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-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements a function which calls the Generic Delta pass in order
10// 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