Merge pull request #9356 from swiftlang/bugfix/lldb-rebranch-test-loclist

[lldb][test] TestLocationListLookup.py: XFAIL on x86

The location lists produced for the `this` parameter by Clang when using the old LiveDebugVariables pass (`-experimental-debug-variable-locations=false`) on x86 cause this test to fail.

rdar://135577167

Author: Michael137

lldb/test/API/functionalities/location-list-lookup/TestLocationListLookup.py

@@ -48,6 +48,7 @@ def test_loclist_frame_var(self):
     @skipIf(dwarf_version=["<", "3"])
     @skipIf(compiler="clang", compiler_version=["<", "12.0"])
     @skipUnlessDarwin
+    @expectedFailureAll(archs=["x86_64"])
     def test_loclist_expr(self):
         self.build()
         self.check_local_vars(self.launch(), check_expr=True)