[Offload] Update LIBOMPTARGET_INFO text for attach map-type. (llvm#155509)

Also adds two debug dumps regarding pointer-attachment.

Author: abhinavgaba

offload/libomptarget/omptarget.cpp

@@ -403,6 +403,12 @@ static int performPointerAttachment(DeviceTy &Device, AsyncInfoTy &AsyncInfo,
                    reinterpret_cast<uint64_t>(HstPteeBase);
   void *TgtPteeBase = reinterpret_cast<void *>(
       reinterpret_cast<uint64_t>(TgtPteeBegin) - Delta);
+  DP("HstPteeBase: " DPxMOD ", HstPteeBegin: " DPxMOD
+     ", Delta (HstPteeBegin - HstPteeBase): %" PRIu64 ".\n",
+     DPxPTR(HstPteeBase), DPxPTR(HstPteeBegin), Delta);
+  DP("TgtPteeBase (TgtPteeBegin - Delta): " DPxMOD ", TgtPteeBegin : " DPxMOD
+     "\n",
+     DPxPTR(TgtPteeBase), DPxPTR(TgtPteeBegin));
 
   // Add shadow pointer tracking
   // TODO: Support shadow-tracking of larger than VoidPtrSize pointers,

offload/libomptarget/private.h

@@ -55,7 +55,14 @@ printKernelArguments(const ident_t *Loc, const int64_t DeviceId,
     const char *Type = nullptr;
     const char *Implicit =
         (ArgTypes[I] & OMP_TGT_MAPTYPE_IMPLICIT) ? "(implicit)" : "";
-    if (ArgTypes[I] & OMP_TGT_MAPTYPE_TO && ArgTypes[I] & OMP_TGT_MAPTYPE_FROM)
+
+    if (ArgTypes[I] & OMP_TGT_MAPTYPE_ATTACH &&
+        ArgTypes[I] & OMP_TGT_MAPTYPE_ALWAYS)
+      Type = "attach:always";
+    else if (ArgTypes[I] & OMP_TGT_MAPTYPE_ATTACH)
+      Type = "attach";
+    else if (ArgTypes[I] & OMP_TGT_MAPTYPE_TO &&
+             ArgTypes[I] & OMP_TGT_MAPTYPE_FROM)
       Type = "tofrom";
     else if (ArgTypes[I] & OMP_TGT_MAPTYPE_TO)
       Type = "to";