Fix horrible GRExprEngine bug where switch statements with no 'case:' statements would cause the path to get prematurely aborted.  Fixes <rdar://problem/8360854>.

llvm-svn: 112233

llvm-svn: 112229

This lets us remove Sema.h's dependency on Expr.h and Decl.h.

llvm-svn: 112156

llvm-svn: 112132

to the new constants.

llvm-svn: 112047

- Added wasReferenced function to PseudoConstantAnalysis to determine if a variable was ever referenced in a function (outside of a self-assignment)
- BlockDeclRefExpr referenced variables are now explicitly added to the non-constant list
- Remove unnecessary ignore of implicit casts
- Generalized parameter self-assign detection to detect deliberate self-assigns of variables to avoid unused variable warnings
- Updated test cases with deliberate self-assignments
- Fixed bug with C++ references and pseudoconstants
- Added test case for C++ references and pseudoconstants

llvm-svn: 111965

llvm-svn: 111897

- Psuedo -> Pseudo (doh...)
- C++ reference support
- Added pseudoconstant test case for __block vars
- Separated out static local checking from pseudoconstant analysis and generalized to non-local checking
- Added missing test cases for storage false positives

llvm-svn: 111832

llvm-svn: 111790

llvm-svn: 111768

llvm-svn: 111737

llvm-svn: 111736

llvm-svn: 111735

with the same binding key. The only trick here is that sometimes the Symbolic
region is stored in with an LocAsInteger wrapper. We unwrap that in 
SVal::getAsLocSymbol().

llvm-svn: 111734

region and its base region as the same binding key.

llvm-svn: 111732

llvm-svn: 111731

relavant any more, because we set its default value to a symbol, and the type of
default symbolic value is irrelavant.

llvm-svn: 111730

llvm-svn: 111616

llvm-svn: 111602

llvm-svn: 111541

llvm-svn: 111472

Now all classes derived from Attr are generated from TableGen.
Additionally, Attr* is no longer its own linked list; SmallVectors or
Attr* are used. The accompanying LLVM commit contains the updates to
TableGen necessary for this.

Some other notes about newly-generated attribute classes:

 - The constructor arguments are a SourceLocation and a Context&,
   followed by the attributes arguments in the order that they were
   defined in Attr.td

 - Every argument in Attr.td has an appropriate accessor named getFoo,
   and there are sometimes a few extra ones (such as to get the length
   of a variadic argument).

Additionally, specific_attr_iterator has been introduced, which will
iterate over an AttrVec, but only over attributes of a certain type. It
can be accessed through either Decl::specific_attr_begin/end or
the global functions of the same name.

llvm-svn: 111455

Added psuedo-constant analysis and integrated it into the false positive reduction stage in IdempotentOperationChecker.
- Renamed IdempotentOperationChecker::isConstant to isConstantOrPseudoConstant to better reflect the function
- Changed IdempotentOperationChecker::PreVisitBinaryOperator to only run 'CanVary' once on undefined assumptions
- Created new PsuedoConstantAnalysis class and added it to AnalysisContext
- Changed IdempotentOperationChecker to exploit the new analysis
- Updated tests with psuedo-constants
- Added check to IdempotentOperationChecker to see if a Decl is const qualified

llvm-svn: 111426

llvm-svn: 111353

llvm-svn: 111351

llvm-svn: 111347

llvm-svn: 111327

llvm-svn: 111314

llvm-svn: 111304

and remove getStrData().  Patch by Peter Davies (with some tweaks).

llvm-svn: 111229

llvm-svn: 111217

llvm-svn: 111205

llvm-svn: 111190

Instead of using operator bool() for testing if a BindingKey is valid, use an explicit isValid() method.

llvm-svn: 111181

llvm-svn: 111179

- Fix memcpy() and friends to actually invalidate the destination buffer.
- Emit a different message for out-of-bounds buffer accesses if the buffer is being written to.
- When conjuring symbols, let ValueManager figure out the type.

llvm-svn: 111120

- Allow making ElementRegions with complex offsets (expressions or symbols) for the purpose of bounds-checking.
- Rewrite GRState::AssumeInBound to actually do that checking, and to use the normal constraint path.
- Remove ConstraintManager::AssumeInBound.
- Teach RegionStore and FlatStore to ignore those regions for now.

llvm-svn: 111116

llvm-svn: 111113

llvm-svn: 111103

llvm-svn: 111099