[flang-commits] [flang] [mlir] [Flang][OpenMP] Privatize descriptors for assumed shape array maps for performance increase (PR #212336)

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@@ -349,8 +350,13 @@ class MapInfoFinalizationPass
 
     canDescBeDeferred = canDeferDescriptorMapping(descriptor);
 
-    if (!mlir::isa<fir::BaseBoxType>(descriptor.getType()) &&
-        !fir::factory::isOptionalArgument(descriptor.getDefiningOp()))
+    // A restricted subset of canDeferDescriptorMapping for the moment
+    // can extend to encompass more as we find acceptable cases.
+    canOptimizeDescViaPrivatization = isDummyArgument(descriptor) &&
+                                      fir::isAssumedShape(descriptor.getType());
+
+    if ((!mlir::isa<fir::BaseBoxType>(descriptor.getType()) &&
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agozillon wrote:

nice catch! 

https://github.com/llvm/llvm-project/pull/212336