[SYCL] Allow work group scratch memory to be used with free function kernels #19978
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…kernels (intel#19837) When a kernel uses implicit local memory such as by way of the `get_work_group_scratch_memory` function, the library is supposed to mark the kernel with the appropriate attribute `WORK_GROUP_STATIC_ATTR` to get things to work at runtime. This is done through the properties passed to the kernel invocation call. For free function kernels however, the infrastructure is not there to do this marking process and usage of the above mentioned function typically results in a UR error. This PR makes some changes at the middle-end level to traverse the call graph wherever the compiler built-in functions `__sycl_allocateLocalMemory` and `__sycl_dynamicLocalMemoryPlaceholder` are used and mark each of the kernels found during this traversal , including free function kernels, with the `WORK_GROUP_STATIC_ATTR` attribute if not already present.
AlexeySachkov
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AlexeySachkov
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WindowsCILock
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AlexeySachkov
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WindowsCILock
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lbushi25
approved these changes
Sep 4, 2025
That is a known |
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This is a cherry-pick of #19837
When a kernel uses implicit local memory such as by way of the
get_work_group_scratch_memoryfunction, the library is supposed to mark the kernel with the appropriate attributeWORK_GROUP_STATIC_ATTRto get things to work at runtime. This is done through the properties passed to the kernel invocation call. For free function kernels however, the infrastructure is not there to do this marking process and usage of the above mentioned function typically results in a UR error.This PR makes some changes at the middle-end level to traverse the call graph wherever the compiler built-in functions
__sycl_allocateLocalMemoryand__sycl_dynamicLocalMemoryPlaceholderare used and mark each of the kernels found during this traversal , including free function kernels, with theWORK_GROUP_STATIC_ATTRattribute if not already present.