| Age | Commit message (Collapse) | Author |
|---|
|
comment
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@178153 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
The algorithm used here was ridiculously slow when a potential back-edge
pointed to a node that already had a lot of successors. The previous commit
makes this feature unnecessary anyway.
This reverts r177468 / f4cf6b10f863b9bc716a09b2b2a8c497dcc6aa9b.
Conflicts:
lib/StaticAnalyzer/Core/BugReporter.cpp
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177765 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
Having a trimmed graph with no cycles (a DAG) is much more convenient for
trying to find shortest paths, which is exactly what BugReporter needs to do.
Part of the performance work for <rdar://problem/13433687>.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177468 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
...in favor of this typedef:
typedef llvm::DenseMap<const ExplodedNode *, const ExplodedNode *>
InterExplodedGraphMap;
Use this everywhere the previous class and typedef were used.
Took the opportunity to ArrayRef-ize ExplodedGraph::trim while I'm at it.
No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177215 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
LLVM codebase.
This potentially reduces a performance optimization of throwing away
PreStmtPurgeDeadSymbols nodes. I'll investigate the performance impact
soon and see if we need something better.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176149 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
or predecessor.
These nodes are never consulted by any analyzer client code, so they are
used only for machinery for removing dead bindings. Once successor nodes
are generated they can be safely removed.
This greatly reduces the amount of nodes that are generated in some case,
lowering the memory regression when analyzing Sema.cpp introduced by
r176010 from 14% to 2%.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176050 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
ExplodedNode pruning.
r175988 modified the ExplodedGraph trimming algorithm to retain all
nodes for "lvalue" expressions. This patch refines that notion to
only "interesting" expressions that would be used for diagnostics.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176010 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
fields.
This required more changes than I originally expected:
- ObjCIvarRegion implements "canPrintPretty" et al
- DereferenceChecker indicates the null pointer source is an ivar
- bugreporter::trackNullOrUndefValue() uses an alternate algorithm
to compute the location region to track by scouring the ExplodedGraph.
This allows us to get the actual MemRegion for variables, ivars,
fields, etc. We only hand construct a VarRegion for C++ references.
- ExplodedGraph no longer drops nodes for expressions that are marked
'lvalue'. This is to facilitate the logic in the previous bullet.
This may lead to a slight increase in size in the ExplodedGraph,
which I have not measured, but it is likely not to be a big deal.
I have validated each of the changed plist output.
Fixes <rdar://problem/12114812>
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175988 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
See r175462 for another example/more details.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175812 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169530 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
uncovered.
This required manually correcting all of the incorrect main-module
headers I could find, and running the new llvm/utils/sort_includes.py
script over the files.
I also manually added quite a few missing headers that were uncovered by
shuffling the order or moving headers up to be main-module-headers.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169237 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
Additionally, don't collect PostStore nodes -- they are often used in
path diagnostics.
Previously, we tried to track null arguments in the same way as any other
null values, but in many cases the necessary nodes had already been
collected (a memory optimization in ExplodedGraph). Now, we fall back to
using the value of the argument at the time of the call, which may not
always match the actual contents of the region, but often will.
This is a precursor to improving our suppression heuristic.
<rdar://problem/12350829>
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166940 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
After every 1000 CFGElements processed, the ExplodedGraph trims out nodes
that satisfy a number of criteria for being "boring" (single predecessor,
single successor, and more). Rather than controlling this with a cc1 option,
which can only disable this behavior, we now have an analyzer-config option,
'graph-trim-interval', which can change this interval from 1000 to something
else. Setting the value to 0 disables reclamation.
The next commit relies on this behavior to actually test anything.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166528 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
This is intended to allow visitors to make decisions about whether a
BugReport is likely a false positive. Currently there are no visitors
making use of this feature, so there are no tests.
When a BugReport is marked invalid, the invalidator must provide a key
that identifies the invaliation (intended to be the visitor type and a
context pointer of some kind). This allows us to reverse the decision
later on. Being able to reverse a decision about invalidation gives us more
flexibility, and allows us to formulate conditions like "this report is
invalid UNLESS the original argument is 'foo'". We can use this to
fine-tune our false-positive suppression (coming soon).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164446 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163394 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
(as this previously was the case before this was refactored). We also shouldn't
need to specially handle BinaryOperators since the eagerly-assume heuristic tags
such nodes.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163374 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
The two callers are using this in order to be conservative, so let's just
clarify the information that's actually being provided here. This is not
related to inlining decisions in any way.
No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162717 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162216 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
We shouldn't be reinventing our own wheels. This also paves the way for
marking different kinds of sinks.
No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162154 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160815 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
These are currently unused, but are intended to be used in lieu of PreStmt
and PostStmt when the call is implicit (e.g. an automatic object destructor).
This also modifies the Data1 field of ProgramPoints to allow storing any
pointer-sized value, as opposed to only aligned pointers. This is necessary
to store SourceLocations.
There is currently no BugReporter support for these; they should be skipped
over in any diagnostic output.
This commit also tags checkers that currently rely on function calls only
occurring at StmtPoints.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160019 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
This involved refactoring some common pointer-escapes code onto CallEvent,
then having MallocChecker use those callbacks for whether or not to consider
a pointer's /ownership/ as escaping. This still needs to be pinned down, and
probably we want to make the new argumentsMayEscape() function a little more
discerning (content invalidation vs. ownership/metadata invalidation), but
this is a good improvement.
As a bonus, also remove CallOrObjCMessage from the source completely.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159557 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
(Committed in r159038 by mistake.)
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159040 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
This would be useful to investigate performance issues.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159038 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
explicitly.
This will make it easier to add inlining support to more expressions.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@157870 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
When we timeout or exceed a max number of blocks within an inlined
function, we retry with no inlining starting from a node right before
the CallEnter node. We assume the state of that node is the state of the
program before we start evaluating the call. However, the node pruning
removes this node as unimportant.
Teach the node pruning to keep the predecessors of the call enter nodes.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@157860 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
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.)
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155244 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
CoreEngine. Also have it based on adding predecessors/successors, not node allocation. No measurable performance change."
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150722 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
have it based on adding predecessors/successors, not node allocation. No measurable performance change.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150720 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
change.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150719 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149798 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149320 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
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.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149081 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
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.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148888 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
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.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147904 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
http://llvm.org/docs/CodingStandards.html#ll_virtual_anch
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146959 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
This prevents caching out on nodes with different sink flag.
(This is a cleaner fix for radar://10376675).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143517 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
tagged PostStmts.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@137697 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@137665 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
and libStaticAnalyzer[*]. It was highly inconsistent, and very ugly to look at.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@137537 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
LLVM.h imports
them into the clang namespace.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135852 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
Luis Felipe Strano Moraes!
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129559 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
back by one pointer.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126020 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
managed by ExplodedNodes.
This reduces memory usage of the analyzer on sqlite by another 5%.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125260 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
'include/clang/StaticAnalyzer/Core' and 'include/clang/StaticAnalyzer/Checkers'.
This layout matches lib/StaticAnalyzer, which corresponds to two StaticAnalyzer libraries.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125251 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
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.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125154 91177308-0d34-0410-b5e6-96231b3b80d8
|
|
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.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125124 91177308-0d34-0410-b5e6-96231b3b80d8
|
