[Bug tree-optimization/106422] [13 Regression] ice in duplicate_block, at cfghooks.cc:1115

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106422

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Splitting off the 'leaf' issue would be useful.  And yes, forward threading
would need to be fixed.