hotspot/src/share/vm/asm/register.hpp
author drchase
Fri, 09 May 2014 16:50:54 -0400
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8037816: Fix for 8036122 breaks build with Xcode5/clang Summary: Repaired or selectively disabled offending formats; future-proofed with additional checking Reviewed-by: kvn, jrose, stefank
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/*
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 * Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef SHARE_VM_ASM_REGISTER_HPP
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#define SHARE_VM_ASM_REGISTER_HPP
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#include "utilities/top.hpp"
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// Use AbstractRegister as shortcut
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class AbstractRegisterImpl;
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typedef AbstractRegisterImpl* AbstractRegister;
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// The super class for platform specific registers. Instead of using value objects,
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// registers are implemented as pointers. Subclassing is used so all registers can
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// use the debugging suport below. No virtual functions are used for efficiency.
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// They are canonicalized; i.e., registers are equal if their pointers are equal,
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// and vice versa. A concrete implementation may just map the register onto 'this'.
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class AbstractRegisterImpl {
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 protected:
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  int value() const                              { return (int)(intx)this; }
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};
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//
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// Macros for use in defining Register instances.  We'd like to be
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// able to simply define const instances of the RegisterImpl* for each
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// of the registers needed on a system in a header file.  However many
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// compilers don't handle this very well and end up producing a
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// private definition in every file which includes the header file.
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// Along with the static constructors necessary for initialization it
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// can consume a significant amount of space in the result library.
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//
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// The following macros allow us to declare the instance in a .hpp and
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// produce an enumeration value which has the same number.  Then in a
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// .cpp the the register instance can be defined using the enumeration
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// value.  This avoids the use of static constructors and multiple
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// definitions per .cpp.  In addition #defines for the register can be
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// produced so that the constant registers can be inlined.  These
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// macros should not be used inside other macros, because you may get
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// multiple evaluations of the macros which can give bad results.
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//
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// Here are some example uses and expansions.  Note that the macro
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// invocation is terminated with a ;.
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//
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// CONSTANT_REGISTER_DECLARATION(Register, G0, 0);
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//
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// extern const Register G0 ;
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// enum { G0_RegisterEnumValue = 0 } ;
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//
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// REGISTER_DECLARATION(Register, Gmethod, G5);
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//
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// extern const Register Gmethod ;
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// enum { Gmethod_RegisterEnumValue = G5_RegisterEnumValue } ;
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//
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// REGISTER_DEFINITION(Register, G0);
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//
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// const Register G0 = ( ( Register ) G0_RegisterEnumValue ) ;
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//
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#define AS_REGISTER(type,name)         ((type)name##_##type##EnumValue)
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#define CONSTANT_REGISTER_DECLARATION(type, name, value) \
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extern const type name;                                  \
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enum { name##_##type##EnumValue = (value) }
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#define REGISTER_DECLARATION(type, name, value) \
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extern const type name;                         \
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enum { name##_##type##EnumValue = value##_##type##EnumValue }
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#define REGISTER_DEFINITION(type, name) \
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const type name = ((type)name##_##type##EnumValue)
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#ifdef TARGET_ARCH_x86
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# include "register_x86.hpp"
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#endif
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#ifdef TARGET_ARCH_sparc
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# include "register_sparc.hpp"
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#endif
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#ifdef TARGET_ARCH_zero
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# include "register_zero.hpp"
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#endif
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#ifdef TARGET_ARCH_arm
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# include "register_arm.hpp"
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#endif
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#ifdef TARGET_ARCH_ppc
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# include "register_ppc.hpp"
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#endif
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// Debugging support
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inline void assert_different_registers(
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  AbstractRegister a,
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  AbstractRegister b
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) {
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  assert(
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    a != b,
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    err_msg_res("registers must be different: a=" INTPTR_FORMAT ", b=" INTPTR_FORMAT "",
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                p2i(a), p2i(b))
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  );
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}
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inline void assert_different_registers(
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  AbstractRegister a,
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  AbstractRegister b,
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  AbstractRegister c
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) {
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  assert(
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    a != b && a != c
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           && b != c,
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    err_msg_res("registers must be different: a=" INTPTR_FORMAT ", b=" INTPTR_FORMAT
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                ", c=" INTPTR_FORMAT "",
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                p2i(a), p2i(b), p2i(c))
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  );
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}
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inline void assert_different_registers(
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  AbstractRegister a,
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  AbstractRegister b,
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  AbstractRegister c,
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  AbstractRegister d
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) {
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  assert(
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    a != b && a != c && a != d
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           && b != c && b != d
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                     && c != d,
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    err_msg_res("registers must be different: a=" INTPTR_FORMAT ", b=" INTPTR_FORMAT
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                ", c=" INTPTR_FORMAT ", d=" INTPTR_FORMAT "",
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                p2i(a), p2i(b), p2i(c), p2i(d))
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  );
