Rollup of 11 pull requests#79165

Closed

m-ou-se wants to merge 26 commits intorust-lang:masterfrom

m-ou-se:rollup-iu074zk

Commits on Oct 25, 2020

Commits on Oct 26, 2020

Updated documentation, x86 feature detection testing, and removed LLVM 9 exclusive features
DevJPM
committed

Commits on Nov 12, 2020

stability: More precise location for deprecation lint on macros
petrochenkov
committed

Commits on Nov 14, 2020

Tighten the bounds on atomic Ordering in std::sys::unix::weak
thomcc
committed

Commits on Nov 15, 2020

Commits on Nov 16, 2020

instrument `QueryNormalizer::fold_ty`
lcnr
committed

Commits on Nov 18, 2020