summaryrefslogtreecommitdiffstats
path: root/clang/lib/Analysis/LiveVariables.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'clang/lib/Analysis/LiveVariables.cpp')
-rw-r--r--clang/lib/Analysis/LiveVariables.cpp14
1 files changed, 13 insertions, 1 deletions
diff --git a/clang/lib/Analysis/LiveVariables.cpp b/clang/lib/Analysis/LiveVariables.cpp
index 84e268f3fda..e6fd1627e2d 100644
--- a/clang/lib/Analysis/LiveVariables.cpp
+++ b/clang/lib/Analysis/LiveVariables.cpp
@@ -112,6 +112,11 @@ public:
void VisitUnaryOperator(UnaryOperator* U);
void Visit(Stmt *S);
void VisitTerminator(CFGBlock* B);
+
+ /// VisitConditionVariableInit - Handle the initialization of condition
+ /// variables at branches. Valid statements include IfStmt, ForStmt,
+ /// WhileStmt, and SwitchStmt.
+ void VisitConditionVariableInit(Stmt *S);
void SetTopValue(LiveVariables::ValTy& V) {
V = AD.AlwaysLive;
@@ -126,7 +131,9 @@ void TransferFuncs::Visit(Stmt *S) {
if (AD.Observer)
AD.Observer->ObserveStmt(S,AD,LiveState);
- if (getCFG().isBlkExpr(S)) LiveState(S,AD) = Dead;
+ if (getCFG().isBlkExpr(S))
+ LiveState(S, AD) = Dead;
+
StmtVisitor<TransferFuncs,void>::Visit(S);
}
else if (!getCFG().isBlkExpr(S)) {
@@ -142,6 +149,11 @@ void TransferFuncs::Visit(Stmt *S) {
LiveState(S,AD) = Alive;
}
}
+
+void TransferFuncs::VisitConditionVariableInit(Stmt *S) {
+ assert(!getCFG().isBlkExpr(S));
+ CFGRecStmtVisitor<TransferFuncs>::VisitConditionVariableInit(S);
+}
void TransferFuncs::VisitTerminator(CFGBlock* B) {
OpenPOWER on IntegriCloud