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2010-01-25Split libAnalysis into two libraries: libAnalysis and libChecker.Ted Kremenek
(1) libAnalysis is a generic analysis library that can be used by Sema. It defines the CFG, basic dataflow analysis primitives, and inexpensive flow-sensitive analyses (e.g. LiveVariables). (2) libChecker contains the guts of the static analyzer, incuding the path-sensitive analysis engine and domain-specific checks. Now any clients that want to use the frontend to build their own tools don't need to link in the entire static analyzer. This change exposes various obvious cleanups that can be made to the layout of files and headers in libChecker. More changes pending. :) This change also exposed a layering violation between AnalysisContext and MemRegion. BlockInvocationContext shouldn't explicitly know about BlockDataRegions. For now I've removed the BlockDataRegion* from BlockInvocationContext (removing context-sensitivity; although this wasn't used yet). We need to have a better way to extend BlockInvocationContext (and any LocationContext) to add context-sensitivty. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94406 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-16Completely remove ObjCObjectRegion (tests pass this time).Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91572 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-16Temporarily revert 91553.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91557 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-16Remove use of ObjCObjectRegion from BasicStoreManager.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91553 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07Add analysis support for blocks. This includes a few key changes:Ted Kremenek
- Refactor the MemRegion hierarchy to distinguish between different StackSpaceRegions for locals and parameters. - VarRegions for "captured" variables now have the BlockDataRegion as their super region (except those passed by reference) - Add transfer function support to GRExprEngine for BlockDeclRefExprs. This change also supports analyzing blocks as an analysis entry point (top-of-the-stack), which required pushing more context-sensitivity around in the MemRegion hierarchy via the use of LocationContext objects. Functionally almost everything is the same, except we track LocationContexts in a few more areas and StackSpaceRegions now refer to a StackFrameContext object. In the future we will need to modify MemRegionManager to allow multiple StackSpaceRegions in flight at once (for the analysis of multiple stack frames). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90809 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04Replace SymbolReaper::isLive(VarDecl) with SymbolReaper::isLive(VarRegion).Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90582 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-28lib/Analysis: Remove VISIBILITY_HIDDEN from definitions in anonymous namespaceKovarththanan Rajaratnam
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90028 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16* Do the same thing to the basicstore as in r84163.Zhongxing Xu
* Add a load type to GRExprEngine::EvalLoad(). * When retrieve from 'theValue' of OSAtomic funcitions, use the type of the region instead of the argument expression as the load type. * Then we can convert CastRetrievedSVal to a pure assertion. In the future we can let all Retrieve() methods simply return SVal. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@88888 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-10Rename: StripCasts describes what it does better. Zhongxing Xu
getBaseRegion will be used in another method. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86649 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-04Refactor StoreManager::BindDecl() to take a VarRegion* instead of a ↵Ted Kremenek
VarDecl*, and modify GRExprEngine::EvalBind() to handle decl initialization as well. This paves the way for adding "checker" visitation in EvalBind(). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@85983 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-16retain/release checker: Stop tracking reference counts for any symbols ↵Ted Kremenek
touched by StoreManager::InvalidateRegion(). This fixes <rdar://problem/7257223> and <rdar://problem/7283470>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84223 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-14* Remove unused GRState* parameterZhongxing Xu
* Make all Base value the last argument. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84071 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27Fix:Ted Kremenek
<rdar://problem/6914474> checker doesn't realize that variable might have been assigned if a pointer to that variable was passed to another function via a structure The problem here was the RegionStoreManager::InvalidateRegion didn't invalidate the bindings of invalidated regions. This required a rewrite of this method using a worklist. As part of this fix, changed ValueManager::getConjuredSymbolVal() to require a 'void*' SymbolTag argument. This tag is used to differentiate two different symbols created at the same location. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82920 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-11Introduce "DefinedOrUnknownSVal" into the SVal class hierarchy, providing a wayTed Kremenek
to statically type various methods in SValuator/GRState as required either a defined value or a defined-but-possibly-unknown value. This leads to various logic cleanups in GRExprEngine, and lets the compiler enforce via type checking our assumptions about what symbolic values are possibly undefined and what are not. Along the way, clean up some of the static analyzer diagnostics regarding the uses of uninitialized values. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81579 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
2009-08-25Fix regression in BasicStoreManager caused by implicitly casting loaded ↵Ted Kremenek
values and trying to load/store from arrays. RegionStoreManager already properly handles these cases well; we just need to gracefully not handle this case in BasicStoreManager. This fixes PR 4781. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@80051 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-25Fix crash reported in <rdar://problem/7124210> by "back-porting" some of theTed Kremenek
implicit cast logic in RegionStoreManager to BasicStoreManager. This involved moving CastRetriedVal from RegionStoreManager to StoreManager. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@80026 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23Replace cerr with errs().Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79854 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-21Remove 'SelfRegion' field from both BasicStoreManager and RegionStoreManager.Ted Kremenek
SelfRegion represented the object bound to 'self' (when analyzing Objective-C methods) upon entry to a method. Having this region stored on the side ignores the current stack frame that we might be analyzing (among other things), and is a problem for interprocedural analysis. For RegionStoreManager, the value for SelfRegion is just lazily created. For BasicStoreManager, the value for SelfRegion is bound eagerly to 'self', but no explicit tracking of SelfRegion on the side is made. As part of this change, remove the restriction in BasicStoreManager that we only track ivars for 'self'. This shouldn't actually change anything in terms of precision, and simplifies the logic. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79694 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-21Add LocationContext* field to VarRegion. This is needed for interprocedural ↵Ted Kremenek
