[Bug rtl-optimization/47763] Useless initialization of register

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47763

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-02-16 
07:48:24 UTC ---
Why should we care about code quality of function with undefined behavior?
Various optimizations add zero initialization or assume zero initialization of
undefined variables.