https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42588
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |4.9.0 Resolution|--- |FIXED Status|NEW |RESOLVED --- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Fixed in 4.9.0+ Before: (insn 6 3 7 2 (set (subreg:DF (reg/v:DI 62 [ __u ]) 0) (reg/v:DF 64 [ __x ])) /app/example.c:15 -1 (nil)) After: (insn 6 3 7 2 (set (reg/v:DI 86 [ __u ]) (subreg:DI (reg/v:DF 88 [ __x ]) 0)) /app/example.c:15 -1 (nil)) Which means it was fixed by r0-126192.