[llvm] [offload] Fix compatibility for level_zero 25.22.33944 (PR #214215)

[Alex Duran via llvm-commits]

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@@ -177,16 +178,15 @@ class L0CmdListManagerTy {
                            ze_event_handle_t SignalEvent = nullptr,
                            uint32_t NumWaitEvents = 0,
                            ze_event_handle_t *WaitEvents = nullptr) {
-    auto zeCommandListAppendHost = Context.zeCommandListAppendHostFunction;
-    if (!zeCommandListAppendHost)
+    if (!api_helper::canCall<zeCommandListAppendHostFunction>())
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adurang wrote:

I'm not sure about this but, is it possible for the routine not to exist, but the extension in the driver to exist (and available through the getExtension APIs)?

https://github.com/llvm/llvm-project/pull/214215