------- Comment #6 from bonzini at gnu dot org 2009-09-24 06:06 ------- Not a dup, since this is about shortening the mode, rather than about eliminating zero extensions.
-- bonzini at gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |UNCONFIRMED Keywords| |missed-optimization Resolution|DUPLICATE | Summary|unnecessary REX prefix |operation performed | |unnecessarily in 64-bit mode http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34653