[llvm-bugs] [Bug 27700] New: Regression(likely r268806): Building llvm takes 20% longer than it used to

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=27700

            Bug ID: 27700
           Summary: Regression(likely r268806): Building llvm takes 20%
                    longer than it used to
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Support Libraries
          Assignee: unassignedbugs at nondot.org
          Reporter: nicolasweber at gmx.de
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

We have a bunch of bots that basically do:

1. `svn up` llvm, run cmake, run `ninja` to build all of llvm
2. build Chromium with that just-built clang

The time of the first step increased by about 20% on all our bots. The
regression range is r268806:268820 (both ends inclusive). Maybe r268806 makes
things slow for some reason?

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