analysis. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79680 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-21Get the code decl from the initial location context.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79590 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
2009-07-29Change uses of:Ted Kremenek
Type::getAsReferenceType() -> Type::getAs<ReferenceType>() Type::getAsRecordType() -> Type::getAs<RecordType>() Type::getAsPointerType() -> Type::getAs<PointerType>() Type::getAsBlockPointerType() -> Type::getAs<BlockPointerType>() Type::getAsLValueReferenceType() -> Type::getAs<LValueReferenceType>() Type::getAsRValueReferenceType() -> Type::getAs<RValueReferenceType>() Type::getAsMemberPointerType() -> Type::getAs<MemberPointerType>() Type::getAsReferenceType() -> Type::getAs<ReferenceType>() Type::getAsTagType() -> Type::getAs<TagType>() And remove Type::getAsReferenceType(), etc. This change is similar to one I made a couple weeks ago, but that was partly reverted pending some additional design discussion. With Doug's pending smart pointer changes for Types, it seemed natural to take this approach. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77510 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-29Remove 'StoreManager::OldCastRegion()', TypedViewRegion (which onlyTed Kremenek
OldCastRegion used), and the associated command line option '-analyzer-store=old-basic-cast'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77509 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-29Make StoreManager::InvalidateRegion() virtual, move the current implementationTed Kremenek
in StoreManager to RegionStoreManager, and create a special, highly reduced version in BasicStoreManager. These changes are in preparation for future RegionStore-specific changes to InvalidateRegion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77483 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-21Fix PR 4594 by refactoring almost all casting logic from GRExprEngine::VisitCastTed Kremenek
to SValuator::EvalCast. In the process, the StoreManagers now use this new cast machinery, and the hack in GRExprEngine::EvalBind to handle implicit casts involving OSAtomicCompareAndSwap and friends has been removed (and replaced with logic closer to the logic specific to those functions). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76641 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-17Per offline discussion with Steve Naroff, add back Type::getAsXXXType() methodsTed Kremenek
until Doug Gregor's Type smart pointer code lands (or more discussion occurs). These methods just call the new Type::getAs<XXX> methods, so we still have reduced implementation redundancy. Having explicit getAsXXXType() methods makes it easier to set breakpoints in the debugger. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76193 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Add member template 'Type::getAs<T>', which converts a Type* to a respective T*.Ted Kremenek
This method is intended to eventually replace the individual Type::getAsXXXType<> methods. The motivation behind this change is twofold: 1) Reduce redundant implementations of Type::getAsXXXType() methods. Most of them are basically copy-and-paste. 2) By centralizing the implementation of the getAs<Type> logic we can more smoothly move over to Doug Gregor's proposed canonical type smart pointer scheme. Along with this patch: a) Removed 'Type::getAsPointerType()'; now clients use getAs<PointerType>. b) Removed 'Type::getAsBlockPointerTypE()'; now clients use getAs<BlockPointerType>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76098 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-15Fix <rdar://problem/7062158> by having BasicStoreManager model values for ↵Ted Kremenek
'static' global variables. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75844 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
2009-07-10Switch BasicStoreManager to use the new CastRegion implementation by default,Ted Kremenek
and replace the 'clang-cc' option '-analyzer-store=basic-new-cast' with '-analyzer-store=basic-old-cast'. We'll keep the old CastRegion implementation around for a little while for regression testing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75209 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-06Make 'BasicStoreManager' + 'NewCastRegion' testable from the command line ↵Ted Kremenek
using '-analyzer-store=basic-new-cast'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74865 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-03BasicStoreManager: Use SymbolManager::canSymbolicate() to determine if a ↵Ted Kremenek
variable can be symbolicated. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74750 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-02StoreManagers: Use 'hasGlobalsStorage()' and 'hasParametersStorage()' instead ofTed Kremenek
directly consulting if a VarDecl is an implicit or actual parameter, a global, etc. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74716 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-30Combine two conditional branches into one. No functionality change.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74552 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-30We do not require the super region of element region be typed. So do notZhongxing Xu
create TypedViewRegion for it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74516 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-30Remove the ASTContext parameter from the getBody() methods of Decl and ↵Argyrios Kyrtzidis
subclasses. Timings showed no significant difference before and after the commit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74504 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-28Do not crash on binding concrete integer location.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74407 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-28Simplify some code. As in region store, we always expect the location is aZhongxing Xu
memregion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74406 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
2009-06-23Remove GRStateManager::getRegion/getSelfRegion().Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74006 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-23Move all factory methods from SVal to ValueManager. API cleanup!Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73954 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-23MemRegions:Ted Kremenek
- Embed a reference to MemRegionManager objects in MemSpaceRegion objects - Use this embedded reference for MemRegion objects to access ASTContext objects without external help - Use this access to ASTContext to simplify 'isBoundable' (no ASTContext& argument required) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73935 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
2009-06-16Use canonical type for building ElementRegion. Otherwise ElementRegions cannotZhongxing Xu
be unique. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73482 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09Rename:Zhongxing Xu
SymbolRegionRValue => SymbolRegionValue SymExpr::RegionRValue => SymExpr::RegionValueKind git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71322 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09As discussed with Ted, rename TypedRegion::getObjectType() to Zhongxing Xu
TypedRegion::getValueType(). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71321 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-09rename: MemRegion:Zhongxing Xu
RValueType => ObjectType LValueType => LocationType No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71304 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-05Fix unused variable warningTed Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70946 91177308-0d34-0410-b5e6-96231b3b80d8
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