[llvm] [OFFLOAD] Extend olMemRegister API to handle cases when a memory block may have been mapped outside of liboffload. (PR #172226)

[Kevin Sala Penades via llvm-commits]

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@@ -1043,11 +1044,40 @@ Expected<void *> PinnedAllocationMapTy::lockHostBuffer(void *HstPtr,
                              utils::getPtrDiff(HstPtr, Entry->HstPtr));
   }
 
+  if (RegisterMappedBuffer) {
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kevinsala wrote:

I'm wondering if this should be always be enabled..

https://github.com/llvm/llvm-project/pull/172226