forked from OSchip/llvm-project
dda42164ec
StaticAnalyzer uses the CFG-based RelaxedLiveVariables analysis in order to,
in particular, figure out values of which expressions are still needed.
When the expression becomes "dead", it is garbage-collected during
the dead binding scan.
Expressions that constitute branches/bodies of control flow statements,
eg. `E1' in `if (C1) E1;' but not `E2' in `if (C2) { E2; }', were kept alive
for too long. This caused false positives in MoveChecker because it relies
on cleaning up loop-local variables when they go out of scope, but some of those
live-for-too-long expressions were keeping a reference to those variables.
Fix liveness analysis to correctly mark these expressions as dead.
Add a debug checker, debug.DumpLiveStmts, in order to test expressions liveness.
Differential Revision: https://reviews.llvm.org/D55566
llvm-svn: 349320
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| .. | ||
| AnalysisDeclContext.cpp | ||
| BodyFarm.cpp | ||
| CFG.cpp | ||
| CFGReachabilityAnalysis.cpp | ||
| CFGStmtMap.cpp | ||
| CMakeLists.txt | ||
| CallGraph.cpp | ||
| CloneDetection.cpp | ||
| CocoaConventions.cpp | ||
| CodeInjector.cpp | ||
| ConstructionContext.cpp | ||
| Consumed.cpp | ||
| Dominators.cpp | ||
| ExprMutationAnalyzer.cpp | ||
| LiveVariables.cpp | ||
| ObjCNoReturn.cpp | ||
| PostOrderCFGView.cpp | ||
| ProgramPoint.cpp | ||
| ReachableCode.cpp | ||
| ThreadSafety.cpp | ||
| ThreadSafetyCommon.cpp | ||
| ThreadSafetyLogical.cpp | ||
| ThreadSafetyTIL.cpp | ||
| UninitializedValues.cpp | ||