39 lines
1.3 KiB
C++
39 lines
1.3 KiB
C++
//===- LowerExpectIntrinsic.h - LowerExpectIntrinsic pass -------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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/// \file
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///
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/// The header file for the LowerExpectIntrinsic pass as used by the new pass
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/// manager.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_SCALAR_LOWEREXPECTINTRINSIC_H
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#define LLVM_TRANSFORMS_SCALAR_LOWEREXPECTINTRINSIC_H
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#include "llvm/IR/PassManager.h"
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#include "llvm/Support/Compiler.h"
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namespace llvm {
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class Function;
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struct LowerExpectIntrinsicPass
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: OptionalPassInfoMixin<LowerExpectIntrinsicPass> {
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/// Run the pass over the function.
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///
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/// This will lower all of the expect intrinsic calls in this function into
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/// branch weight metadata. That metadata will subsequently feed the analysis
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/// of the probabilities and frequencies of the CFG. After running this pass,
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/// no more expect intrinsics remain, allowing the rest of the optimizer to
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/// ignore them.
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LLVM_ABI PreservedAnalyses run(Function &F, FunctionAnalysisManager &);
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};
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}
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#endif
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