Sink feature IsThumb into MC layer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134608 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMSubtarget.cpp b/lib/Target/ARM/ARMSubtarget.cpp
index 12f12ad..1905985 100644
--- a/lib/Target/ARM/ARMSubtarget.cpp
+++ b/lib/Target/ARM/ARMSubtarget.cpp
@@ -81,14 +81,13 @@
   // Insert the architecture feature derived from the target triple into the
   // feature string. This is important for setting features that are implied
   // based on the architecture version.
-  std::string ArchFS = ARM_MC::ParseARMTriple(TT, IsThumb);
+  std::string ArchFS = ARM_MC::ParseARMTriple(TT);
   if (!FS.empty()) {
     if (!ArchFS.empty())
       ArchFS = ArchFS + "," + FS;
     else
       ArchFS = FS;
   }
-
   ParseSubtargetFeatures(CPUString, ArchFS);
 
   // Thumb2 implies at least V6T2. FIXME: Fix tests to explicitly specify a