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

[Pranav Bhandarkar via flang-commits]

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@@ -752,10 +758,20 @@ class MapInfoFinalizationPass
   /// issues.
   mlir::omp::ClauseMapFlags
   getDescriptorMapType(mlir::omp::ClauseMapFlags mapTypeFlag,
-                       mlir::Operation *target) {
+                       mlir::Operation *target, bool privatizeDescriptor) {
     using MapFlags = mlir::omp::ClauseMapFlags;
     MapFlags flags = MapFlags::none;
 
+    // Special runtime case for descriptor privatization requires the
+    // following map types in synergy:
+    //
+    //  PRIVATE | ATTACH | TARGET_PARAM
+    //
+    if (privatizeDescriptor) {
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bhandarkar-pranav wrote:

Should  `MapFlags::always` always accompany `MapFlags::Private`?

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