diff --git a/lib/Target/Target.td b/lib/Target/Target.td
index 75d3d7b4f82..bb87265be3b 100644
--- a/lib/Target/Target.td
+++ b/lib/Target/Target.td
@@ -173,6 +173,13 @@ class Instruction {
   InstrItinClass Itinerary = NoItinerary;// Execution steps used for scheduling.
 }
 
+/// Imp - Helper class for specifying the implicit uses/defs set for an
+/// instruction.
+class Imp<list<Register> uses, list<Register> defs> {
+  list<Register> Uses = uses;
+  list<Register> Defs = defs;
+}
+
 /// Predicates - These are extra conditionals which are turned into instruction
 /// selector matching code. Currently each predicate is just a string.
 class Predicate<string cond> {
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index f7a5af20f99..ac3a985344f 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -228,11 +228,6 @@ class X86Inst<bits<8> opcod, Format f, ImmType i, dag ops, string AsmStr>
   bits<3> FPFormBits = 0;
 }
 
-class Imp<list<Register> uses, list<Register> defs> {
-  list<Register> Uses = uses;
-  list<Register> Defs = defs;
-}
-
 
 // Prefix byte classes which are used to indicate to the ad-hoc machine code
 // emitter that various prefix bytes are required.