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path: root/lib/Transforms/Utils/Local.cpp
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* There are two ways of checking for a given type, for example isa<PointerType>(T)Duncan Sands2010-02-161-2/+2
| | | | | | | | and T->isPointerTy(). Convert most instances of the first form to the second form. Requested by Chris. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96344 91177308-0d34-0410-b5e6-96231b3b80d8
* fix PR6305 by handling BlockAddress in a helper functionChris Lattner2010-02-151-0/+11
| | | | | | | called by jump threading. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96263 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix pr6198 by moving the isSized() check to an outer conditional.Bob Wilson2010-02-011-6/+8
| | | | | | | | The testcase from pr6198 does not crash for me -- I don't know what's up with that -- so I'm not adding it to the tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94984 91177308-0d34-0410-b5e6-96231b3b80d8
* Check alignment of loads when deciding whether it is safe to execute themBob Wilson2010-01-301-7/+14
| | | | | | | | unconditionally. Besides checking the offset, also check that the underlying object is aligned as much as the load itself. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94875 91177308-0d34-0410-b5e6-96231b3b80d8
* Use uint64_t instead of unsigned for offsets and sizes.Bob Wilson2010-01-291-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94835 91177308-0d34-0410-b5e6-96231b3b80d8
* Improve isSafeToLoadUnconditionally to recognize that GEPs with constantBob Wilson2010-01-291-8/+61
| | | | | | | | indices are safe if the result is known to be within the bounds of the underlying object. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94829 91177308-0d34-0410-b5e6-96231b3b80d8
* DbgInfoIntrinsics no longer appear in an instruction's use list; so clean up ↵Victor Hernandez2010-01-211-24/+0
| | | | | | looking for them in use iterations and remove OnlyUsedByDbgInfoIntrinsics() git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94111 91177308-0d34-0410-b5e6-96231b3b80d8
* add a helper function.Chris Lattner2010-01-121-0/+24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93251 91177308-0d34-0410-b5e6-96231b3b80d8
* Nick Lewycky pointed out that this code makes changes unconditionally.Dan Gohman2010-01-051-1/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92739 91177308-0d34-0410-b5e6-96231b3b80d8
* Use do+while instead of while for loops which obviously have aDan Gohman2010-01-051-2/+2
| | | | | | | non-zero trip count. Use SmallVector's pop_back_val(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92734 91177308-0d34-0410-b5e6-96231b3b80d8
* Make RecursivelyDeleteTriviallyDeadInstructions,Dan Gohman2010-01-051-7/+12
| | | | | | | | RecursivelyDeleteDeadPHINode, and DeleteDeadPHIs return a flag indicating whether they made any changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92732 91177308-0d34-0410-b5e6-96231b3b80d8
* Change errs() to dbgs().David Greene2010-01-051-4/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92606 91177308-0d34-0410-b5e6-96231b3b80d8
* prune #includes.Chris Lattner2009-12-291-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92260 91177308-0d34-0410-b5e6-96231b3b80d8
* Move EliminateDuplicatePHINodes() from SimplifyCFG.cpp to Local.cppJim Grosbach2009-12-021-0/+62
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90324 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't trivially delete unused calls to llvm.invariant.start. This allowsDuncan Sands2009-11-111-0/+3
| | | | | | | | | | | | | | llvm.invariant.start to be used without necessarily being paired with a call to llvm.invariant.end. If you run the entire optimization pipeline then such calls are in fact deleted (adce does it), but that's actually a good thing since we probably do want them to be zapped late in the game. There should really be an integration test that checks that the llvm.invariant.start call lasts long enough that all passes that do interesting things with it get to do their stuff before it is deleted. But since no passes do anything interesting with it yet this will have to wait for later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86840 91177308-0d34-0410-b5e6-96231b3b80d8
* move some generally useful functions out of jump threadingChris Lattner2009-11-101-2/+47
| | | | | | | into libanalysis and transformutils. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86735 91177308-0d34-0410-b5e6-96231b3b80d8
