https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86955
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Blocks| |83819
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The reason is that the strlen pass sees the following:
_1 = &p_4(D)->a;
__builtin_memcpy (_1, "123", 4);
_2 = &MEM[(void *)p_4(D) + 2B];
_3 = __builtin_strlen (_2);
and it doesn't understand that &MEM[(void *)p_4(D) + 2B] actually refers to
p_4(D)->a.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83819
[Bug 83819] [meta-bug] missing strlen optimizations
