[HLSL][RootSignature] Implement serialization of StaicSampler

- adds the easy cases

Author: inbelic

llvm/include/llvm/Frontend/HLSL/HLSLRootSignatureUtils.h

@@ -35,6 +35,9 @@ LLVM_ABI raw_ostream &operator<<(raw_ostream &OS,
 LLVM_ABI raw_ostream &operator<<(raw_ostream &OS,
                                  const RootDescriptor &Descriptor);
 
+LLVM_ABI raw_ostream &operator<<(raw_ostream &OS,
+                                 const StaticSampler &StaticSampler);
+
 LLVM_ABI raw_ostream &operator<<(raw_ostream &OS,
                                  const DescriptorTableClause &Clause);
 

llvm/lib/Frontend/HLSL/HLSLRootSignatureUtils.cpp

@@ -251,6 +251,18 @@ raw_ostream &operator<<(raw_ostream &OS, const RootDescriptor &Descriptor) {
   return OS;
 }
 
+raw_ostream &operator<<(raw_ostream &OS, const StaticSampler &Sampler) {
+  OS << "StaticSampler(" << Sampler.Reg
+     << ", mipLODBias = " << Sampler.MipLODBias
+     << ", maxAnisotropy = " << Sampler.MaxAnisotropy
+     << ", minLOD = " << Sampler.MinLOD
+     << ", maxLOD = " << Sampler.MaxLOD
+     << ", space = " << Sampler.Space
+     << ", visibility = " << Sampler.Visibility
+     << ")";
+  return OS;
+}
+
 raw_ostream &operator<<(raw_ostream &OS, const DescriptorTable &Table) {
   OS << "DescriptorTable(numClauses = " << Table.NumClauses
      << ", visibility = " << Table.Visibility << ")";