| /* |
| * Copyright (c) 2015, 2015, 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. |
| */ |
| package org.graalvm.compiler.hotspot.amd64; |
| |
| import static jdk.vm.ci.amd64.AMD64.r10; |
| import static jdk.vm.ci.amd64.AMD64.r11; |
| import static jdk.vm.ci.amd64.AMD64.r12; |
| import static jdk.vm.ci.amd64.AMD64.r13; |
| import static jdk.vm.ci.amd64.AMD64.r14; |
| import static jdk.vm.ci.amd64.AMD64.r8; |
| import static jdk.vm.ci.amd64.AMD64.r9; |
| import static jdk.vm.ci.amd64.AMD64.rax; |
| import static jdk.vm.ci.amd64.AMD64.rbp; |
| import static jdk.vm.ci.amd64.AMD64.rbx; |
| import static jdk.vm.ci.amd64.AMD64.rcx; |
| import static jdk.vm.ci.amd64.AMD64.rdi; |
| import static jdk.vm.ci.amd64.AMD64.rdx; |
| import static jdk.vm.ci.amd64.AMD64.rsi; |
| import static jdk.vm.ci.amd64.AMD64.xmm0; |
| import static jdk.vm.ci.amd64.AMD64.xmm1; |
| import static jdk.vm.ci.amd64.AMD64.xmm10; |
| import static jdk.vm.ci.amd64.AMD64.xmm11; |
| import static jdk.vm.ci.amd64.AMD64.xmm12; |
| import static jdk.vm.ci.amd64.AMD64.xmm13; |
| import static jdk.vm.ci.amd64.AMD64.xmm14; |
| import static jdk.vm.ci.amd64.AMD64.xmm15; |
| import static jdk.vm.ci.amd64.AMD64.xmm2; |
| import static jdk.vm.ci.amd64.AMD64.xmm3; |
| import static jdk.vm.ci.amd64.AMD64.xmm4; |
| import static jdk.vm.ci.amd64.AMD64.xmm5; |
| import static jdk.vm.ci.amd64.AMD64.xmm6; |
| import static jdk.vm.ci.amd64.AMD64.xmm7; |
| import static jdk.vm.ci.amd64.AMD64.xmm8; |
| import static jdk.vm.ci.amd64.AMD64.xmm9; |
| |
| import java.util.ArrayList; |
| import java.util.BitSet; |
| |
| import org.graalvm.compiler.core.common.alloc.RegisterAllocationConfig; |
| |
| import jdk.vm.ci.code.Register; |
| import jdk.vm.ci.code.RegisterArray; |
| import jdk.vm.ci.code.RegisterConfig; |
| |
| class AMD64HotSpotRegisterAllocationConfig extends RegisterAllocationConfig { |
| /** |
| * Specify priority of register selection within phases of register allocation. Highest priority |
| * is first. A useful heuristic is to give registers a low priority when they are required by |
| * machine instructions, like EAX and EDX on I486, and choose no-save registers before |
| * save-on-call, & save-on-call before save-on-entry. Registers which participate in fixed |
| * calling sequences should come last. Registers which are used as pairs must fall on an even |
| * boundary. |
| * |
| * Adopted from x86_64.ad. |
| */ |
| // @formatter:off |
| static final Register[] registerAllocationOrder = { |
| r10, r11, r8, r9, r12, rcx, rbx, rdi, rdx, rsi, rax, rbp, r13, r14, /*r15,*/ /*rsp,*/ |
| xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, |
| xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15 |
| }; |
| // @formatter:on |
| |
| AMD64HotSpotRegisterAllocationConfig(RegisterConfig registerConfig) { |
| super(registerConfig); |
| } |
| |
| @Override |
| protected RegisterArray initAllocatable(RegisterArray registers) { |
| BitSet regMap = new BitSet(registerConfig.getAllocatableRegisters().size()); |
| for (Register reg : registers) { |
| regMap.set(reg.number); |
| } |
| |
| ArrayList<Register> allocatableRegisters = new ArrayList<>(registers.size()); |
| for (Register reg : registerAllocationOrder) { |
| if (regMap.get(reg.number)) { |
| allocatableRegisters.add(reg); |
| } |
| } |
| |
| return super.initAllocatable(new RegisterArray(allocatableRegisters)); |
| } |
| } |