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[Bug lto/87988] [9 regression] Streaming of ABSTRACT_ORIGIN is expensive


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87988

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 44995
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44995&action=edit
untested patch

It's surprisingly difficult to hack around things ... but the attached at least
survives lto.exp testing.

Can you see if it fixes the regression?

I very much expect it to break FAT objects since I "wreck" abstract origins
in a way others may not be hapoy about.

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