GRStmtNodeBuilder and is now responsible for adding its own nodes to the graph.

llvm-svn: 47923

Merged ValueState and ValueStateImpl into just ValueState, with GRExprEngine::StateTy just becoming ValueState*.

llvm-svn: 47714

GRSimpleVals performs the following action: invalidate all values passed-by-reference.

llvm-svn: 47638

the transfer function to be invoked without an Expr* for the Cast operation.

Added implicit promotions to the transfer function logic for compound
assignments.

llvm-svn: 47444

based on constant. prop. and limited symbolics.

- Renamed class: RValue -> RVal, LValue -> LVal, etc.
- Minor method renamings and interface cleanups.
- Tightened the RVal "type system" so that UninitializedVal and UnknownVal
  cannot be cast to LVal or NonLVal.  This forces these corner cases values
  to be explicitly handled early before being dispatched to plug-in transfer
  function logic.
- Major cleanup in the transfer function logic for binary and unary operators.
  Still fixing some regressions, but we now explicitly handle Uninitialized
  and Unknown values in a more rigorous way.

llvm-svn: 47441

llvm-svn: 47357

Fixed bug in transfer functions for sizeof(*); we were incorrectly evaluating to
a value of the wrong type.

Fixed bug in transfer functions for compound assignments where we did not properly
handle assignments involving dereferences of symbolic values.

llvm-svn: 47190

llvm-svn: 47147

Moved driver logic for --grsimple to GRSimpleVals.cpp.

llvm-svn: 47137

from RValues to GRTransferFuncs/GRSimpleVals.

llvm-svn: 47131

llvm-svn: 47126

these operations) into GRTransferFuncs and its subclasses.  Originally all
of this logic was handled by the class RValue, but in reality different
analyses will want more flexibility on how they evaluate different values.

Transfer functions migrated so far: "Cast"

llvm-svn: 47125