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path: root/lib/Analysis/LazyValueInfo.cpp
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* [Modules] Fix potential ODR violations by sinking the DEBUG_TYPEChandler Carruth2014-04-22
| | | | | | | | | | definition below all the header #include lines, lib/Analysis/... edition. This one has a bit extra as there were *other* #define's before #include lines in addition to DEBUG_TYPE. I've sunk all of them as a block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206843 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++11] More 'nullptr' conversion. In some cases just using a boolean check ↵Craig Topper2014-04-15
| | | | | | instead of comparing to nullptr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206243 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++11] Add 'override' keyword to virtual methods that override their base ↵Craig Topper2014-03-05
| | | | | | class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202945 91177308-0d34-0410-b5e6-96231b3b80d8
* [Modules] Move the ConstantRange class into the IR library. This isChandler Carruth2014-03-04
| | | | | | | | | | a bit surprising, as the class is almost entirely abstracted away from any particular IR, however it encodes the comparsion predicates which mutate ranges as ICmp predicate codes. This is reasonable as they're used for both instructions and constants. Thus, it belongs in the IR library with instructions and constants. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202838 91177308-0d34-0410-b5e6-96231b3b80d8
* [Modules] Move CFG.h to the IR library as it defines graph traits overChandler Carruth2014-03-04
| | | | | | IR types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202827 91177308-0d34-0410-b5e6-96231b3b80d8
* [Modules] Move ValueHandle into the IR library where Value itself lives.Chandler Carruth2014-03-04
| | | | | | | | | | | Move the test for this class into the IR unittests as well. This uncovers that ValueMap too is in the IR library. Ironically, the unittest for ValueMap is useless in the Support library (honestly, so was the ValueHandle test) and so it already lives in the IR unittests. Mmmm, tasty layering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202821 91177308-0d34-0410-b5e6-96231b3b80d8
* [Modules] Move the LLVM IR pattern match header into the IR library, itChandler Carruth2014-03-04
| | | | | | obviously is coupled to the IR. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202818 91177308-0d34-0410-b5e6-96231b3b80d8
* Make DataLayout a plain object, not a pass.Rafael Espindola2014-02-25
| | | | | | | Instead, have a DataLayoutPass that holds one. This will allow parts of LLVM don't don't handle passes to also use DataLayout. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202168 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename some member variables from TD to DL.Rafael Espindola2014-02-18
| | | | | | TargetData was renamed DataLayout back in r165242. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201581 91177308-0d34-0410-b5e6-96231b3b80d8
* Use SmallVectorImpl::iterator/const_iterator instead of SmallVector to avoid ↵Craig Topper2013-07-04
| | | | | | specifying the vector size. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185606 91177308-0d34-0410-b5e6-96231b3b80d8
* Move isKnownNonNull out of AliasAnalysis.h and into ValueTracking.cpp sinceDan Gohman2013-01-31
| | | | | | | | it isn't really an AliasAnalysis concept, and ValueTracking has similar things that it could plausibly share code with some day. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174027 91177308-0d34-0410-b5e6-96231b3b80d8
* Move all of the header files which are involved in modelling the LLVM IRChandler Carruth2013-01-02
| | | | | | | | | | | | | | | | | | | | | into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8
* Use the new script to sort the includes of every file under lib.Chandler Carruth2012-12-03
| | | | | | | | | | | | | | | | | Sooooo many of these had incorrect or strange main module includes. I have manually inspected all of these, and fixed the main module include to be the nearest plausible thing I could find. If you own or care about any of these source files, I encourage you to take some time and check that these edits were sensible. I can't have broken anything (I strictly added headers, and reordered them, never removed), but they may not be the headers you'd really like to identify as containing the API being implemented. Many forward declarations and missing includes were added to a header files to allow them to parse cleanly when included first. The main module rule does in fact have its merits. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169131 91177308-0d34-0410-b5e6-96231b3b80d8
* Hoist out some work done inside a loop doing a linear scan over allNick Lewycky2012-10-26
| | | | | | | | | | | | | instructions in a block. GetUnderlyingObject is more expensive than it looks as it can, for instance, call SimplifyInstruction. This might have some behavioural changes in odd corner cases, but only because of some strange artefacts of the original implementation. If you were relying on those, we can fix that by replacing this with a smarter algorithm. Change passes the existing tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166754 91177308-0d34-0410-b5e6-96231b3b80d8
* Move TargetData to DataLayout.Micah Villmow2012-10-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165402 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert 'Fix a typo 'iff' => 'if''. iff is an abreviation of if and only if. ↵Sylvestre Ledru2012-09-27
| | | | | | See: http://en.wikipedia.org/wiki/If_and_only_if Commit 164767 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164768 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a typo 'iff' => 'if'Sylvestre Ledru2012-09-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164767 91177308-0d34-0410-b5e6-96231b3b80d8
