forked from OSchip/llvm-project
fc2629a65a
Rationale: OpenCL kernels are called via an explicit runtime API with arguments set with clSetKernelArg(), not as normal sub-functions. Return SPIR_KERNEL by default as the kernel calling convention to ensure the fingerprint is fixed such way that each OpenCL argument gets one matching argument in the produced kernel function argument list to enable feasible implementation of clSetKernelArg() with aggregates etc. In case we would use the default C calling conv here, clSetKernelArg() might break depending on the target-specific conventions; different targets might split structs passed as values to multiple function arguments etc. https://reviews.llvm.org/D33639 llvm-svn: 304389 |
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