tree 9ff71e9a56ad2bed08597fed27d3ce07a9cc0917
parent 2c72317e3a1f579c6a527c067ed575c0b92e544e
author Tom Anderson <thomasanderson@chromium.org> 1555433506 -0700
committer Commit Bot <commit-bot@chromium.org> 1555518037 +0000

Optimize string escape functions

When generating Chromium's build files, this reduces the number of cycles gn
uses across all threads from 41,325,733,995 to 38,453,104,830 (-7%) indicated by
callgrind.  Runtime is also reduced from 3.45s to 3.43s (-0.6%) measured with
100 samples.  GN is likely bound more by disk IO and exec_script()'s than CPU
cycles, so that would explain why runtime reduction is only 0.6%.  But 0.6% is
still better than 0%.

BUG=None
R=brettw

Change-Id: Ief145407a0bf3ef00b13ce2532df4ff028f05c89
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/4620
Reviewed-by: Brett Wilson <brettw@google.com>
Commit-Queue: Brett Wilson <brettw@google.com>