* JumpThreading: when default destination is the destination of some cases in aManman Ren2012-09-05
| | | | | | | | | | switch, make sure we include the value for the cases when calculating edge value from switch to the default destination. rdar://12241132 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163270 91177308-0d34-0410-b5e6-96231b3b80d8
* Reduce duplicated hash map lookups.Benjamin Kramer2012-08-22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162362 91177308-0d34-0410-b5e6-96231b3b80d8
* make LazyValueInfo analyze the default case of switch statements (we know ↵Nuno Lopes2012-06-28
| | | | | | that in the default branch the value cannot be any of the switch cases) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159353 91177308-0d34-0410-b5e6-96231b3b80d8
* make LVI::getEdgeValue() always intersect the constraints of the edge with ↵Nuno Lopes2012-06-28
| | | | | | the range of the block. Previously it was only performing the intersection for a few cases, thus losing precision git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159320 91177308-0d34-0410-b5e6-96231b3b80d8
* allow LazyValueInfo::getEdgeValue() to reason about multiple edges from the ↵Nuno Lopes2012-05-18
| | | | | | same switch instruction by doing union of ranges (which may still be conservative, but it's more aggressive than before) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157071 91177308-0d34-0410-b5e6-96231b3b80d8
* minor simplification in the call to ConstantRange constructorNuno Lopes2012-05-17
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157024 91177308-0d34-0410-b5e6-96231b3b80d8
* llvm::SwitchInstStepan Dyatkovskiy2012-03-11
| | | | | | | | | Renamed methods caseBegin, caseEnd and caseDefault with case_begin, case_end, and case_default. Added some notes relative to case iterators. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152532 91177308-0d34-0410-b5e6-96231b3b80d8
* Taken into account Duncan's comments for r149481 dated by 2nd Feb 2012:Stepan Dyatkovskiy2012-03-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20120130/136146.html Implemented CaseIterator and it solves almost all described issues: we don't need to mix operand/case/successor indexing anymore. Base iterator class is implemented as a template since it may be initialized either from "const SwitchInst*" or from "SwitchInst*". ConstCaseIt is just a read-only iterator. CaseIt is read-write iterator; it allows to change case successor and case value. Usage of iterator allows totally remove resolveXXXX methods. All indexing convertions done automatically inside the iterator's getters. Main way of iterator usage looks like this: SwitchInst *SI = ... // intialize it somehow for (SwitchInst::CaseIt i = SI->caseBegin(), e = SI->caseEnd(); i != e; ++i) { BasicBlock *BB = i.getCaseSuccessor(); ConstantInt *V = i.getCaseValue(); // Do something. } If you want to convert case number to TerminatorInst successor index, just use getSuccessorIndex iterator's method. If you want initialize iterator from TerminatorInst successor index, use CaseIt::fromSuccessorIndex(...) method. There are also related changes in llvm-clients: klee and clang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152297 91177308-0d34-0410-b5e6-96231b3b80d8
* LVI: Recognize the form instcombine canonicalizes range checks into when ↵Benjamin Kramer2012-03-02
| | | | | | | | | | forming constant ranges. This could probably be made a lot smarter, but this is a common case and doesn't require LVI to scan a lot of code. With this change CVP can optimize away the "shift == 0" case in Hashing.h that only gets hit when "shift" is in a range not containing 0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151919 91177308-0d34-0410-b5e6-96231b3b80d8
* SwitchInst refactoring.Stepan Dyatkovskiy2012-02-01
| | | | | | | | | | | | | | | | | | | | The purpose of refactoring is to hide operand roles from SwitchInst user (programmer). If you want to play with operands directly, probably you will need lower level methods than SwitchInst ones (TerminatorInst or may be User). After this patch we can reorganize SwitchInst operands and successors as we want. What was done: 1. Changed semantics of index inside the getCaseValue method: getCaseValue(0) means "get first case", not a condition. Use getCondition() if you want to resolve the condition. I propose don't mix SwitchInst case indexing with low level indexing (TI successors indexing, User's operands indexing), since it may be dangerous. 2. By the same reason findCaseValue(ConstantInt*) returns actual number of case value. 0 means first case, not default. If there is no case with given value, ErrorIndex will returned. 3. Added getCaseSuccessor method. I propose to avoid usage of TerminatorInst::getSuccessor if you want to resolve case successor BB. Use getCaseSuccessor instead, since internal SwitchInst organization of operands/successors is hidden and may be changed in any moment. 4. Added resolveSuccessorIndex and resolveCaseIndex. The main purpose of these methods is to see how case successors are really mapped in TerminatorInst. 4.1 "resolveSuccessorIndex" was created if you need to level down from SwitchInst to TerminatorInst. It returns TerminatorInst's successor index for given case successor. 4.2 "resolveCaseIndex" converts low level successors index to case index that curresponds to the given successor. Note: There are also related compatability fix patches for dragonegg, klee, llvm-gcc-4.0, llvm-gcc-4.2, safecode, clang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149481 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove dead code.Bill Wendling2012-01-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148384 91177308-0d34-0410-b5e6-96231b3b80d8
* A DenseMap of a std::map isn't a very good idea because the "grow()" method willBill Wendling2012-01-12
