[Bug target/58139] PowerPC volatile VSX register live across call

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58139

--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> New Revision: 202286

This seems to break bootstrap on *86*-*-*, see

http://gcc.gnu.org/ml/gcc-regression/2013-09/