--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.sparc/src/org/graalvm/compiler/hotspot/sparc/SPARCHotSpotSafepointOp.java	2020-05-20 18:11:53.183767125 -0700
+++ /dev/null	2020-03-09 18:57:19.455001459 -0700
@@ -1,153 +0,0 @@
-/*
- * Copyright (c) 2011, 2018, 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.sparc;
-
-import static jdk.vm.ci.code.ValueUtil.asRegister;
-import static jdk.vm.ci.sparc.SPARC.g0;
-
-import org.graalvm.compiler.asm.sparc.SPARCAddress;
-import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler;
-import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler.ScratchRegister;
-import org.graalvm.compiler.core.common.LIRKind;
-import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;
-import org.graalvm.compiler.hotspot.HotSpotDebugInfoBuilder;
-import org.graalvm.compiler.lir.LIRFrameState;
-import org.graalvm.compiler.lir.LIRInstructionClass;
-import org.graalvm.compiler.lir.Opcode;
-import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
-import org.graalvm.compiler.lir.gen.LIRGeneratorTool;
-import org.graalvm.compiler.lir.sparc.SPARCLIRInstruction;
-
-import jdk.vm.ci.code.Register;
-import jdk.vm.ci.code.ValueUtil;
-import jdk.vm.ci.code.site.InfopointReason;
-import jdk.vm.ci.meta.AllocatableValue;
-import jdk.vm.ci.meta.Value;
-
-/**
- * Emits a safepoint poll.
- */
-@Opcode("SAFEPOINT")
-public class SPARCHotSpotSafepointOp extends SPARCLIRInstruction {
-    public static final LIRInstructionClass<SPARCHotSpotSafepointOp> TYPE = LIRInstructionClass.create(SPARCHotSpotSafepointOp.class);
-    public static final SizeEstimate SIZE = SizeEstimate.create(9);
-
-    @State protected LIRFrameState state;
-    @Use({OperandFlag.REG, OperandFlag.ILLEGAL}) AllocatableValue safepointPollAddress;
-    private final GraalHotSpotVMConfig config;
-    private final Register thread;
-
-    public SPARCHotSpotSafepointOp(LIRFrameState state, GraalHotSpotVMConfig config, Register thread, LIRGeneratorTool tool) {
-        super(TYPE, SIZE);
-        this.state = state;
-        this.config = config;
-        this.thread = thread;
-        SPARCHotSpotLIRGenerator lirGen = (SPARCHotSpotLIRGenerator) tool;
-        safepointPollAddress = lirGen.getSafepointAddressValue();
-    }
-
-    @Override
-    public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
-        emitCode(crb, masm, config, false, state, thread, safepointPollAddress);
-    }
-
-    public static void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm, GraalHotSpotVMConfig config, boolean atReturn, LIRFrameState state, Register thread,
-                    Value safepointPollAddress) {
-        if (config.threadLocalHandshakes) {
-            emitThreadLocalPoll(crb, masm, config, atReturn, state, thread);
-        } else {
-            emitGlobalPoll(crb, masm, config, atReturn, state, asRegister(safepointPollAddress));
-        }
-    }
-
-    /**
-     * Emit a global safepoint poll.
-     */
-    private static void emitGlobalPoll(CompilationResultBuilder crb, SPARCMacroAssembler masm, GraalHotSpotVMConfig config, boolean atReturn, LIRFrameState state, Register safepointPollAddress) {
-        crb.recordMark(atReturn ? config.MARKID_POLL_RETURN_FAR : config.MARKID_POLL_FAR);
-        if (state != null) {
-            final int pos = masm.position();
-            crb.recordInfopoint(pos, state, InfopointReason.SAFEPOINT);
-        }
-        masm.ldx(new SPARCAddress(safepointPollAddress, 0), g0);
-    }
-
-    /**
-     * Emit a thread-local safepoint poll.
-     */
-    private static void emitThreadLocalPoll(CompilationResultBuilder crb, SPARCMacroAssembler masm, GraalHotSpotVMConfig config, boolean atReturn, LIRFrameState state, Register thread) {
-        assert !atReturn || state == null : "state is unneeded at return";
-
-        assert config.threadPollingPageOffset >= 0;
-
-        try (ScratchRegister scratchReg = masm.getScratchRegister()) {
-            Register scratch = scratchReg.getRegister();
-
-            masm.ldx(new SPARCAddress(thread, config.threadPollingPageOffset), scratch);
-
-            crb.recordMark(atReturn ? config.MARKID_POLL_RETURN_FAR : config.MARKID_POLL_FAR);
-            if (state != null) {
-                final int pos = masm.position();
-                crb.recordInfopoint(pos, state, InfopointReason.SAFEPOINT);
-            }
-            masm.ldx(new SPARCAddress(scratch, 0), g0);
-        }
-    }
-
-    static AllocatableValue getSafepointAddressValue(SPARCHotSpotLIRGenerator gen) {
-        if (gen.config.threadLocalHandshakes) {
-            return Value.ILLEGAL;
-        } else {
-            return gen.newVariable(LIRKind.value(gen.target().arch.getWordKind()));
-        }
-    }
-
-    static void emitPrologue(SPARCHotSpotNodeLIRBuilder lir, SPARCHotSpotLIRGenerator gen) {
-        if (!gen.config.threadLocalHandshakes) {
-            AllocatableValue var = gen.getSafepointAddressValue();
-            lir.append(new SPARCHotSpotSafepointOp.SPARCLoadSafepointPollAddress(var, gen.config));
-            gen.append(((HotSpotDebugInfoBuilder) lir.getDebugInfoBuilder()).lockStack());
-        }
-    }
-
-    public static class SPARCLoadSafepointPollAddress extends SPARCLIRInstruction {
-        public static final LIRInstructionClass<SPARCLoadSafepointPollAddress> TYPE = LIRInstructionClass.create(SPARCLoadSafepointPollAddress.class);
-        public static final SizeEstimate SIZE = SizeEstimate.create(2);
-
-        @Def({OperandFlag.REG}) protected AllocatableValue result;
-        private final GraalHotSpotVMConfig config;
-
-        public SPARCLoadSafepointPollAddress(AllocatableValue result, GraalHotSpotVMConfig config) {
-            super(TYPE, SIZE);
-            this.result = result;
-            this.config = config;
-        }
-
-        @Override
-        public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
-            masm.setx(config.safepointPollingAddress, ValueUtil.asRegister(result), false);
-        }
-    }
-}