https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65773
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |5.0 --- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> --- comment #5 sounds like this is an issue in LLVM. SRA (and into-SSA) now take "advantage" of clobbers. Try -fno-lifetime-dse (and -fstack-reuse=none)?