improve tests

Author: joaosaffran

llvm/test/CodeGen/DirectX/rootsignature-validation-fail-overlap-range.ll renamed to llvm/test/CodeGen/DirectX/rootsignature-validation-fail-descriptor-table-range.ll

@@ -0,0 +1,15 @@
+; RUN: not opt -S -passes='dxil-post-optimization-validation' -mtriple=dxil-pc-shadermodel6.6-compute %s 2>&1 | FileCheck %s
+; CHECK: error: register UAV (space=0, register=2) is overlapping with register UAV (space=0, register=0), verify your root signature definition
+
+define void @CSMain() "hlsl.shader"="compute" {
+entry:
+  ret void
+}
+
+; DescriptorTable(UAV(u0, numDescriptors=unbounded), visibility = SHADER_VISIBILITY_ALL), UAV(u2, space=0, visibility=SHADER_VISIBILITY_ALL))
+!dx.rootsignatures = !{!0}
+!0 = !{ptr @CSMain, !1, i32 2}
+!1 = !{!2, !4}
+!2 = !{!"DescriptorTable", i32 2, !3}
+!3 = !{!"UAV", i32 -1, i32 0, i32 0, i32 -1, i32 4}
+!4 = !{!"RootUAV", i32 0, i32 2, i32 0, i32 4}