Refactor how default value for vectorization switch is selected in intel/llvm#2402

[AlexeySachkov]

There is a comment from @bader:

@AlexeySachkov, I would prefer if we disable vectorizers only for SPIR target as I noted here. So if Xilinx FPGA uses different triple, it can still control the default behavior. NOTE: NVPTX, doesn't completely disables the vectorizer - https://github.com/intel/llvm/blob/sycl/llvm/lib/Target/NVPTX/NVPTXTargetTransformInfo.h#L65. It's not clear what is the impact on performance for NVPTX.

Which needs to be applied

[KornevNikita]

Hi! There have been no updates for at least the last 60 days, though the ticket has assignee(s).

@AlexeySachkov, could I ask you to take one of the following actions? :)

• Please provide an update if you have any (or just a small comment if you don't have any yet).
• OR mark this issue with the 'confirmed' label if you have confirmed the problem/request and our team should work on it.
• OR close the issue if it has been resolved.
• OR take any other suitable action.

Thanks!

[github-actions[bot]]

Hi! There have been no updates for at least the last 60 days, though the issue has assignee(s).

@AlexeySachkov, could you please take one of the following actions:

• provide an update if you have any
• unassign yourself if you're not looking / going to look into this issue
• mark this issue with the 'confirmed' label if you have confirmed the problem/request and our team should work on it
• close the issue if it has been resolved
• take any other suitable action.

Thanks!

[github-actions[bot]]

Hi! There have been no updates for at least the last 60 days, though the issue has assignee(s).

@AlexeySachkov, could you please take one of the following actions:

• provide an update if you have any
• unassign yourself if you're not looking / going to look into this issue
• mark this issue with the 'confirmed' label if you have confirmed the problem/request and our team should work on it
• close the issue if it has been resolved
• take any other suitable action.

Thanks!

[github-actions[bot]]

Hi! There have been no updates for at least the last 60 days, though the issue has assignee(s).

@AlexeySachkov, could you please take one of the following actions:

• provide an update if you have any
• unassign yourself if you're not looking / going to look into this issue
• mark this issue with the 'confirmed' label if you have confirmed the problem/request and our team should work on it
• close the issue if it has been resolved
• take any other suitable action.

Thanks!