No debuginfo generated for buffer references about slang HOT 4 OPEN

Currently pointers are emitted as normal 64bit integers in our debug info because we weren't sure if the downstream tools supported OpDebugTypePointer. We can added this if required.

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Also our GLSL support is experimental and is provided only to help developers transition from existing/legacy GLSL codebase. The GLSL support isn't meant to be complete or kept up-to-date with the GLSL spec.

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Can I ask a simple repro case for the issue?

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struct Data
{
     float4x3 mat;
     float4 vec;
     float3 arr[5];
     Data* next;
}

ConstantBuffer<Data> cData;
RWStructuredBuffer<float> result;

[numthread(1,1,1)]
void main()
{
      result[0] = cData.next->arr[2].x + cData.next->vec.y;
}

Run with slangc test.slang -o test.spv -g2.
We should be producing an OpDebugTypePointer member in the OpDebugTypeStruct for Data.

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