diff --git a/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp b/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
index a9da64c..34c58b2 100644
--- a/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
+++ b/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -279,6 +279,21 @@
       if (MI->getOperand(OpNo).isImm())
         O << "i";
       return false;
+    case 'x':
+      if(!MI->getOperand(OpNo).isReg())
+        return true;
+      // This operand uses VSX numbering.
+      // If the operand is a VMX register, convert it to a VSX register.
+      unsigned Reg = MI->getOperand(OpNo).getReg();
+      if (PPCInstrInfo::isVRRegister(Reg))
+        Reg = PPC::VSX32 + (Reg - PPC::V0);
+      else if (PPCInstrInfo::isVFRegister(Reg))
+        Reg = PPC::VSX32 + (Reg - PPC::VF0);
+      const char *RegName;
+      RegName = PPCInstPrinter::getRegisterName(Reg);
+      RegName = stripRegisterPrefix(RegName);
+      O << RegName;
+      return false;
     }
   }