3 files changed, 29 insertions, 17 deletions
diff --git a/include/llvm/MC/MCInst.h b/include/llvm/MC/MCInst.h
index 29b38dd15d..dc630fe280 100644
--- a/include/llvm/MC/MCInst.h
+++ b/include/llvm/MC/MCInst.h
@@ -17,11 +17,13 @@
 #define LLVM_MC_MCINST_H
 
 #include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringRef.h"
 #include "llvm/System/DataTypes.h"
 
 namespace llvm {
 class raw_ostream;
 class MCAsmInfo;
+class MCInstPrinter;
 class MCExpr;
 
 /// MCOperand - Instances of this class represent operands of the MCInst class.
@@ -125,6 +127,13 @@ public:
 
   void print(raw_ostream &OS, const MCAsmInfo *MAI) const;
   void dump() const;
+
+  /// \brief Dump the MCInst as prettily as possible using the additional MC
+  /// structures, if given. Operators are separated by the \arg Separator
+  /// string.
+  void dump_pretty(raw_ostream &OS, const MCAsmInfo *MAI = 0,
+                   const MCInstPrinter *Printer = 0,
+                   StringRef Separator = " ") const;
 };
 
 
diff --git a/lib/MC/MCAsmStreamer.cpp b/lib/MC/MCAsmStreamer.cpp
index 2025463a80..7a23aecf29 100644
--- a/lib/MC/MCAsmStreamer.cpp
+++ b/lib/MC/MCAsmStreamer.cpp
@@ -623,24 +623,10 @@ void MCAsmStreamer::EmitInstruction(const MCInst &Inst) {
     AddEncodingComment(Inst);
 
   // Show the MCInst if enabled.
-  if (ShowInst) {
-    raw_ostream &OS = GetCommentOS();
-    OS << "<MCInst #" << Inst.getOpcode();
-    
-    StringRef InstName;
-    if (InstPrinter)
-      InstName = InstPrinter->getOpcodeName(Inst.getOpcode());
-    if (!InstName.empty())
-      OS << ' ' << InstName;
-    
-    for (unsigned i = 0, e = Inst.getNumOperands(); i != e; ++i) {
-      OS << "\n  ";
-      Inst.getOperand(i).print(OS, &MAI);
-    }
-    OS << ">\n";
-  }
+  if (ShowInst)
+    Inst.dump_pretty(GetCommentOS(), &MAI, InstPrinter.get(), "\n ");
   
-  // If we have an AsmPrinter, use that to print, otherwise dump the MCInst.
+  // If we have an AsmPrinter, use that to print, otherwise print the MCInst.
   if (InstPrinter)
     InstPrinter->printInst(&Inst);
   else
diff --git a/lib/MC/MCInst.cpp b/lib/MC/MCInst.cpp
index 0634c9faf6..de142dc955 100644
--- a/lib/MC/MCInst.cpp
+++ b/lib/MC/MCInst.cpp
@@ -9,6 +9,7 @@
 
 #include "llvm/MC/MCInst.h"
 #include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCInstPrinter.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
 
@@ -43,6 +44,22 @@ void MCInst::print(raw_ostream &OS, const MCAsmInfo *MAI) const {
   OS << ">";
 }
 
+void MCInst::dump_pretty(raw_ostream &OS, const MCAsmInfo *MAI,
+                         const MCInstPrinter *Printer,
+                         StringRef Separator) const {
+  OS << "<MCInst #" << getOpcode();
+
+  // Show the instruction opcode name if we have access to a printer.
+  if (Printer)
+    OS << ' ' << Printer->getOpcodeName(getOpcode());
+
+  for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
+    OS << Separator;
+    getOperand(i).print(OS, MAI);
+  }
+  OS << ">\n";
+}
+
 void MCInst::dump() const {
   print(dbgs(), 0);
   dbgs() << "\n";