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bc99be10b8
llvm-6502/include/llvm/Analysis
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Chris Lattner bc99be10b8 Teach GVN to invalidate some memdep information when it does an RAUW 
of a pointer.  This allows is to catch more equivalencies.  For example,
the type_lists_compatible_p function used to require two iterations of
the gvn pass (!) to delete its 18 redundant loads because the first pass
would CSE all the addressing computation cruft, which would unblock the
second memdep/gvn passes from recognizing them.  This change allows
memdep/gvn to catch all 18 when run just once on the function (as is 
typical :) instead of just 3.

On all of 403.gcc, this bumps up the # reundandancies found from:

     63 gvn    - Number of instructions PRE'd
 153991 gvn    - Number of instructions deleted
  50069 gvn    - Number of loads deleted
to:
     63 gvn    - Number of instructions PRE'd
 154137 gvn    - Number of instructions deleted
  50185 gvn    - Number of loads deleted

+120 loads deleted isn't bad.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60799 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-09 22:06:23 +00:00
..
AliasAnalysis.h Update comments. There is no getArgumentAccesses. 2008-12-05 05:35:21 +00:00
AliasSetTracker.h
CallGraph.h Teach internalize to preserve the callgraph. 2008-10-03 07:36:09 +00:00
CFGPrinter.h
ConstantFolding.h
ConstantsScanner.h
DebugInfo.h Move getCastToEmpty out of DIDescriptor into DIFactory. It is an 2008-11-10 04:10:34 +00:00
DominatorInternals.h
Dominators.h Tidy up several unbeseeming casts from pointer to intptr_t. 2008-09-04 17:05:41 +00:00
EscapeAnalysis.h Trim #includes. 2008-10-16 20:18:31 +00:00
FindUsedTypes.h Tidy up several unbeseeming casts from pointer to intptr_t. 2008-09-04 17:05:41 +00:00
Interval.h
IntervalIterator.h
IntervalPartition.h Tidy up several unbeseeming casts from pointer to intptr_t. 2008-09-04 17:05:41 +00:00
LibCallAliasAnalysis.h
LibCallSemantics.h
LoopInfo.h Use empty() instead of begin() == end(). 2008-08-14 18:13:49 +00:00
LoopPass.h Fix typo. 2008-11-26 18:13:11 +00:00
LoopVR.h
MemoryDependenceAnalysis.h Teach GVN to invalidate some memdep information when it does an RAUW 2008-12-09 22:06:23 +00:00
Passes.h Remove GCSE, ValueNumbering, and LoadValueNumbering. These have been deprecated for almost a year; it's finally time for them to go away. 2008-08-15 21:31:02 +00:00
PostDominators.h Tidy up several unbeseeming casts from pointer to intptr_t. 2008-09-04 17:05:41 +00:00
ProfileInfo.h
ProfileInfoLoader.h
ProfileInfoTypes.h
ScalarEvolution.h Add a new SCEV representing signed division. 2008-12-02 08:05:48 +00:00
ScalarEvolutionExpander.h Add a new SCEV representing signed division. 2008-12-02 08:05:48 +00:00
ScalarEvolutionExpressions.h Add a new SCEV representing signed division. 2008-12-02 08:05:48 +00:00
SparsePropagation.h "This patch adds a virtual call to AbstractLatticeFunction to derive a 2008-08-09 17:23:35 +00:00
Trace.h
ValueTracking.h
Verifier.h