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
LP64_ONLY(extern void reg_mask_init ();)32 LP64_ONLY(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 LP64_ONLY(reg_mask_init();)
64 }
65