Description
In #9187, a number of KernelFusion test cases below are moved to xfail.
KernelFusion/abort_internalization.cpp
KernelFusion/barrier_local_internalization.cpp
KernelFusion/buffer_internalization.cpp
KernelFusion/diamond_shape.cpp
KernelFusion/internalize_array_wrapper.cpp
KernelFusion/internalize_deep.cpp
KernelFusion/internalize_multi_ptr.cpp
KernelFusion/internalize_vec.cpp
KernelFusion/internalize_vfunc.cpp
KernelFusion/jit_caching.cpp
KernelFusion/local_internalization.cpp
KernelFusion/private_internalization.cpp
KernelFusion/ranged_offset_accessor.cpp
KernelFusion/three_dimensional.cpp
KernelFusion/two_dimensional.cpp
When KernelDisjointSpecialization is added in the pipeline, it cause a number of KernelFusion test cases to fail.
For abort_internalization.cpp, it gives the error Failed to promote argument 0 of function fused_0: It is not safe to promote values appearing in a ptrtoint operation
In order for KernelFusion to be able to promote something from global memory to local or private memory, it must be sure that it is ok to do so for all uses of the global pointer. As ptrtoint followed by inttoptr would allow the pointer to "escape", i.e., it might not be able to find all its uses, it conservatively abort internalization (but not fusion) in that case.
The relevant check is here: https://github.com/intel/llvm/blob/sycl/sycl-fusion/passes/internalization/Internalization.cpp#L256