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path: root/lib/CodeGen/RegAllocLocal.cpp
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2008-10-04Fix a bug in the local allocator's liveness computation where itDan Gohman
was setting kill flags on tied uses in two-address instructions. The kill flags were causing the allocator to think it could allocate the use and its tied def in different registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57039 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-03Switch the MachineOperand accessors back to the short names likeDan Gohman
isReg, etc., from isRegister, etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57006 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-24Remove SelectionDag early allocation of registersDale Johannesen
for earlyclobbers. Teach Local RA about earlyclobber, and add some tests for it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56592 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-13Remove isImm(), isReg(), and friends, in favor of Dan Gohman
isImmediate(), isRegister(), and friends, to avoid confusion about having two different names with the same meaning. I'm not attached to the longer names, and would be ok with changing to the shorter names if others prefer it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56189 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Tidy up several unbeseeming casts from pointer to intptr_t.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55779 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-22consolidate DenseMapInfo implementations, and add one for std::pair.Chris Lattner
Patch contributed by m-s. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55167 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-10Change StackSlotForVirtReg (which maps vregs to frame indices) from std::map ↵Evan Cheng
to IndexedMap. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53414 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-10- Change the horrible N^2 isRegReDefinedByTwoAddr. Now callers must supply ↵Evan Cheng
the operand index of def machineoperand and at most one full scan of non-implicit operands is needed. - Change local register allocator to use the new isRegReDefinedByTwoAddr instead of reinventing the wheel. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53394 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-10Use DenseMap instead of std::map in local register allocation. This ↵Owen Anderson
improves the time on instcombine from .31s to .22s git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53390 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-10Fix 403.gcc. Finally got the check for two-address-ness correct.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53389 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-09Revert r53367, which was breaking things.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53378 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-09Loosen our check here. Local regalloc only cares that the reg is used and ↵Owen Anderson
def'd by the same instruction, but about the details of the relationship. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53367 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-09Don't use an expensive check for two-address-ness when we have the ↵Owen Anderson
information sitting around to determine it much more quickly, This speeds up the local register allocator from 0.37s to 0.31s on instcombine. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53359 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-09Factor local liveness computation out into its own function.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53352 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-09Reuse the MO variable instead of recomputing it in RegAllocLocal.Dan Gohman
Keep RegAllocSimple in sync. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53351 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-09RegAllocLocal has a TargetInstrInfo data member. Use it insteadDan Gohman
of having local variables duplicate it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53346 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-09Use find with std::map, when that's what's needed, instead of lower_boundDan Gohman
with extra checks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53344 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-08Fix the build. Apparently MachineInstr& is no longer implicitly convertable ↵Owen Anderson
to MachineBasicBlock::iterator. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53260 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-08Make the local register allocator compute (purely local) liveness ↵Owen Anderson
information for itself rather than depending on LiveVariables. This decreases compile time from: 0.5909s (LV + Regalloc) to 0.421s (just regalloc). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53256 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-28Teach local register allocator to deal with landing pad MBB's.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51647 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-13Clean up the use of static and anonymous namespaces. This turned upDan Gohman
several things that were neither in an anonymous namespace nor static but not intended to be global. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51017 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-02Remove #include<map> from LiveVariables.h. Not referenced.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49099 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-05Refactor code. Remove duplicated functions that basically do the same thing asEvan Cheng
findRegisterUseOperandIdx, findRegisterDefOperandIndx. Fix some naming inconsistencies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47927 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-29If we reload a virtual register that's already been assigned, we want to markBill Wendling
that instruction as its "last use". This fixes PR1925. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47758 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26Rename PrintableName to Name.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47629 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26Change "Name" to "AsmName" in the target register info. Gee, a refactoring toolBill Wendling
would have been a Godsend here! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47625 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22Really really bad local register allocator bug. On X86, it was never using ↵Evan Cheng
ESI, EDI, and EBP because of a bug in RALocal::isPhysRegAvailable(). For example, when it checks if ESI is available, it then looks at registers aliases to ESI. SIL is marked -2 (not allocatable) but isPhysRegAvailable() incorrectly assumes it is in use and returns false for ESI. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47499 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22Add debugging printfs.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47496 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20Fix newly-introduced 4.3 warningsAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47375 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-11Determine whether a spill kills the register it's spilling before insertion ↵Evan Cheng
rather than trying to undo the kill marker afterwards. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46953 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-10Rename MRegisterInfo to TargetRegisterInfo.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46930 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-07Remove remnant of load folding in local register allocator. Patch by Holger ↵Evan Cheng
Schurig. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46861 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-06Fix a number of local register allocator issues: PR1609.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46821 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-06RegAllocaLocal still *requires* LiveVariables since it runs PHIElimination, ↵Evan Cheng
followed by TwoAddress which requires LiveVariables. We cannot run LiveVariables on non-SSA code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46813 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27Reg alloc doesn't really need LiveVariables.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46420 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-17When a live virtual register is being clobbered by an implicit def, it is ↵Evan Cheng
spilled and the spill is its kill. However, if the local allocator has determined the register has not been modified (possible when its value was reloaded), it would not issue a restore. In that case, mark the last use of the virtual register as kill. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46111 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-17Replace std::vector<bool> with BitVector.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46104 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07rename TargetInstrDescriptor -> TargetInstrDesc.Chris Lattner
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
2008-01-07Update CodeGen for MRegisterInfo --> TargetInstrInfo changes.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45673 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-01Move some more instruction creation methods from RegisterInfo into InstrInfo.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45484 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-31Rename SSARegMap -> MachineRegisterInfo in keeping with the idea Chris Lattner
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
2007-12-29Remove attribution from file headers, per discussion on llvmdev.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05Add a argument to storeRegToStackSlot and storeRegToAddr to specify whetherEvan Cheng
the stored register is killed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44600 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-02Remove redundant foldMemoryOperand variants and other code clean up.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44517 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-22Add missing paratheses.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43227 91177308-0d34-0410-b5e6-96231b3b80d8
2007-06-26Correctly handle implcit def / use operands.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37740 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-08Change names from RA to something unique to get rid of naming conflicts withBill Wendling
certain linkers... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36944 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-03Drop 'const'Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36662 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-02Use 'static const char' instead of 'static const int'.Devang Patel
Due to darwin gcc bug, one version of darwin linker coalesces static const int, which defauts PassID based pass identification. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36652 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-01Do not use typeinfo to identify pass in pass manager.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36632 91177308-0d34-0410-b5e6-96231b3b80d8
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