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2009-11-12Remove obsolete 'struct NullDerefTag'.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86957 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-09Remove tabs, and whitespace cleanups.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81346 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-27Rename 'bindExpr' to 'BindExpr'.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@80294 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-27Move the AnalysisContext* from GRState to Environment.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@80293 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-27Simplify 'Environment' to contain only one map from 'const Stmt*' to SVals, ↵Ted Kremenek
greatly simplifying the logic of the analyzer in many places. We now only distinguish between block-level expressions and subexpressions in Environment::RemoveDeadBindings and GRState pretty-printing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@80194 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-25Remove CodeDecl and CFG from GRExprEngine and GRStateManager.Zhongxing Xu
Now AnalysisManager is the only place we can get CodeDecl. This leads to an API change: GRState::bindExpr() now takes the CFG argument. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79980 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-17To make the analysis independent on the locally stored liveness and cfgZhongxing Xu
of GRStateManager and GRExprEngine, pass the initial location context to the getInitialState() method. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79228 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-02Generalize the interface of 'StoreManager::RemoveDeadBindings()' to ↵Ted Kremenek
manipulate the entire GRState, not just the Store. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77870 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Refactor 'PostStmt' and 'PreStmt' to subclass a common parent 'StmtPoint'.Ted Kremenek
Educate GRExprEngine::VisitGraph() about 'PreStmt'. Mark the constructor of 'PostStmt' to be explicit, preventing implicit conversions and the selection of the wrong 'generateNode' method in GRStmtNodeBuilder. Constify a bunch of arguments, which falls out of the changes to ProgramPoint. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76809 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-13Tidy pretty-printing for SVals, using 'dump()' instead of 'printStdErr()', ↵Ted Kremenek
and implementing operator<< support for llvm::raw_ostream. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75560 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-30Key decisions about 'bool' vs '_Bool' to be based on a new flag in langoptions.Chris Lattner
This is simple enough, but then I thought it would be nice to make PrintingPolicy get a LangOptions so that various things can key off "bool" and "C++" independently. This spiraled out of control. There are many fixme's, but I think things are slightly better than they were before. One thing that can be improved: CFG should probably have an ASTContext pointer in it, which would simplify its clients. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74493 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-27Remove the last 'GetXXX' methods from GRStateManager.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74361 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-24Remove uses of std::ostream from libAnalysis.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74136 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-24Remove GRStateManager::GetSValAsScalarOrLoc()/GetSVal().Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74128 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-23Remove GRStateManager::BindLoc() and GRStateManager::Unbind().Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73996 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-23API cleanup: move more methods from GRStateManager to GRState.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73968 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-18Remove GRStateRef.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73670 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-18Remove more dependencies on GRStateRef. As a consequence, we can nowTed Kremenek
pretty-print a GRState object anywhere it is referenced (instead of needing a GRStateRef of a GRStateManager handy). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73669 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-17Start moving in the direction of removing GRStateRef. Now eachTed Kremenek
GRState object has a direct reference to its GRStateManager, making the functionality of GRStateRef redunandant. This will lead to some nice API cleanup and code shrinking across libAnalysis. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73644 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-09analyzer: Introduce a new class, ValueManager, that serves as an aggregateTed Kremenek
"manager of symbolic values", wrapping BasicValueFactory, SymbolManager, and MemRegionManager. While these individual managers nicely separate functionality in the analyzer, constructing symbolic values can sometimes be cumbersome because it requires using multiple managers at once. The goal of this class is to create some factory methods to create SVals that require the use of these different managers, thus (hopefully) simplifying the analyzer API for clients. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68709 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-30Simplify more code by using SVal::getAsSymbol() instead ofTed Kremenek
loc::SymbolVal/nonloc::SymbolVal probing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68049 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-04Adjust indentation.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66022 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-04Add "GetSValAsScalarOrLoc" methods to GRState/GRStateRef that only perform aTed Kremenek
retrieval from the store/environment for locations or scalar types. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65982 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03Don't use std::auto_ptr with getSubRegionMap().Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65957 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03Fix extra ';' bug noticed by Mike Stump.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65954 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03Implement FIXME: GRStateManager::scanReachableSymbols now supports scanning ↵Ted Kremenek
MemRegions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65919 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-14Added GRStateManager::scanReachableSymbols(), a method which scans the reachableTed Kremenek
symbols from an SVal. - Fixed a bug in EnvironmentManager::RemoveDeadBindings() where it did not mark live all the symbols reachable from a live block-level expression. - Fixed a bug in the retain/release checker where it did not stop tracking symbols that 'escaped' via compound literals being assigned to something the BasicStoreManager didn't reason about. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64534 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-21Static Analyzer: Replace LiveSymbols/DeadSymbols sets with a new object ↵Ted Kremenek
called "SymbolReaper". Right now it just consolidates the two and cleans up some client code, but shortly it will be used to enable "lazy computation" of live symbols for use with RegionStore. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62722 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-20Lazy bingding for region-store manager.Zhongxing Xu
