[ARM] Change the type of CC code in splitMnemonic.

This changes the type from `unsigned` to `ARMCC::CondCodes` for clarity and
correctness.

Author: AlfieRichardsArm

llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp

@@ -506,9 +506,10 @@ class ARMAsmParser : public MCTargetAsmParser {
 
   bool isMnemonicVPTPredicable(StringRef Mnemonic, StringRef ExtraToken);
   StringRef splitMnemonic(StringRef Mnemonic, StringRef ExtraToken,
-                          unsigned &PredicationCode,
-                          unsigned &VPTPredicationCode, bool &CarrySetting,
-                          unsigned &ProcessorIMod, StringRef &ITMask);
+                          ARMCC::CondCodes &PredicationCode,
+                          ARMVCC::VPTCodes &VPTPredicationCode,
+                          bool &CarrySetting, unsigned &ProcessorIMod,
+                          StringRef &ITMask);
   void getMnemonicAcceptInfo(StringRef Mnemonic, StringRef ExtraToken,
                              StringRef FullInst, bool &CanAcceptCarrySet,
                              bool &CanAcceptPredicationCode,
@@ -6283,10 +6284,9 @@ bool ARMAsmParser::parsePrefix(ARMMCExpr::VariantKind &RefKind) {
 //
 // FIXME: Would be nice to autogen this.
 // FIXME: This is a bit of a maze of special cases.
-StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic,
-                                      StringRef ExtraToken,
-                                      unsigned &PredicationCode,
-                                      unsigned &VPTPredicationCode,
+StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic, StringRef ExtraToken,
+                                      ARMCC::CondCodes &PredicationCode,
+                                      ARMVCC::VPTCodes &VPTPredicationCode,
                                       bool &CarrySetting,
                                       unsigned &ProcessorIMod,
                                       StringRef &ITMask) {
@@ -6340,7 +6340,7 @@ StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic,
     unsigned CC = ARMCondCodeFromString(Mnemonic.substr(Mnemonic.size()-2));
     if (CC != ~0U) {
       Mnemonic = Mnemonic.slice(0, Mnemonic.size() - 2);
-      PredicationCode = CC;
+      PredicationCode = (ARMCC::CondCodes)CC;
     }
   }
 
@@ -6387,7 +6387,7 @@ StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic,
     unsigned CC = ARMVectorCondCodeFromString(Mnemonic.substr(Mnemonic.size()-1));
     if (CC != ~0U) {
       Mnemonic = Mnemonic.slice(0, Mnemonic.size()-1);
-      VPTPredicationCode = CC;
+      VPTPredicationCode = (ARMVCC::VPTCodes)CC;
     }
     return Mnemonic;
   }