[llvm] [AMDGPU] Add buffer.fat.ptr.load.lds intrinsic wrapping raw rsrc version (PR #133015)

[Krzysztof Drewniak via llvm-commits]

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@@ -1939,6 +1939,27 @@ def int_amdgcn_s_buffer_prefetch_data : DefaultAttrsIntrinsic <
 
 } // defset AMDGPUBufferIntrinsics
 
+// A wrapper around raw_ptr_buffer_load_lds that takes the global offset
+// from the addrspace(7) pointer argument.
+def int_amdgcn_buffer_fat_ptr_load_lds : Intrinsic <
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krzysz00 wrote:

This is for `ptr addrspace(7)`, the "buffer fat pointer", which carries the offset in the pointer type 

It's a wrapper around raw_ptr_buffer_load_lds

https://github.com/llvm/llvm-project/pull/133015