Index: lib/Target/AArch64/AArch64InstrInfo.td
===================================================================
--- lib/Target/AArch64/AArch64InstrInfo.td
+++ lib/Target/AArch64/AArch64InstrInfo.td
@@ -313,9 +313,6 @@
 //===----------------------------------------------------------------------===//
 
 // AArch64 Instruction Predicate Definitions.
-def IsDarwin  : Predicate<"Subtarget->isTargetDarwin()">;
-def IsNotDarwin: Predicate<"!Subtarget->isTargetDarwin()">;
-
 // We could compute these on a per-module basis but doing so requires accessing
 // the Function object through the <Target>Subtarget and objections were raised
 // to that (see post-commit review comments for r301750).