Consumed analysis: improve loop handling. The prior version of the analysis
marked all variables as "unknown" at the start of a loop. The new version
keeps the initial state of variables unchanged, but issues a warning if the
state at the end of the loop is different from the state at the beginning.
This patch will eventually be replaced with a more precise analysis.
Initial patch by chris.wailes@gmail.com. Reviewed and edited by
delesley@google.com.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@192314 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/AnalysisBasedWarnings.cpp b/lib/Sema/AnalysisBasedWarnings.cpp
index a206acd..53e53b2 100644
--- a/lib/Sema/AnalysisBasedWarnings.cpp
+++ b/lib/Sema/AnalysisBasedWarnings.cpp
@@ -1477,6 +1477,13 @@
}
}
+ void warnLoopStateMismatch(SourceLocation Loc, StringRef VariableName) {
+ PartialDiagnosticAt Warning(Loc, S.PDiag(diag::warn_loop_state_mismatch) <<
+ VariableName);
+
+ Warnings.push_back(DelayedDiag(Warning, OptionalNotes()));
+ }
+
void warnReturnTypestateForUnconsumableType(SourceLocation Loc,
StringRef TypeName) {
PartialDiagnosticAt Warning(Loc, S.PDiag(