https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90340
--- Comment #5 from Fredrik Hederstierna <fredrik.hederstie...@securitas-direct.com> --- I use patched sources from http://gcc.hederstierna.com/csibe I think you could download and try it out. Toolchain I build with https://github.com/fredrikhederstierna/buildbuddy Otherwise I think there are at least two more code size regressions open for gcc-9.1.0 on ARM against CSiBE, so maybe there are already some CSiBE test setup running that could be quicker path forward. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90249 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90255 Code size regressions on CSiBE for gcc-9.1.0 I think is worked on. Thanks/Fredrik