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

[Erich Keane 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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erichkeane wrote:

Its owned by the AST, so its lifetime lasts until the AST is destroyed, which is after frontend codegen.

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