[Bug target/66906] [4.9/5/6] gcc.dg/torture/stackalign/nested-1.c fails on ICE with -O0 -m32 -mregparm=3 or -miamcu

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66906

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
We fail to account static chain on stack with stack alignment.