1//===- ArgumentPromotion.h - Promote by-reference arguments -----*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_TRANSFORMS_IPO_ARGUMENTPROMOTION_H
10#define LLVM_TRANSFORMS_IPO_ARGUMENTPROMOTION_H
11
12#include "llvm/Analysis/CGSCCPassManager.h"
13#include "llvm/Analysis/LazyCallGraph.h"
14#include "llvm/IR/PassManager.h"
15
16namespace llvm {
17
18/// Argument promotion pass.
19///
20/// This pass walks the functions in each SCC and for each one tries to
21/// transform it and all of its callers to replace indirect arguments with
22/// direct (by-value) arguments.
23class ArgumentPromotionPass : public PassInfoMixin<ArgumentPromotionPass> {
24 unsigned MaxElements;
25
26public:
27 ArgumentPromotionPass(unsigned MaxElements = 2u) : MaxElements(MaxElements) {}
28
29 PreservedAnalyses run(LazyCallGraph::SCC &C, CGSCCAnalysisManager &AM,
30 LazyCallGraph &CG, CGSCCUpdateResult &UR);
31};
32
33} // end namespace llvm
34
35#endif // LLVM_TRANSFORMS_IPO_ARGUMENTPROMOTION_H
36