Rename methods for the sake of consistency.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73428 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMSubtarget.h b/lib/Target/ARM/ARMSubtarget.h
index 0704055..6e750d0 100644
--- a/lib/Target/ARM/ARMSubtarget.h
+++ b/lib/Target/ARM/ARMSubtarget.h
@@ -106,8 +106,8 @@
   bool isAAPCS_ABI() const { return TargetABI == ARM_ABI_AAPCS; }
 
   bool isThumb() const { return IsThumb; }
-  bool isThumb1() const { return IsThumb && (ThumbMode == Thumb1); }
-  bool isThumb2() const { return IsThumb && (ThumbMode >= Thumb2); }
+  bool isThumb1Only() const { return IsThumb && (ThumbMode == Thumb1); }
+  bool hasThumb2() const { return IsThumb && (ThumbMode >= Thumb2); }
 
   bool useThumbBacktraces() const { return UseThumbBacktraces; }
   bool isR9Reserved() const { return IsR9Reserved; }