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}
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inline void assert_different_registers(
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  AbstractRegister a,
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  AbstractRegister b,
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  AbstractRegister c,
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  AbstractRegister d,
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  AbstractRegister e
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) {
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  assert(
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    a != b && a != c && a != d && a != e
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           && b != c && b != d && b != e
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                     && c != d && c != e
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                               && d != e,
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    err_msg_res("registers must be different: a=" INTPTR_FORMAT ", b=" INTPTR_FORMAT
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                ", c=" INTPTR_FORMAT ", d=" INTPTR_FORMAT ", e=" INTPTR_FORMAT "",
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                p2i(a), p2i(b), p2i(c), p2i(d), p2i(e))
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  );
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}
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inline void assert_different_registers(
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  AbstractRegister a,
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  AbstractRegister b,
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  AbstractRegister c,
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  AbstractRegister d,
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  AbstractRegister e,
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  AbstractRegister f
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) {
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  assert(
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    a != b && a != c && a != d && a != e && a != f
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           && b != c && b != d && b != e && b != f
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                     && c != d && c != e && c != f
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                               && d != e && d != f
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                                         && e != f,
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    err_msg_res("registers must be different: a=" INTPTR_FORMAT ", b=" INTPTR_FORMAT
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                ", c=" INTPTR_FORMAT ", d=" INTPTR_FORMAT ", e=" INTPTR_FORMAT
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                ", f=" INTPTR_FORMAT "",
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                p2i(a), p2i(b), p2i(c), p2i(d), p2i(e), p2i(f))
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  );
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}
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inline void assert_different_registers(
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  AbstractRegister a,
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  AbstractRegister b,
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  AbstractRegister c,
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  AbstractRegister d,
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  AbstractRegister e,
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  AbstractRegister f,
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  AbstractRegister g
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) {
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  assert(
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    a != b && a != c && a != d && a != e && a != f && a != g
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           && b != c && b != d && b != e && b != f && b != g
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                     && c != d && c != e && c != f && c != g
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                               && d != e && d != f && d != g
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                                         && e != f && e != g
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                                                   && f != g,
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    err_msg_res("registers must be different: a=" INTPTR_FORMAT ", b=" INTPTR_FORMAT
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                ", c=" INTPTR_FORMAT ", d=" INTPTR_FORMAT ", e=" INTPTR_FORMAT
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                ", f=" INTPTR_FORMAT ", g=" INTPTR_FORMAT "",
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                p2i(a), p2i(b), p2i(c), p2i(d), p2i(e), p2i(f), p2i(g))
1
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  );
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}
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inline void assert_different_registers(
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  AbstractRegister a,
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  AbstractRegister b,
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  AbstractRegister c,
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  AbstractRegister d,
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  AbstractRegister e,
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  AbstractRegister f,
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  AbstractRegister g,
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  AbstractRegister h
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) {
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  assert(
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    a != b && a != c && a != d && a != e && a != f && a != g && a != h
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           && b != c && b != d && b != e && b != f && b != g && b != h
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                     && c != d && c != e && c != f && c != g && c != h
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                               && d != e && d != f && d != g && d != h
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                                         && e != f && e != g && e != h
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                                                   && f != g && f != h
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                                                             && g != h,
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    err_msg_res("registers must be different: a=" INTPTR_FORMAT ", b=" INTPTR_FORMAT
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                ", c=" INTPTR_FORMAT ", d=" INTPTR_FORMAT ", e=" INTPTR_FORMAT
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                ", f=" INTPTR_FORMAT ", g=" INTPTR_FORMAT ", h=" INTPTR_FORMAT "",
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                p2i(a), p2i(b), p2i(c), p2i(d), p2i(e), p2i(f), p2i(g), p2i(h))
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  );
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}
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inline void assert_different_registers(
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  AbstractRegister a,
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  AbstractRegister b,
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  AbstractRegister c,
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  AbstractRegister d,
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  AbstractRegister e,
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  AbstractRegister f,
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  AbstractRegister g,
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  AbstractRegister h,
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  AbstractRegister i
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) {
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  assert(
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    a != b && a != c && a != d && a != e && a != f && a != g && a != h && a != i
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           && b != c && b != d && b != e && b != f && b != g && b != h && b != i
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                     && c != d && c != e && c != f && c != g && c != h && c != i
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                               && d != e && d != f && d != g && d != h && d != i
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                                         && e != f && e != g && e != h && e != i
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                                                   && f != g && f != h && f != i
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                                                             && g != h && g != i
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                                                                       && h != i,
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    err_msg_res("registers must be different: a=" INTPTR_FORMAT ", b=" INTPTR_FORMAT
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                ", c=" INTPTR_FORMAT ", d=" INTPTR_FORMAT ", e=" INTPTR_FORMAT
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                ", f=" INTPTR_FORMAT ", g=" INTPTR_FORMAT ", h=" INTPTR_FORMAT
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                ", i=" INTPTR_FORMAT "",
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                p2i(a), p2i(b), p2i(c), p2i(d), p2i(e), p2i(f), p2i(g), p2i(h), p2i(i))
1
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  );
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}
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#endif // SHARE_VM_ASM_REGISTER_HPP