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* Simplify the logic of getting hold of a PHI predecessor block.Gabor Greif2009-01-231-2/+1
| | | | | | | | | There is now a direct way from value-use-iterator to incoming block in PHINode's API. This way we avoid the iterator->index->iterator trip, and especially the costly getOperandNo() invocation. Additionally there is now an assertion that the iterator really refers to one of the PHI's Uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62869 91177308-0d34-0410-b5e6-96231b3b80d8
* add a new insertAfter method, patch by Tom Jablin!Chris Lattner2009-01-131-0/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62158 91177308-0d34-0410-b5e6-96231b3b80d8
* improve const correctness.Chris Lattner2008-11-271-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60168 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix an obvious copy/pasto.Nick Lewycky2008-10-271-4/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58231 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix Instruction::isIdenticalTo and isSameOperationAs to recognizeDan Gohman2008-10-161-6/+57
| | | | | | | | additional information in Loads, Stores, Calls, Invokes, InsertValueInsts, and ExtractValueInsts. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57620 91177308-0d34-0410-b5e6-96231b3b80d8
* Correct the name of isTrapping in comments.Dan Gohman2008-10-151-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57606 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable first-class aggregates support.Dan Gohman2008-07-231-1/+0
| | | | | | | | | | | | | Remove the GetResultInst instruction. It is still accepted in LLVM assembly and bitcode, where it is now auto-upgraded to ExtractValueInst. Also, remove support for return instructions with multiple values. These are auto-upgraded to use InsertValueInst instructions. The IRBuilder still accepts multiple-value returns, and auto-upgrades them to InsertValueInst instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53941 91177308-0d34-0410-b5e6-96231b3b80d8
* Add an insertBefore method for attaching previously unattached instructions,Owen Anderson2008-06-171-0/+6
| | | | | | | such as those created by clone(), to a basic block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52424 91177308-0d34-0410-b5e6-96231b3b80d8
* Let Instruction::getOpcodeName() return something useful for the newMatthijs Kooijman2008-05-301-0/+2
| | | | | | | insertvalue / extractvalue instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51766 91177308-0d34-0410-b5e6-96231b3b80d8
* Add two new instructions to the llvm IR, vicmp and vfcmp. see updated LangRefNate Begeman2008-05-121-0/+2
| | | | | | | for details. CodeGen support coming in a follow up patch git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50985 91177308-0d34-0410-b5e6-96231b3b80d8
* conservatively say that volatile stores read memory.Chris Lattner2008-05-081-2/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50872 91177308-0d34-0410-b5e6-96231b3b80d8
* store can't read from memory.Chris Lattner2008-05-081-1/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50869 91177308-0d34-0410-b5e6-96231b3b80d8
* add a new Instruction::mayReadFromMemory predicate, makeChris Lattner2008-05-081-2/+19
| | | | | | | Instruction::mayWriteToMemory stronger for invokes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50858 91177308-0d34-0410-b5e6-96231b3b80d8
* add a handy helper method to instruction, useful for determiningChris Lattner2008-04-201-0/+23
| | | | | | | | whether it is used outside of some block. This can be used to see if there are any non-local references, for example. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50004 91177308-0d34-0410-b5e6-96231b3b80d8
* VAArg may trap.Dan Gohman2008-04-141-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49646 91177308-0d34-0410-b5e6-96231b3b80d8
* print getresult instruction.Devang Patel2008-02-211-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47461 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
* Revert r44626, which turned off the use of readonlyDuncan Sands2007-12-121-3/+0
| | | | | | | | | | | and readnone for functions with bodies because it broke llvm-gcc-4.2 bootstrap. It turns out that, because of LLVM's array_ref hack, gcc was computing pure/const attributes wrong (now fixed by turning off the gcc ipa-pure-const pass). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44937 91177308-0d34-0410-b5e6-96231b3b80d8
* Reverting dtor devirtualization patch.Gordon Henriksen2007-12-101-2/+2
| | | | | | | _sabre_: it has a major problem: by the time ~Value is run, all of the "parts" of the derived classes have been destroyed _sabre_: the vtable lives to fight another day git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44760 91177308-0d34-0410-b5e6-96231b3b80d8
* Devirtualizing Value destructor (PR889). Patch by Pawel Kunio!Gordon Henriksen2007-12-091-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44747 91177308-0d34-0410-b5e6-96231b3b80d8
* Commit 44487 broke bootstrap of llvm-gcc-4.2. It isDuncan Sands2007-12-051-0/+3
| | | | | | | | not yet clear why, but in the meantime work around the problem by making less use of readnone/readonly info. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44626 91177308-0d34-0410-b5e6-96231b3b80d8
* Rather than having special rules like "intrinsics cannotDuncan Sands2007-12-031-16/+3
| | | | | | | | | | throw exceptions", just mark intrinsics with the nounwind attribute. Likewise, mark intrinsics as readnone/readonly and get rid of special aliasing logic (which didn't use anything more than this anyway). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44544 91177308-0d34-0410-b5e6-96231b3b80d8
* Move the GET_SIDE_EFFECT_INFO logic from isInstructionTriviallyDeadDan Gohman2007-07-261-4/+12
| | | | | | | | 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/+277
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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