r356759 - [OPENMP]Add missing comment, NFC.

[Alexey Bataev via cfe-commits]

Author: abataev
Date: Fri Mar 22 08:32:02 2019
New Revision: 356759

URL: http://llvm.org/viewvc/llvm-project?rev=356759&view=rev
Log:
[OPENMP]Add missing comment, NFC.

Modified:
    cfe/trunk/lib/Sema/SemaOpenMP.cpp

Modified: cfe/trunk/lib/Sema/SemaOpenMP.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaOpenMP.cpp?rev=356759&r1=356758&r2=356759&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaOpenMP.cpp (original)
+++ cfe/trunk/lib/Sema/SemaOpenMP.cpp Fri Mar 22 08:32:02 2019
@@ -2254,6 +2254,10 @@ Sema::DeclGroupPtrTy Sema::ActOnOpenMPAl
   assert(Clauses.size() <= 1 && "Expected at most one clause.");
   Expr *Allocator = nullptr;
   if (Clauses.empty()) {
+    // OpenMP 5.0, 2.11.3 allocate Directive, Restrictions.
+    // allocate directives that appear in a target region must specify an
+    // allocator clause unless a requires directive with the dynamic_allocators
+    // clause is present in the same compilation unit.
     if (LangOpts.OpenMPIsDevice &&
         !DSAStack->hasRequiresDeclWithClause<OMPDynamicAllocatorsClause>())
       targetDiag(Loc, diag::err_expected_allocator_clause);