https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81161
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2017-06-22 Ever confirmed|0 |1 --- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> --- Enhance gimple-ssa-store-merging.c to handle non-constants aka marry it with the bswap pass (in tree-ssa-math-opts.c) which does the analysis (only on byte granularity...) seeing that all values stem from shifting/oring of parts of the same value.