1 //===- MIRPrinter.cpp - MIR serialization format printer ------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the class that prints out the LLVM IR and machine
11 // functions using the MIR serialization format.
13 //===----------------------------------------------------------------------===//
15 #include "MIRPrinter.h"
16 #include "llvm/ADT/STLExtras.h"
17 #include "llvm/CodeGen/MachineFunction.h"
18 #include "llvm/CodeGen/MIRYamlMapping.h"
19 #include "llvm/IR/BasicBlock.h"
20 #include "llvm/IR/Module.h"
21 #include "llvm/Support/MemoryBuffer.h"
22 #include "llvm/Support/raw_ostream.h"
23 #include "llvm/Support/YAMLTraits.h"
24 #include "llvm/Target/TargetInstrInfo.h"
25 #include "llvm/Target/TargetSubtargetInfo.h"
31 /// This class prints out the machine functions using the MIR serialization
37 MIRPrinter(raw_ostream &OS) : OS(OS) {}
39 void print(const MachineFunction &MF);
41 void convert(yaml::MachineBasicBlock &YamlMBB, const MachineBasicBlock &MBB);
44 /// This class prints out the machine instructions using the MIR serialization
50 MIPrinter(raw_ostream &OS) : OS(OS) {}
52 void print(const MachineInstr &MI);
55 } // end anonymous namespace
60 /// This struct serializes the LLVM IR module.
61 template <> struct BlockScalarTraits<Module> {
62 static void output(const Module &Mod, void *Ctxt, raw_ostream &OS) {
63 Mod.print(OS, nullptr);
65 static StringRef input(StringRef Str, void *Ctxt, Module &Mod) {
66 llvm_unreachable("LLVM Module is supposed to be parsed separately");
71 } // end namespace yaml
72 } // end namespace llvm
74 void MIRPrinter::print(const MachineFunction &MF) {
75 yaml::MachineFunction YamlMF;
76 YamlMF.Name = MF.getName();
77 YamlMF.Alignment = MF.getAlignment();
78 YamlMF.ExposesReturnsTwice = MF.exposesReturnsTwice();
79 YamlMF.HasInlineAsm = MF.hasInlineAsm();
80 for (const auto &MBB : MF) {
81 yaml::MachineBasicBlock YamlMBB;
82 convert(YamlMBB, MBB);
83 YamlMF.BasicBlocks.push_back(YamlMBB);
89 void MIRPrinter::convert(yaml::MachineBasicBlock &YamlMBB,
90 const MachineBasicBlock &MBB) {
91 // TODO: Serialize unnamed BB references.
92 if (const auto *BB = MBB.getBasicBlock())
93 YamlMBB.Name = BB->hasName() ? BB->getName() : "<unnamed bb>";
96 YamlMBB.Alignment = MBB.getAlignment();
97 YamlMBB.AddressTaken = MBB.hasAddressTaken();
98 YamlMBB.IsLandingPad = MBB.isLandingPad();
100 // Print the machine instructions.
101 YamlMBB.Instructions.reserve(MBB.size());
103 for (const auto &MI : MBB) {
104 raw_string_ostream StrOS(Str);
105 MIPrinter(StrOS).print(MI);
106 YamlMBB.Instructions.push_back(StrOS.str());
111 void MIPrinter::print(const MachineInstr &MI) {
112 const auto &SubTarget = MI.getParent()->getParent()->getSubtarget();
113 const auto *TII = SubTarget.getInstrInfo();
114 assert(TII && "Expected target instruction info");
116 OS << TII->getName(MI.getOpcode());
117 // TODO: Print the instruction flags, machine operands, machine mem operands.
120 void llvm::printMIR(raw_ostream &OS, const Module &M) {
121 yaml::Output Out(OS);
122 Out << const_cast<Module &>(M);
125 void llvm::printMIR(raw_ostream &OS, const MachineFunction &MF) {
126 MIRPrinter Printer(OS);