Use the appropriate return type for the compact unwind encoding.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190551 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/MC/MCAsmBackend.h

@@ -162,7 +162,7 @@ public:
   virtual void handleAssemblerFlag(MCAssemblerFlag Flag) {}
 
   /// \brief Generate the compact unwind encoding for the CFI instructions.
-  virtual unsigned
+  virtual uint32_t
   generateCompactUnwindEncoding(ArrayRef<MCCFIInstruction>) const {
     return 0;
   }

lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp

@@ -722,7 +722,7 @@ public:
   }
 
   /// \brief Generate the compact unwind encoding for the CFI instructions.
-  virtual unsigned
+  virtual uint32_t
   generateCompactUnwindEncoding(ArrayRef<MCCFIInstruction> Instrs) const {
     return SupportsCU ? generateCompactUnwindEncodingImpl(Instrs) : 0;
   }
@@ -777,7 +777,7 @@ public:
   }
 
   /// \brief Generate the compact unwind encoding for the CFI instructions.
-  virtual unsigned
+  virtual uint32_t
   generateCompactUnwindEncoding(ArrayRef<MCCFIInstruction> Instrs) const {
     return SupportsCU ? generateCompactUnwindEncodingImpl(Instrs) : 0;
   }