Optimize comparisons to empty string.
authorPeter Collingbourne <peter@pcc.me.uk>
Tue, 9 Dec 2014 01:02:12 +0000 (01:02 +0000)
committerPeter Collingbourne <peter@pcc.me.uk>
Tue, 9 Dec 2014 01:02:12 +0000 (01:02 +0000)
commitc5b84a53f7f0c2a8eb86fed138f6d4da78816cfb
treea6282d6d02366c7e998db9b23b69aaa251192cf1
parentc8cf2b88bca148c2aa936150aec1689790fbd237
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
llgo/irgen/strings.go