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+//===- LowerExpectIntrinsic.h - LowerExpectIntrinsic pass -------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+/// \file
+///
+/// The header file for the LowerExpectIntrinsic pass as used by the new pass
+/// manager.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TRANSFORMS_SCALAR_LOWEREXPECTINTRINSIC_H
+#define LLVM_TRANSFORMS_SCALAR_LOWEREXPECTINTRINSIC_H
+
+#include "llvm/IR/Function.h"
+#include "llvm/IR/PassManager.h"
+
+namespace llvm {
+
+class LowerExpectIntrinsicPass {
+public:
+ static StringRef name() { return "LowerExpectIntrinsicPass"; }
+
+ /// \brief Run the pass over the function.
+ ///
+ /// This will lower all of th expect intrinsic calls in this function into
+ /// branch weight metadata. That metadata will subsequently feed the analysis
+ /// of the probabilities and frequencies of the CFG. After running this pass,
+ /// no more expect intrinsics remain, allowing the rest of the optimizer to
+ /// ignore them.
+ PreservedAnalyses run(Function &F);
+};
+
+}
+
+#endif