Chris Lattner 50fb46983c Teach loop rotate to hoist trivially invariant instructions ... in the duplicated block instead of duplicating them. Duplicating them into the end of the loop and the preheader means that we got a phi node in the header of the loop, which prevented LICM from hoisting them. GVN would usually come around later and merge the duplicated instructions so we'd get reasonable output... except that anything dependent on the shoulda-been-hoisted value can't be hoisted. In PR5319 (which this fixes), a memory value didn't get promoted. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113134 91177308-0d34-0410-b5e6-96231b3b80d8		2010-09-06 01:10:22 +00:00
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2009-01-25-SingleEntryPhi.ll
basic.ll	Teach loop rotate to hoist trivially invariant instructions	2010-09-06 01:10:22 +00:00
dg.exp
indirectbr.ll
LRCrash-1.ll
LRCrash-2.ll
LRCrash-3.ll
LRCrash-4.ll
LRCrash-5.ll
phi-duplicate.ll	When rotating loops, put the original header at the bottom of the	2010-08-17 17:39:21 +00:00
PhiRename-1.ll	Delete useless trailing semicolons.	2010-01-05 17:55:26 +00:00
PhiSelfRefernce-1.ll
pr2639.ll
preserve-scev.ll