[clang] [OpenACC][CIR] Lower 'num_workers' for parallel/kernels (PR #136578)

[Andy Kaylor via cfe-commits]

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@@ -109,14 +126,15 @@ class OpenACCClauseCIREmitter final
   }
 
   void VisitDeviceTypeClause(const OpenACCDeviceTypeClause &clause) {
+    lastDeviceTypeClause = &clause;
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andykaylor wrote:

What's the lifetime of this object? Who owns it?

https://github.com/llvm/llvm-project/pull/136578