / 2; |
| // mark bad every register that we cannot get to if AVX less than 3, we have all slots in the array |
| // Note: vm2opto is allocated to ConcreteRegisterImpl::number_of_registers |
| for (int i = bottom; i < middle; i += xmm_slots) { |
| for (OptoReg::Name j = OptoReg::Name(i + lower); j<OptoReg::Name(i + xmm_slots); j = OptoReg::add(j, 1)) { |
| OptoReg::invalidate(j); |
| } |
| } |
| // mark the upper zmm bank bad and all the mask registers bad in this case |
| for (OptoReg::Name i = OptoReg::Name(middle); i<OptoReg::Name(_last_Mach_Reg - 1); i = OptoReg::add(i, 1)) { |
| OptoReg::invalidate(i); |
| } |
| } |
| } |