| | | | | | | | need to make a deep copy of each of the std::maps. Use a std::map of the std::map instead. This improves the compile time of sqlite3 by ~2%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148003 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r147978. A DenseMap's iterators may become invalidated here.Bill Wendling2012-01-11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147980 91177308-0d34-0410-b5e6-96231b3b80d8
* Use a DenseMap.Bill Wendling2012-01-11
| | | | | | | This appears to improve sqlite3's compile time by ~2%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147978 91177308-0d34-0410-b5e6-96231b3b80d8
* Clear the new cache.Benjamin Kramer2011-12-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145771 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a "seen blocks" cache to LVI to avoid a linear scan over the whole cache ↵Benjamin Kramer2011-12-03
| | | | | | | | | just to remove no blocks from the maps. -15% on ARMDisassembler.cpp (Release build). It's not that great to add another layer of caching to the caching-heavy LVI but I don't see a better way. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145770 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a few more places where TargetData/TargetLibraryInfo is not being passed.Chad Rosier2011-12-02
| | | | | | Add FIXMEs to places that are non-trivial to fix. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145661 91177308-0d34-0410-b5e6-96231b3b80d8
* land David Blaikie's patch to de-constify Type, with a few tweaks.Chris Lattner2011-07-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135375 91177308-0d34-0410-b5e6-96231b3b80d8
* llvm.memcpy.* has two distinct associated address spaces; the source address ↵Eli Friedman2011-05-31
| | | | | | space, and the destination address space. Fix up the interface on MemIntrinsic and MemTransferInst to make this clear, and fix InstructionDereferencesPointer in LazyValueInfo.cpp to use the interface properly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132356 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unused STL header includes.Jay Foad2011-04-23
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130068 91177308-0d34-0410-b5e6-96231b3b80d8
* Mark some functions as used which are used within debug-only code. ThisChandler Carruth2011-04-18
| | | | | | silences Clang's -Wunused-function when building in release mode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129709 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach LazyValueInfo that allocas aren't NULL. Over all of llvm-test, this savesNick Lewycky2011-01-15
| | | | | | | | | | | | half a million non-local queries, each of which would otherwise have triggered a linear scan over a basic block. Also fix a fixme for memory intrinsics which dereference pointers. With this, we prove that a pointer is non-null because it was dereferenced by an intrinsic 112 times in llvm-test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123533 91177308-0d34-0410-b5e6-96231b3b80d8
* Reorder, rename, and document some members to make this easier to follow.Owen Anderson2011-01-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122929 91177308-0d34-0410-b5e6-96231b3b80d8
* When computing the value on an edge, in certain cases LVI would fail to ↵Owen Anderson2011-01-05
| | | | | | | | | compute the value range in the predecessor block, leading to an incorrect conclusion for the edge value. Found by inspection. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122908 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-convert several of LazyValueInfo's internal maps to Dense{Map|Set}, and ↵Owen Anderson2011-01-05
| | | | | | | | | | fix the issue in hasBlockValue() that was causing iterator invalidations. Many thanks to Dimitry Andric for tracking down those invalidations! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122906 91177308-0d34-0410-b5e6-96231b3b80d8
* Speculatively revert the use of DenseMap in LazyValueInfo, which may be ↵Owen Anderson2010-12-20
| | | | | | causing Linux self-host failures. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122291 91177308-0d34-0410-b5e6-96231b3b80d8
* Attempt to appease the DragonEgg buildbots.Owen Anderson2010-12-20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122288 91177308-0d34-0410-b5e6-96231b3b80d8
* Convert one of LVI's primary maps to a DenseMap, now that we know are more ↵Owen Anderson2010-12-20
| | | | | | assured of iterator stability. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122273 91177308-0d34-0410-b5e6-96231b3b80d8
* More LVI cleanups, including trying to simplify the process of maintaining ↵Owen Anderson2010-12-20
| | | | | | the OverDefinedCache. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122256 91177308-0d34-0410-b5e6-96231b3b80d8
* Reuse the reference into the LVI cache throughout the solver subsystem. ↵Owen Anderson2010-12-20
| | | | | | | | | This is much easier to verify as being safe thanks its recent de-recursivization. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122254 91177308-0d34-0410-b5e6-96231b3b80d8
* Make LazyValueInfo non-recursive.Nick Lewycky2010-12-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122120 91177308-0d34-0410-b5e6-96231b3b80d8
* Move Value::getUnderlyingObject to be a standaloneDan Gohman2010-12-15
| | | | | | | | function so that it can live in Analysis instead of VMCore. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121885 91177308-0d34-0410-b5e6-96231b3b80d8
* Clean up some of LVI:Nick Lewycky2010-12-15
| | | | | | | | | * mergeIn now uses constant folding for constants that are provably not-equal. * sink some sanity checks from the get*() methods into the mark*() methods, to ensure that we never have a constant/notconstant ConstantInt * some textual cleanups, whitespace changes, removing "else" after return, that sort of thing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121877 91177308-0d34-0410-b5e6-96231b3b80d8
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