* Now Bind() methods take and return GRState* because binding could also alter GDM. * No variables are initialized except those declared with initial values. * failed C test cases are due to bugs in RemoveDeadBindings(), which removes constraints that is still alive. This will be fixed in later patch. * default value of array and struct regions will be implemented in later patch. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61274 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-05Rename SymbolID to SymbolRef. This is a precursor to some overhauling of ↵Ted Kremenek
the representation of symbolic values. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60575 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-05StoreManager::Retrieve and StoreManager::RemoveDeadBindings now take a ↵Ted Kremenek
GRState* argument instead of a Store. This allows them to use the GDM for storing other data. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60570 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-12GRStateRef:Ted Kremenek
- Rename SetSVal to BindLoc - Add BindDecl - Add BindExpr GRState: - Environment now binds to Stmt* instead of Expr*. This is needed for processing ObjCForCollectionStmt (essentially the declaration of the the 'element' variable can have an SVal attached to it). - BindDecl no longer accepts Expr* for the initialization value; use SVal* instead. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59152 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-07Finish the implementation of VisitCompoundLiteralExpr. As VisitInitListExpr is Zhongxing Xu
available, things get much simplified. One addition is that CompoundLiteralExpr can appear both in rvalue and lvalue context. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58837 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-03Fix 80-col violations.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58596 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-30Rename:Zhongxing Xu
- SetSVal(GRState*, Loc, SVal) => BindLoc - SetSVal(GRState*, Expr*, SVal) => BindExpr git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58421 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-29Rename: AddDecl => BindDeclZhongxing Xu
BindDecl better describes what the function does: - Bind the VarDecl to its memory region - Bind the memory region to some initial value. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58359 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-27Added preliminary support for CompoundLiterals in the static analyzer:Ted Kremenek
- GRExprEngine::VisitCompoundLiteral... (1) visits the initializer list (generating ExplodedNodes) (2) creates a CompoundMemRegion for the literal (3) creates a new state with the bound literal values using GRStateManager::BindCompoundLiteral - GRStateManager::BindCompoundLiteral simply calls StoreManager::BindCompoundLiteral to get a new store and returns a persistent GRState with that store. - BasicStore::BindCompoundLiteral simply returns the same store, as it doesn't handle field sensitivity - RegionStore::BindCompoundLiteral currently fires an assert (pending discussion of how to best implement mappings for CompoundLiteralRegion). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58277 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-21Modify Store interface: GetSVal/SetSVal => Retrieve/Bind.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57896 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17This patch did the following renaming. There should be no functional changes.Zhongxing Xu
RVal => SVal LVal => Loc NonLVal => NonLoc lval => loc nonlval => nonloc git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57671 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-16This is the first step to build a better evaluation model for GRExprEngine. AZhongxing Xu
new VisitLValue method is added to replace the old VisitLVal. The semantics model becomes more explicit to separate rvalue evaluation from lvalue evaluation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57627 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-05Remove redundant parameter and rename StMgr to StateMgr.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57107 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-04This is a big patch, but the functionality change is small and the rest of ↵Ted Kremenek
the patch consists of deltas due to API changes. This patch overhauls the "memory region" abstraction that was prototyped (but never really used) as part of the Store.h. This patch adds MemRegion.h and MemRegion.cpp, which defines the class MemRegion and its subclasses. This classes serve to define an abstract representation of memory, with regions being layered on other regions to to capture the relationships between fields and variables, variables and the address space they are allocated in, and so on. The main motivation of this patch is that key parts of the analyzer assumed that all value bindings were to VarDecls. In the future this won't be the case, and this patch removes lval::DeclVal and replaces it with lval::MemRegionVal. Now all pieces of the analyzer must reason about abstract memory blocks instead of just variables. There should be no functionality change from this patch, but it opens the door for significant improvements to the analyzer such as field-sensitivity and object-sensitivity, both which were on hold until the memory abstraction got generalized. The memory region abstraction also allows type-information to literally be affixed to a memory region. This will allow the some now redundant logic to be removed from the retain/release checker. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57042 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-18Implement second part of PR 2600: NSError** parameter may be null, and ↵Ted Kremenek
should be checked before being dereferenced. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56318 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-13Patch by Csaba Hruska!Ted Kremenek
"Here is a patch what replaces std::ostream with llvm::raw_ostream. This patch covers the AST library, but ignores Analysis lib." git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56185 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-29Migrate the rest symbolic analysis stuff to BasicConstraintManager.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55536 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-27Make the destructor of ConstraintManager virtual.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55448 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-27Refactor Assume logic into a separate class ConstraintManager.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55412 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-23adjust to changes in various APIs from LLVM. We can't printChris Lattner
an APInt directly to an ostream now, so add some hacks. It would be better to switch all of the bugreport (and friends) stuff over to raw_ostream. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55264 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-23Simplify interface to Store::AddDeclTed Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55213 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-21Move the handling of DeclStmt from GRExprEngine to BasicStoreManager.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55144 91177308-0d34-0410-b5e6-96231b3b80d8
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