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-rw-r--r--include/llvm/CodeGen/StackProtector.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/StackProtector.h b/include/llvm/CodeGen/StackProtector.h
index 2bdf4425e24a..ed52db3e6269 100644
--- a/include/llvm/CodeGen/StackProtector.h
+++ b/include/llvm/CodeGen/StackProtector.h
@@ -61,6 +61,12 @@ private:
/// protection when -fstack-protection is used.
unsigned SSPBufferSize = 0;
+ /// VisitedPHIs - The set of PHI nodes visited when determining
+ /// if a variable's reference has been taken. This set
+ /// is maintained to ensure we don't visit the same PHI node multiple
+ /// times.
+ SmallPtrSet<const PHINode *, 16> VisitedPHIs;
+
// A prologue is generated.
bool HasPrologue = false;