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path: root/lib/Transforms/Utils/Local.cpp
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2010-11-17Have RemovePredecessorAndSimplify you SimplifyInstructionDuncan Sands
rather than hasConstantValue. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119457 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-14Teach SimplifyCFG how to simplify indirectbr instructions.Dan Gohman
- Eliminate redundant successors. - Convert an indirectbr with one successor into a direct branch. Also, generalize SimplifyCFG to be able to be run on a function entry block. It knows quite a few simplifications which are applicable to the entry block, and it only needs a few checks to avoid trouble with the entry block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111060 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-15make various clients of ReplaceAndSimplifyAllUses tolerate Chris Lattner
it *changing* the things it replaces, not just causing them to drop to null. There is no functionality change yet, but this is required for a subsequent patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108414 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-12cache dereferenced iteratorsGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108132 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-28Move FindAvailableLoadedValue isSafeToLoadUnconditionally out ofDan Gohman
lib/Transforms/Utils and into lib/Analysis so that Analysis passes can use them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104949 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16There are two ways of checking for a given type, for example isa<PointerType>(T)Duncan Sands
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
2010-02-15fix PR6305 by handling BlockAddress in a helper functionChris Lattner
called by jump threading. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96263 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-01Fix pr6198 by moving the isSized() check to an outer conditional.Bob Wilson
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
2010-01-30Check alignment of loads when deciding whether it is safe to execute themBob Wilson
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
2010-01-29Use uint64_t instead of unsigned for offsets and sizes.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94835 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-29Improve isSafeToLoadUnconditionally to recognize that GEPs with constantBob Wilson
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
2010-01-21DbgInfoIntrinsics no longer appear in an instruction's use list; so clean up ↵Victor Hernandez
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
2010-01-12add a helper function.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93251 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Nick Lewycky pointed out that this code makes changes unconditionally.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92739 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Use do+while instead of while for loops which obviously have aDan Gohman
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
2010-01-05Make RecursivelyDeleteTriviallyDeadInstructions,Dan Gohman
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
2010-01-05Change errs() to dbgs().David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92606 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-29prune #includes.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92260 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02Move EliminateDuplicatePHINodes() from SimplifyCFG.cpp to Local.cppJim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90324 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-11Don't trivially delete unused calls to llvm.invariant.start. This allowsDuncan Sands
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
2009-11-10move some generally useful functions out of jump threadingChris Lattner
into libanalysis and transformutils. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86735 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-10refactor TryToSimplifyUncondBranchFromEmptyBlock out of SimplifyCFG.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86666 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-03remove a isFreeCall check: it is a callinst that can write to memory already.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85863 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01constant fold indirectbr(blockaddress(%bb)) -> br label %bb.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85704 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-27Rename MallocFreeHelper as MemoryBuiltinsVictor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85286 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Rename MallocHelper as MallocFreeHelper, since it now also identifies calls ↵Victor Hernandez
to free() git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85181 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26Remove FreeInst.Victor Hernandez
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
2009-10-24Auto-upgrade free instructions to calls to the builtin free function.Victor Hernandez
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
2009-09-16Preserve ProfileInfo during CodeGenPrepare.Andreas Neustifter
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82034 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-30Move more code back to 2.5 APIs.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77635 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Get rid of the Pass+Context magic.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76702 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-09This started as a small change, I swear. Unfortunately, lots of things call ↵Owen Anderson
the [I|F]CmpInst constructors. Who knew!? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75200 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-06"LLVMContext* " --> "LLVMContext *"Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74878 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-05More LLVMContext-ification.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74807 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-26Remove unused routines.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74351 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-16Generalize instcombine's isSafeToLoadUnconditionally() functionChris Lattner
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
2009-05-06Simplify code by using SmallVector's pop_back_val() instead ofDan Gohman
separate back() and pop_back() calls. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71089 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-06Allow readonly functions to unwind exceptions. TeachDuncan Sands
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
2009-05-04Re-apply 70645, converting ScalarEvolution to useDan Gohman
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
2009-05-03Revert r70645 for now; it's causing a variety of regressions.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70661 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-02Convert ScalarEvolution to use CallbackVH for its internal map. ThisDan Gohman
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
2009-05-02Previously, RecursivelyDeleteDeadInstructions provided an optionDan Gohman
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
2009-03-18Revert my previous change on Local.cpp, instead, fix the bug on scalarrepl.Zhou Sheng
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
2009-03-18Fix a bug.Zhou Sheng
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
2009-03-06Add "check/remove dbg var" helper routines.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66223 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03Marking debug info intrinsics as not touching memoryDale Johannesen
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
2009-02-10Enable scalar replacement of AllocaInst whose one of the user is dbg info.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64207 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-05Revert rev. 63876. It is causing llvm-gcc bootstrap failure.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63888 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-05Ignore dbg intrinsics while propagating conditional expression info.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63876 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-30use precise gettersGabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63402 91177308-0d34-0410-b5e6-96231b3b80d8
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