https://github.com/pogo59 commented:
It seems a little odd to have only positive forms of these flags; usually
toggles would have both positive and negative forms. Maybe @MaskRay has an
opinion?
The release note doesn't say: Does `-fextend-lifetimes` imply
`-fextend-this-pointer`? They're implemented as independent toggles but the
effect isn't really independent IIRC. I wonder (years after it was originally
implemented downstream, I know) whether we'd be better off with
`-fextend-lifetimes[={all,this,none}]`. (But maybe wait for a second opinion.)
https://github.com/llvm/llvm-project/pull/110000
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