lib/CodeGen/MachineFunctionPrinterPass.cpp

   1 //===-- MachineFunctionPrinterPass.cpp ------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // MachineFunctionPrinterPass implementation.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "llvm/CodeGen/MachineFunction.h"
  15 #include "llvm/CodeGen/MachineFunctionPass.h"
  16 #include "llvm/CodeGen/Passes.h"
  17 #include "llvm/CodeGen/SlotIndexes.h"
  18 #include "llvm/IR/IRPrintingPasses.h"
  19 #include "llvm/Support/Debug.h"
  20 #include "llvm/Support/raw_ostream.h"
  21
  22 using namespace llvm;
  23
  24 namespace {
  25 /// MachineFunctionPrinterPass - This is a pass to dump the IR of a
  26 /// MachineFunction.
  27 ///
  28 struct MachineFunctionPrinterPass : public MachineFunctionPass {
  29   static char ID;
  30
  31   raw_ostream &OS;
  32   const std::string Banner;
  33
  34   MachineFunctionPrinterPass() : MachineFunctionPass(ID), OS(dbgs()) { }
  35   MachineFunctionPrinterPass(raw_ostream &os, const std::string &banner)
  36       : MachineFunctionPass(ID), OS(os), Banner(banner) {}
  37
  38   StringRef getPassName() const override { return "MachineFunction Printer"; }
  39
  40   void getAnalysisUsage(AnalysisUsage &AU) const override {
  41     AU.setPreservesAll();
  42     AU.addUsedIfAvailable<SlotIndexes>();
  43     MachineFunctionPass::getAnalysisUsage(AU);
  44   }
  45
  46   bool runOnMachineFunction(MachineFunction &MF) override {
  47     if (!llvm::isFunctionInPrintList(MF.getName()))
  48       return false;
  49     OS << "# " << Banner << ":\n";
  50     MF.print(OS, getAnalysisIfAvailable<SlotIndexes>());
  51     return false;
  52   }
  53 };
  54
  55 char MachineFunctionPrinterPass::ID = 0;
  56 }
  57
  58 char &llvm::MachineFunctionPrinterPassID = MachineFunctionPrinterPass::ID;
  59 INITIALIZE_PASS(MachineFunctionPrinterPass, "machineinstr-printer",
  60                 "Machine Function Printer", false, false)
  61
  62 namespace llvm {
  63 /// Returns a newly-created MachineFunction Printer pass. The
  64 /// default banner is empty.
  65 ///
  66 MachineFunctionPass *createMachineFunctionPrinterPass(raw_ostream &OS,
  67                                                       const std::string &Banner){
  68   return new MachineFunctionPrinterPass(OS, Banner);
  69 }
  70
  71 }