Add #ifndef guard.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40991 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/PassManagers.h b/include/llvm/PassManagers.h
index 6467aaecd9e8314bd0e3b34e040c8b5982446ef2..00a70b4671935695c26f2e31af8a5715c242888e 100644 (file)
--- a/include/llvm/PassManagers.h
+++ b/include/llvm/PassManagers.h
@@ -84,6 +84,9 @@ class llvm::PMStack;
 // MPPassManagers.
 //===----------------------------------------------------------------------===//
 
+#ifndef PASSMANAGERS_H
+#define PASSMANAGERS_H
+
 namespace llvm {
 
 /// FunctionPassManager and PassManager, two top level managers, serve 
@@ -381,3 +384,6 @@ public:
 
 extern void StartPassTimer(Pass *);
 extern void StopPassTimer(Pass *);
+
+#endif
+