1 files changed, 96 insertions, 0 deletions
diff --git a/contrib/llvm/lib/CodeGen/MIRPrinter.cpp b/contrib/llvm/lib/CodeGen/MIRPrinter.cpp
new file mode 100644
index 0000000..bbf163a
--- /dev/null
+++ b/contrib/llvm/lib/CodeGen/MIRPrinter.cpp
@@ -0,0 +1,96 @@
+//===- MIRPrinter.cpp - MIR serialization format printer ------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the class that prints out the LLVM IR and machine
+// functions using the MIR serialization format.
+//
+//===----------------------------------------------------------------------===//
+
+#include "MIRPrinter.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MIRYamlMapping.h"
+#include "llvm/IR/BasicBlock.h"
+#include "llvm/IR/Module.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/YAMLTraits.h"
+
+using namespace llvm;
+
+namespace {
+
+/// This class prints out the machine functions using the MIR serialization
+/// format.
+class MIRPrinter {
+  raw_ostream &OS;
+
+public:
+  MIRPrinter(raw_ostream &OS) : OS(OS) {}
+
+  void print(const MachineFunction &MF);
+
+  void convert(yaml::MachineBasicBlock &YamlMBB, const MachineBasicBlock &MBB);
+};
+
+} // end anonymous namespace
+
+namespace llvm {
+namespace yaml {
+
+/// This struct serializes the LLVM IR module.
+template <> struct BlockScalarTraits<Module> {
+  static void output(const Module &Mod, void *Ctxt, raw_ostream &OS) {
+    Mod.print(OS, nullptr);
+  }
+  static StringRef input(StringRef Str, void *Ctxt, Module &Mod) {
+    llvm_unreachable("LLVM Module is supposed to be parsed separately");
+    return "";
+  }
+};
+
+} // end namespace yaml
+} // end namespace llvm
+
+void MIRPrinter::print(const MachineFunction &MF) {
+  yaml::MachineFunction YamlMF;
+  YamlMF.Name = MF.getName();
+  YamlMF.Alignment = MF.getAlignment();
+  YamlMF.ExposesReturnsTwice = MF.exposesReturnsTwice();
+  YamlMF.HasInlineAsm = MF.hasInlineAsm();
+  for (const auto &MBB : MF) {
+    yaml::MachineBasicBlock YamlMBB;
+    convert(YamlMBB, MBB);
+    YamlMF.BasicBlocks.push_back(YamlMBB);
+  }
+  yaml::Output Out(OS);
+  Out << YamlMF;
+}
+
+void MIRPrinter::convert(yaml::MachineBasicBlock &YamlMBB,
+                         const MachineBasicBlock &MBB) {
+  // TODO: Serialize unnamed BB references.
+  if (const auto *BB = MBB.getBasicBlock())
+    YamlMBB.Name = BB->hasName() ? BB->getName() : "<unnamed bb>";
+  else
+    YamlMBB.Name = "";
+  YamlMBB.Alignment = MBB.getAlignment();
+  YamlMBB.AddressTaken = MBB.hasAddressTaken();
+  YamlMBB.IsLandingPad = MBB.isLandingPad();
+}
+
+void llvm::printMIR(raw_ostream &OS, const Module &M) {
+  yaml::Output Out(OS);
+  Out << const_cast<Module &>(M);
+}
+
+void llvm::printMIR(raw_ostream &OS, const MachineFunction &MF) {
+  MIRPrinter Printer(OS);
+  Printer.print(MF);
+}