1 //===- LowerExpectIntrinsic.h - LowerExpectIntrinsic pass -------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 /// \file 10 /// 11 /// The header file for the LowerExpectIntrinsic pass as used by the new pass 12 /// manager. 13 /// 14 //===----------------------------------------------------------------------===// 15 16 #ifndef LLVM_TRANSFORMS_SCALAR_LOWEREXPECTINTRINSIC_H 17 #define LLVM_TRANSFORMS_SCALAR_LOWEREXPECTINTRINSIC_H 18 19 #include "llvm/IR/Function.h" 20 #include "llvm/IR/PassManager.h" 21 22 namespace llvm { 23 24 struct LowerExpectIntrinsicPass : PassInfoMixin<LowerExpectIntrinsicPass> { 25 /// Run the pass over the function. 26 /// 27 /// This will lower all of the expect intrinsic calls in this function into 28 /// branch weight metadata. That metadata will subsequently feed the analysis 29 /// of the probabilities and frequencies of the CFG. After running this pass, 30 /// no more expect intrinsics remain, allowing the rest of the optimizer to 31 /// ignore them. 32 PreservedAnalyses run(Function &F, FunctionAnalysisManager &); 33 }; 34 35 } 36 37 #endif 38