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* 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
* move MergeBasicBlockIntoOnlyPred to Transforms/Utils.Chris Lattner2008-11-271-0/+33
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60162 91177308-0d34-0410-b5e6-96231b3b80d8
* Use Instruction::eraseFromParent().Dan Gohman2008-06-211-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52606 91177308-0d34-0410-b5e6-96231b3b80d8
* API changes for class Use size reduction, wave 1.Gabor Greif2008-04-061-2/+2
| | | | | | | | | Specifically, introduction of XXX::Create methods for Users that have a potentially variable number of Uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49277 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove attribution from file headers, per discussion on llvmdev.Chris Lattner2007-12-291-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
* dead calls to llvm.stacksave can be deleted, even though theyChris Lattner2007-12-291-1/+10
| | | | | | | have potential side-effects. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45392 91177308-0d34-0410-b5e6-96231b3b80d8
* Move the GET_SIDE_EFFECT_INFO logic from isInstructionTriviallyDeadDan Gohman2007-07-261-7/+0
| | | | | | | | to Instruction::mayWriteToMemory, fixing a FIXME, and helping various places that call mayWriteToMemory directly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40533 91177308-0d34-0410-b5e6-96231b3b80d8
* It's not necessary to do rounding for alloca operations when the requestedDan Gohman2007-07-181-0/+200
alignment is equal to the stack alignment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
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