[llvm-branch-commits] [Flang][OpenMP][MLIR] Extend derived (record) type map support in Flang OpenMP by adding some initial support for explicit member mapping (PR #81511)

[Kareem Ergawy via llvm-branch-commits]

================
@@ -1906,8 +2036,22 @@ bool ClauseProcessor::processMap(
 
         for (const Fortran::parser::OmpObject &ompObject :
              std::get<Fortran::parser::OmpObjectList>(mapClause->v.t).v) {
+          llvm::omp::OpenMPOffloadMappingFlags objectsMapTypeBits = 
mapTypeBits;
+          checkAndApplyDeclTargetMapFlags(converter, objectsMapTypeBits,
+                                          getOmpObjectSymbol(ompObject));
+
           llvm::SmallVector<mlir::Value> bounds;
           std::stringstream asFortran;
+          const Fortran::semantics::Symbol *parentSym = nullptr;
+
+          if (getOmpObjectSymbol(ompObject)->owner().IsDerivedType()) {
+            memberPlacementIndices.push_back(
+                firOpBuilder.getI64IntegerAttr(findComponenetMemberPlacement(
+                    getOmpObjectSymbol(ompObject)->owner().symbol(),
----------------
ergawy wrote:

Maybe a dummy question, but in which cases would 
`getOmpObjectSymbol(ompObject)->owner().symbol()` and 
`getOmpObjParentSymbol(ompObject)` would return different symbols? Can you give 
me an example for such a case?

https://github.com/llvm/llvm-project/pull/81511
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