[Bug middle-end/81318] [8 regression] ICE in to_reg_br_prob_base, at profile-count.h:189

dcb314 at hotmail dot com gcc-bugzilla@gcc.gnu.org
Wed Jul 19 20:10:00 GMT 2017


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81318

--- Comment #10 from David Binderman <dcb314 at hotmail dot com> ---
I am not so sure this one is fixed.

I have this code:

__attribute__((__cold__)) a();
b() { a(); }
c() {
  b();
  if (d())
    e();
}

derived from Linux kernel and it does this with revision 250361:

during GIMPLE pass: profile_estimate
bug368.c: In function ‘c’:
bug368.c:7:1: internal compiler error: in to_reg_br_prob_base, at
profile-count.h:189
 }
 ^
0xb58ed1 profile_probability::to_reg_br_prob_base() const
        ../../trunk/gcc/profile-count.h:189
0xb58ed1 estimate_bb_frequencies(bool)
        ../../trunk/gcc/predict.c:3568
0xb5cce4 tree_estimate_probability(bool)
        ../../trunk/gcc/predict.c:2825
0xb5d193 execute
        ../../trunk/gcc/predict.c:3710
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