Merging r257915:

Merging r257915:

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r257915 | rafael.espindola | 2016-01-15 10:23:46 -0800 (Fri, 15 Jan 2016) | 9 lines

Don't try to check all uses if lazy loading.

This means that LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN will not be set
in a few cases.

This should have no impact in ld64 since it doesn't use lazy loading
when merging modules and that is when it checks
LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_38@269978 91177308-0d34-0410-b5e6-96231b3b80d8