================
@@ -44,7 +44,7 @@ void foo2() {
// expected-warning@+1 {{'register' attribute only applies to
cbuffer/tbuffer and external global variables}}
extern RWBuffer<float> U2 : register(u5);
}
-// FIXME: expect-error once fix
https://github.com/llvm/llvm-project/issues/57886.
+// expected-error@+1 {{invalid register name prefix 'u' for 'float' (expected
't')}}
----------------
bob80905 wrote:
I don't have a prior example to base this off of at hand, but I think I saw
some hlsl with a builtin type bound to a register and the valid prefix was 't'.
To answer your question, the assignment is represented as a VarDecl, so the
compiler assumes this resource is a Sampler, UAV, or SRV. Then the resource
type is analyzed to see if it's a builtin (float happens to be a builtin).
Then we check the binding prefix to see if it's 't', and if not, emit an error.
float is a builtin type, and the prefix isn't t, so that's why this test case
expects 't'.
What prefix should it expect, if any?
https://github.com/llvm/llvm-project/pull/87578
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