[llvm] [SPIR-V] [NFC] Verify cl_intel_subgroup_local_block_io extension in SPIR-V BE (PR #118796)

[Dmitry Sidorov via llvm-commits]

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+; Modified from: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/test/extensions/INTEL/SPV_INTEL_subgroups/cl_intel_sub_groups.ll
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MrSidims wrote:

Apologies, but what is a principal difference between this test and lets say https://github.com/llvm/llvm-project/blob/main/llvm/test/CodeGen/SPIRV/extensions/SPV_INTEL_subgroups/cl_intel_sub_groups.ll ? From the first glance they seem to test the same functionality, though the naming of cl_intel_sub_groups.ll is missleading.

https://github.com/llvm/llvm-project/pull/118796