RFR: 8186780: clang-4.0 fastdebug assertion failure in os_linux_x86:os::verify_stack_alignment()

[Martin Buchholz]

On Wed, Jun 20, 2018 at 4:03 PM, Martin Buchholz <martinrb at google.com>
wrote:

> Hi David and build-dev folk,
>
> After way too much build/hotspot hacking, I have a better fix:
>
> clang inlined os::current_stack_pointer into its caller __in the same
> translation unit___ (that could be fixed in a separate change) so of course
> in this case it didn't have to follow the ABI.  Fix is obvious in hindsight:
>
> -address os::current_stack_pointer() {
> +NOINLINE address os::current_stack_pointer() {
>

If y'all like the addition of NOINLINE, it should probably be added to all
of the 14 variants of  os::current_stack_pointer.
Gives me a chance to try out the submit repo.