https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110074
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2023-06-01
Ever confirmed|0 |1
Summary|code bloat with |-fprofile-arcs profiles
|-fprofile-arcs + |arcs generated by
|-fsanitize=bounds |-fsanitize=bounds
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Simplified example:
```
int array[104];
int f(int t)
{
return array[t];
}
```
Compile this at -fprofile-arcs -O2 -fsanitize=bounds and in .optimized we
have:
```
PROF_edge_counter_5 = __gcov0._Z1fi[0];
PROF_edge_counter_6 = PROF_edge_counter_5 + 1;
__gcov0._Z1fi[0] = PROF_edge_counter_6;
# DEBUG BEGIN_STMT
_11 = (sizetype) t_1(D);
if (_11 >= 104)
goto <bb 3>; [0.05%]
else
goto <bb 4>; [99.95%]
<bb 3> [local count: 536864]:
_12 = (unsigned long) t_1(D);
__builtin___ubsan_handle_out_of_bounds (&*.Lubsan_data0, _12);
<bb 4> [local count: 1073741824]:
PROF_edge_counter_7 = __gcov0._Z1fi[1];
PROF_edge_counter_8 = PROF_edge_counter_7 + 1;
__gcov0._Z1fi[1] = PROF_edge_counter_8;
_4 = array[t_1(D)];
```
But we do really need to profile that arc?
