[clang] [OpenACC][CIR] Implement 'device_type' clause lowering for 'init'/'sh… (PR #135102)

[Andy Kaylor via cfe-commits]

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@@ -57,31 +75,90 @@ class OpenACCClauseCIREmitter final
     }
   }
 
+  mlir::acc::DeviceType decodeDeviceType(const IdentifierInfo *II) {
+
+    // '*' case leaves no identifier-info, just a nullptr.
+    if (!II)
+      return mlir::acc::DeviceType::Star;
+    return llvm::StringSwitch<mlir::acc::DeviceType>(II->getName())
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andykaylor wrote:

What does this return if none of the strings is matched?

https://github.com/llvm/llvm-project/pull/135102