[AMDGPU] Extract helper function in AsmParser. NFC

[Joe_Nash]

Summary

NFC refactor to extract useful helper function isRegOrInline.

llvm/lib/Target/AMDGPU/AsmParser/AMDGPUAsmParser.cpp

public:
   bool isRegKind() const {
     return Kind == Register;
   }
 
   bool isReg() const override {
     return isRegKind() && !hasModifiers();
   }
 
+  bool isRegOrInline(unsigned RCID, MVT type) const {
+    return isRegClass(RCID) || isInlinableImm(type);
+  }
+
   bool isRegOrImmWithInputMods(unsigned RCID, MVT type) const {
-    return isRegClass(RCID) || isInlinableImm(type) || isLiteralImm(type);
+    return isRegOrInline(RCID, type) || isLiteralImm(type);
   }
 
   bool isRegOrImmWithInt16InputMods() const {
     return isRegOrImmWithInputMods(AMDGPU::VS_32RegClassID, MVT::i16);
   }
 
   bool isRegOrImmWithInt32InputMods() const {
     return isRegOrImmWithInputMods(AMDGPU::VS_32RegClassID, MVT::i32);
bool isRegOrImm() const {
     return isReg() || isImm();
   }
 
   bool isRegClass(unsigned RCID) const;
 
   bool isInlineValue() const;
 
   bool isRegOrInlineNoMods(unsigned RCID, MVT type) const {
-    return (isRegClass(RCID) || isInlinableImm(type)) && !hasModifiers();
+    return isRegOrInline(RCID, type) && !hasModifiers();
   }
 
   bool isSCSrcB16() const {
     return isRegOrInlineNoMods(AMDGPU::SReg_32RegClassID, MVT::i16);
   }
 
   bool isSCSrcV2B16() const {
     return isSCSrcB16();