6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
50 lines
2.3 KiB
C++
50 lines
2.3 KiB
C++
//===-- SimplifyConstraints.h -----------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_ANALYSIS_FLOWSENSITIVE_SIMPLIFYCONSTRAINTS_H
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#define LLVM_CLANG_ANALYSIS_FLOWSENSITIVE_SIMPLIFYCONSTRAINTS_H
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#include "clang/Analysis/FlowSensitive/Arena.h"
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#include "clang/Analysis/FlowSensitive/Formula.h"
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#include "llvm/ADT/SetVector.h"
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namespace clang {
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namespace dataflow {
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/// Information on the way a set of constraints was simplified.
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struct SimplifyConstraintsInfo {
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/// List of equivalence classes of atoms. For each equivalence class, the
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/// original constraints imply that all atoms in it must be equivalent.
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/// Simplification replaces all occurrences of atoms in an equivalence class
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/// with a single representative atom from the class.
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/// Does not contain equivalence classes with just one member or atoms
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/// contained in `TrueAtoms` or `FalseAtoms`.
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llvm::SmallVector<llvm::SmallVector<Atom>> EquivalentAtoms;
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/// Atoms that the original constraints imply must be true.
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/// Simplification replaces all occurrences of these atoms by a true literal
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/// (which may enable additional simplifications).
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llvm::SmallVector<Atom> TrueAtoms;
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/// Atoms that the original constraints imply must be false.
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/// Simplification replaces all occurrences of these atoms by a false literal
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/// (which may enable additional simplifications).
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llvm::SmallVector<Atom> FalseAtoms;
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};
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/// Simplifies a set of constraints (implicitly connected by "and") in a way
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/// that does not change satisfiability of the constraints. This does _not_ mean
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/// that the set of solutions is the same before and after simplification.
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/// `Info`, if non-null, will be populated with information about the
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/// simplifications that were made to the formula (e.g. to display to the user).
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void simplifyConstraints(llvm::SetVector<const Formula *> &Constraints,
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Arena &arena, SimplifyConstraintsInfo *Info = nullptr);
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} // namespace dataflow
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} // namespace clang
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#endif // LLVM_CLANG_ANALYSIS_FLOWSENSITIVE_SIMPLIFYCONSTRAINTS_H
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