llvm-6502/lib/Transforms/Scalar
Dan Gohman 1dcad96dc6 Don't split critical edges during the AddUsersIfInteresting phase
of LSR. This makes the AddUsersIfInteresting phase of LSR a pure
analysis instead of a phase that potentially does CFG modifications.

The conditions where this code would actually perform a split are
rare, and in the cases where it actually would do a split the split
is usually undone by CodeGenPrepare, and in cases where splits
actually survive into codegen, they appear to hurt more often than
they help.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70625 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-02 05:36:01 +00:00
..
ADCE.cpp
BasicBlockPlacement.cpp
CMakeLists.txt
CodeGenPrepare.cpp remove empty section 2009-04-07 02:55:53 +00:00
CondPropagate.cpp Avoid making the transformation enabled by my last patch if the new destinations have phi nodes. 2009-04-15 00:43:54 +00:00
ConstantProp.cpp
DCE.cpp
DeadStoreElimination.cpp
GVN.cpp Reapply r68211, with the miscompilations it caused fixed. 2009-04-01 23:53:49 +00:00
GVNPRE.cpp
IndVarSimplify.cpp Remove an obsolete comment. 2009-04-27 22:12:34 +00:00
InstructionCombining.cpp Return null instead of false, as appropriate. 2009-04-25 17:28:45 +00:00
JumpThreading.cpp
LICM.cpp Revert r67798: it breaks llvm-gcc bootstrap on x86-64-linux, presumably due to 2009-03-27 14:56:47 +00:00
LoopDeletion.cpp
LoopIndexSplit.cpp Reword and tidy up some comments. 2009-04-29 22:01:05 +00:00
LoopRotation.cpp
LoopStrengthReduce.cpp Don't split critical edges during the AddUsersIfInteresting phase 2009-05-02 05:36:01 +00:00
LoopUnroll.cpp Adjust loop size estimate for full unrolling; 2009-04-20 22:19:33 +00:00
LoopUnswitch.cpp Remove strange extra semicolons. 2009-03-19 05:51:39 +00:00
Makefile
MemCpyOptimizer.cpp Remove strange extra semicolons. 2009-03-19 05:51:39 +00:00
PredicateSimplifier.cpp
Reassociate.cpp Make the key of ValueRankMap an AssertingVH, so that we die violently 2009-03-31 22:13:29 +00:00
Reg2Mem.cpp
Scalar.cpp
ScalarReplAggregates.cpp fix a crash on a pointless but valid zero-length memset, rdar://6808691 2009-04-21 16:52:12 +00:00
SCCP.cpp Factorize out a concept - no functionality change. 2009-03-21 21:27:31 +00:00
SimplifyCFGPass.cpp
SimplifyHalfPowrLibCalls.cpp
SimplifyLibCalls.cpp "There was a typo in my previous patch which leads to miscompilation of 2009-04-12 18:22:33 +00:00
TailDuplication.cpp
TailRecursionElimination.cpp