34 lines · cpp
1//===- ReduceInstructionFlagsMIR.cpp - Specialized Delta Pass -------------===//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-exception6//7//===----------------------------------------------------------------------===//8//9// This file implements a function which calls the Generic Delta pass in order10// to reduce uninteresting MachineInstr flags from the MachineFunction.11//12//===----------------------------------------------------------------------===//13 14#include "ReduceInstructionFlagsMIR.h"15#include "llvm/CodeGen/MachineFunction.h"16#include "llvm/CodeGen/MachineModuleInfo.h"17 18using namespace llvm;19 20void llvm::reduceInstructionFlagsMIRDeltaPass(Oracle &O,21 ReducerWorkItem &WorkItem) {22 for (const Function &F : WorkItem.getModule()) {23 if (auto *MF = WorkItem.MMI->getMachineFunction(F)) {24 for (MachineBasicBlock &MBB : *MF) {25 for (MachineInstr &MI : MBB) {26 // TODO: Should this clear flags individually?27 if (MI.getFlags() != 0 && !O.shouldKeep())28 MI.setFlags(0);29 }30 }31 }32 }33}34