include/llvm/Transforms/IPO/ArgumentPromotion.h

   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
  16 namespace 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.
  23 class ArgumentPromotionPass : public PassInfoMixin<ArgumentPromotionPass> {
  24   unsigned MaxElements;
  25
  26 public:
  27   ArgumentPromotionPass(unsigned MaxElements = 3u) : 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