tree eeebea0d30f5f6f25fe37a691f7d1c81469871e1
parent 71bcb6dbc4b6d7412c55571ec617e2c4c6110d3a
author Peter Collingbourne <peter@pcc.me.uk> 1418086932 +0000
committer Copybara-Service <copybara-worker@google.com> 1599161500 -0700

Optimize comparisons to empty string.

Geo-mean performance improvement of 0.2% (-0.3% - 0.9% @ 95% CI).

Differential Revision: http://reviews.llvm.org/D6569

llvm-svn: 223728
GitOrigin-RevId: c5b84a53f7f0c2a8eb86fed138f6d4da78816cfb