[Bug target/37010] -mno-accumulate-outgoing-args doesn't work with stack alignment

[Joey dot ye at intel dot com]

------- Comment #8 from Joey dot ye at intel dot com  2008-08-04 09:11 -------
Root cause is that outgoing parameter frame is aligned based on stack pointer.
Namely, address_of_stack_param = SP + offset + fixed_padding.

With -mpreferred-stack-boundary=2, alignment of SP is only 4 bytes. Outgoing
frame won't be possibly aligned with 16 bytes without additional 'and $-16,
sp'.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37010