now store in the state essentially which branch we took. This removes
a bunch of bogus assumptions (and likely bugs), reduces the complexity of
the implementation, and facilitates more optimizations.
llvm-svn: 47613
symbolic store: VarDecl's inserted into the sweep may not always bind to
anything; handle this special case just like bindings to uninitialized values.
llvm-svn: 47550
wrapping an EnumConstantDecl evaluates to an integer type that has a different
signedness than the APSInt stored in the EnumConstantDecl. Will file a Bugzilla
report.
llvm-svn: 47548
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
CharacterLiterals. This may not be a permanent solution; it doesn't cost that
much, however, to create a few additional states, and solves a whole bunch
of edge cases when handling ?, ||, and &&.
llvm-svn: 47299
Added more boilerplate transfer function support for pointer arithmetic.
Added more pretty-printing support for symbolic constraints.
Added transfer function support for handling enum values.
Minor pointer types cleanup in ExplodedGraphImpl.
llvm-svn: 47183
referenced by an RValue, instead of having to query the type of the RValue.
Modified ValueState::RemoveDeadBindings to also prune dead symbols.
llvm-svn: 47142
factories.
Fixed a horrible bug in lval:DeclVar::classof(RValue* V); we weren't checking
V was an LValue, allowing nonlval::ConcereteInts to match isa<lval::DeclVar>.
llvm-svn: 46976
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
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
Ted Kremenek