Index: lib/Target/Mips/AsmParser/MipsAsmParser.cpp
===================================================================
--- lib/Target/Mips/AsmParser/MipsAsmParser.cpp
+++ lib/Target/Mips/AsmParser/MipsAsmParser.cpp
@@ -53,7 +53,13 @@
   }
 
   unsigned getATRegNum() const { return ATReg; }
-  bool setATReg(unsigned Reg);
+  bool setATReg(unsigned Reg) {
+    if (Reg > 31)
+      return false;
+
+    ATReg = Reg;
+    return true;
+  }
 
   bool isReorder() const { return Reorder; }
   void setReorder() { Reorder = true; }
@@ -2376,14 +2382,6 @@
   return CC;
 }
 
-bool MipsAssemblerOptions::setATReg(unsigned Reg) {
-  if (Reg > 31)
-    return false;
-
-  ATReg = Reg;
-  return true;
-}
-
 int MipsAsmParser::getATReg(SMLoc Loc) {
   int AT = AssemblerOptions.back()->getATRegNum();
   if (AT == 0)