Make testsuite respect SYCL_LIB_DUMPS_ONLY

Running the check-sycl-dumps target sets the SYCL_LIB_DUMPS_ONLY param
for lit which should only enable the ABI dump tests.
However, since 1fde656 we've added a non `lit.formats.ShTest()`
which doesn't respect config.suffixes, so we need to account for this.

Author: ldrumm

sycl/test/lit.cfg.py

@@ -23,8 +23,8 @@
 config.test_format = lit.formats.ShTest()
 
 # suffixes: A list of file extensions to treat as test files.
-dump_only_tests = bool(lit_config.params.get("SYCL_LIB_DUMPS_ONLY", False))
-if dump_only_tests:
+config.dump_only_tests = bool(lit_config.params.get("SYCL_LIB_DUMPS_ONLY", False))
+if config.dump_only_tests:
     config.suffixes = [".dump"]  # Only run dump testing
 else:
     config.suffixes = [
@@ -186,7 +186,7 @@
     )
 
 # Dump-only tests do not have clang available
-if not dump_only_tests:
+if not config.dump_only_tests:
     llvm_config.use_clang(additional_flags=additional_flags)
 
 # Set timeout for test = 10 mins

sycl/test/self-contained-headers/lit.local.cfg

@@ -1,16 +1,16 @@
-import os
-from format import SYCLHeadersTest
+if not config.dump_only_tests:
+    import os
+    from format import SYCLHeadersTest
+    config.test_format = SYCLHeadersTest()
 
-config.test_format = SYCLHeadersTest()
-
-# List of files that are not expected to compile cleanly when used
-# standalone. `os.path.join` is required here so the filtering works
-# cross-platform
-config.sycl_headers_xfail = [
-    os.path.join(
-        "sycl", "ext", "oneapi", "experimental", "backend", "cuda.hpp"
-    ),
-    os.path.join(
-        "sycl", "ext", "intel", "esimd", "detail", "types_elementary.hpp"
-    ),
-]
+    # List of files that are not expected to compile cleanly when used
+    # standalone. `os.path.join` is required here so the filtering works
+    # cross-platform
+    config.sycl_headers_xfail = [
+        os.path.join(
+            "sycl", "ext", "oneapi", "experimental", "backend", "cuda.hpp"
+        ),
+        os.path.join(
+            "sycl", "ext", "intel", "esimd", "detail", "types_elementary.hpp"
+        ),
+    ]