define root signature versions

Author: inbelic

llvm/include/llvm/Support/DXILABI.h

@@ -99,6 +99,12 @@ enum class SamplerFeedbackType : uint32_t {
 const unsigned MinWaveSize = 4;
 const unsigned MaxWaveSize = 128;
 
+// D3D_ROOT_SIGNATURE_VERSION
+enum class RootSignatureVersion {
+  rootsig_1_0 = 0x1,
+  rootsig_1_1 = 0x2,
+};
+
 } // namespace dxil
 } // namespace llvm