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diff --git a/llvm/tools/llvm-exegesis/lib/BenchmarkCode.h b/llvm/tools/llvm-exegesis/lib/BenchmarkCode.h
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+++ b/llvm/tools/llvm-exegesis/lib/BenchmarkCode.h
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+//===-- BenchmarkCode.h -----------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_EXEGESIS_BENCHMARKCODE_H
+#define LLVM_TOOLS_LLVM_EXEGESIS_BENCHMARKCODE_H
+
+#include "llvm/MC/MCInst.h"
+#include <string>
+#include <vector>
+
+namespace exegesis {
+
+// A collection of instructions that are to be assembled, executed and measured.
+struct BenchmarkCode {
+  // The sequence of instructions that are to be repeated.
+  std::vector<llvm::MCInst> Instructions;
+
+  // Before the code is executed some instructions are added to setup the
+  // registers initial values.
+  std::vector<unsigned> RegsToDef;
+
+  // We also need to provide the registers that are live on entry for the
+  // assembler to generate proper prologue/epilogue.
+  std::vector<unsigned> LiveIns;
+
+  // Informations about how this configuration was built.
+  std::string Info;
+};
+
+} // namespace exegesis
+
+#endif // LLVM_TOOLS_LLVM_EXEGESIS_BENCHMARKCODE_H