review: use empty instead of 0 < size check

Author: inbelic

llvm/lib/Frontend/HLSL/HLSLRootSignature.cpp

@@ -29,7 +29,7 @@ static raw_ostream &printFlags(raw_ostream &OS, const T Value,
         OS << " | ";
 
       StringRef MaybeFlag = enumToStringRef(T(Bit), Flags);
-      if (0 < MaybeFlag.size())
+      if (!MaybeFlag.empty())
         OS << MaybeFlag;
       else
         OS << "invalid: " << Bit;

llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp

@@ -129,7 +129,7 @@ MDNode *MetadataBuilder::BuildRootDescriptor(const RootDescriptor &Descriptor) {
   StringRef ResName =
       enumToStringRef(dxil::ResourceClass(to_underlying(Descriptor.Type)),
                       ArrayRef(ResourceClassNames));
-  assert(0 < ResName.size() && "Provided an invalid Resource Class");
+  assert(!ResName.empty() && "Provided an invalid Resource Class");
   SmallString<7> Name({"Root", ResName});
   Metadata *Operands[] = {
       MDString::get(Ctx, Name),
@@ -171,7 +171,7 @@ MDNode *MetadataBuilder::BuildDescriptorTableClause(
   StringRef ResName =
       enumToStringRef(dxil::ResourceClass(to_underlying(Clause.Type)),
                       ArrayRef(ResourceClassNames));
-  assert(0 < ResName.size() && "Provided an invalid Resource Class");
+  assert(!ResName.empty() && "Provided an invalid Resource Class");
   Metadata *Operands[] = {
       MDString::get(Ctx, ResName),
       ConstantAsMetadata::get(Builder.getInt32(Clause.NumDescriptors)),