[PATCH] D27560: Always run GlobalDCE at O0

[Mehdi AMINI via Phabricator via llvm-commits]

mehdi_amini added a comment.

Another reason -O0 isn't great / enough to debug when LLVM is misbehaving is that it impacts the clang codegen (lifetime intrinsics, etc.).


https://reviews.llvm.org/D27560