1 files changed, 39 insertions, 0 deletions
diff --git a/lib/Target/X86/X86AsmPrinter.cpp b/lib/Target/X86/X86AsmPrinter.cpp
index 1862306c16..3e9fbb09c9 100644
--- a/lib/Target/X86/X86AsmPrinter.cpp
+++ b/lib/Target/X86/X86AsmPrinter.cpp
@@ -24,6 +24,7 @@
 #include "llvm/DerivedTypes.h"
 #include "llvm/Module.h"
 #include "llvm/Type.h"
+#include "llvm/Analysis/DebugInfo.h"
 #include "llvm/Assembly/Writer.h"
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCContext.h"
@@ -659,6 +660,44 @@ void X86AsmPrinter::EmitEndOfAsmFile(Module &M) {
   }
 }
 
+MachineLocation 
+X86AsmPrinter::getDebugValueLocation(const MachineInstr *MI) const {
+  MachineLocation Location;
+  assert (MI->getNumOperands() == 7 && "Invalid no. of machine operands!");
+  // Frame address.  Currently handles register +- offset only.
+  
+  if (MI->getOperand(0).isReg() && MI->getOperand(3).isImm())
+    Location.set(MI->getOperand(0).getReg(), MI->getOperand(3).getImm());
+  return Location;
+}
+
+void X86AsmPrinter::PrintDebugValueComment(const MachineInstr *MI,
+                                           raw_ostream &O) {
+  // Only the target-dependent form of DBG_VALUE should get here.
+  // Referencing the offset and metadata as NOps-2 and NOps-1 is
+  // probably portable to other targets; frame pointer location is not.
+  unsigned NOps = MI->getNumOperands();
+  assert(NOps==7);
+  O << '\t' << MAI->getCommentString() << "DEBUG_VALUE: ";
+  // cast away const; DIetc do not take const operands for some reason.
+  DIVariable V(const_cast<MDNode *>(MI->getOperand(NOps-1).getMetadata()));
+  if (V.getContext().isSubprogram())
+    O << DISubprogram(V.getContext()).getDisplayName() << ":";
+  O << V.getName();
+  O << " <- ";
+  // Frame address.  Currently handles register +- offset only.
+  O << '['; 
+  if (MI->getOperand(0).isReg() && MI->getOperand(0).getReg())
+    printOperand(MI, 0, O); 
+  else
+    O << "undef";
+  O << '+'; printOperand(MI, 3, O);
+  O << ']';
+  O << "+";
+  printOperand(MI, NOps-2, O);
+}
+
+
 
 //===----------------------------------------------------------------------===//
 // Target Registry Stuff