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This is needed to ensure that we always report issues in the correct
function. For example, leaks are identified when we call remove dead
bindings. In order to make sure we report a callee's leak in the callee,
we have to run the operation in the callee's context.
This change required quite a bit of infrastructure work since:
- We used to only run remove dead bindings before a given statement;
here we need to run it after the last statement in the function. For
this, we added additional Program Point and special mode in the
SymbolReaper to remove all symbols in context lower than the current
one.
- The call exit operation turned into a sequence of nodes, which are
now guarded by CallExitBegin and CallExitEnd nodes for clarity and
convenience.
(Sorry for the long diff.)
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CoreEngine. Also have it based on adding predecessors/successors, not node allocation. No measurable performance change."
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have it based on adding predecessors/successors, not node allocation. No measurable performance change.
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change.
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functionality change.
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At this point this is largely cosmetic, but it opens the door to replace
ProgramStateRef with a smart pointer that more eagerly acts in the role
of reclaiming unused ProgramState objects.
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inlining) by 30%.
This is accomplished by periodically reclaiming nodes in the graph. This was an optimization
done before the CFG was linearized, but the CFG linearization destroyed that optimization since each
freshly created node couldn't be reclaimed and we only looked at a window of nodes created between
each ProcessStmt. This optimization can be reclaimed my merely expanding the window to N number of nodes.
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inlining for straight C calls.
My hope is to reimplement this from first principles based on the simplifications of removing unneeded node builders
and re-evaluating how C++ calls are handled in the CFG. The hope is to turn inlining "on-by-default" as soon as possible
with a core set of things working well, and then expand over time.
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http://llvm.org/docs/CodingStandards.html#ll_virtual_anch
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This prevents caching out on nodes with different sink flag.
(This is a cleaner fix for radar://10376675).
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tagged PostStmts.
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and libStaticAnalyzer[*]. It was highly inconsistent, and very ugly to look at.
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LLVM.h imports
them into the clang namespace.
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Luis Felipe Strano Moraes!
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back by one pointer.
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managed by ExplodedNodes.
This reduces memory usage of the analyzer on sqlite by another 5%.
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'include/clang/StaticAnalyzer/Core' and 'include/clang/StaticAnalyzer/Checkers'.
This layout matches lib/StaticAnalyzer, which corresponds to two StaticAnalyzer libraries.
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sqlite3 by 7-10% by recylcing "uninteresting" ExplodedNodes.
The optimization involves eagerly pruning ExplodedNodes from the ExplodedGraph that contain
practically no difference between the predecessor and successor nodes. For example, if
the state is different between a predecessor and a node, the node is left in. Only for
the 'environment' component of the state do we not care if the ExplodedNodes are different.
This paves the way for future optimizations where we can reclaim the environment objects.
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Eventually there will also be a lib/StaticAnalyzer/Frontend that will handle initialization and checker registration.
Yet another library to avoid cyclic dependencies between Core and Checkers.
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