clang
15.0.0git
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A class responsible for cleaning up unused symbols. More...
#include "clang/StaticAnalyzer/Core/PathSensitive/SymbolManager.h"
Public Types | |
using | region_iterator = RegionSetTy::const_iterator |
Public Member Functions | |
SymbolReaper (const StackFrameContext *Ctx, const Stmt *s, SymbolManager &symmgr, StoreManager &storeMgr) | |
Construct a reaper object, which removes everything which is not live before we execute statement s in the given location context. More... | |
const LocationContext * | getLocationContext () const |
bool | isLive (SymbolRef sym) |
bool | isLiveRegion (const MemRegion *region) |
bool | isLive (const Expr *ExprVal, const LocationContext *LCtx) const |
bool | isLive (const VarRegion *VR, bool includeStoreBindings=false) const |
void | markLive (SymbolRef sym) |
Unconditionally marks a symbol as live. More... | |
void | markInUse (SymbolRef sym) |
Marks a symbol as important to a checker. More... | |
region_iterator | region_begin () const |
region_iterator | region_end () const |
bool | isDead (SymbolRef sym) |
Returns whether or not a symbol has been confirmed dead. More... | |
void | markLive (const MemRegion *region) |
void | markElementIndicesLive (const MemRegion *region) |
void | setReapedStore (StoreRef st) |
Set to the value of the symbolic store after StoreManager::removeDeadBindings has been called. More... | |
A class responsible for cleaning up unused symbols.
Definition at line 505 of file SymbolManager.h.
using clang::ento::SymbolReaper::region_iterator = RegionSetTy::const_iterator |
Definition at line 561 of file SymbolManager.h.
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Construct a reaper object, which removes everything which is not live before we execute statement s in the given location context.
If the statement is NULL, everything is this and parent contexts is considered live. If the stack frame context is NULL, everything on stack is considered dead.
Definition at line 534 of file SymbolManager.h.
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inline |
Definition at line 538 of file SymbolManager.h.
Returns whether or not a symbol has been confirmed dead.
This should only be called once all marking of dead symbols has completed. (For checkers, this means only in the checkDeadSymbols callback.)
Definition at line 570 of file SymbolManager.h.
References isLive().
Referenced by clang::ento::retaincountchecker::RetainCountChecker::checkDeadSymbols(), and clang::ento::SMTConstraintManager::removeDeadBindings().
bool clang::ento::SymbolReaper::isLive | ( | const Expr * | ExprVal, |
const LocationContext * | LCtx | ||
) | const |
bool clang::ento::SymbolReaper::isLive | ( | const VarRegion * | VR, |
bool | includeStoreBindings = false |
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) | const |
Definition at line 428 of file SymbolManager.cpp.
Referenced by isDead(), and clang::ento::EnvironmentManager::removeDeadBindings().
Definition at line 405 of file SymbolManager.cpp.
Referenced by clang::ento::mpi::MPIChecker::checkMissingWaits().
void SymbolReaper::markElementIndicesLive | ( | const MemRegion * | region | ) |
Definition at line 389 of file SymbolManager.cpp.
void SymbolReaper::markInUse | ( | SymbolRef | sym | ) |
Marks a symbol as important to a checker.
For metadata symbols, this will keep the symbol alive as long as its associated region is also live. For other symbols, this has no effect; checkers are not permitted to influence the life of other symbols. This should be used before any symbol marking has occurred, i.e. in the MarkLiveSymbols callback.
Definition at line 400 of file SymbolManager.cpp.
void SymbolReaper::markLive | ( | const MemRegion * | region | ) |
Definition at line 384 of file SymbolManager.cpp.
void SymbolReaper::markLive | ( | SymbolRef | sym | ) |
Unconditionally marks a symbol as live.
This should never be used by checkers, only by the state infrastructure such as the store and environment. Checkers should instead use metadata symbols and markInUse.
Definition at line 379 of file SymbolManager.cpp.
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Definition at line 563 of file SymbolManager.h.
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inline |
Definition at line 564 of file SymbolManager.h.
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Set to the value of the symbolic store after StoreManager::removeDeadBindings has been called.
Definition at line 579 of file SymbolManager.h.
Referenced by clang::ento::ProgramStateManager::removeDeadBindingsFromEnvironmentAndStore().