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| author | Andrew Trick <atrick@apple.com> | 2011-08-11 23:36:16 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2011-08-11 23:36:16 +0000 |
| commit | b1831c66403315a1d84593b7c198ddbd43a574cf (patch) | |
| tree | b3b6948180fe88ddd54f5a0ea1f3ce0d48e72ce4 /lib/CodeGen/LiveIntervalUnion.cpp | |
| parent | 8facc7def811aeb3db20233de0aef1c69f0d1922 (diff) | |
Allow loop unrolling to get known trip counts from ScalarEvolution.
SCEV unrolling can unroll loops with arbitrary induction variables. It
is a prerequisite for -disable-iv-rewrite performance. It is also
easily handles loops of arbitrary structure including multiple exits
and is generally more robust.
This is under a temporary option to avoid affecting default
behavior for the next couple of weeks. It is needed so that I can
checkin unit tests for updateUnloop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137384 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LiveIntervalUnion.cpp')
0 files changed, 0 insertions, 0 deletions