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

[Justin Bogner via cfe-commits]

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@@ -0,0 +1,74 @@
+// RUN: %clang_cc1 -triple dxil-pc-shadermodel6.3-library -x hlsl -o - -fsyntax-only %s -verify
+
+// the below will cause an llvm unreachable, because RWBuffers don't have resource attributes yet
+// NOT YET IMPLEMENTED : {{invalid register name prefix 'b' for register type 'RWBuffer' (expected 'u')}}
+// NOT YET IMPLEMENTED RWBuffer<int> a : register(b2, space1);
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bogner wrote:

This seems incorrect - RWBuffer is the one resource type that's actually available

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