[Bug target/56875] vax target miscompiles short negative constants for 64bit values

[jbglaw@lug-owl.de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56875

--- Comment #4 from Jan-Benedict Glaw <jbglaw@lug-owl.de> ---
You're quite right, Martin!  It's a simple fix on the GCC side working around a
buggy gas, and it would also work with a fixed gas. However, gas isn't too
simple to fix, at least not with a well-architected fix.