https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64796
thopre01 at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Last reconfirmed| |2015-01-27 CC| |thopre01 at gcc dot gnu.org Assignee|unassigned at gcc dot gnu.org |thopre01 at gcc dot gnu.org Ever confirmed|0 |1 Known to fail| |5.0 --- Comment #2 from thopre01 at gcc dot gnu.org --- Indeed, I didn't realize --target_board could specifies several boards, which rules out the use of a global. It is also true that 32-bit targets can do a 64-bit byte swap thanks to expand_doubleword_bswap () (called from expand_unop when GET_MODE_SIZE (mode) == 2 * UNITS_PER_WORD and that there is a bswap optab for word_mode). Testing a patch right now.