save LTO import info and check it when trying to reuse build products#67020

Merged

bors merged 2 commits intorust-lang:masterfrom

pnkfelix:issue-59535-accumulate-past-lto-imports

Dec 21, 2019

Commits on Dec 20, 2019

save LTO import information and check it when trying to reuse build products.
pnkfelix
committed
General purpose teest cases contributed by mw.
pnkfelix
committed