[clang] [llvm] [TargetParser] Add a list of Intel GPUs, and use it in offload-arch (PR #222072)

[Nikita Kornev via cfe-commits]

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@@ -173,11 +189,42 @@ int printGPUsByLevelZero() {
     CALL_ZE_AND_CHECK(zeDeviceGet, Driver, &DeviceCount, Devices.data());
 
     for (auto Device : Devices) {
+      ze_device_ip_version_ext_t IPVersion = {};
+      IPVersion.stype = ZE_STRUCTURE_TYPE_DEVICE_IP_VERSION_EXT;
+      IPVersion.pNext = nullptr;
+
       ze_device_properties_t DeviceProperties = {};
       DeviceProperties.stype = ZE_STRUCTURE_TYPE_DEVICE_PROPERTIES;
-      DeviceProperties.pNext = nullptr;
+      DeviceProperties.pNext = &IPVersion;
       CALL_ZE_AND_CHECK(zeDeviceGetProperties, Device, &DeviceProperties);
-      llvm::outs() << DeviceProperties.name << '\n';
+
+      // A driver that does not support the extension leaves the chained
+      // structure untouched, in which case there is no architecture to name.
+      if (IPVersion.ipVersion == 0) {
+        if (Verbose)
+          llvm::errs() << "Unable to query the IP version of device '"
+                       << DeviceProperties.name << "'\n";
+        continue;
+      }
+
+      if (Verbose)
+        llvm::errs() << "Found device '" << DeviceProperties.name << "'\n";
+
+      // Naming an unknown device after its GMDID would print something that
+      // --offload-arch cannot accept, because this build knows no IGCA level to
+      // compile for.  Report it instead, spelling out the GMDID so that the
+      // device can be identified.
+      StringRef Arch = getIntelGPUArchName(IPVersion.ipVersion);
+      if (Arch.empty()) {
+        llvm::errs() << "Unknown Intel GPU '" << DeviceProperties.name
+                     << "', which reports the architecture "
+                     << IntelGPU::getNumericArchName(
+                            IntelGPU::decodeGMDID(IPVersion.ipVersion))
+                     << "\n";
+        return 1;
+      }
+
+      llvm::outs() << Arch << '\n';
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KornevNikita wrote:

Replied in the original thread.

https://github.com/llvm/llvm-project/pull/222072