mozilla/rust — pull request #7763 by dotdash (2013-07-13 02:20:05+00:00)
Title: Avoid unnecessary basic blocks for allocas, return and else

These commits remove a bunch of empty or otherwise unnecessary blocks, reducing the size of the pre-optimization IR and improving its readability. `librustc.ll` created with `--passes ""` shrinks by about 120k lines which equals about 5% of the total size.