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diff --git a/src/cpu/reg_class_impl.hh b/src/cpu/reg_class_impl.hh
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-/*
- * Copyright (c) 2016 ARM Limited
- * All rights reserved
- *
- * The license below extends only to copyright in the software and shall
- * not be construed as granting a license to any other intellectual
- * property including but not limited to intellectual property relating
- * to a hardware implementation of the functionality of the software
- * licensed hereunder.  You may use the software subject to the license
- * terms below provided that you ensure that this notice is replicated
- * unmodified and in its entirety in all distributions of the software,
- * modified or unmodified, in source code or in binary form.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met: redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer;
- * redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution;
- * neither the name of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Authors: Rekai Gonzalez
- */
-
-#ifndef __CPU__REG_CLASS_IMPL_HH__
-#define __CPU__REG_CLASS_IMPL_HH__
-
-#include <cassert>
-#include <cstddef>
-#include <iostream>
-
-#include "arch/registers.hh"
-#include "config/the_isa.hh"
-#include "cpu/reg_class.hh"
-
-bool RegId::isZeroReg() const
-{
-    return ((regClass == IntRegClass && regIdx == TheISA::ZeroReg) ||
-            (THE_ISA == ALPHA_ISA && regClass == FloatRegClass &&
-             regIdx == TheISA::ZeroReg));
-}
-
-static constexpr size_t Scale = TheISA::NumVecElemPerVecReg;
-
-RegIndex RegId::flatIndex() const {
-    switch (regClass) {
-    case IntRegClass:
-    case FloatRegClass:
-    case VecRegClass:
-    case CCRegClass:
-    case MiscRegClass:
-        return regIdx;
-    case VecElemClass:
-        return Scale*regIdx + elemIdx;
-    }
-    panic("Trying to flatten a register without class!");
-    return -1;
-}
-
-#endif // __CPU__REG_CLASS_IMPL_HH__