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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===- LowerExpectIntrinsic.h - LowerExpectIntrinsic pass -------*- C++ -*-===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | /// \file |
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| 9 | /// |
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| 10 | /// The header file for the LowerExpectIntrinsic pass as used by the new pass |
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| 11 | /// manager. |
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| 12 | /// |
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| 13 | //===----------------------------------------------------------------------===// |
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| 14 | |||
| 15 | #ifndef LLVM_TRANSFORMS_SCALAR_LOWEREXPECTINTRINSIC_H |
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| 16 | #define LLVM_TRANSFORMS_SCALAR_LOWEREXPECTINTRINSIC_H |
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| 17 | |||
| 18 | #include "llvm/IR/PassManager.h" |
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| 19 | |||
| 20 | namespace llvm { |
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| 21 | |||
| 22 | class Function; |
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| 23 | |||
| 24 | struct LowerExpectIntrinsicPass : PassInfoMixin<LowerExpectIntrinsicPass> { |
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| 25 | /// Run the pass over the function. |
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| 26 | /// |
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| 27 | /// This will lower all of the expect intrinsic calls in this function into |
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| 28 | /// branch weight metadata. That metadata will subsequently feed the analysis |
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| 29 | /// of the probabilities and frequencies of the CFG. After running this pass, |
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| 30 | /// no more expect intrinsics remain, allowing the rest of the optimizer to |
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| 31 | /// ignore them. |
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| 32 | PreservedAnalyses run(Function &F, FunctionAnalysisManager &); |
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| 33 | }; |
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| 34 | |||
| 35 | } |
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| 36 | |||
| 37 | #endif |