forked from github/verilator
63c694f65f
- Rename `--dump-treei` option to `--dumpi-tree`, which itself is now a special case of `--dumpi-<tag>` where tag can be a magic word, or a filename - Control dumping via static `dump*()` functions, analogous to `debug()` - Make dumping independent of the value of `debug()` (so dumping always works even without the debug flag) - Add separate `--dumpi-graph` for dumping V3Graphs, which is again a special case of `--dumpi-<tag>` - Alias `--dump-<tag>` to `--dumpi-<tag> 3` as before
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
// -*- mode: C++; c-file-style: "cc-mode" -*-
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//*************************************************************************
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// DESCRIPTION: Verilator: Hash AST trees to find duplicates
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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 2005-2022 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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//
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// V3Hasher handles computation of AstNode hashes
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//
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//*************************************************************************
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#ifndef VERILATOR_V3HASHER_H_
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#define VERILATOR_V3HASHER_H_
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#include "config_build.h"
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#include "verilatedos.h"
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#include "V3Ast.h"
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#include "V3Error.h"
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#include "V3Hash.h"
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//============================================================================
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class V3Hasher final {
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// NODE STATE
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// AstNode::user4() -> V3Hash. Hash value of this node (hash of 0 is illegal)
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const VNUser4InUse m_inuser4;
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public:
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// CONSTRUCTORS
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V3Hasher() = default;
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~V3Hasher() = default;
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// METHODS
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// Compute hash of node. This method caches the hash in the node's user4().
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V3Hash operator()(AstNode* nodep) const;
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// Re-compute hash of this node, discarding cached value, but used cached hash of children.
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V3Hash rehash(AstNode* nodep) const;
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// Compute hash of node, without caching in user4.
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static V3Hash uncachedHash(const AstNode* nodep);
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};
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#endif // Guard
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