1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/tools/llvm-exegesis/lib/RegisterValue.h b/llvm/tools/llvm-exegesis/lib/RegisterValue.h
index 51ea30ac8eb..689e354e241 100644
--- a/llvm/tools/llvm-exegesis/lib/RegisterValue.h
+++ b/llvm/tools/llvm-exegesis/lib/RegisterValue.h
@@ -14,6 +14,9 @@
 ///
 //===----------------------------------------------------------------------===//
 
+#ifndef LLVM_TOOLS_LLVM_EXEGESIS_REGISTERVALUE_H
+#define LLVM_TOOLS_LLVM_EXEGESIS_REGISTERVALUE_H
+
 #include <llvm/ADT/APFloat.h>
 #include <llvm/ADT/APInt.h>
 
@@ -22,6 +25,7 @@ namespace exegesis {
 
 // A simple object storing the value for a particular register.
 struct RegisterValue {
+  static RegisterValue zero(unsigned Reg) { return {Reg, llvm::APInt()}; }
   unsigned Register;
   llvm::APInt Value;
 };
@@ -45,3 +49,5 @@ llvm::APInt bitcastFloatValue(const llvm::fltSemantics &FltSemantics,
 
 } // namespace exegesis
 } // namespace llvm
+
+#endif // LLVM_TOOLS_LLVM_EXEGESIS_REGISTERVALUE_H