Auto merge of #27822 - arielb1:inline-round-take-2, r=Gankro
Auto merge of #27822 - arielb1:inline-round-take-2, r=Gankro

This speeds up rustc on #25916 from 1.36±0.022s to 1.326±0.025s

Tests pass locally (even on 32-bit :-)

r? @Gankro 

aidancully/rust,dwillmer/rust,GBGamer/rust,dwillmer/rust,dwillmer/rust,graydon/rust,aidancully/rust,dwillmer/rust,dwillmer/rust,aidancully/rust,graydon/rust,GBGamer/rust,dwillmer/rust,dwillmer/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,GBGamer/rust,GBGamer/rust,graydon/rust,GBGamer/rust,graydon/rust,aidancully/rust,GBGamer/rust,dwillmer/rust,GBGamer/rust,GBGamer/rust