diff options
| 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 | ef1bbfc7620cfd28a2692df7d08b2c9d336c4f52 (patch) | |
| tree | 77bd6c8b5ded72397f1257161f1b6bea84502762 /llvm/lib/Bitcode/Reader/BitcodeReader.cpp | |
| parent | d42a60baa0013717646d8509b561f5d2a0e6b20f (diff) | |
| download | bcm5719-llvm-ef1bbfc7620cfd28a2692df7d08b2c9d336c4f52.tar.gz bcm5719-llvm-ef1bbfc7620cfd28a2692df7d08b2c9d336c4f52.zip | |
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).
llvm-svn: 45354
Diffstat (limited to 'llvm/lib/Bitcode/Reader/BitcodeReader.cpp')
0 files changed, 0 insertions, 0 deletions
