Fixed bug in dispatching to the correct transfer function for |=, &=, and ^|.

llvm-svn: 46880

llvm-svn: 46875

Renamed UninitializedValue to UninitializedVal.

llvm-svn: 46874

Minor cleanups with generating nodes for NULL-pointer dereferences.

llvm-svn: 46851

Modified the driver to pass the Diagnostic object to GRConstants.

llvm-svn: 46847

llvm-svn: 46846

llvm-svn: 46843

llvm-svn: 46840

Fixed bug in RemoveDeadBindings by implementing a simple "mark-and-sweep"
cleaner over the bindings, starting from the Decls and block-level expressions
that are considered "live" by the Liveness analysis.

Fixed bug in isa<> implementation for class LValue.

Added "VisitDeclRefExpr" to GRConstants so that we explicitly bind the current
value of variable to the Block-level Expression (i.e., when the DeclRefExpr is
at the CFGBlock level).

llvm-svn: 46839

as the initializers for DeclStmts were not being registered as being
live at the start of the DeclStmt.

llvm-svn: 46837

Fixed insidious bug in handling dereferences.

llvm-svn: 46835

code structure is more suitable for additional symbolic analysis.

llvm-svn: 46831

llvm-svn: 46815

"if(x)". On the true branch we know the value is != 0, and on the false branch
we know it is 0.

llvm-svn: 46814

llvm-svn: 46797

Removed lval::SymIntConstraintVal; wrappers for symbolic constraints are not lvalues (only integers that evaluate to !0 or 0).

llvm-svn: 46796

symbols (for constant integers).

llvm-svn: 46795

ValueState no longer inherits FoldingSetNode (not needed).
Removed redundant operator= implementation for ValueState (it simply did the default behavior).

llvm-svn: 46794

using the bump-pointer allocator and a placed new; we accidentally allocated
a ValueStateImpl* instead, causing an overrun when we did a placed new().

llvm-svn: 46793

This action will add constraints to the possible values of a symbol.
Still needs to be debugged.

llvm-svn: 46789

nonlval::SymIntConstraintVal.

Reworked transfer function for '==' and '!=' for LValues to return
SymIntConstraintVal when comparing a symbol with a constant.

llvm-svn: 46778

llvm-svn: 46772

contraint between a symbol and an integer constant.

llvm-svn: 46771

This noticeably cleans up the naming of these classes.

llvm-svn: 46770

transfer function evaluation that represent constraints between symbolic values
and constant integers.

llvm-svn: 46769

for buffers for RValues and States.

llvm-svn: 46759

Added a "ConstantNotEq" map to ValueState (and added necessary typedefs and factory objects to ValueStateManager).

llvm-svn: 46758

llvm-svn: 46756

llvm-svn: 46755

llvm-svn: 46754

structure that can contain several maps, not just one.

llvm-svn: 46744

llvm-svn: 46740

llvm-svn: 46732

__builtin_choose.

llvm-svn: 46731

llvm-svn: 46722

created for GRConstants.  Moved instances of ValueManager and SymbolManager
inside this class.  The goal is to gradually separate more of the state
management from the state transformation.

llvm-svn: 46721

llvm-svn: 46708

Implemented '==' and '!=' for ConcreteIntLValue.

llvm-svn: 46630

llvm-svn: 46624

Moved ValueKey/ValueMap declaration to ValueState.h.

llvm-svn: 46618