[llvm] [XCOFF][OBJECT] get symbol size by calling XCOFF interfaces (PR #67304)

[Chen Zheng via llvm-commits]

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chenzheng1030 wrote:

Thanks, the test file name is changed to be more focused. This test is from https://github.com/llvm/llvm-project/pull/67284. The bug was detected there. I added a `FIXME` in the base test and in this PR, the `FIXME` is removed and correct size is shown. See the final commit https://github.com/llvm/llvm-project/pull/67304/commits/b9a3a7a6cda9d98520a7d314b4cbdd839407fce6 after PR https://github.com/llvm/llvm-project/pull/67284 is merged.

https://github.com/llvm/llvm-project/pull/67304