46 lines
1.7 KiB
C++
46 lines
1.7 KiB
C++
//===-- PGOCtxProfLowering.h - Contextual PGO Instr. Lowering ---*- 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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//
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// This file declares the PGOCtxProfLoweringPass class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_INSTRUMENTATION_PGOCTXPROFLOWERING_H
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#define LLVM_TRANSFORMS_INSTRUMENTATION_PGOCTXPROFLOWERING_H
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#include "llvm/IR/PassManager.h"
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namespace llvm {
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class Type;
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class PGOCtxProfLoweringPass
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: public OptionalPassInfoMixin<PGOCtxProfLoweringPass> {
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public:
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explicit PGOCtxProfLoweringPass() = default;
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// True if contextual instrumentation is enabled.
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LLVM_ABI static bool isCtxIRPGOInstrEnabled();
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LLVM_ABI PreservedAnalyses run(Module &M, ModuleAnalysisManager &MAM);
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};
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// Utility pass blocking inlining for any function that may be overridden during
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// linking by a prevailing copy.
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// This avoids confusingly collecting profiles for the same GUID corresponding
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// to different variants of the function. We could do like PGO and identify
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// functions by a (GUID, Hash) tuple, but since the ctxprof "use" waits for
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// thinlto to happen before performing any further optimizations, it's
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// unnecessary to collect profiles for non-prevailing copies.
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class NoinlineNonPrevailing
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: public OptionalPassInfoMixin<NoinlineNonPrevailing> {
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public:
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explicit NoinlineNonPrevailing() = default;
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LLVM_ABI PreservedAnalyses run(Module &M, ModuleAnalysisManager &MAM);
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};
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} // namespace llvm
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#endif
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