Rename SymbolID to SymbolRef.  This is a precursor to some overhauling of the representation of symbolic values.

llvm-svn: 60575

uses of getName() with uses of getDeclName().  This upgrades a bunch of
diags to take DeclNames instead of std::strings.

This also tweaks a couple of diagnostics to be cleaner and changes
CheckInitializerTypes/PerformInitializationByConstructor to pass
around DeclarationNames instead of std::strings.

llvm-svn: 59947

where the control reaches the end of a non-void function and also allows the
compiler to generate better code.  When this assertion is false we can easily
add more else cases.

llvm-svn: 59468

 - RegionView and RegionViewMap is introduced to assist back-mapping from
   super region to subregions.
 - GDM is used to carry RegionView information.
 - AnonTypedRegion is added to represent a typed region introduced by pointer
   casting. Later AnonTypedRegion can be used in other similar cases, e.g.,
   malloc()'ed region.
 - The specific conversion is delegated to store manager.

llvm-svn: 59382

type when assigning to it.

llvm-svn: 59229

llvm-svn: 59015

llvm-svn: 58985

- Prepare AnonPointeeRegioin for later use.

llvm-svn: 58595

llvm-svn: 58551

Pull determination of the super region for a VarRegion into a single getVarRegion() method.  This provides a common clean API for clients.

llvm-svn: 58272

llvm-svn: 58270

llvm-svn: 58245

llvm-svn: 58137

llvm-svn: 58106

llvm-svn: 58077

llvm-svn: 57891

llvm-svn: 57724

- Added new region "SymbolicRegion", which maps symbol values to the region domain.
- Enhanced BasicStore::getFieldLValue() to return a FieldRegion (using SymbolicRegion)
- Added some utility methods to GRState for fetch svals from the store.
- Fixed regression in CheckNSError (we weren't getting the value bound to the parameter)

llvm-svn: 57717

This is the first step to implement a field-sensitive store model. Other things are simplified: no heap shape assumption, no parameter alias assumption, etc.

llvm-svn: 57285

llvm-svn: 57146

This is a big patch, but the functionality change is small and the rest of 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.

llvm-svn: 57042