ABataev added inline comments.

================
Comment at: lib/Sema/SemaOpenMP.cpp:9779-9780
@@ +9778,4 @@
+    if (DKind == OMPD_target) {
+      if(VD && DSAStack->isPrivate(VD)) {
+        auto DVar = DSAStack->getTopDSA(VD, false);
+        Diag(ELoc, diag::err_omp_variable_in_map_and_dsa)
----------------
You still use `getTopDSA()` here, maybe it is better to not call `isPrivate()` 
and use direct checks like this:
```
auto DVar = DSAStack->getTopDSA(D, false);
if (VD && isOpenMPPrivate(DVar.CKind))
 .....
```
Besides, I don't think we need `isPrivate()` and `isFirstPrivate()` member 
functions.

================
Comment at: lib/Sema/SemaOpenMP.cpp:9782-9783
@@ +9781,4 @@
+        Diag(ELoc, diag::err_omp_variable_in_map_and_dsa)
+            << getOpenMPClauseName(DSAStack->isFirstPrivate(VD) ?
+                                   OMPC_firstprivate : OMPC_private)
+            << getOpenMPDirectiveName(DSAStack->getCurrentDirective());
----------------
Again, `DSAStack->isFirstPrivate(VD) ? OMPC_firstprivate : OMPC_private` can be 
replaced by simple code like this one `DVar.CKind`
Also, additional checks must be added to private clauses, which does not allow 
to privatize variables, that already are mapped. Maybe you need to use new DSA 
kind `OMPC_map` and mark all mapped variables as one having `OMPC_map` 
data-sharing attribute?


Repository:
  rL LLVM

http://reviews.llvm.org/D18203



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