Revert "[SYCL] Fix performance regression in parallel_for with using id class (#5385)" #6013
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…id class (intel#5385)" This reverts commit a5760aa. Test is kept to check that id is converted from item within kernel.
steffenlarsen
approved these changes
Apr 14, 2022
cperkinsintel
approved these changes
Apr 14, 2022
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@steffenlarsen @cperkinsintel could you please merge this PR? thanks |
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This reverts commit a5760aa.
Test is kept to check that id is converted from item within kernel.
#5385 intends to fix a perf regression of a workload on cpu device. An alternative fix for the regression is to fix two pre- and post-vectorizer passes which have not handled llvm.assume properly, which I think is a better approach.
#5385 causes regression on another vectorizer workload due to missing fsycl-id-queries-fit-in-int support for sycl::id that is used for querying global_id within a kernel. fsycl-id-queries-fit-in-int support is very important for vectorizer performance, so it is necessary to have the support for sycl::id.