llvm

e928aaed - [L0] Use immediate command lists for external semaphore wait/signal (#21930)

[L0] Use immediate command lists for external semaphore wait/signal (#21930) The L0 spec requires zeCommandListAppendWaitExternalSemaphoreExt and zeCommandListAppendSignalExternalSemaphoreExt to be called on immediate command lists. On Gen12, queues default to regular (non-immediate) command lists, causing these calls to fail with ZE_RESULT_ERROR_INVALID_ARGUMENT. Fix by obtaining an immediate command list via getImmCmdList() when the queue is not already using immediate command lists, ensuring external semaphore operations work on all platforms including Gen12.