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2010-08-03Introduce a symbolic constant for ~0u for use with AliasAnalysis.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110091 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03Add a convenient form of AliasAnalysis::alias for the case where the sizesDan Gohman
are unknown. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110090 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-02Make SCEVUnknown a CallbackVH, so that it can be notified directlyDan Gohman
of Value deletions and RAUWs, instead of relying on ScalarEvolution's Scalars map being notified, as that's complicated at best, and insufficient in general. This means SCEVUnknown needs a non-trivial destructor, so introduce a mechanism to allow ScalarEvolution to locate all the SCEVUnknowns. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110086 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-02Sketch up a preliminary Type-Based Alias Analysis implementation.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110077 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-02Add a lint check for indirectbr with no successors.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110074 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-02Add explicit constructors. Patch by Renato Golin.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110072 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-02Fix namespace polution.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110056 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-02Prefix `next' iterator operation with `llvm::'.Oscar Fuentes
Fixes potential ambiguity problems on VS 2010. Patch by nobled! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110029 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-30Add an initial implementation of PHI translation for LazyValueInfo. This ↵Owen Anderson
involves rolling back some of my earlier data structure improvements until I can ensure that there are no iterator invalidation problems. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109935 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-30Revert my last two patches to LVI, which recent changes have exposed a ↵Owen Anderson
miscompilation in. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109889 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-29Speculatively revert r109705 since it seems to be causing some build botEric Christopher
angst. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109718 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-29Factor out some of the code for updating old SCEVUnknown values, andDan Gohman
extend it to handle the case where multiple RAUWs affect a single SCEVUnknown. Add a ScalarEvolution unittest to test for this situation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109705 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28Pass the queried value by argument rather than in a member, in preparation ↵Owen Anderson
for supporting PHI translation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109701 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28Get rid of LVIQuery as a distinct data structure, so that we don't have to ↵Owen Anderson
initialize a new set of maps on every query. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109679 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28RegionInfo: Make sure to free cached nodes; Tobias, please check!Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109650 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28simplifyGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109585 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28use Value* constructor of CallSite to create potentially improper site, and ↵Gabor Greif
test that git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109580 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28use Value* constructor of CallSite to create potentially improper siteGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109579 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28simplifyGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109578 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28simplifyGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109577 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28Make SCEVCallbackVH::allUsesReplacedWith update the old SCEVUnknownDan Gohman
object, as it may still be referenced by SCEVs not cleaned up by the use list traversal. Also, in ScalarEvolution::forgetValue, only check for a SCEVUnknown object for the original value, not for any value in the use list, because other SCEVUnknown values aren't necessary obsolete at that point. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109570 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28Make SCEVCallbackVH::allUsesReplacedWith unconditionally deleteDan Gohman
the old value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109567 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27Rearrange several datastructures in LazyValueInfo to improve compile time.Owen Anderson
This is still not perfect, but better than it was before. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109563 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27reintroduce original (asserting) semantics of CallSite(Instruction *II)Gabor Greif
add instead a CallSite(Value* V) constructor that is consistent with ImmutableCallSize and use that one in client code git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109553 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27recommit simplification (originally r109504, backed out in r109508) now that ↵Gabor Greif
problem in CallSiteBase is fixed git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109547 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27back out r109504, breaks the botsGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109508 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27simplifyGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109504 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27use ImmutableCallSite for const-corrgoodnessGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109503 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27RegionInfo: Add getMaxRegionExit()Tobias Grosser
getMaxRegionExit returns the exit of the maximal refined region starting at a specific basic block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109496 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27Add function to query RegionInfo about loops.Tobias Grosser
* contains(Loop), * getOutermostLoop() * Improve getNameStr() to return a sensible name, if basic blocks are not named. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109490 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-26Add an initial implementation of LazyValueInfo updating for JumpThreading. ↵Owen Anderson
Disabled for now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109424 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-26Fix SCEVExpander::visitAddRecExpr so that it remembers the induction variableDan Gohman
it inserted rather than using LoopInfo::getCanonicalInductionVariable to rediscover it, since that doesn't work on non-canonical loops. This fixes infinite recurrsion on such loops; PR7562. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109419 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-26Use DominatorTree::properlyDominates instead of dominates with anDan Gohman
explicit inequality check. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109398 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-23Eliminate getCanonicalInductionVariableIncrement's last user andDan Gohman
eliminate it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109270 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-23Simplify this code; it can use the regular CFG utlities rather thanDan Gohman
the BlockTraits abstractions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109268 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-23Micro-optimize SCEVComplexityCompare.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109267 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-23Add a const qualifier.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109266 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-22use cascading operator-> featureGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109104 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-22mass elimination of reliance on automatic iterator dereferencingGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109103 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-22use -> instead of (*).Gabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109094 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-22cache dereferenced iteratorGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109093 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-22Add new RegionInfo pass.Tobias Grosser
The RegionInfo pass detects single entry single exit regions in a function, where a region is defined as any subgraph that is connected to the remaining graph at only two spots. Furthermore an hierarchical region tree is built. Use it by calling "opt -regions analyze" or "opt -view-regions". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109089 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Make NamedMDNode not be a subclass of Value, and simplify the interfaceDan Gohman
for creating and populating NamedMDNodes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109061 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Add INSTANTIATE_AG_PASS, which combines RegisterPass<> with ↵Owen Anderson
RegisterAnalysisGroup<> for pass registration. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109058 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Fix batch of converting RegisterPass<> to INTIALIZE_PASS().Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109045 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21tidy up.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109038 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21Disallow null as a named metadata operand.Dan Gohman
Make MDNode::destroy private. Fix the one thing that used MDNode::destroy, outside of MDNode itself. One should never delete or destroy an MDNode explicitly. MDNodes implicitly go away when there are no references to them (implementation details aside). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109028 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Fix SCEV denormalization of expressions where the exit value fromDan Gohman
one loop is involved in the increment of an addrec for another loop. This fixes rdar://8168938. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108863 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Add a fast path for x - x.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108855 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-20Simplify this code; LoopInfo::getCanonicalInductionVariable will onlyDan Gohman
find integer induction variables. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108853 91177308-0d34-0410-b5e6-96231b3b80d8
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