Limit prefetch to only dense memory#4009
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Signed-off-by: Whitney Tsang <whitney.tsang@intel.com>
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etiotto
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Signed-off-by: Whitney Tsang <whitney.tsang@intel.com>
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This PR limits prefetch to only dense memory, to avoid polluting the cache.
Benchmark CI: https://github.com/intel/intel-xpu-backend-for-triton/actions/runs/14647344471
No performance impact to key benchmarks.
Note: this change comes partially from #3634.