[clang] [llvm] Implement resource binding type prefix mismatch errors (PR #87578)

[Damyan Pepper via llvm-commits]

================
@@ -0,0 +1,73 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.3-library -x hlsl -o - -fsyntax-only %s -verify
+
+
+// expected-error at +1  {{invalid register name prefix 'b' for register resource type 'RWBuffer' (expected 'u')}}
+RWBuffer<int> a : register(b2, space1);
+
+// expected-error at +1  {{invalid register name prefix 't' for register resource type 'RWBuffer' (expected 'u')}}
+RWBuffer<int> b : register(t2, space1);
+
+// NOT YET IMPLEMENTED : {{invalid register name prefix 'u' for register type 'Texture1D' (expected 't')}}
+// NOT YET IMPLEMENTED Texture1D<float> tex : register(u3);
+
+// NOT YET IMPLEMENTED : {{invalid register name prefix 's' for register type 'Texture2D' (expected 't')}}
+// NOT YET IMPLEMENTED Texture2D<float> Texture : register(s0);
+
+// NOT YET IMPLEMENTED : {{invalid register name prefix 'u' for register type 'Texture2DMS' (expected 't')}}
+// NOT YET IMPLEMENTED Texture2DMS<float4, 4> T2DMS_t2 : register(u2)
+
+// NOT YET IMPLEMENTED : {{invalid register name prefix 't' for register type 'RWTexture3D' (expected 'u')}}
+// NOT YET IMPLEMENTED RWTexture3D<float4> RWT3D_u1 : register(t1)
+
+// NOT YET IMPLEMENTED : {{invalid register name prefix 'b' for register type 'TextureCube' (expected 't')}}
+// NOT YET IMPLEMENTED TextureCube <float>  t8 : register(b8);
+
+// NOT YET IMPLEMENTED : {{invalid register name prefix 'b' for register type 'TextureCubeArray' (expected 't')}}
+// NOT YET IMPLEMENTED TextureCubeArray TCubeArray_t2 : register(b2);
+
+// NOT YET IMPLEMENTED : {{invalid register name prefix 'b' for register type 'Texture1DArray' (expected 't')}}
+// NOT YET IMPLEMENTED Texture1DArray T1DArray_t2 : register(b2);
+
+// NOT YET IMPLEMENTED : {{invalid register name prefix 'u' for register type 'Texture2DArray' (expected 't')}}
+// NOT YET IMPLEMENTED Texture2DArray T2DArray_b2 : register(B2);
----------------
damyanp wrote:

Should probably be one of:

```suggestion
// NOT YET IMPLEMENTED : {{invalid register name prefix 'u' for register type 'Texture2DArray' (expected 't')}}
// NOT YET IMPLEMENTED Texture2DArray T2DArray_b2 : register(u2);
```

```suggestion
// NOT YET IMPLEMENTED : {{invalid register name prefix 'B' for register type 'Texture2DArray' (expected 't')}}
// NOT YET IMPLEMENTED Texture2DArray T2DArray_b2 : register(B2);

```

https://github.com/llvm/llvm-project/pull/87578