Chris Lattner 1902ff4d82 This break is bogus and I have no idea why it was there. Basically it prevents ... memoizing code when IV's are used by phinodes outside of loops. In a simple example, we were getting this code before (note that r6 and r7 are isomorphic IV's): li r6, 0 or r7, r6, r6 LBB_test_3: ; no_exit lwz r2, 0(r3) cmpw cr0, r2, r5 or r2, r7, r7 beq cr0, LBB_test_5 ; loopexit LBB_test_4: ; endif addi r2, r7, 1 addi r7, r7, 1 addi r3, r3, 4 addi r6, r6, 1 cmpw cr0, r6, r4 blt cr0, LBB_test_3 ; no_exit Now we get: li r6, 0 LBB_test_3: ; no_exit or r2, r6, r6 lwz r6, 0(r3) cmpw cr0, r6, r5 beq cr0, LBB_test_6 ; loopexit LBB_test_4: ; endif addi r3, r3, 4 addi r6, r2, 1 cmpw cr0, r6, r4 blt cr0, LBB_test_3 ; no_exit this was noticed in em3d. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23602 91177308-0d34-0410-b5e6-96231b3b80d8		2005-10-03 00:37:33 +00:00
..
ADCE.cpp	preserve calling conventions when hacking on code	2005-05-14 12:25:32 +00:00
BasicBlockPlacement.cpp
CondPropagate.cpp	Fix a fixme in CondPropagate.cpp by moving a PhiNode optimization into	2005-08-04 23:24:19 +00:00
ConstantProp.cpp
CorrelatedExprs.cpp
DCE.cpp	clean up and modernize this pass.	2005-05-08 18:45:26 +00:00
DeadStoreElimination.cpp
GCSE.cpp
IndVarSimplify.cpp	Allow indvar simplify to canonicalize ANY affine IV, not just affine IVs with	2005-08-10 01:12:06 +00:00
InstructionCombining.cpp	Factor the GetGEPGlobalInitializer out of this pass and into Transforms/Utils	2005-09-26 05:28:06 +00:00
LICM.cpp	prevent va_arg from being hoisted from a loop	2005-06-20 13:36:33 +00:00
LoopStrengthReduce.cpp	This break is bogus and I have no idea why it was there. Basically it prevents	2005-10-03 00:37:33 +00:00
LoopUnroll.cpp	Eliminate tabs and trailing spaces	2005-04-23 21:38:35 +00:00
LoopUnswitch.cpp
LowerConstantExprs.cpp
LowerGC.cpp
LowerPacked.cpp
Makefile
PRE.cpp
Reassociate.cpp	Fix a problem that Dan Berlin noticed, where reassociation would not succeed	2005-09-02 07:07:58 +00:00
ScalarReplAggregates.cpp
SCCP.cpp	Eliminate GetGEPGlobalInitializer in favor of the more powerful	2005-09-26 05:28:52 +00:00
SimplifyCFG.cpp
TailDuplication.cpp
TailRecursionElimination.cpp	Use the new 'moveBefore' method to simplify some code. Really, which is	2005-08-08 19:11:57 +00:00