* refactor TryToSimplifyUncondBranchFromEmptyBlock out of SimplifyCFG.Chris Lattner2009-11-101-0/+171
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86666 91177308-0d34-0410-b5e6-96231b3b80d8
* remove a isFreeCall check: it is a callinst that can write to memory already.Chris Lattner2009-11-031-3/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85863 91177308-0d34-0410-b5e6-96231b3b80d8
* constant fold indirectbr(blockaddress(%bb)) -> br label %bb.Chris Lattner2009-11-011-9/+46
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85704 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename MallocFreeHelper as MemoryBuiltinsVictor Hernandez2009-10-271-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85286 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename MallocHelper as MallocFreeHelper, since it now also identifies calls ↵Victor Hernandez2009-10-261-1/+1
| | | | | | to free() git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85181 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove FreeInst.Victor Hernandez2009-10-261-3/+2
| | | | | | | | | Remove LowerAllocations pass. Update some more passes to treate free calls just like they were treating FreeInst. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85176 91177308-0d34-0410-b5e6-96231b3b80d8
* Auto-upgrade free instructions to calls to the builtin free function.Victor Hernandez2009-10-241-1/+2
| | | | | | | | | Update all analysis passes and transforms to treat free calls just like FreeInst. Remove RaiseAllocations and all its tests since FreeInst no longer needs to be raised. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84987 91177308-0d34-0410-b5e6-96231b3b80d8
* Preserve ProfileInfo during CodeGenPrepare.Andreas Neustifter2009-09-161-1/+9
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82034 91177308-0d34-0410-b5e6-96231b3b80d8
* Move more code back to 2.5 APIs.Owen Anderson2009-07-301-4/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77635 91177308-0d34-0410-b5e6-96231b3b80d8
* Get rid of the Pass+Context magic.Owen Anderson2009-07-221-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76702 91177308-0d34-0410-b5e6-96231b3b80d8
* This started as a small change, I swear. Unfortunately, lots of things call ↵Owen Anderson2009-07-091-2/+2
| | | | | | the [I|F]CmpInst constructors. Who knew!? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75200 91177308-0d34-0410-b5e6-96231b3b80d8
* "LLVMContext* " --> "LLVMContext *"Owen Anderson2009-07-061-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74878 91177308-0d34-0410-b5e6-96231b3b80d8
* More LLVMContext-ification.Owen Anderson2009-07-051-3/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74807 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unused routines.Devang Patel2009-06-261-41/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74351 91177308-0d34-0410-b5e6-96231b3b80d8
* Generalize instcombine's isSafeToLoadUnconditionally() functionChris Lattner2009-06-161-0/+45
| | | | | | | | | to ignore readonly calls, and factor it out of instcombine so that it can be used by other passes. Patch by Frits van Bommel! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73506 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify code by using SmallVector's pop_back_val() instead ofDan Gohman2009-05-061-2/+1
| | | | | | | separate back() and pop_back() calls. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71089 91177308-0d34-0410-b5e6-96231b3b80d8
* Allow readonly functions to unwind exceptions. TeachDuncan Sands2009-05-061-7/+5
| | | | | | | | | the optimizers about this. For example, a readonly function with no uses cannot be removed unless it is also marked nounwind. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71071 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-apply 70645, converting ScalarEvolution to useDan Gohman2009-05-041-18/+3
| | | | | | | | | | | | | CallbackVH, with fixes. allUsesReplacedWith need to walk the def-use chains and invalidate all users of a value that is replaced. SCEVs of users need to be recalcualted even if the new value is equivalent. Also, make forgetLoopPHIs walk def-use chains, since any SCEV that depends on a PHI should be recalculated when more information about that PHI becomes available. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70927 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r70645 for now; it's causing a variety of regressions.Dan Gohman2009-05-031-3/+18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70661 91177308-0d34-0410-b5e6-96231b3b80d8
