> Anyway, looking at pro_and_epilogue dumps, with additional > -fstack-protector-strong we decrease sp only by 4176, while without it by > 8224 (on x86_64; the testcase fails on all targets I've tried so far > ({x86_64,i686,powerpc64{,le},s390{,x},aarch64,armv7hl}-linux).
Yeah, the threshold is around 4KB, feel free to add a few more HUNDREDs. -- Eric Botcazou