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49 lines
1.7 KiB
C++
49 lines
1.7 KiB
C++
// -*- mode: C++; c-file-style: "cc-mode" -*-
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//*************************************************************************
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// DESCRIPTION: Verilator: Propagate constants across AST
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//
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// Code available from: https://verilator.org
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//
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//*************************************************************************
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//
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// Copyright 2003-2020 by Wilson Snyder. This program is free software; you
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// can redistribute it and/or modify it under the terms of either the GNU
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// Lesser General Public License Version 3 or the Perl Artistic License
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// Version 2.0.
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// SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
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//
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//*************************************************************************
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#ifndef _V3CONST_H_
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#define _V3CONST_H_ 1
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#include "config_build.h"
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#include "verilatedos.h"
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#include "V3Error.h"
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#include "V3Ast.h"
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//============================================================================
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class V3Const {
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public:
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static AstNode* constifyParamsEdit(AstNode* nodep);
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static AstNode* constifyGenerateParamsEdit(AstNode* nodep);
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// Only do constant pushing, without removing dead logic
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static void constifyAllLive(AstNetlist* nodep);
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// Everything that's possible
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static void constifyAll(AstNetlist* nodep);
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// Also, warn
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static void constifyAllLint(AstNetlist* nodep);
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// C++ datatypes
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static void constifyCpp(AstNetlist* nodep);
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// Only the current node and lower
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// Return new node that may have replaced nodep
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static AstNode* constifyEdit(AstNode* nodep);
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// Only the current node and lower, with special SenTree optimization
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// Return new node that may have replaced nodep
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static AstNode* constifyExpensiveEdit(AstNode* nodep);
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};
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#endif // Guard
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