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src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.amd64/src/org/graalvm/compiler/lir/amd64/AMD64VZeroUpper.java

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rev 56282 : [mq]: graal
   1 /*
   2  * Copyright (c) 2016, 2018, 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 package org.graalvm.compiler.lir.amd64;
  26 
  27 import static jdk.vm.ci.code.ValueUtil.asRegister;
  28 import static jdk.vm.ci.code.ValueUtil.isRegister;
  29 

  30 import java.util.BitSet;
  31 
  32 import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler;
  33 import org.graalvm.compiler.lir.LIRInstructionClass;
  34 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
  35 
  36 import jdk.vm.ci.amd64.AMD64;
  37 import jdk.vm.ci.code.Register;

  38 import jdk.vm.ci.code.RegisterValue;
  39 import jdk.vm.ci.meta.Value;
  40 
  41 public class AMD64VZeroUpper extends AMD64LIRInstruction {
  42 
  43     public static final LIRInstructionClass<AMD64VZeroUpper> TYPE = LIRInstructionClass.create(AMD64VZeroUpper.class);
  44 
  45     @Temp protected final RegisterValue[] xmmRegisters;
  46 
  47     public AMD64VZeroUpper(Value[] exclude) {
  48         super(TYPE);
  49         xmmRegisters = initRegisterValues(exclude);
  50     }
  51 
  52     private static RegisterValue[] initRegisterValues(Value[] exclude) {
  53         BitSet skippedRegs = new BitSet();
  54         int numSkipped = 0;
  55         if (exclude != null) {
  56             for (Value value : exclude) {
  57                 if (isRegister(value) && asRegister(value).getRegisterCategory().equals(AMD64.XMM)) {
  58                     skippedRegs.set(asRegister(value).number);
  59                     numSkipped++;
  60                 }
  61             }
  62         }
  63         RegisterValue[] regs = new RegisterValue[AMD64.xmmRegistersAVX512.length - numSkipped];
  64         for (int i = 0, j = 0; i < AMD64.xmmRegistersAVX512.length; i++) {
  65             Register reg = AMD64.xmmRegistersAVX512[i];
  66             if (!skippedRegs.get(reg.number)) {
  67                 regs[j++] = reg.asValue();
  68             }
  69         }
  70         return regs;
  71     }
  72 
  73     @Override
  74     public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler asm) {
  75         asm.vzeroupper();
  76     }
  77 }
   1 /*
   2  * Copyright (c) 2016, 2019, 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 package org.graalvm.compiler.lir.amd64;
  26 
  27 import static jdk.vm.ci.code.ValueUtil.asRegister;
  28 import static jdk.vm.ci.code.ValueUtil.isRegister;
  29 
  30 import java.util.ArrayList;
  31 import java.util.BitSet;
  32 
  33 import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler;
  34 import org.graalvm.compiler.lir.LIRInstructionClass;
  35 import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
  36 
  37 import jdk.vm.ci.amd64.AMD64;
  38 import jdk.vm.ci.code.Register;
  39 import jdk.vm.ci.code.RegisterConfig;
  40 import jdk.vm.ci.code.RegisterValue;
  41 import jdk.vm.ci.meta.Value;
  42 
  43 public class AMD64VZeroUpper extends AMD64LIRInstruction {
  44 
  45     public static final LIRInstructionClass<AMD64VZeroUpper> TYPE = LIRInstructionClass.create(AMD64VZeroUpper.class);
  46 
  47     @Temp protected final RegisterValue[] xmmRegisters;
  48 
  49     public AMD64VZeroUpper(Value[] exclude, RegisterConfig registerConfig) {
  50         super(TYPE);
  51         xmmRegisters = initRegisterValues(exclude, registerConfig);
  52     }
  53 
  54     private static RegisterValue[] initRegisterValues(Value[] exclude, RegisterConfig registerConfig) {
  55         BitSet skippedRegs = new BitSet();

  56         if (exclude != null) {
  57             for (Value value : exclude) {
  58                 if (isRegister(value) && asRegister(value).getRegisterCategory().equals(AMD64.XMM)) {
  59                     skippedRegs.set(asRegister(value).number);

  60                 }
  61             }
  62         }
  63         ArrayList<RegisterValue> regs = new ArrayList<>();
  64         for (Register r : registerConfig.getCallerSaveRegisters()) {
  65             if (r.getRegisterCategory().equals(AMD64.XMM) && !skippedRegs.get(r.number)) {
  66                 regs.add(r.asValue());

  67             }
  68         }
  69         return regs.toArray(new RegisterValue[regs.size()]);
  70     }
  71 
  72     @Override
  73     public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler asm) {
  74         asm.vzeroupper();
  75     }
  76 }
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