[llvm-branch-commits] [flang] [mlir] [flang][OpenMP][NFC] remove globals with mlir::StateStack (PR #144898)

[Sergio Afonso via llvm-branch-commits]

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@@ -200,9 +201,41 @@ class HostEvalInfo {
 /// the handling of the outer region by keeping a stack of information
 /// structures, but it will probably still require some further work to support
 /// reverse offloading.
-static llvm::SmallVector<HostEvalInfo, 0> hostEvalInfo;
-static llvm::SmallVector<const parser::OpenMPSectionsConstruct *, 0>
-    sectionsStack;
+class HostEvalInfoStackFrame
+    : public mlir::StateStackFrameBase<HostEvalInfoStackFrame> {
+public:
+  MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(HostEvalInfoStackFrame)
+
+  HostEvalInfo info;
+};
+
+static HostEvalInfo *
+getHostEvalInfoStackTop(lower::AbstractConverter &converter) {
+  HostEvalInfoStackFrame *frame =
+      converter.getStateStack().getStackTop<HostEvalInfoStackFrame>();
+  return frame ? &frame->info : nullptr;
+}
+
+/// Stack frame for storing the OpenMPSectionsConstruct currently being
+/// processed so that it can be refered to when lowering the construct.
----------------
skatrak wrote:

```suggestion
/// processed so that it can be referred to when lowering the construct.
```

https://github.com/llvm/llvm-project/pull/144898