Fangrui Song 7b6b15e010 [profile][test] Improve coverage-linkage.cpp with ld.lld --gc-sections ...

The __llvm_prf_names section uses SHF_GNU_RETAIN.  However, GNU ld before 2015-10
(https://sourceware.org/bugzilla/show_bug.cgi?id=19161) neither supports it nor
retains __llvm_prf_names according to __start___llvm_prf_names. So --gc-sections
does not work on such old GNU ld.

This is not a problem for gold and sufficiently new lld.

2021-07-06 11:08:47 -07:00

1.4 KiB

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