update serialization of root signature to output version

Author: inbelic

clang/lib/AST/TextNodeDumper.cpp

@@ -3041,6 +3041,16 @@ void TextNodeDumper::VisitHLSLBufferDecl(const HLSLBufferDecl *D) {
 void TextNodeDumper::VisitHLSLRootSignatureDecl(
     const HLSLRootSignatureDecl *D) {
   dumpName(D);
+  OS << " version: ";
+  switch (D->getVersion()) {
+  case llvm::dxil::RootSignatureVersion::rootsig_1_0:
+    OS << "1.0";
+    break;
+  case llvm::dxil::RootSignatureVersion::rootsig_1_1:
+    OS << "1.1";
+    break;
+  }
+  OS << ", ";
   llvm::hlsl::rootsig::dumpRootElements(OS, D->getRootElements());
 }
 

clang/test/AST/HLSL/RootSignatures-AST.hlsl

@@ -1,5 +1,11 @@
 // RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -ast-dump \
 // RUN:  -disable-llvm-passes -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -ast-dump \
+// RUN:  -hlsl-rootsig-ver rootsig_1_0 \
+// RUN:  -disable-llvm-passes -o - %s | FileCheck %s --check-prefix=CHECK-V1_0
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.0-library -ast-dump \
+// RUN:  -hlsl-rootsig-ver rootsig_1_1 \
+// RUN:  -disable-llvm-passes -o - %s | FileCheck %s --check-prefix=CHECK-V1_1
 
 // This test ensures that the sample root signature is parsed without error and
 // the Attr AST Node is created succesfully. If an invalid root signature was
@@ -16,6 +22,8 @@
   "DescriptorTable(Sampler(s0, numDescriptors = 4, space = 1))"
 
 // CHECK: -HLSLRootSignatureDecl 0x{{.*}} {{.*}} implicit [[SAMPLE_RS_DECL:__hlsl_rootsig_decl_\d*]]
+// CHECK-V1_0: version: 1.0,
+// CHECK-V1_1: version: 1.1,
 // CHECK-SAME: RootElements{
 // CHECK-SAME:   CBV(b1, numDescriptors = 1, space = 0,
 // CHECK-SAME:     offset = DescriptorTableOffsetAppend, flags = DataStaticWhileSetAtExecute),