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! # Copyright (c) 1997,
1998, Oracle and/or its affiliates. All rights reserved.
! # Copyright (c) 1997, 2015, 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.
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This document specifies the syntax and associated semantics for the JavaSoft
HotSpot Architecture Description Language. This language is used to describe
the architecture of a processor, and is the input to the ADL Compiler. The
ADL Compiler compiles an ADL file into code which is incorporated into the
Optimizing Just In Time Compiler (OJIT) to generate efficient and correct code
! for the target architecture. The ADL describes three
bassic different types
! for the target architecture. The ADL describes three basic different types
of architectural features. It describes the instruction set (and associated
operands) of the target architecture. It describes the register set of the
target architecture along with relevant information for the register allocator.
Finally, it describes the architecture's pipeline for scheduling purposes.
The ADL is used to create an architecture description file for a target