Rollup of 6 pull requests#67380

Closed

Mark-Simulacrum wants to merge 16 commits intorust-lang:masterfrom

Mark-Simulacrum:rollup-e0q8qbh

Commits on Dec 13, 2019

Fix the configure.py TOML field for a couple LLVM options
cuviper
committed

Commits on Dec 15, 2019

make htons const fn
tesuji
committed
Remove now-redundant range check on u128 -> f32 casts
Robin Kruppe
committed

Commits on Dec 16, 2019

Commits on Dec 17, 2019

Revert "Auto merge of #67362 - Mark-Simulacrum:par-4-default, r=alexcrichton"
Mark-Simulacrum
committed
Rollup merge of #65939 - anp:incremental-rustfmt-rollout, r=Mark-Simulacrum
Mark-Simulacrum
authored
Rollup merge of #67286 - cuviper:configure-llvm, r=Dylan-DPC
Mark-Simulacrum
authored
Rollup merge of #67321 - lzutao:htons, r=dtolnay
Mark-Simulacrum
authored
Rollup merge of #67328 - rkruppe:simplify-u128-f32-cast, r=matthewjasper
Mark-Simulacrum
authored
Rollup merge of #67351 - Mark-Simulacrum:always-channel, r=pietroalbini
Mark-Simulacrum
authored
Rollup merge of #67379 - Mark-Simulacrum:revert-par-4-default, r=Mark-Simulacrum
Mark-Simulacrum
authored