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* When rotating loops, put the original header at the bottom of theDan Gohman2010-08-171-5/+17
| | | | | | | loop, making the resulting loop significantly less ugly. Also, zap its trivial PHI nodes, since it's easy. llvm-svn: 111255
* Fix some tests that didn't test anything.Benjamin Kramer2010-06-261-1/+1
| | | | llvm-svn: 106954
* fix PR5837 by having SSAUpdate reuse phi nodes for theChris Lattner2009-12-211-0/+35
'GetValueInMiddleOfBlock' case, instead of inserting duplicates. A similar fix is almost certainly needed by the machine-level SSAUpdate implementation. llvm-svn: 91820
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