Rollup of 5 pull requests#80568

Closed

GuillaumeGomez wants to merge 10 commits intorust-lang:masterfrom

GuillaumeGomez:rollup-fitgrmd

Commits on Dec 23, 2020

Update and improve `rustc_codegen_{llvm,ssa}` docs
camelid
committed

Commits on Dec 30, 2020

remove unnecessary trailing semicolon from bootstrap
tmiasko
committed
Take type defaults into account in suggestions to reorder generic parameters
max-heller
committed

Commits on Dec 31, 2020