Emilio G. Cota <c...@braap.org> writes: > On Wed, Feb 07, 2018 at 14:55:36 -0800, Richard Henderson wrote: >> Reviewed-by: Alex Bennée <alex.ben...@linaro.org> >> Reviewed-by: Peter Maydell <peter.mayd...@linaro.org> >> Signed-off-by: Richard Henderson <richard.hender...@linaro.org> > > Just bisected a segfault for aarch64 nbench on a PowerPC host > to this commit (79d61de6bdc398). I've also tested on x86_64 and > aarch64 hosts, and these do not seem to be affected.
I wonder about other hosts without TCG_vec backend support (powerpc is one)? I suspect it must be the fall-back for the vector expanders is wrong. > > To reproduce: > 1. grab this binary: > http://cs.columbia.edu/~cota/qemu/nbench-aarch64 > 2. run it on a PowerPC host with: > $ aarch64-linux-user/qemu-aarch64 nbench-aarch64 -V > > Note: the "-V" (or "-v") flag is important! Without it, there's no segfault. > > I can reproduce this consistently on a Power8 host -- I'm using gcc112 > from the gcc compile farm. > > Thanks, > > Emilio -- Alex Bennée