[Bug tree-optimization/117132] A call to a function which returns a wider result can be considered a sibling call

[lh_mouse at 126 dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117132

--- Comment #2 from LIU Hao <lh_mouse at 126 dot com> ---
(In reply to Andrew Pinski from comment #1)
> It depends on the ABI, some require the extension while others don't.
> PR 14441 is for a target which has the extension.

This is not about sign-extension but truncation which I think should always be
safe.