[Bug lto/64636] Bootstrapping gcc-4.9.2 fails if lto is enabled

[glaubitz at physik dot fu-berlin.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64636

--- Comment #5 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> ---
I can confirm that disabling LTO on sparc64 makes gcc build fine.