Rollup merge of #81121 - tmiasko:simplify-cfg-no-dbg, r=jonas-schievink
Rollup merge of #81121 - tmiasko:simplify-cfg-no-dbg, r=jonas-schievink

Avoid logging the whole MIR body in SimplifyCfg

graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust