[Bug target/59379] [4.9 Regression] gomp_init_num_threads is compiled into an infinite loop with --with-arch=corei7 --with-cpu=slm

[izamyatin at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59379

--- Comment #13 from Igor Zamyatin <izamyatin at gmail dot com> ---
I meant that with 3-stage gcc of r204980 testcase from the attachment was
compiled and ran successfully, i.e. no infinite loop.

Currently debugging shows that routine mul_double_wide_with_sign (which is
actually inlined into aff_combination_scale) from double_int.c is miscompiled:
in one case for a bad revision new_coef got value which is different from the
value for new_coef for r204980