[llvm-branch-commits] [flang] [Flang][OpenMP] Derived type explicit allocatable member mapping (PR #96266)

[Sergio Afonso via llvm-branch-commits]

================
@@ -175,99 +271,63 @@ getComponentObject(std::optional<Object> object,
   return getComponentObject(baseObj.value(), semaCtx);
 }
 
-static void
-generateMemberPlacementIndices(const Object &object,
-                               llvm::SmallVectorImpl<int> &indices,
-                               semantics::SemanticsContext &semaCtx) {
+void generateMemberPlacementIndices(const Object &object,
+                                    llvm::SmallVectorImpl<int64_t> &indices,
+                                    semantics::SemanticsContext &semaCtx) {
   auto compObj = getComponentObject(object, semaCtx);
   while (compObj) {
-    indices.push_back(getComponentPlacementInParent(compObj->sym()));
+    int64_t index = getComponentPlacementInParent(compObj->sym());
+    assert(index >= 0);
+    indices.push_back(index);
     compObj =
         getComponentObject(getBaseObject(compObj.value(), semaCtx), semaCtx);
   }
 
-  indices = llvm::SmallVector<int>{llvm::reverse(indices)};
+  indices = llvm::SmallVector<int64_t>{llvm::reverse(indices)};
----------------
skatrak wrote:

Nit: How about doing the reversal in place to avoid allocations? Some 
combination of `llvm::zip_equal(indices, llvm::reverse(indices))` and 
`std::swap` perhaps?

https://github.com/llvm/llvm-project/pull/96266
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