[llvm] [CI][Github] Enable CIR CI build and test (PR #147430)

[Andy Kaylor via llvm-commits]

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@@ -153,11 +183,13 @@ def test_mlir(self):
         )
         self.assertEqual(env_variables["projects_to_build"], "clang;flang;llvm;mlir")
         self.assertEqual(
-            env_variables["project_check_targets"], "check-flang check-mlir"
+            env_variables["project_check_targets"],
+            "check-flang check-mlir",
         )
         self.assertEqual(env_variables["runtimes_to_build"], "")
         self.assertEqual(env_variables["runtimes_check_targets"], "")
         self.assertEqual(env_variables["runtimes_check_targets_needs_reconfig"], "")
+        self.assertEqual(env_variables["enable_cir"], "ON")
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andykaylor wrote:

Yeah, I can do that. I'll post an update with that and the other changes you asked for shortly.

https://github.com/llvm/llvm-project/pull/147430