[Bug bootstrap/77359] [7 Regression] AIX bootstrap failure due to alignment of stack pointer + STACK_DYNAMIC_OFFSET

[vogt at linux dot vnet.ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77359

--- Comment #21 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
Patch posted here:
https://gcc.gnu.org/ml/gcc-patches/2016-11/msg00266.html

This needs to pass the AIX testsuite which I cannot run with the available
resources.