| //===- InstCombine.h - InstCombine pass -------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| /// \file |
| /// |
| /// This file provides the primary interface to the instcombine pass. This pass |
| /// is suitable for use in the new pass manager. For a pass that works with the |
| /// legacy pass manager, please look for \c createInstructionCombiningPass() in |
| /// Scalar.h. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_TRANSFORMS_INSTCOMBINE_INSTCOMBINE_H |
| #define LLVM_TRANSFORMS_INSTCOMBINE_INSTCOMBINE_H |
| |
| #include "llvm/IR/Function.h" |
| #include "llvm/IR/PassManager.h" |
| #include "llvm/Transforms/InstCombine/InstCombineWorklist.h" |
| |
| namespace llvm { |
| |
| class InstCombinePass : public PassInfoMixin<InstCombinePass> { |
| InstCombineWorklist Worklist; |
| bool ExpensiveCombines; |
| |
| public: |
| static StringRef name() { return "InstCombinePass"; } |
| |
| explicit InstCombinePass(bool ExpensiveCombines = true) |
| : ExpensiveCombines(ExpensiveCombines) {} |
| |
| PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM); |
| }; |
| |
| /// \brief The legacy pass manager's instcombine pass. |
| /// |
| /// This is a basic whole-function wrapper around the instcombine utility. It |
| /// will try to combine all instructions in the function. |
| class InstructionCombiningPass : public FunctionPass { |
| InstCombineWorklist Worklist; |
| const bool ExpensiveCombines; |
| |
| public: |
| static char ID; // Pass identification, replacement for typeid |
| |
| InstructionCombiningPass(bool ExpensiveCombines = true) |
| : FunctionPass(ID), ExpensiveCombines(ExpensiveCombines) { |
| initializeInstructionCombiningPassPass(*PassRegistry::getPassRegistry()); |
| } |
| |
| void getAnalysisUsage(AnalysisUsage &AU) const override; |
| bool runOnFunction(Function &F) override; |
| }; |
| } |
| |
| #endif |