[Bug target/79793] Incorrect stack alignment for interrupt handler in 64-bit

[julia.koval at intel dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79793

--- Comment #2 from Yulia Koval <julia.koval at intel dot com> ---
Patch posted at
https://gcc.gnu.org/ml/gcc-patches/2017-03/msg00178.html