https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103345
Roger Sayle <roger at nextmovesoftware dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Component|other |tree-optimization Ever confirmed|0 |1 CC| |roger at nextmovesoftware dot com Last reconfirmed| |2021-11-21 --- Comment #1 from Roger Sayle <roger at nextmovesoftware dot com> --- The ior form is percieved in tree-ssa's bswap pass implemented in gimple-ssa-store-merging.c. 32 bit load in target endianness found at: _16 = MEM <unsigned int> [(const uint8_t *)ptr_15(D)]; 32-bit nop implementations found: 1 My guess it that it should be trivial to handle the PLUS_EXPR and BIT_XOR_EXPR tree codes at the same time as BIT_IOR_EXPR.