* Convert ScalarEvolution to use CallbackVH for its internal map. ThisDan Gohman2009-05-021-18/+3
| | | | | | | | | | makes ScalarEvolution::deleteValueFromRecords, and it's code that subtly needed to be called before ReplaceAllUsesWith, unnecessary. It also makes ValueDeletionListener unnecessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70645 91177308-0d34-0410-b5e6-96231b3b80d8
* Previously, RecursivelyDeleteDeadInstructions provided an optionDan Gohman2009-05-021-5/+42
| | | | | | | | | | | | | | | | | | | of returning a list of pointers to Values that are deleted. This was unsafe, because the pointers in the list are, by nature of what RecursivelyDeleteDeadInstructions does, always dangling. Replace this with a simple callback mechanism. This may eventually be removed if all clients can reasonably be expected to use CallbackVH. Use this to factor out the dead-phi-cycle-elimination code from LSR utility function, and generalize it to use the RecursivelyDeleteTriviallyDeadInstructions utility function. This makes LSR more aggressive about eliminating dead PHI cycles; adjust tests to either be less trivial or to simply expect fewer instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70636 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert my previous change on Local.cpp, instead, fix the bug on scalarrepl.Zhou Sheng2009-03-181-3/+0
| | | | | | | | If the instruction has no users, it is also not only used by debug info and should not be deleted. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67194 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a bug.Zhou Sheng2009-03-181-0/+3
| | | | | | | If I->use_empty(), this method should return false. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67180 91177308-0d34-0410-b5e6-96231b3b80d8
* Add "check/remove dbg var" helper routines.Devang Patel2009-03-061-0/+44
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66223 91177308-0d34-0410-b5e6-96231b3b80d8
* Marking debug info intrinsics as not touching memoryDale Johannesen2009-03-031-0/+3
| | | | | | | | caused them to be considered trivially dead. Fix this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65979 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable scalar replacement of AllocaInst whose one of the user is dbg info.Devang Patel2009-02-101-0/+22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64207 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert rev. 63876. It is causing llvm-gcc bootstrap failure.Devang Patel2009-02-051-17/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63888 91177308-0d34-0410-b5e6-96231b3b80d8
* Ignore dbg intrinsics while propagating conditional expression info.Devang Patel2009-02-051-0/+17
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63876 91177308-0d34-0410-b5e6-96231b3b80d8
* use precise gettersGabor Greif2009-01-301-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63402 91177308-0d34-0410-b5e6-96231b3b80d8
* rewrite RecursivelyDeleteTriviallyDeadInstructions to use a more efficientChris Lattner2008-11-281-16/+26
| | | | | | | formulation that doesn't require set lookups or scanning a set. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60203 91177308-0d34-0410-b5e6-96231b3b80d8
* remove some weirdness that came from the LSR code that hasChris Lattner2008-11-281-8/+1
| | | | | | | | nothing to do with dead instruction elimination. No tests in dejagnu depend on this, so I don't know what it was needed for. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60202 91177308-0d34-0410-b5e6-96231b3b80d8
* enhance RecursivelyDeleteTriviallyDeadInstructions to makeChris Lattner2008-11-271-0/+9
| | | | | | | PHIs dead if they are single-value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60194 91177308-0d34-0410-b5e6-96231b3b80d8
* Enhance RecursivelyDeleteTriviallyDeadInstructions to optionallyChris Lattner2008-11-271-7/+15
| | | | | | | return a list of deleted instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60193 91177308-0d34-0410-b5e6-96231b3b80d8
* remove doConstantPropagation and dceInstruction, they are justChris Lattner2008-11-271-30/+25
| | | | | | | | | | | | wrappers around the interesting code and use an obscure iterator abstraction that dates back many many years. Move EraseDeadInstructions to Transforms/Utils and name it RecursivelyDeleteTriviallyDeadInstructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60191 91177308-0d34-0410-b5e6-96231b3b80d8
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