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path: root/lib/CodeGen/SimpleRegisterCoalescing.cpp
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* Remove isReg, isImm, and isMBB, and change all their users to use Dan Gohman2007-09-141-5/+5
| | | | | | | | isRegister, isImmediate, and isMachineBasicBlock, which are equivalent, and more popular. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41958 91177308-0d34-0410-b5e6-96231b3b80d8
* Pluggable coalescers inplementation.David Greene2007-09-061-0/+11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41743 91177308-0d34-0410-b5e6-96231b3b80d8
* Use pool allocator for all the VNInfo's to improve memory access locality. ↵Evan Cheng2007-09-051-9/+10
| | | | | | This reduces coalescing time on siod Mac OS X PPC by 35%. Also remove the back ptr from VNInfo to LiveInterval and other tweaks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41729 91177308-0d34-0410-b5e6-96231b3b80d8
* More tweaks to improve compile time.Evan Cheng2007-09-011-19/+21
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41669 91177308-0d34-0410-b5e6-96231b3b80d8
* std::map -> DenseMap for slight compile time benefit.Evan Cheng2007-08-311-7/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41650 91177308-0d34-0410-b5e6-96231b3b80d8
* Use std::map instead of a (potentially very sparse) array to track val# ↵Evan Cheng2007-08-311-36/+27
| | | | | | defined by copy from the other live range. Minor compile time win when number of val# is large. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41640 91177308-0d34-0410-b5e6-96231b3b80d8
* Change LiveRange so it keeps a pointer to the VNInfo rather than an index.Evan Cheng2007-08-291-110/+118
| | | | | | | | Changes related modules so VNInfo's are not copied. This decrease copy coalescing time by 45% and overall compilation time by 10% on siod. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41579 91177308-0d34-0410-b5e6-96231b3b80d8
* Recover most of the compile time regression due to recent live interval changes.Evan Cheng2007-08-281-17/+27
| | | | | | | | | 1. Eliminate the costly live interval "swapping". 2. Change ValueNumberInfo container from SmallVector to std::vector. The former performs slowly when the vector size is very large. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41536 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix some kill info update bugs; add hidden option -disable-rematerialization ↵Evan Cheng2007-08-161-0/+6
| | | | | | to turn off remat for debugging. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41118 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix for PR1596: AdjustCopiesBackFrom() should conservatively check if any of ↵Evan Cheng2007-08-141-0/+13
| | | | | | its sub-registers may overlap with the interval of the copy that's being coalesced. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41084 91177308-0d34-0410-b5e6-96231b3b80d8
* Kill info update bugs.Evan Cheng2007-08-141-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41064 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-implement trivial rematerialization. This allows def MIs whose live ↵Evan Cheng2007-08-131-6/+0
| | | | | | intervals that are coalesced to be rematerialized. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41060 91177308-0d34-0410-b5e6-96231b3b80d8
* No need to remove dead range from soon-to-be-dead live interval. Its val# ↵Evan Cheng2007-08-121-3/+3
| | | | | | may be out of whack. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41024 91177308-0d34-0410-b5e6-96231b3b80d8
* Code to maintain kill information during register coalescing.Evan Cheng2007-08-111-14/+42
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41016 91177308-0d34-0410-b5e6-96231b3b80d8
* unbreak the buildChris Lattner2007-08-091-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40976 91177308-0d34-0410-b5e6-96231b3b80d8
* Bug fix. ~1U marks the val# dead.Evan Cheng2007-08-091-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40975 91177308-0d34-0410-b5e6-96231b3b80d8
* - Each val# can have multiple kills.Evan Cheng2007-08-081-2/+2
| | | | | | | | - Fix some minor bugs related to special markers on val# def. ~0U means undefined, ~1U means dead val#. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40916 91177308-0d34-0410-b5e6-96231b3b80d8
* - LiveInterval value#'s now have 3 components: def instruction #,Evan Cheng2007-08-071-12/+12
| | | | | | | | | | | kill instruction #, and source register number (iff the value# is defined by a copy). - Now def instruction # is set for every value#, not just for copy defined ones. - Update some outdated code related inactive live ranges. - Kill info not yet set. That's next patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40913 91177308-0d34-0410-b5e6-96231b3b80d8
* shorten this nameChris Lattner2007-08-051-2/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40843 91177308-0d34-0410-b5e6-96231b3b80d8
* simpleregistercoalescing -> regcoalescing. It's too long for me to handle.Evan Cheng2007-07-311-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40654 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't assume that only Uses can be kills. Defs are marked as kills initiallyDan Gohman2007-07-201-2/+2
| | | | | | | | | when there are no uses. This fixes a dangling-pointer bug, where pointers to deleted instructions were not removed from kills lists. More info here: http://lists.cs.uiuc.edu/pipermail/llvmdev/2007-July/009749.html git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40131 91177308-0d34-0410-b5e6-96231b3b80d8
* Add comment.Evan Cheng2007-07-181-0/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40022 91177308-0d34-0410-b5e6-96231b3b80d8
* fix typosGabor Greif2007-07-091-31/+31
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@38453 91177308-0d34-0410-b5e6-96231b3b80d8
* Factor live variable analysis so it does not do register coalescingDavid Greene2007-06-081-0/+1138
simultaneously. Move that pass to SimpleRegisterCoalescing. This makes it easier to implement alternative register allocation and coalescing strategies while maintaining reuse of the existing live interval analysis. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37520 91177308-0d34-0410-b5e6-96231b3b80d8
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