Linux/ARM: Bus error with -O3 flag of clang/llvm-3.6 while running unit-test of .NET Core

[Tim Northover via llvm-commits]

On 13 July 2016 at 21:14, Geunsik Lim <leemgs at gmail.com> wrote:
> Thank you for sharing the FreeBSD manpage. BTW, Is O4 flag available now?
> * -O4 and higher: Currently equivalent to -O3

It won't give you an error (just a warning), but no-one I know thinks
doing anything special with it is a good idea. It's accepted purely
for compatibility I think.

Tim.