aboutsummaryrefslogtreecommitdiffstats
path: root/lib/CodeGen/LiveIntervalAnalysis.cpp
Commit message (Collapse)AuthorAgeFilesLines
* Empty basic block should have an empty range.Evan Cheng2008-04-161-1/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49800 91177308-0d34-0410-b5e6-96231b3b80d8
* Use of implicit_def is not part of live interval. Create empty intervals for ↵Evan Cheng2008-04-111-12/+30
| | | | | | the uses when the live interval is being spilled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49542 91177308-0d34-0410-b5e6-96231b3b80d8
* - More aggressively coalescing away copies whose source is defined by an ↵Evan Cheng2008-04-091-2/+9
| | | | | | | | | implicit_def. - Added insert_subreg coalescing support. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49448 91177308-0d34-0410-b5e6-96231b3b80d8
* - Treat a live range defined by an implicit_def as a zero-sized one.Evan Cheng2008-04-031-2/+28
| | | | | | | - Eliminate an implicit_def when it's being spilled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49166 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-materialization is for uses only.Evan Cheng2008-04-011-4/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49053 91177308-0d34-0410-b5e6-96231b3b80d8
* It's not safe to fold a load from GV stub or constantpool into a two-address ↵Evan Cheng2008-03-311-2/+3
| | | | | | use. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49002 91177308-0d34-0410-b5e6-96231b3b80d8
* The support for remat of instructions with a register operand is hackish, to ↵Evan Cheng2008-03-311-18/+7
| | | | | | say the least. Since the register operand guaranteed to be PIC base and that it is already live at all uses, we are making sure it will not be spilled after its uses are rematerialized for both performance and correctness reasons. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48976 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove isImplicitDef TargetInstrDesc flag.Evan Cheng2008-03-151-4/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48381 91177308-0d34-0410-b5e6-96231b3b80d8
* Transfer physical register spill info when load / store folding happens.Evan Cheng2008-03-111-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48246 91177308-0d34-0410-b5e6-96231b3b80d8
* When the register allocator runs out of registers, spill a physical register ↵Evan Cheng2008-03-111-0/+78
| | | | | | around the def's and use's of the interval being allocated to make it possible for the interval to target a register and spill it right away and restore a register for uses. This likely generates terrible code but is before than aborting. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48218 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor code. Remove duplicated functions that basically do the same thing asEvan Cheng2008-03-051-12/+13
| | | | | | | findRegisterUseOperandIdx, findRegisterDefOperandIndx. Fix some naming inconsistencies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47927 91177308-0d34-0410-b5e6-96231b3b80d8
* Spiller now remove unused spill slots.Evan Cheng2008-02-271-0/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47657 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename PrintableName to Name.Bill Wendling2008-02-261-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47629 91177308-0d34-0410-b5e6-96231b3b80d8
* Change "Name" to "AsmName" in the target register info. Gee, a refactoring toolBill Wendling2008-02-261-1/+1
| | | | | | | would have been a Godsend here! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47625 91177308-0d34-0410-b5e6-96231b3b80d8
* All remat'ed loads cannot be folded into two-address code. Not just argument ↵Evan Cheng2008-02-251-4/+4
| | | | | | loads. This change doesn't really have any impact on codegen. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47557 91177308-0d34-0410-b5e6-96231b3b80d8
* Correctly determine whether a argument load can be folded into its uses.Evan Cheng2008-02-251-45/+52
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47545 91177308-0d34-0410-b5e6-96231b3b80d8
* Rematerialization logic was overly conservative when it comes to loads from ↵Evan Cheng2008-02-231-20/+6
| | | | | | fixed stack slots. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47529 91177308-0d34-0410-b5e6-96231b3b80d8
* If remating a machine instr with virtual register operand, make sure the vr ↵Evan Cheng2008-02-231-2/+1
| | | | | | is avaliable at all uses regardless of whether it would be folded. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47526 91177308-0d34-0410-b5e6-96231b3b80d8
* Recognize loads of arguments as re-materializable first. Therefore if ↵Evan Cheng2008-02-231-24/+26
| | | | | | isReallyTriviallyReMaterializable() returns true it doesn't confuse it as a "normal" re-materializable instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47520 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix spill weight updating bug.Evan Cheng2008-02-231-15/+27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47507 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable re-materialization of instructions which have virtual register ↵Evan Cheng2008-02-221-28/+155
| | | | | | | | | operands if the definition of the operand also reaches its uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47475 91177308-0d34-0410-b5e6-96231b3b80d8
* Clean up some spilling code using MachineRegisterInfo.Evan Cheng2008-02-211-22/+51
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47416 91177308-0d34-0410-b5e6-96231b3b80d8
* New helper function getMBBFromIndex() that given an index in any instruction ↵Roman Levenstein2008-02-181-16/+0
| | | | | | of an MBB returns a pointer the MBB. Reviewed by Evan. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47267 91177308-0d34-0410-b5e6-96231b3b80d8
* - Removing the infamous r2rMap_ and rep() method. Now the coalescer will updateEvan Cheng2008-02-151-28/+36
| | | | | | | | register defs and uses after each successful coalescing. - Also removed a number of hacks and fixed some subtle kill information bugs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47167 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a potential serious problem where kills belonging to the val# defined by ↵Evan Cheng2008-02-131-3/+2
