[SYCL][NativeCPU] Limit generic ABI to builtins. #19564
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In intel#17408, NativeCPU became a target in order to be able to pick the ABI for its own libclc functions consistently, without having targets affect this. This was, and is, required to be able to use libclc independent of target and target options. However, it breaks some calls into libc. Therefore, this PR allows the calling convention to be explicitly specified, ensures it is specified for any libclc functions, and ensures it is not specified for any libc functions. Fixes the SYCL-E2E acos, cmath, and exp-std-complex tests.
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This needs compiler tests, |
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Just a heads up that after today I will be on holiday. I am not expecting reviews to be done today, that is fine, but it will be a little while before I'll be able to respond to any issues or concerns. |
aelovikov-intel
approved these changes
Jul 31, 2025
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| // Note: These signatures for parallel_for_work_item are intentionally | ||
| // non-conforming. The spec says this should take const WorkItemFunctionT &, | ||
| // but we take it by value, and rely on passing by value being done as passing | ||
| // a copy by reference (ptr byval) to ensure that the special handling in | ||
| // SYCLLowerWGScopePass to mutate the passed functor object works. |
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Hierarchical parallelism is deprecated in SYCL 2020, so nobody cares, I guess.
npmiller
approved these changes
Aug 4, 2025
MrSidims
approved these changes
Aug 14, 2025
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In #17408, NativeCPU became a target in order to be able to pick the ABI for its own libclc functions consistently, without having targets affect this. This was, and is, required to be able to use libclc independent of target and target options. However, it breaks some calls into libc. Therefore, this PR allows the calling convention to be explicitly specified, ensures it is specified for any libclc functions, and ensures it is not specified for any libc functions.
Fixes the SYCL-E2E acos, cmath, and exp-std-complex tests.