[Bug c/53083] gcc bug in moving from the SSE registers back onto the heap.

[ossman at cendio dot se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53083

--- Comment #11 from Pierre Ossman <ossman at cendio dot se> ---
Created attachment 30419
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30419&action=edit
main.c

We've also been hitting this, so here is a reduced test case to provoke the
bug. Output in the failing case:

test_spans(nspans=36)
    101,100 + 1
    101,0 + 1
    0,100 + 0
Aborted (core dumped)


And for a correct run:

test_spans(nspans=36)
    101,100 + 1
    101,100 + 1
    101,100 + 1
    101,100 + 1
    101,101 + 1
    101,101 + 1
    101,99 + 1
    101,99 + 1
    101,102 + 1
...