Add a Subtarget feature 'v8fp' to the ARM backend.

llvm-svn: 185073
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.h b/llvm/lib/Target/ARM/ARMSubtarget.h
index ad9c0d0..def6fbb 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.h
+++ b/llvm/lib/Target/ARM/ARMSubtarget.h
@@ -48,11 +48,12 @@
   bool HasV7Ops;
   bool HasV8Ops;
 
-  /// HasVFPv2, HasVFPv3, HasVFPv4, HasNEON - Specify what
+  /// HasVFPv2, HasVFPv3, HasVFPv4, HasV8FP, HasNEON - Specify what
   /// floating point ISAs are supported.
   bool HasVFPv2;
   bool HasVFPv3;
   bool HasVFPv4;
+  bool HasV8FP;
   bool HasNEON;
 
   /// UseNEONForSinglePrecisionFP - if the NEONFP attribute has been
@@ -249,6 +250,7 @@
   bool hasVFP2() const { return HasVFPv2; }
   bool hasVFP3() const { return HasVFPv3; }
   bool hasVFP4() const { return HasVFPv4; }
+  bool hasV8FP() const { return HasV8FP; }
   bool hasNEON() const { return HasNEON;  }
   bool useNEONForSinglePrecisionFP() const {
     return hasNEON() && UseNEONForSinglePrecisionFP; }