ARM: Add subtarget feature for CRC

Adds a subtarget feature for the CRC instructions (optional in v8-A) to the ARM (32-bit) backend.

Differential Revision: http://llvm-reviews.chandlerc.com/D2036

llvm-svn: 193599

1 files changed, 4 insertions, 0 deletions

diff --git a/llvm/lib/Target/ARM/ARMSubtarget.h b/llvm/lib/Target/ARM/ARMSubtarget.h
index b9a55fb6914..41aa2adbbce 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.h
+++ b/llvm/lib/Target/ARM/ARMSubtarget.h
@@ -165,6 +165,9 @@ protected:
   /// HasCrypto - if true, processor supports Cryptography extensions
   bool HasCrypto;
 
+  /// HasCRC - if true, processor supports CRC instructions
+  bool HasCRC;
+
   /// AllowsUnalignedMem - If true, the subtarget allows unaligned memory
   /// accesses for some types.  For details, see
   /// ARMTargetLowering::allowsUnalignedMemoryAccesses().
@@ -256,6 +259,7 @@ public:
   bool hasFPARMv8() const { return HasFPARMv8; }
   bool hasNEON() const { return HasNEON;  }
   bool hasCrypto() const { return HasCrypto; }
+  bool hasCRC() const { return HasCRC; }
   bool useNEONForSinglePrecisionFP() const {
     return hasNEON() && UseNEONForSinglePrecisionFP; }