New LLDB test case failures for Swift 5.1 toolchain

Following 3 LLDB tests are failing with the latest swift 5.1 toolchain on ppc64le - ubuntu 16.04:-
Failing Tests (3):
lldb-Suite :: lang/swift/metatype/TestSwiftMetatype.py
lldb-Suite :: lang/swift/swift_reference_counting/TestSwiftReferenceCount.py
lldb-Suite :: lang/swift/zero_size_generic_self/TestSwiftZeroSizeGenericSelf.py

Attached are the detailed logs at https://bugs.swift.org/browse/SR-10968.

What are these tests trying to test out? Also any recent changes that could have caused this, since they were passing until last week?

I have set up the folliwing jobs at "https://ci-external.swift.org/" for building Swift 5.1 branch toolchain on PPC64LE.

    -   Swift - ppc64le (Tools RA, Stdlib RD, No test suites) (swift-5.1-branch)
    -   Swift - ppc64le (Tools RA, Stdlib RD, All test suites) (swift-5.1-branch)

The job for just building Swift 5.1 toolchain without any test suite execution completes successfully:-
https://ci-external.swift.org/job/oss-swift-5.1-RA-linux-ubuntu-16.04-ppc64le/lastSuccessfulBuild/console

However the job for building Swift 5.1 toolchain with entire test suite execution fails:-
https://ci-external.swift.org/job/oss-swift-5.1-RA-linux-test-ubuntu-16.04-ppc64le/lastFailedBuild/console

This failure is seen due to:
Failing Tests (3):
lldb-Suite :: lang/swift/metatype/TestSwiftMetatype.py
lldb-Suite :: lang/swift/swift_reference_counting/TestSwiftReferenceCount.py
lldb-Suite :: lang/swift/zero_size_generic_self/TestSwiftZeroSizeGenericSelf.py

Still trying to figure this out, but in the interest of time/efforts, any suggestions are welcome.

Hi, any help here would be greatly appreciated. Hoping to resolve this one soon.

I replied on JIRA.

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