llvm/llvm/include/llvm/Transforms/IPO/Inliner.h

//===- Inliner.h - Inliner pass and infrastructure --------------*- 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
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_TRANSFORMS_IPO_INLINER_H
#define LLVM_TRANSFORMS_IPO_INLINER_H

#include "llvm/Analysis/CGSCCPassManager.h"
#include "llvm/Analysis/InlineAdvisor.h"
#include "llvm/Analysis/InlineCost.h"
#include "llvm/Analysis/LazyCallGraph.h"
#include "llvm/Analysis/Utils/ImportedFunctionsInliningStatistics.h"
#include "llvm/IR/PassManager.h"

namespace llvm {

/// The inliner pass for the new pass manager.
///
/// This pass wires together the inlining utilities and the inline cost
/// analysis into a CGSCC pass. It considers every call in every function in
/// the SCC and tries to inline if profitable. It can be tuned with a number of
/// parameters to control what cost model is used and what tradeoffs are made
/// when making the decision.
///
/// It should be noted that the legacy inliners do considerably more than this
/// inliner pass does. They provide logic for manually merging allocas, and
/// doing considerable DCE including the DCE of dead functions. This pass makes
/// every attempt to be simpler. DCE of functions requires complex reasoning
/// about comdat groups, etc. Instead, it is expected that other more focused
/// passes be composed to achieve the same end result.
class InlinerPass : public PassInfoMixin<InlinerPass> { … };

/// Module pass, wrapping the inliner pass. This works in conjunction with the
/// InlineAdvisorAnalysis to facilitate inlining decisions taking into account
/// module-wide state, that need to keep track of inter-inliner pass runs, for
/// a given module. An InlineAdvisor is configured and kept alive for the
/// duration of the ModuleInlinerWrapperPass::run.
class ModuleInlinerWrapperPass
    : public PassInfoMixin<ModuleInlinerWrapperPass> { … };
} // end namespace llvm

#endif // LLVM_TRANSFORMS_IPO_INLINER_H