[PATCH] D28404: IRGen: Add optnone attribute on function during O0

[Mehdi AMINI via Phabricator via cfe-commits]

mehdi_amini added a comment.

Also note that @chandlerc in r290398 made clang adding "noinline" on every function at O0 by default, which seems very similar to what I'm doing here.

We're still waiting for @rsmith to comment whether it'd be better to `have a LangOpts flag that basically means "pragma clang optimize off is always in effect."` and `Have Sema pretend the pragma is in effect at all times, at -O0`.


https://reviews.llvm.org/D28404