mirror of
https://github.com/intel/llvm.git
synced 2026-01-14 11:57:39 +08:00
9155b318f2
This PR adds deferral of descriptor maps until they are necessary for assumed dummy argument types. The intent is to avoid a problem where a user can inadvertently map a temporary local descriptor to device without their knowledge and proceed to never unmap it. This temporary local descriptor remains lodged in OpenMP device memory and the next time another variable or descriptor residing in the same stack address is mapped we incur a runtime OpenMP map error as we try to remap the same address. This fix was discussed with the OpenMP committee and applies to OpenMP 5.2 and below, future versions of OpenMP can avoid this issue via the attach semantics added to the specification.