llvm-svn: 78001

llvm-svn: 78000

from the perspective of LLVM exception handling. Otherwise the C++ personality
function may decide not to run them, if it only detects cleanup handlers.
 - Test case for this is exceptions.m in llvm-test.

llvm-svn: 77999

llvm-svn: 77993

llvm-svn: 77991

elsewhere.  Very slightly decouples DeclSpec users from knowing the exact
diagnostics to report, and makes it easier to provide different diagnostics in
some places.

llvm-svn: 77990

llvm-svn: 77985

remaining specifier enums T.

llvm-svn: 77981

llvm-svn: 77972

obviously correct.

llvm-svn: 77969

llvm-svn: 77961

llvm-svn: 77952

llvm-svn: 77947

llvm-svn: 77945

reset the current analysis context of the AnalysisManager.

llvm-svn: 77943

 - Patch by Jonathan Gray!

llvm-svn: 77935

llvm-svn: 77928

template partial specialization. Then, use those template arguments
when instantiating members of that class template partial
specialization. Fixes PR4607.

llvm-svn: 77925

llvm-svn: 77916

llvm-svn: 77915

llvm-svn: 77905

Fix regression caused by recent refactoring where HTML and plist files would not get flushed out when using '-disable-free'.

llvm-svn: 77882

llvm-svn: 77876

llvm-svn: 77875

Generalize the interface of 'StoreManager::RemoveDeadBindings()' to manipulate the entire GRState, not just the Store.

llvm-svn: 77870

llvm-svn: 77862

'void*' (or 'const void*') as an identity transformation.

llvm-svn: 77860

llvm-svn: 77854

happy.

llvm-svn: 77850

llvm-svn: 77848

ENABLE_EXPENSIVE_CHECKS clean on x86_64-.*-darwin10.

llvm-svn: 77831

llvm-svn: 77829

llvm-svn: 77811

serious issues :)

llvm-svn: 77800

llvm-svn: 77786

made to RegionStore (and related classes) in order to handle some
analyzer failures involving casts and manipulation of symbolic memory.

The root of the change is in StoreManager::CastRegion().  Instead of
using ad hoc heuristics to decide when to layer an ElementRegion on a
casted MemRegion, we now always layer an ElementRegion when the cast
type is different than the original type of the region.  This carries
the current cast information associated with a region around without
resorting to the error prone recording of "casted types" in GRState.

Along with this new policy of layering ElementRegions, I added a new
algorithm to strip away existing ElementRegions when they simply
represented casts of a base memory object.  This algorithm computes
the raw "byte offset" that an ElementRegion represents from the base
region, and allows the new ElementRegion to be based off that offset.
The added benefit is that this naturally handles a series of casts of
a MemRegion without building up a set of redundant ElementRegions
(thus canonicalizing the region view).

Other related changes that cascaded from this one (as tests were
failing in RegionStore):

- Revamped RegionStoreManager::InvalidateRegion() to completely remove
  all bindings and default values from a region and all subregions.
  Now invalidated fields are not bound directly to new symbolic
  values; instead the base region has a "default" symbol value from
  which "derived symbols" can be created.  The main advantage of this
  approach is that it allows us to invalidate a region hierarchy and
  then lazily instantiate new values no matter how deep the hierarchy
  went (i.e., regardless of the number of field accesses,
  e.g. x->f->y->z->...).  The previous approach did not do this.

- Slightly reworked RegionStoreManager::RemoveDeadBindings() to also
  incorporate live symbols and live regions that do not have direct
  bindings but also have "default values" used for lazy instantiation.
  The changes to 'InvalidateRegion' revealed that these were necessary
  in order to achieve lazy instantiation of values in the region store
  with those bindings being removed too early.

- The changes to InvalidateRegion() and RemoveDeadBindings() revealed
  a serious bug in 'getSubRegionMap()' where not all region -> subregion
  relationships involved in actually bindings (explicit and implicit)
  were being recorded.  This has been fixed by using a worklist algorithm
  to iteratively fill in the region map.

- Added special support to RegionStoreManager::Bind()/Retrieve() to handle
  OSAtomicCompareAndSwap in light of the new 'CastRegion' changes and the
  layering of ElementRegions.

- Fixed a bug in SymbolReaper::isLive() where derived symbols were not
  being marked live if the symbol they were derived from was also live.
  This fix was critical for getting lazy instantiation in RegionStore
  to work.

- Tidied up the implementation of ValueManager::getXXXSymbolVal() methods
  to use SymbolManager::canSymbolicate() to decide whether or not a
  symbol should be symbolicated.

- 'test/Analysis/misc-ps-xfail.m' now passes; that test case has been
  moved to 'test/Analysis/misc-ps.m'.

- Tweaked some pretty-printing of MemRegions, and implemented
  'ElementRegion::getRawOffset()' for use with the CastRegion changes.

llvm-svn: 77782

Temporarily disable out-of-bounds checking.  The current checking logic will not work quite right with the changes I'm about to commit.

llvm-svn: 77779

llvm-svn: 77763

llvm-svn: 77751

llvm-svn: 77738