Transforms/IPO/ArgumentPromotion.h

0001 //===- ArgumentPromotion.h - Promote by-reference arguments -----*- C++ -*-===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008
0009 #ifndef LLVM_TRANSFORMS_IPO_ARGUMENTPROMOTION_H
0010 #define LLVM_TRANSFORMS_IPO_ARGUMENTPROMOTION_H
0011
0012 #include "llvm/Analysis/CGSCCPassManager.h"
0013 #include "llvm/Analysis/LazyCallGraph.h"
0014 #include "llvm/IR/PassManager.h"
0015
0016 namespace llvm {
0017
0018 /// Argument promotion pass.
0019 ///
0020 /// This pass walks the functions in each SCC and for each one tries to
0021 /// transform it and all of its callers to replace indirect arguments with
0022 /// direct (by-value) arguments.
0023 class ArgumentPromotionPass : public PassInfoMixin<ArgumentPromotionPass> {
0024   unsigned MaxElements;
0025
0026 public:
0027   ArgumentPromotionPass(unsigned MaxElements = 2u) : MaxElements(MaxElements) {}
0028
0029   PreservedAnalyses run(LazyCallGraph::SCC &C, CGSCCAnalysisManager &AM,
0030                         LazyCallGraph &CG, CGSCCUpdateResult &UR);
0031 };
0032
0033 } // end namespace llvm
0034
0035 #endif // LLVM_TRANSFORMS_IPO_ARGUMENTPROMOTION_H