[llvm-branch-commits] [flang] [flang][OpenMP] Map simple `do concurrent` loops to OpenMP host constructs (PR #127633)

[Sergio Afonso via llvm-branch-commits]

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@@ -24,7 +25,67 @@ namespace flangomp {
 
 namespace {
 namespace looputils {
-using LoopNest = llvm::SetVector<fir::DoLoopOp>;
+/// Stores info needed about the induction/iteration variable for each `do
+/// concurrent` in a loop nest.
+struct InductionVariableInfo {
+  /// The operation allocating memory for iteration variable.
+  mlir::Operation *iterVarMemDef;
+};
+
+using LoopNestToIndVarMap =
+    llvm::MapVector<fir::DoLoopOp, InductionVariableInfo>;
+
+/// For the \p doLoop parameter, find the operation that declares its iteration
+/// variable or allocates memory for it.
+///
+/// For example, give the following loop:
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skatrak wrote:

```suggestion
/// For example, given the following loop:
```

https://github.com/llvm/llvm-project/pull/127633