[clang] [openmp] [Clang][OpenMP] Fix ordering of processing of map clauses when mapping a struct. (PR #72410)

[Alexey Bataev via cfe-commits]

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@@ -7731,10 +7731,30 @@ class MappableExprsHandler {
               IsImplicit, Mapper, VarRef, ForDeviceAddr);
         };
 
+    // Sort all map clauses and make sure all the maps containing array
+    // sections are processed last.
+    llvm::SmallVector<const OMPMapClause *, 16> SortedMapClauses;
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alexey-bataev wrote:

But that what this code already does, it (implicitly) "reorders" the clauses by extending the mapped region automatically. Explicit reordering should not be required.

https://github.com/llvm/llvm-project/pull/72410