James Molloy bd7c3fb3bf [LSR] Don't try and create post-inc expressions on non-rotated loops ... If a loop is not rotated (for example when optimizing for size), the latch is not the backedge. If we promote an expression to post-inc form, we not only increase register pressure and add a COPY for that IV expression but for all IVs! Motivating testcase: void f(float *a, float *b, float *c, int n) { while (n-- > 0) *c++ = *a++ + *b++; } It's imperative that the pointer increments be located in the latch block and not the header block; if not, we cannot use post-increment loads and stores and we have to keep both the post-inc and pre-inc values around until the end of the latch which bloats register usage. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@278658 91177308-0d34-0410-b5e6-96231b3b80d8		2016-08-15 07:53:03 +00:00
..
ADCE.cpp	[ADCE] Refactoring for new functionality (NFC)	2016-08-05 19:38:11 +00:00
AlignmentFromAssumptions.cpp	Add some comments linking back to PR28400.	2016-08-08 07:03:49 +00:00
BDCE.cpp
CMakeLists.txt
ConstantHoisting.cpp
ConstantProp.cpp	Don't remove side effecting instructions due to ConstantFoldInstruction	2016-07-22 04:54:44 +00:00
CorrelatedValuePropagation.cpp	Teach CorrelatedValuePropagation to mark adds as no wrap	2016-08-10 13:08:34 +00:00
DCE.cpp	Consistently use FunctionAnalysisManager	2016-08-09 00:28:15 +00:00
DeadStoreElimination.cpp	[DSE] Don't remove stores made live by a call which unwinds.	2016-08-12 01:09:53 +00:00
EarlyCSE.cpp	[EarlyCSE] Teach about CSE'ing over invariant.start intrinsics	2016-08-09 20:00:47 +00:00
FlattenCFGPass.cpp
Float2Int.cpp
GuardWidening.cpp	Consistently use FunctionAnalysisManager	2016-08-09 00:28:15 +00:00
GVN.cpp	Consistently use FunctionAnalysisManager	2016-08-09 00:28:15 +00:00
GVNHoist.cpp	Test commit	2016-08-13 11:56:50 +00:00
InductiveRangeCheckElimination.cpp	[IRCE] Change variable grouping; NFC	2016-08-14 01:04:50 +00:00
IndVarSimplify.cpp	[IndVars] Ignore (s|z)exts that don't extend the induction variable	2016-08-13 00:58:31 +00:00
JumpThreading.cpp	Use the range variant of find instead of unpacking begin/end	2016-08-11 22:21:41 +00:00
LICM.cpp	Fix typos /NFC	2016-08-11 22:34:00 +00:00
LLVMBuild.txt
LoadCombine.cpp	[LoadCombine] Simplify code with a brace init. NFC.	2016-08-06 12:11:11 +00:00
LoopDataPrefetch.cpp	[PM] Port LoopDataPrefetch to new pass manager	2016-08-13 04:11:27 +00:00
LoopDeletion.cpp	Consistently use LoopAnalysisManager	2016-08-09 00:28:52 +00:00
LoopDistribute.cpp	[OptDiag,LDist] Convert remaining opt remarks to use the new API	2016-07-21 21:21:34 +00:00
LoopIdiomRecognize.cpp	Target independent codesize heuristics for Loop Idiom Recognition	2016-08-11 18:28:33 +00:00
LoopInstSimplify.cpp	Consistently use LoopAnalysisManager	2016-08-09 00:28:52 +00:00
LoopInterchange.cpp	Use range algorithms instead of unpacking begin/end	2016-08-11 21:15:00 +00:00
LoopLoadElimination.cpp	Use the range variant of transform instead of unpacking begin/end	2016-08-12 04:32:42 +00:00
LoopRerollPass.cpp	Use the range variant of find instead of unpacking begin/end	2016-08-11 22:21:41 +00:00
LoopRotation.cpp	Consistently use LoopAnalysisManager	2016-08-09 00:28:52 +00:00
LoopSimplifyCFG.cpp	Consistently use LoopAnalysisManager	2016-08-09 00:28:52 +00:00
LoopStrengthReduce.cpp	[LSR] Don't try and create post-inc expressions on non-rotated loops	2016-08-15 07:53:03 +00:00
LoopUnrollPass.cpp	Consistently use LoopAnalysisManager	2016-08-09 00:28:52 +00:00
LoopUnswitch.cpp
LoopVersioningLICM.cpp
LowerAtomic.cpp
LowerExpectIntrinsic.cpp
LowerGuardIntrinsic.cpp	[PM] Port LowerGuardIntrinsic to the new PM.	2016-07-28 22:08:41 +00:00
MemCpyOptimizer.cpp	Use range algorithms instead of unpacking begin/end	2016-08-11 21:15:00 +00:00
MergedLoadStoreMotion.cpp	Consistently use FunctionAnalysisManager	2016-08-09 00:28:15 +00:00
NaryReassociate.cpp	Add some comments linking back to PR28400.	2016-08-08 07:03:49 +00:00
PartiallyInlineLibCalls.cpp	Consistently use FunctionAnalysisManager	2016-08-09 00:28:15 +00:00
PlaceSafepoints.cpp
Reassociate.cpp
Reg2Mem.cpp
RewriteStatepointsForGC.cpp	Use the range variant of remove_if instead of unpacking begin/end	2016-08-12 04:32:37 +00:00
Scalar.cpp	[PM] Port LoopDataPrefetch to new pass manager	2016-08-13 04:11:27 +00:00
Scalarizer.cpp	Scalarizer: Support scalarizing intrinsics	2016-07-25 20:02:54 +00:00
SCCP.cpp	Use range algorithms instead of unpacking begin/end	2016-08-11 21:15:00 +00:00
SeparateConstOffsetFromGEP.cpp
SimplifyCFGPass.cpp	Consistently use FunctionAnalysisManager	2016-08-09 00:28:15 +00:00
Sink.cpp	Consistently use FunctionAnalysisManager	2016-08-09 00:28:15 +00:00
SpeculativeExecution.cpp	[PM] Port SpeculativeExecution to the new PM	2016-08-01 21:48:33 +00:00
SROA.cpp	Use the range variant of remove_if instead of unpacking begin/end	2016-08-12 04:32:37 +00:00
StraightLineStrengthReduce.cpp
StructurizeCFG.cpp	Use the range variant of find instead of unpacking begin/end	2016-08-11 22:21:41 +00:00
TailRecursionElimination.cpp	Use the range variant of find/find_if instead of unpacking begin/end	2016-08-12 03:55:06 +00:00