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(1) libAnalysis is a generic analysis library that can be used by
Sema. It defines the CFG, basic dataflow analysis primitives, and
inexpensive flow-sensitive analyses (e.g. LiveVariables).
(2) libChecker contains the guts of the static analyzer, incuding the
path-sensitive analysis engine and domain-specific checks.
Now any clients that want to use the frontend to build their own tools
don't need to link in the entire static analyzer.
This change exposes various obvious cleanups that can be made to the
layout of files and headers in libChecker. More changes pending. :)
This change also exposed a layering violation between AnalysisContext
and MemRegion. BlockInvocationContext shouldn't explicitly know about
BlockDataRegions. For now I've removed the BlockDataRegion* from
BlockInvocationContext (removing context-sensitivity; although this
wasn't used yet). We need to have a better way to extend
BlockInvocationContext (and any LocationContext) to add
context-sensitivty.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94406 91177308-0d34-0410-b5e6-96231b3b80d8
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GRStateManager. Having these references was an abstraction violation,
as they really should only be known about GRExprEngine.
This change required adding a new 'ProcessAssume' callback in
GRSubEngine. GRExprEngine implements this callback by calling
'EvalAssume' on all registered Checker objects as well as the
registered GRTransferFunc object.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92549 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90028 91177308-0d34-0410-b5e6-96231b3b80d8
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violation.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86863 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81346 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74136 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73735 91177308-0d34-0410-b5e6-96231b3b80d8
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- Remove the 'isFeasible' flag from all uses of 'Assume'.
- Remove the 'Assume' methods from GRStateManager. Now the only way to
create a new GRState with an assumption is to use the new 'assume' methods
in GRState.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73731 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73648 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69740 91177308-0d34-0410-b5e6-96231b3b80d8
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driver taking lib/Driver.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65811 91177308-0d34-0410-b5e6-96231b3b80d8
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issue I thought it was, but it is still worth ordering Range objects by their APSInt values.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64921 91177308-0d34-0410-b5e6-96231b3b80d8
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When comparing if one Range is "less" than another, compare the actual APSInt
numeric values instead of their pointer addresses. This ensures that the
ImmutableSet in RangeSet always has a consistent ordering between Ranges. This
is critical for generating the same digest/hash for the contents of the sets.
This was a serious performance bug because it would often cause state caching
to be disabled along complicated paths.
Along the way:
- Put Range and RangeSet in the "anonymous namespace" and mark them hidden
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64890 91177308-0d34-0410-b5e6-96231b3b80d8
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Zhongxing Xu. The resultant code is less than 1/2 the size of the original.
Key highlights:
- All CouldBeXXX methods have been removed. Checking for feasibility is now just
done in the AddXXX methods.
- RangeSets now represent "all possible values" explicitly as the range set {
[min, max] } instead of the empty set. The empty set now represents "no
feasible values". This change consolidated much of the core algorithm to only
have one code path instead of alternate paths that considered the empty set to
represent "all possible falues."
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64787 91177308-0d34-0410-b5e6-96231b3b80d8
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ConstraintManager:
- constify getSymVal()
BasicConstraintManager:
- Pull out logic that would be common to ConstraintManagers of a similar nature
and put them in a parent class called 'SimpleConstraintManager'.
RangeConstraintManager:
- Added a new prototype ConstraintManager to track ranges of variables! This
ConstraintManager keeps tracks of ranges of concrete integers that a symbolic
integer may have.
AnalysisConsumer:
- Add driver option to use RangeConstraintManager with GRExprEngine-based
analyses.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64558 91177308-0d34-0410-b5e6-96231b3b80d8
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