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| author | Chris Lattner <sabre@nondot.org> | 2007-12-25 19:06:45 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2007-12-25 19:06:45 +0000 |
| commit | ff26ab227713afdd6f54f1b539df10cbe8f481e5 (patch) | |
| tree | fc552e93b7d7b280967d345e72af17096edfbca7 /lib/Linker/LinkModules.cpp | |
| parent | dc32d19c1c8f976e078784da09df1095077738d7 (diff) | |
Don't break critical edges for single-bb loops, this helps with PR1877, though
it is only a partial fix. This change is noise for most programs, but
speeds up Shootout-C++/matrix by 20%, Ptrdist/ks by 24%, smg2000 by 8%,
hexxagon by 9%, bzip2 by 9% (not sure I trust this), ackerman by 13%, etc.
OTOH, it slows down Shootout/fib2 by 40% (I'll update PR1877 with this info).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45354 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Linker/LinkModules.cpp')
0 files changed, 0 insertions, 0 deletions