| //===- LowerExpectIntrinsic.h - LowerExpectIntrinsic pass -------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| /// \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 { |
| |
| struct LowerExpectIntrinsicPass : PassInfoMixin<LowerExpectIntrinsicPass> { |
| /// Run the pass over the function. |
| /// |
| /// This will lower all of the 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, FunctionAnalysisManager &); |
| }; |
| |
| } |
| |
| #endif |