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LLVM
3.7.0
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RegAllocBase provides the register allocation driver and interface that can be extended to add interesting heuristics. More...
#include <RegAllocBase.h>
Static Public Attributes | |
| static bool | VerifyEnabled = false |
| VerifyEnabled - True when -verify-regalloc is given. More... | |
Protected Member Functions | |
| RegAllocBase () | |
| virtual | ~RegAllocBase () |
| void | init (VirtRegMap &vrm, LiveIntervals &lis, LiveRegMatrix &mat) |
| void | allocatePhysRegs () |
| virtual Spiller & | spiller ()=0 |
| virtual void | enqueue (LiveInterval *LI)=0 |
| enqueue - Add VirtReg to the priority queue of unassigned registers. More... | |
| virtual LiveInterval * | dequeue ()=0 |
| dequeue - Return the next unassigned register, or NULL. More... | |
| virtual unsigned | selectOrSplit (LiveInterval &VirtReg, SmallVectorImpl< unsigned > &splitLVRs)=0 |
| virtual void | aboutToRemoveInterval (LiveInterval &LI) |
| Method called when the allocator is about to remove a LiveInterval. More... | |
Protected Attributes | |
| const TargetRegisterInfo * | TRI |
| MachineRegisterInfo * | MRI |
| VirtRegMap * | VRM |
| LiveIntervals * | LIS |
| LiveRegMatrix * | Matrix |
| RegisterClassInfo | RegClassInfo |
Static Protected Attributes | |
| static const char | TimerGroupName [] = "Register Allocation" |
RegAllocBase provides the register allocation driver and interface that can be extended to add interesting heuristics.
Register allocators must override the selectOrSplit() method to implement live range splitting. They must also override enqueue/dequeue to provide an assignment order.
Definition at line 58 of file RegAllocBase.h.
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inlineprotected |
Definition at line 68 of file RegAllocBase.h.
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inlineprotectedvirtual |
Definition at line 71 of file RegAllocBase.h.
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inlineprotectedvirtual |
Method called when the allocator is about to remove a LiveInterval.
Definition at line 100 of file RegAllocBase.h.
Referenced by allocatePhysRegs().
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protected |
Definition at line 84 of file RegAllocBase.cpp.
References aboutToRemoveInterval(), llvm::LiveRegMatrix::assign(), llvm::VirtRegMap::assignVirt2Phys(), llvm::dbgs(), DEBUG, dequeue(), llvm::MachineInstr::emitError(), enqueue(), llvm::LiveIntervals::getInterval(), llvm::RegisterClassInfo::getOrder(), llvm::MachineRegisterInfo::getRegClass(), llvm::TargetRegisterInfo::getRegClassName(), llvm::VirtRegMap::hasPhys(), I, llvm::LiveRegMatrix::invalidateVirtRegs(), llvm::MachineInstr::isInlineAsm(), llvm::TargetRegisterInfo::isVirtualRegister(), LIS, Matrix, llvm::AArch64CC::MI, MRI, llvm::LiveInterval::reg, llvm::MachineRegisterInfo::reg_instr_begin(), llvm::MachineRegisterInfo::reg_instr_end(), llvm::MachineRegisterInfo::reg_nodbg_empty(), RegClassInfo, llvm::LiveIntervals::removeInterval(), llvm::report_fatal_error(), selectOrSplit(), TRI, and VRM.
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protectedpure virtual |
dequeue - Return the next unassigned register, or NULL.
Referenced by allocatePhysRegs().
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protectedpure virtual |
enqueue - Add VirtReg to the priority queue of unassigned registers.
Referenced by allocatePhysRegs().
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protected |
Definition at line 57 of file RegAllocBase.cpp.
References llvm::MachineRegisterInfo::freezeReservedRegs(), llvm::VirtRegMap::getMachineFunction(), llvm::VirtRegMap::getRegInfo(), llvm::VirtRegMap::getTargetRegInfo(), LIS, Matrix, MRI, RegClassInfo, llvm::RegisterClassInfo::runOnMachineFunction(), TRI, and VRM.
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protectedpure virtual |
Referenced by allocatePhysRegs().
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protectedpure virtual |
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protected |
Definition at line 64 of file RegAllocBase.h.
Referenced by allocatePhysRegs(), and init().
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protected |
Definition at line 65 of file RegAllocBase.h.
Referenced by allocatePhysRegs(), and init().
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protected |
Definition at line 62 of file RegAllocBase.h.
Referenced by allocatePhysRegs(), and init().
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protected |
Definition at line 66 of file RegAllocBase.h.
Referenced by allocatePhysRegs(), and init().
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staticprotected |
Definition at line 97 of file RegAllocBase.h.
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protected |
Definition at line 61 of file RegAllocBase.h.
Referenced by allocatePhysRegs(), and init().
VerifyEnabled - True when -verify-regalloc is given.
Definition at line 104 of file RegAllocBase.h.
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protected |
Definition at line 63 of file RegAllocBase.h.
Referenced by allocatePhysRegs(), and init().
1.8.6