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* Add support for targets (like Alpha) that have terminator instructions whichChris Lattner2006-01-041-5/+41
| | | | | | | | | | use virtual registers. We now allow the first instruction in a block of terminators to use virtual registers, and update phi elimination to correctly update livevar when eliminating phi's. This fixes a problem on a testcase Andrew sent me. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25083 91177308-0d34-0410-b5e6-96231b3b80d8
* Add an assertion, update DefInst even though no one uses it (dangling pointersChris Lattner2006-01-041-0/+4
| | | | | | | don't help anyone) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25081 91177308-0d34-0410-b5e6-96231b3b80d8
* clean up this code a bit, no functionality changeChris Lattner2005-10-031-101/+116
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23609 91177308-0d34-0410-b5e6-96231b3b80d8
* Break the body of the loop out into a new methodChris Lattner2005-10-031-144/+155
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23606 91177308-0d34-0410-b5e6-96231b3b80d8
* adjust to new live variables interfaceChris Lattner2005-08-231-11/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22992 91177308-0d34-0410-b5e6-96231b3b80d8
* * Order #includes alphabeticallyMisha Brukman2005-05-051-4/+1
| | | | | | | * Remove commented-out debug printouts git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21707 91177308-0d34-0410-b5e6-96231b3b80d8
* Convert tabs to spacesMisha Brukman2005-04-221-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21439 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove trailing whitespaceMisha Brukman2005-04-211-14/+14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21420 91177308-0d34-0410-b5e6-96231b3b80d8
* Changes For Bug 352Reid Spencer2004-09-011-2/+2
| | | | | | | | | Move include/Config and include/Support into include/llvm/Config, include/llvm/ADT and include/llvm/Support. From here on out, all LLVM public header files must be under include/llvm/. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16137 91177308-0d34-0410-b5e6-96231b3b80d8
* Update live intervals more accurately for PHI elim. This slightly reducesChris Lattner2004-07-231-10/+6
| | | | | | | the live intervals for some registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15125 91177308-0d34-0410-b5e6-96231b3b80d8
* costmetic changesChris Lattner2004-07-221-14/+14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15118 91177308-0d34-0410-b5e6-96231b3b80d8
* There is no need to store the MBB along with the MI any more, we can nowChris Lattner2004-07-191-1/+1
| | | | | | | ask instructions for their parent. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14998 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify the interface to LiveVariables::addVirtualRegister(Killed|Dead)Chris Lattner2004-07-191-4/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14997 91177308-0d34-0410-b5e6-96231b3b80d8
* Start using MBB numbers directly instead of going through the live variablesChris Lattner2004-07-011-1/+1
| | | | | | | map. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14518 91177308-0d34-0410-b5e6-96231b3b80d8
* Adjust to new TargetMachine interfaceChris Lattner2004-06-021-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13956 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a really nasty bug from my changes on Monday to PHIElim. These changesChris Lattner2004-05-121-11/+19
| | | | | | | | | broke obsequi and a lot of other things. It all boiled down to MBB being overloaded in an inner scope and me confusing it with the one in the outer scope. Ugh! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13517 91177308-0d34-0410-b5e6-96231b3b80d8
* Switch this from using an std::map to using a DenseMap. This speeds upChris Lattner2004-05-101-6/+5
| | | | | | | phi-elimination from 0.6 to 0.54s on kc++. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13454 91177308-0d34-0410-b5e6-96231b3b80d8
* Use a new VRegPHIUseCount to compute uses of PHI values by other phi valuesChris Lattner2004-05-101-14/+21
| | | | | | | | in the basic block being processed. This fixes PhiElimination on kimwitu++ from taking 105s to taking a much more reasonable 0.6s (in a debug build). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13453 91177308-0d34-0410-b5e6-96231b3b80d8
* Now that we use an ilist of machine instructions, iterators are more robustChris Lattner2004-05-101-5/+8
| | | | | | | | | | than before. Because this is the case, we can compute the first non-phi instruction once when de-phi'ing a block. This shaves ~4s off of phielimination of _Z7yyparsev in kimwitu++ from 109s -> 105s. There are still much more important gains to come. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13452 91177308-0d34-0410-b5e6-96231b3b80d8
* Operate on the Machine CFG instead of on the LLVM CFGChris Lattner2004-05-011-8/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13302 91177308-0d34-0410-b5e6-96231b3b80d8
* MachineBasicBlock::remove should not modify the iterator passed inChris Lattner2004-03-311-2/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12571 91177308-0d34-0410-b5e6-96231b3b80d8
