[Bug target/60926] Compiler doesn't properly align stack pointer

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60926

--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
Since GCC finds out that g2 only needs 8 byte stack alignment,
it only needs to align stack to 8 byte when calling g2.