self-review: output unbounded instead of UINT_MAX for numDescriptors

Author: inbelic

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

@@ -41,7 +41,7 @@
 // CHECK-SAME:   t1, numDescriptors = 8, space = 0, offset = DescriptorTableOffsetAppend, flags = DescriptorsVolatile
 // CHECK-SAME: ),
 // CHECK-SAME: UAV(
-// CHECK-SAME:   u1, numDescriptors = 4294967295, space = 0, offset = DescriptorTableOffsetAppend, flags = DescriptorsVolatile
+// CHECK-SAME:   u1, numDescriptors = unbounded, space = 0, offset = DescriptorTableOffsetAppend, flags = DescriptorsVolatile
 // CHECK-SAME: ),
 // CHECK-SAME: DescriptorTable(
 // CHECK-SAME:   numClauses = 3, visibility = All

llvm/lib/Frontend/HLSL/HLSLRootSignatureUtils.cpp

@@ -288,8 +288,12 @@ raw_ostream &operator<<(raw_ostream &OS, const DescriptorTable &Table) {
 
 raw_ostream &operator<<(raw_ostream &OS, const DescriptorTableClause &Clause) {
   OS << Clause.Type << "(" << Clause.Reg
-     << ", numDescriptors = " << Clause.NumDescriptors
-     << ", space = " << Clause.Space << ", offset = ";
+     << ", numDescriptors = ";
+  if (Clause.NumDescriptors == NumDescriptorsUnbounded)
+     OS << "unbounded";
+  else
+     OS << Clause.NumDescriptors;
+  OS << ", space = " << Clause.Space << ", offset = ";
   if (Clause.Offset == DescriptorTableOffsetAppend)
     OS << "DescriptorTableOffsetAppend";
   else

llvm/unittests/Frontend/HLSLRootSignatureDumpTest.cpp

@@ -34,7 +34,7 @@ TEST(HLSLRootSignatureTest, DescriptorSRVClauseDump) {
   DescriptorTableClause Clause;
   Clause.Type = ClauseType::SRV;
   Clause.Reg = {RegisterType::TReg, 0};
-  Clause.NumDescriptors = 2;
+  Clause.NumDescriptors = NumDescriptorsUnbounded;
   Clause.Space = 42;
   Clause.Offset = 3;
   Clause.Flags = DescriptorRangeFlags::None;
@@ -45,7 +45,7 @@ TEST(HLSLRootSignatureTest, DescriptorSRVClauseDump) {
   OS.flush();
 
   std::string Expected =
-      "SRV(t0, numDescriptors = 2, space = 42, offset = 3, flags = None)";
+      "SRV(t0, numDescriptors = unbounded, space = 42, offset = 3, flags = None)";
   EXPECT_EQ(Out, Expected);
 }