[wonchung-microsoft]

Cherrypick from the following branches in win-onnxruntime repo.
dev/amd/ozhang/update_mgx_ep_creation
dev/kvadsariya/auto_ep_migraphx

This change allows MigraphX EP (AMD GPU EP) to be selected through auto ep (prefer gpu) policy.

[Nick Eubanks (nieubank)]

You'll probably want to add a test for this since MiGraphX has a provider test in migraphx_basic_test.cc. Something like

TEST(MIGraphXExecutionProviderTest, AutoEp_PreferGpu) {
  PathString model_name = ORT_TSTR("migraphx_basic_test.onnx");
  
  onnxruntime::Model model("test", false, DefaultLoggingManager().DefaultLogger());
  std::vector<int> dims = {1, 3, 2};
  CreateBaseModel(model, dims);
 
  auto status = onnxruntime::Model::Save(model, model_name);
  ASSERT_TRUE(status.IsOK());

  auto env = Ort::Env();
  env.UpdateEnvWithCustomLogLevel(OrtLoggingLevel::ORT_LOGGING_LEVEL_WARNING);

  {
    env.RegisterExecutionProviderLibrary(kMIGraphXExecutionProvider, ORT_TSTR("onnxruntime_providers_migraphx.dll"));

    Ort::SessionOptions so;
    so.SetEpSelectionPolicy(OrtExecutionProviderDevicePolicy_PREFER_GPU);
    Ort::Session session_object(env, model_name.c_str(), so);
    EXPECT_TRUE(SessionHasEp(session_object, kMIGraphXExecutionProvider));
  }

  env.UnregisterExecutionProviderLibrary(kMIGraphXExecutionProvider);
}

[github-actions]

You can commit the suggested changes from lintrunner.

[Ted Themistokleous (TedThemistokleous)]

How was this even approved? This breaks builds completely on Linux side builds

[Ted Themistokleous (TedThemistokleous)]

Hey it looks like your team pulled out the CI entirely for MIGraphX, and this is why all your testing looks good. There's no coverage anymore for MIGraphX EP being done. Not sure why this wasn't discussed between our teams but we're flying blind without any CI during integration.

#25418

[Changming Sun (snnn)]

Hi there! We haven't cut the release branch for this version yet, so I'm removing the release:1.23.0 label for now to keep things tidy. Thanks so much for your contribution! We'll make sure this gets included when the release is prepared. 🤖