Set bindings for VK descriptors to match pipeline

This gets this testcase working under Vulkan.

Author: llvm-beanz

test/Basic/DescriptorSets.test

@@ -6,9 +6,9 @@
 #define REGISTER(Idx, Space) : register(Idx, Space)
 #endif
 
-RWBuffer<float4> In REGISTER(u0, space0);
-RWBuffer<float4> Out1 REGISTER(u1, space4);
-RWBuffer<float4> Out2 REGISTER(u2, space4);
+[[vk::binding(0)]] RWBuffer<float4> In REGISTER(u0, space0);
+[[vk::binding(1)]] RWBuffer<float4> Out1 REGISTER(u1, space4);
+[[vk::binding(0,1)]] RWBuffer<float4> Out2 REGISTER(u2, space4);
 
 [numthreads(1,1,1)]
 void main(uint GI : SV_GroupIndex) {
@@ -45,12 +45,12 @@ DescriptorSets:
 ...
 #--- end
 
+# UNSUPPORTED: Clang
 # RUN: split-file %s %t
 # RUN: %if DirectX %{ dxc -T cs_6_0 -Fo %t.dxil %t/DescriptorSets.hlsl %}
 # RUN: %if DirectX %{ %offloader %t/DescriptorSets.yaml %t.dxil | FileCheck %s %}
 # RUN: %if Vulkan %{ dxc -T cs_6_0 -spirv -fspv-target-env=vulkan1.1 -Fo %t.spv %t/DescriptorSets.hlsl %}
 # RUN: %if Vulkan %{ %offloader %t/DescriptorSets.yaml %t.spv | FileCheck %s %}
-# XFAIL: Vulkan-NV
 
 # RUN: %if Metal %{ dxc -T cs_6_0 -Fo %t.dxil %t/DescriptorSets.hlsl %}
 # RUN: %if Metal %{ metal-shaderconverter %t.dxil -o=%t.metallib %}