https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96966
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|redundant memcpy not |[8/9/10/11 Regression]
|eliminated after pointer |redundant memcpy not
|subtraction |eliminated after pointer
| |subtraction
Known to work| |8.1.0, 8.2.0
Known to fail| |10.2.0, 11.0, 7.3.0, 8.3.0,
| |9.2.0
Keywords| |missed-optimization
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
According to Godbolt, GCC 8.1 and 8.2 emit optimal code for both functions but
GCC 8.3 emits the less optimal code for f and has g jump to it. Starting with
10.1, GCC emits the same suboptimal code for both functions.
