Cameron Zwarich ebed6de7b1 Eliminate the use of dominance frontiers in PromoteMemToReg. In addition to ...

eliminating a potentially quadratic data structure, this also gives a 17%
speedup when running -scalarrepl on test-suite + SPEC2000 + SPEC2006. My initial
experiment gave a greater speedup around 25%, but I moved the dominator tree
level computation from dominator tree construction to PromoteMemToReg.

Since this approach to computing IDFs has a much lower overhead than the old
code using precomputed DFs, it is worth looking at using this new code for the
second scalarrepl pass as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123609 91177308-0d34-0410-b5e6-96231b3b80d8

2011-01-17 01:08:59 +00:00

..

AddrModeMatcher.cpp

Change all self assignments X=X to (void)X, so that we can turn on a

2010-12-23 00:58:24 +00:00

BasicBlockUtils.cpp

Fix a non-deterministic loop in llvm::MergeBlockIntoPredecessor.

2011-01-11 22:54:38 +00:00

BasicInliner.cpp

…

BreakCriticalEdges.cpp

indentation

2011-01-14 04:23:53 +00:00

BuildLibCalls.cpp

BuildLibCalls: Nuke EmitMemCpy, EmitMemMove and EmitMemSet. They are dead and superseded by IRBuilder.

2010-12-27 00:25:32 +00:00

CloneFunction.cpp

Revamp the ValueMapper interfaces in a couple ways:

2011-01-08 08:15:20 +00:00

CloneLoop.cpp

split dom frontier handling stuff out to its own DominanceFrontier header,

2011-01-02 22:09:33 +00:00

CloneModule.cpp

Revamp the ValueMapper interfaces in a couple ways:

2011-01-08 08:15:20 +00:00

CMakeLists.txt

Add a new convenience pass for testing InstructionSimplify. Previously

2010-12-20 20:54:37 +00:00

CodeExtractor.cpp

…

DemoteRegToStack.cpp

Change all self assignments X=X to (void)X, so that we can turn on a

2010-12-23 00:58:24 +00:00

InlineFunction.cpp

switch the inliner alignment enforcement stuff to use the

2010-12-25 20:42:38 +00:00

InstructionNamer.cpp

Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which

2010-10-19 17:21:58 +00:00

LCSSA.cpp

split dom frontier handling stuff out to its own DominanceFrontier header,

2011-01-02 22:09:33 +00:00

Local.cpp

Make more passes preserve dominators (or state that they preserve dominators if

2011-01-08 17:01:52 +00:00

LoopSimplify.cpp

this pass claims to preserve scev, make sure to tell it about deletions.

2011-01-11 18:14:50 +00:00

LoopUnroll.cpp

random cleanups

2011-01-11 08:00:40 +00:00

LowerInvoke.cpp

Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which

2010-10-19 17:21:58 +00:00

LowerSwitch.cpp

Switch attribute macros to use 'LLVM_' as a prefix. We retain the old names

2010-10-23 08:10:43 +00:00

Makefile

…

Mem2Reg.cpp

Eliminate the use of dominance frontiers in PromoteMemToReg. In addition to

2011-01-17 01:08:59 +00:00

PromoteMemoryToRegister.cpp

Eliminate the use of dominance frontiers in PromoteMemToReg. In addition to

2011-01-17 01:08:59 +00:00

SimplifyCFG.cpp

Factor the actual simplification out of SimplifyIndirectBrOnSelect and into a new helper function so it can be reused in e.g. an upcoming SimplifySwitchOnSelect.

2011-01-11 12:52:11 +00:00

SimplifyInstructions.cpp

Speed up instsimplify by about 10-15% by not bothering to retry

2011-01-03 10:50:04 +00:00

SSAUpdater.cpp

Generalize LoadAndStorePromoter a bit and switch LICM

2011-01-15 00:12:35 +00:00

UnifyFunctionExitNodes.cpp

…

Utils.cpp

Add a new convenience pass for testing InstructionSimplify. Previously

2010-12-20 20:54:37 +00:00

ValueMapper.cpp

Revamp the ValueMapper interfaces in a couple ways:

2011-01-08 08:15:20 +00:00