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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
2010-01-11Switch RegionStore over to using <BaseRegion+raw offset> to storeTed Kremenek
value bindings. Along with a small change to OSAtomicChecker, this resolves <rdar://problem/7527292> and resolves some long-standing issues with how values can be bound to the same physical address by not have the same "key". This change is only a beginning; logically RegionStore needs to better handle loads from addresses where the stored value is larger/smaller/different type than the loaded value. We handle these cases in an approximate fashion now (via CastRetrievedVal and help in SimpleSValuator), but it could be made much smarter. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93137 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-16Teach OSAtomicChecker that a FunctionDecl's name isn't always a simple ↵Ted Kremenek
IdentifierInfo*. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91511 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09Fix null dereference in OSAtomicChecker and special case SymbolicRegions. ↵Ted Kremenek
We still aren't handling them correctly; I've added to failing test cases to test/Analysis/NSString-failed-cases.m that should pass and then be merged in to test/Analysis/NSString.m. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90993 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09Refactor OSAtomic evaluation logic into OSAtomicChecker.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90968 91177308-0d34-0410-b5e6-96231b3b80d8