llvm/lib/CodeGen/MIRPrintingPass.cpp

   1 //===- MIRPrintingPass.cpp - Pass that prints out using the MIR format ----===//
   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 pass that prints out the LLVM module using the MIR
  10 // serialization format.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "llvm/CodeGen/MIRPrinter.h"
  15 #include "llvm/CodeGen/MachineFunctionPass.h"
  16 #include "llvm/CodeGen/Passes.h"
  17 #include "llvm/InitializePasses.h"
  18 #include "llvm/Support/Debug.h"
  19 #include "llvm/Support/raw_ostream.h"
  20
  21 using namespace llvm;
  22
  23 namespace {
  24
  25 /// This pass prints out the LLVM IR to an output stream using the MIR
  26 /// serialization format.
  27 struct MIRPrintingPass : public MachineFunctionPass {
  28   static char ID;
  29   raw_ostream &OS;
  30   std::string MachineFunctions;
  31
  32   MIRPrintingPass() : MachineFunctionPass(ID), OS(dbgs()) {}
  33   MIRPrintingPass(raw_ostream &OS) : MachineFunctionPass(ID), OS(OS) {}
  34
  35   StringRef getPassName() const override { return "MIR Printing Pass"; }
  36
  37   void getAnalysisUsage(AnalysisUsage &AU) const override {
  38     AU.setPreservesAll();
  39     MachineFunctionPass::getAnalysisUsage(AU);
  40   }
  41
  42   bool runOnMachineFunction(MachineFunction &MF) override {
  43     std::string Str;
  44     raw_string_ostream StrOS(Str);
  45     printMIR(StrOS, MF);
  46     MachineFunctions.append(StrOS.str());
  47     return false;
  48   }
  49
  50   bool doFinalization(Module &M) override {
  51     printMIR(OS, M);
  52     OS << MachineFunctions;
  53     return false;
  54   }
  55 };
  56
  57 char MIRPrintingPass::ID = 0;
  58
  59 } // end anonymous namespace
  60
  61 char &llvm::MIRPrintingPassID = MIRPrintingPass::ID;
  62 INITIALIZE_PASS(MIRPrintingPass, "mir-printer", "MIR Printer", false, false)
  63
  64 namespace llvm {
  65
  66 MachineFunctionPass *createPrintMIRPass(raw_ostream &OS) {
  67   return new MIRPrintingPass(OS);
  68 }
  69
  70 } // end namespace llvm