Add test.config.split_mode variable to clean up if statements

Author: ayylol

sycl/test-e2e/format.py

@@ -156,7 +156,7 @@ def execute(self, test, litConfig):
 
         devices_for_test = []
         triples = set()
-        if "run-mode" not in test.config.available_features:
+        if test.config.split_mode == "build-only":
             if "unsplit-test-mode" in test.requires or "TEMPORARY_DISABLED" in test.requires:
                 return lit.Test.Result(
                     lit.Test.UNSUPPORTED, "Test unsupported for this environment"
@@ -237,8 +237,8 @@ def get_extra_env(sycl_devices):
                 for i in ["%{run}", "%{run-unfiltered-devices}", "%if run-mode"]
             )
 
-            if (is_run_line and "run-mode" not in test.config.available_features) or (
-                not is_run_line and "build-mode" not in test.config.available_features
+            if (is_run_line and test.config.split_mode == "build-only") or (
+                not is_run_line and test.config.split_mode == "run-only"
             ):
                 directive.command = ""
 
@@ -297,10 +297,7 @@ def get_extra_env(sycl_devices):
             test, litConfig, useExternalSh, script, tmpBase
         )
 
-        if (
-            len(devices_for_test) > 1
-            or "run-mode" not in test.config.available_features
-        ):
+        if (len(devices_for_test) > 1 or test.config.split_mode == "build-only"):
             return result
 
         # Single device - might be an XFAIL.

sycl/test-e2e/lit.cfg.py

@@ -40,13 +40,14 @@
 # split-mode: Set if tests should run normally or with split build/run
 match lit_config.params.get("split-mode", "both"):
     case "run":
+        config.split_mode="run-only"
         config.available_features.add("run-mode")
     case "build":
-        config.available_features.add("build-mode")
+        config.split_mode="build-only"
         config.sycl_devices = []
     case _:
+        config.split_mode="unsplit"
         config.available_features.add("run-mode")
-        config.available_features.add("build-mode")
         config.available_features.add("unsplit-test-mode")
 
 # Cleanup environment variables which may affect tests