[flang] [llvm] [flang] Add special genre for allocatable and pointer device component (PR #157731)

[Peter Klausler via llvm-commits]

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@@ -171,20 +171,21 @@ class Descriptor {
       void *p = nullptr, int rank = maxRank,
       const SubscriptValue *extent = nullptr,
       ISO::CFI_attribute_t attribute = CFI_attribute_other,
-      bool addendum = false);
+      bool addendum = false, unsigned allocatorIdx = kDefaultAllocator);
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klausler wrote:

Please don't use `unsigned` like this in runtime interfaces; `int` is more consistent.  Using `unsigned` to mean "it's not going to be negative" is common in LLVM but usually not a good idea.

https://github.com/llvm/llvm-project/pull/157731