| | | | | | a two-address instruction is also on the val# that defines the input. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47057 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename MRegisterInfo to TargetRegisterInfo.Dan Gohman2008-02-101-22/+22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46930 91177308-0d34-0410-b5e6-96231b3b80d8
* Forgot these files.Evan Cheng2008-02-081-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46896 91177308-0d34-0410-b5e6-96231b3b80d8
* Move some functionality for adding flags to MachineInstr's into methods on ↵Owen Anderson2008-01-241-1/+1
| | | | | | MachineInstr rather than LiveVariables. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46295 91177308-0d34-0410-b5e6-96231b3b80d8
* Only remat loads from immutable stack slots.Evan Cheng2008-01-101-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45831 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify some code.Evan Cheng2008-01-101-8/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45830 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't use LiveVariables::VarInfo::DefInst.Owen Anderson2008-01-101-1/+8
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45815 91177308-0d34-0410-b5e6-96231b3b80d8
* rename TargetInstrDescriptor -> TargetInstrDesc.Chris Lattner2008-01-071-10/+10
| | | | | | | | Make MachineInstr::getDesc return a reference instead of a pointer, since it can never be null. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45695 91177308-0d34-0410-b5e6-96231b3b80d8
* simplify some code using new predicatesChris Lattner2008-01-071-3/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45689 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename MachineInstr::getInstrDescriptor -> getDesc(), which reflectsChris Lattner2008-01-071-7/+7
| | | | | | | | | | | | | | | | | | that it is cheap and efficient to get. Move a variety of predicates from TargetInstrInfo into TargetInstrDescriptor, which makes it much easier to query a predicate when you don't have TII around. Now you can use MI->getDesc()->isBranch() instead of going through TII, and this is much more efficient anyway. Not all of the predicates have been moved over yet. Update old code that used MI->getInstrDescriptor()->Flags to use the new predicates in many places. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45674 91177308-0d34-0410-b5e6-96231b3b80d8
* Update CodeGen for MRegisterInfo --> TargetInstrInfo changes.Owen Anderson2008-01-071-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45673 91177308-0d34-0410-b5e6-96231b3b80d8
* rename isLoad -> isSimpleLoad due to evan's desire to have such a predicate.Chris Lattner2008-01-061-5/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45667 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't recalculate the loop info and loop dominators analyses if they'reBill Wendling2008-01-041-0/+2
| | | | | | | preserved. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45596 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename SSARegMap -> MachineRegisterInfo in keeping with the idea Chris Lattner2007-12-311-10/+10
| | | | | | | | | | | | | | | | that "machine" classes are used to represent the current state of the code being compiled. Given this expanded name, we can start moving other stuff into it. For now, move the UsedPhysRegs and LiveIn/LoveOuts vectors from MachineFunction into it. Update all the clients to match. This also reduces some needless #includes, such as MachineModuleInfo from MachineFunction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45467 91177308-0d34-0410-b5e6-96231b3b80d8
* More cleanups for MachineOperand:Chris Lattner2007-12-301-1/+1
| | | | | | | | | | | - Eliminate the static "print" method for operands, moving it into MachineOperand::print. - Change various set* methods for register flags to take a bool for the value to set it to. Remove unset* methods. - Group methods more logically by operand flavor in MachineOperand.h git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45461 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
* Implicit def instructions, e.g. X86::IMPLICIT_DEF_GR32, are always ↵Evan Cheng2007-12-121-3/+15
| | | | | | re-materializable and they should not be spilled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44960 91177308-0d34-0410-b5e6-96231b3b80d8
* Switch over to MachineLoopInfo.Evan Cheng2007-12-111-5/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44838 91177308-0d34-0410-b5e6-96231b3b80d8
* Reverting 44702. It wasn't correct to rename them.Bill Wendling2007-12-081-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44727 91177308-0d34-0410-b5e6-96231b3b80d8
* Renaming:Bill Wendling2007-12-081-1/+1
| | | | | | | | isTriviallyReMaterializable -> hasNoSideEffects isReallyTriviallyReMaterializable -> isTriviallyReMaterializable git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44702 91177308-0d34-0410-b5e6-96231b3b80d8
* Turning simple splitting on. Start testing new coalescer heuristics as new ↵Evan Cheng2007-12-061-1/+1
| | | | | | llcbeta. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44660 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix for PR1831: if all defs of an interval are re-materializable, then it's ↵Evan Cheng2007-12-061-4/+34
| | | | | | a preferred spill candiate. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44644 91177308-0d34-0410-b5e6-96231b3b80d8
* MachineInstr can change. Store indexes instead.Evan Cheng2007-12-051-2/+12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44612 91177308-0d34-0410-b5e6-96231b3b80d8
* If a split live interval is spilled again, remove the kill marker on its ↵Evan Cheng2007-12-051-1/+4
| | | | | | last use. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44611 91177308-0d34-0410-b5e6-96231b3b80d8
* Clobber more bugs.Evan Cheng2007-12-051-2/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44610 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix kill info for split intervals.Evan Cheng2007-12-051-10/+20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44609 91177308-0d34-0410-b5e6-96231b3b80d8
generated by cgit v1.1 at 2025-05-20 21:51:14 +0000