[PATCH] D67628: [compiler-rt][crt] pass -O0 in check_cxx_section_exists

[Petr Hosek via Phabricator via llvm-commits]

phosek added a comment.

Could we make the function non-trivial e.g. `__attribute__((constructor)) void f() { asm volatile ("nop"::); }` to ensure that it's not optimized out even at `-O2`?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D67628/new/

https://reviews.llvm.org/D67628