https://gcc.gnu.org/bugzilla/show_bug.cgi?id=21111
--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> --- So to sum up, a SSA default def would have to be expanded to an explicit (zero) initialization. I suppose memory doesn't have a NaT state so stack allocation for locals doesn't have to change but decls eventually expanding to pseudos would have to go through the same exercise. Since we now have -ftrivial-auto-var-init=zero that might serve as a workaround for GCC 12. But I guess trying to fix this in RTL expansion shouldn't be too difficult (gated with a new target hook), if anyone really cares. Do any better maintained archs than ia64 have NaTs? NVPTX was mentioned, but I guess that's not really easier to handle since it's also a meta-ISA.