* Finegrainify namespacificationChris Lattner2004-02-231-5/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11757 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor rewinding code for finding the first terminator of a basicAlkis Evlogimenos2004-02-231-16/+1
| | | | | | | | | | | | | block into MachineBasicBlock::getFirstTerminator(). This also fixes a bug in the implementation of the above in both RegAllocLocal and InstrSched, where instructions where added after the terminator if the basic block's only instruction was a terminator (it shouldn't matter for RegAllocLocal since this case never occurs in practice). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11748 91177308-0d34-0410-b5e6-96231b3b80d8
* Use newly added next() and prior() utility functions.Alkis Evlogimenos2004-02-141-4/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11430 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove getAllocatedRegNum(). Use getReg() instead.Alkis Evlogimenos2004-02-131-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11393 91177308-0d34-0410-b5e6-96231b3b80d8
* Change MachineBasicBlock's vector of MachineInstr pointers into anAlkis Evlogimenos2004-02-121-16/+19
| | | | | | | | | | ilist of MachineInstr objects. This allows constant time removal and insertion of MachineInstr instances from anywhere in each MachineBasicBlock. It also allows for constant time splicing of MachineInstrs into or out of MachineBasicBlocks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11340 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not use MachineOperand::isVirtualRegister either!Chris Lattner2004-02-101-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11283 91177308-0d34-0410-b5e6-96231b3b80d8
* Change interface of MachineOperand as follows:Alkis Evlogimenos2003-12-141-1/+1
| | | | | | | | | | | | | | | | a) remove opIsUse(), opIsDefOnly(), opIsDefAndUse() b) add isUse(), isDef() c) rename opHiBits32() to isHiBits32(), opLoBits32() to isLoBits32(), opHiBits64() to isHiBits64(), opLoBits64() to isLoBits64(). This results to much more readable code, for example compare "op.opIsDef() || op.opIsDefAndUse()" to "op.isDef()" a pattern used very often in the code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10461 91177308-0d34-0410-b5e6-96231b3b80d8
* Put all LLVM code into the llvm namespace, as per bug 109.Brian Gaeke2003-11-111-0/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8
* Added LLVM project notice to the top of every C++ source file.John Criswell2003-10-201-0/+7
| | | | | | | Header files will be on the way. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9298 91177308-0d34-0410-b5e6-96231b3b80d8
* Const correctness fixesChris Lattner2003-07-261-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7349 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix bug: Jello/2003-06-04-bzip2-bug.llChris Lattner2003-06-051-23/+21
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6624 91177308-0d34-0410-b5e6-96231b3b80d8
* (1) Added special register class containing (for now) %fsr.Vikram S. Adve2003-05-271-1/+1
| | | | | | | | | | | | | | Fixed spilling of %fcc[0-3] which are part of %fsr. (2) Moved some machine-independent reg-class code to class TargetRegInfo from SparcReg{Class,}Info. (3) Renamed MachienOperand::opIsDef to MachineOperand::opIsDefOnly() and related functions and flags. Fixed several bugs where only "isDef" was being checked, not "isDefAndUse". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6341 91177308-0d34-0410-b5e6-96231b3b80d8
* Use a kill, not a dead definition, update commentChris Lattner2003-05-121-5/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6131 91177308-0d34-0410-b5e6-96231b3b80d8
* * Keep LiveVariable information more up-to-date and consistentChris Lattner2003-05-121-7/+87
| | | | | | | | | | * *** Finally mark values that are inputs to PHIs as killed when appropriate. This should make the generated code quite a bit better. For example, the local-ra will not have to spill PHI inputs at the end of predecessor BB's anymore. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6117 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix bug where we could iterate off the end of a basic blockChris Lattner2003-05-121-2/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6116 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix N^2 algorithmChris Lattner2003-05-121-25/+34
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6112 91177308-0d34-0410-b5e6-96231b3b80d8
* * Fix several commentsChris Lattner2003-05-121-6/+37
| | | | | | | * Update LiveVar info better, fixing bug: Jello/2003-05-11-PHIRegAllocBug.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6110 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix problems with empty basic blocksChris Lattner2003-01-161-10/+14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5326 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename MachineInstrInfo -> TargetInstrInfoChris Lattner2003-01-141-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5272 91177308-0d34-0410-b5e6-96231b3b80d8
* New filesChris Lattner2003-01-131-0/+133
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5262 91177308-0d34-0410-b5e6-96231b3b80d8
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