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