69 lines
1.9 KiB
C++
69 lines
1.9 KiB
C++
// OpenSTA, Static Timing Analyzer
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// Copyright (c) 2020, Parallax Software, Inc.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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#pragma once
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#include "Map.hh"
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#include "SdcClass.hh"
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#include "StaState.hh"
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#include "SearchClass.hh"
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namespace sta {
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class ClkSkew;
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typedef Map<Clock*, ClkSkew*> ClkSkewMap;
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// Find and report min clock skews.
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class ClkSkews : public StaState
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{
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public:
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ClkSkews(StaState *sta);
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// Report clk skews for clks.
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void reportClkSkew(ClockSet *clks,
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const Corner *corner,
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const SetupHold *setup_hold,
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int digits);
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protected:
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void findClkSkew(ClockSet *clks,
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const Corner *corner,
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const SetupHold *setup_hold,
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ClkSkewMap &skews);
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bool hasClkPaths(Vertex *vertex,
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ClockSet *clks);
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void findClkSkewFrom(Vertex *src_vertex,
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Vertex *q_vertex,
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RiseFallBoth *src_rf,
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ClockSet *clks,
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const Corner *corner,
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const SetupHold *setup_hold,
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ClkSkewMap &skews);
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void findClkSkew(Vertex *src_vertex,
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RiseFallBoth *src_rf,
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Vertex *tgt_vertex,
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RiseFallBoth *tgt_rf,
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ClockSet *clks,
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const Corner *corner,
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const SetupHold *setup_hold,
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ClkSkewMap &skews);
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void findFanout(Vertex *from,
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// Return value.
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VertexSet &endpoints);
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};
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} // namespace
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