Created by: joshua-warburton
This patch fixes an intermittent issue when the CI tests are run on AArch64 V8.0 machines. Depending on the compiler used to build the tests, SIGILLs or SEGFAULTS are triggered when generated code is run before the generated code is flushed from the cache.
This change adds an explicit cache flush in the test that has been exhibiting this flaky behaviour.
Fixes #5033 (closed)