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-rw-r--r--llvm/include/llvm/PassSupport.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/include/llvm/PassSupport.h b/llvm/include/llvm/PassSupport.h
index ab90217ce4a8..e95ed7a1d88f 100644
--- a/llvm/include/llvm/PassSupport.h
+++ b/llvm/include/llvm/PassSupport.h
@@ -17,6 +17,10 @@
//
//===----------------------------------------------------------------------===//
+#if !defined(LLVM_PASS_H) || defined(LLVM_PASSSUPPORT_H)
+#error "Do not include <PassSupport.h>; include <Pass.h> instead"
+#endif
+
#ifndef LLVM_PASSSUPPORT_H
#define LLVM_PASSSUPPORT_H