--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir.amd64/src/org/graalvm/compiler/lir/amd64/AMD64Ternary.java	Fri May 17 00:21:10 2019 +0200
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2019, 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.lir.amd64;
+
+import static jdk.vm.ci.code.ValueUtil.asRegister;
+import static jdk.vm.ci.code.ValueUtil.isRegister;
+import static jdk.vm.ci.code.ValueUtil.isStackSlot;
+import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.HINT;
+import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG;
+import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.STACK;
+
+import org.graalvm.compiler.asm.amd64.AMD64Address;
+import org.graalvm.compiler.asm.amd64.AMD64Assembler.VexRVMOp;
+import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler;
+import org.graalvm.compiler.asm.amd64.AVXKind.AVXSize;
+import org.graalvm.compiler.lir.LIRInstructionClass;
+import org.graalvm.compiler.lir.Opcode;
+import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
+
+import jdk.vm.ci.meta.AllocatableValue;
+
+/**
+ * AMD64 LIR instructions that have three inputs and one output.
+ */
+public class AMD64Ternary {
+
+    /**
+     * Instruction that has two {@link AllocatableValue} operands.
+     */
+    public static class ThreeOp extends AMD64LIRInstruction {
+        public static final LIRInstructionClass<ThreeOp> TYPE = LIRInstructionClass.create(ThreeOp.class);
+
+        @Opcode private final VexRVMOp opcode;
+        private final AVXSize size;
+
+        @Def({REG, HINT}) protected AllocatableValue result;
+        @Use({REG}) protected AllocatableValue x;
+        /**
+         * This argument must be Alive to ensure that result and y are not assigned to the same
+         * register, which would break the code generation by destroying y too early.
+         */
+        @Alive({REG}) protected AllocatableValue y;
+        @Alive({REG, STACK}) protected AllocatableValue z;
+
+        public ThreeOp(VexRVMOp opcode, AVXSize size, AllocatableValue result, AllocatableValue x, AllocatableValue y, AllocatableValue z) {
+            super(TYPE);
+            this.opcode = opcode;
+            this.size = size;
+
+            this.result = result;
+            this.x = x;
+            this.y = y;
+            this.z = z;
+        }
+
+        @Override
+        public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) {
+            AMD64Move.move(crb, masm, result, x);
+            if (isRegister(z)) {
+                opcode.emit(masm, size, asRegister(result), asRegister(y), asRegister(z));
+            } else {
+                assert isStackSlot(z);
+                opcode.emit(masm, size, asRegister(result), asRegister(y), (AMD64Address) crb.asAddress(z));
+            }
+        }
+    }
+}