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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===--- LoopUnrolling.h - Unroll loops -------------------------*- C++ -*-===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | /// \file |
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| 9 | /// This header contains the declarations of functions which are used to decide |
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| 10 | /// which loops should be completely unrolled and mark their corresponding |
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| 11 | /// CFGBlocks. It is done by tracking a stack of loops in the ProgramState. This |
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| 12 | /// way specific loops can be marked as completely unrolled. For considering a |
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| 13 | /// loop to be completely unrolled it has to fulfill the following requirements: |
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| 14 | /// - Currently only forStmts can be considered. |
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| 15 | /// - The bound has to be known. |
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| 16 | /// - The counter variable has not escaped before/in the body of the loop and |
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| 17 | /// changed only in the increment statement corresponding to the loop. It also |
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| 18 | /// has to be initialized by a literal in the corresponding initStmt. |
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| 19 | /// - Does not contain goto, switch and returnStmt. |
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| 20 | /// |
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| 21 | //===----------------------------------------------------------------------===// |
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| 22 | |||
| 23 | #ifndef LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_LOOPUNROLLING_H |
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| 24 | #define LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_LOOPUNROLLING_H |
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| 25 | |||
| 26 | #include "clang/Analysis/CFG.h" |
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| 27 | #include "clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h" |
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| 28 | #include "clang/StaticAnalyzer/Core/PathSensitive/ExplodedGraph.h" |
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| 29 | namespace clang { |
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| 30 | namespace ento { |
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| 31 | |||
| 32 | /// Returns if the given State indicates that is inside a completely unrolled |
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| 33 | /// loop. |
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| 34 | bool isUnrolledState(ProgramStateRef State); |
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| 35 | |||
| 36 | /// Updates the stack of loops contained by the ProgramState. |
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| 37 | ProgramStateRef updateLoopStack(const Stmt *LoopStmt, ASTContext &ASTCtx, |
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| 38 | ExplodedNode* Pred, unsigned maxVisitOnPath); |
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| 39 | |||
| 40 | /// Updates the given ProgramState. In current implementation it removes the top |
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| 41 | /// element of the stack of loops. |
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| 42 | ProgramStateRef processLoopEnd(const Stmt *LoopStmt, ProgramStateRef State); |
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| 43 | |||
| 44 | } // end namespace ento |
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| 45 | } // end namespace clang |
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| 46 | |||
| 47 | #endif |