https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42587
--- Comment #13 from andi at firstfloor dot org --- > The code in the initial report optimizes to bswap with GCC8.1 and later. > Is that the test case you meant? GCC8.1 was released on May 2, 2018, well > before your Nov comment, so maybe you meant something else. Should be ok to close then. Thanks