[clang] [llvm] [HIPSTDPAR] Add support for globals (PR #146813)

[Juan Manuel Martinez Caamaño via llvm-commits]

================
@@ -114,24 +115,221 @@ static inline void clearModule(Module &M) { // TODO: simplify.
     eraseFromModule(*M.ifuncs().begin());
 }
 
+static inline SmallVector<std::reference_wrapper<Use>>
+collectIndirectableUses(GlobalVariable *G) {
+  // We are interested only in use chains that end in an Instruction.
+  SmallVector<std::reference_wrapper<Use>> Uses;
+
+  SmallVector<std::reference_wrapper<Use>> Tmp(G->use_begin(), G->use_end());
+  while (!Tmp.empty()) {
+    Use &U = Tmp.back();
+    Tmp.pop_back();
----------------
jmmartinez wrote:

```suggestion
    Use &U = Tmp.pop_back_val();
```

https://github.com/llvm/llvm-project/pull/146813