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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2012-08-30 15:39:42 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2012-08-30 15:39:42 +0000 |
| commit | d70846ec1b79162d519620ddf07bcb7a64b65eb5 (patch) | |
| tree | 5c1607e51c17567cd462d90493ff17e3c12a6287 /lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp | |
| parent | c81fe9cab545a93a61c059b1c2813f622aef43ae (diff) | |
LoopRotate: Also rotate loops with multiple exits.
The old PHI updating code in loop-rotate was replaced with SSAUpdater a while
ago, it has no problems with comples PHIs. What had to be fixed is detecting
whether a loop was already rotated and updating dominators when multiple exits
were present.
This change increases overall code size a bit, mostly due to additional loop
unrolling opportunities. Passes test-suite and selfhost with -verify-dom-info.
Fixes PR7447.
Thanks to Andy for the input on the domtree updating code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162912 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp')
0 files changed, 0 insertions, 0 deletions