[ARM] Split A/R class into separate subtarget features.

Patch by Bradley Smith.

llvm-svn: 191202
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.cpp b/llvm/lib/Target/ARM/ARMSubtarget.cpp
index 0692fbd..4589a43 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.cpp
+++ b/llvm/lib/Target/ARM/ARMSubtarget.cpp
@@ -61,6 +61,7 @@
                            const std::string &FS, const TargetOptions &Options)
   : ARMGenSubtargetInfo(TT, CPU, FS)
   , ARMProcFamily(Others)
+  , ARMProcClass(None)
   , stackAlignment(4)
   , CPUString(CPU)
   , TargetTriple(TT)
@@ -90,7 +91,6 @@
   SlowFPBrcc = false;
   InThumbMode = false;
   HasThumb2 = false;
-  IsMClass = false;
   NoARM = false;
   PostRAScheduler = false;
   IsR9Reserved = ReserveR9;