When doing reachability analysis for warnings issued under DiagRuntimeBehavior, don't construct a ParentMap or CFGStmtMap.
Instead, create a small set of Stmt* -> CFGBlock* mappings during CFG construction for only the statements we care about
relating to the diagnostics we want to check for reachability.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127396 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/AnalysisContext.cpp b/lib/Analysis/AnalysisContext.cpp
index 0085f3a..461468d 100644
--- a/lib/Analysis/AnalysisContext.cpp
+++ b/lib/Analysis/AnalysisContext.cpp
@@ -74,6 +74,26 @@
return NULL;
}
+void AnalysisContext::registerForcedBlockExpression(const Stmt *stmt) {
+ if (!forcedBlkExprs)
+ forcedBlkExprs = new CFG::BuildOptions::ForcedBlkExprs();
+ // Default construct an entry for 'stmt'.
+ if (const ParenExpr *pe = dyn_cast<ParenExpr>(stmt))
+ stmt = pe->IgnoreParens();
+ (void) (*forcedBlkExprs)[stmt];
+}
+
+const CFGBlock *
+AnalysisContext::getBlockForRegisteredExpression(const Stmt *stmt) {
+ assert(forcedBlkExprs);
+ if (const ParenExpr *pe = dyn_cast<ParenExpr>(stmt))
+ stmt = pe->IgnoreParens();
+ CFG::BuildOptions::ForcedBlkExprs::const_iterator itr =
+ forcedBlkExprs->find(stmt);
+ assert(itr != forcedBlkExprs->end());
+ return itr->second;
+}
+
CFG *AnalysisContext::getCFG() {
if (useUnoptimizedCFG)
return getUnoptimizedCFG();