//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "regalloc"
+#include "RegisterClassInfo.h"
#include "llvm/BasicBlock.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
MachineRegisterInfo *MRI;
const TargetRegisterInfo *TRI;
const TargetInstrInfo *TII;
+ RegisterClassInfo RegClassInfo;
// Basic block currently being allocated.
MachineBasicBlock *MBB;
}
}
- TargetRegisterClass::iterator AOB = RC->allocation_order_begin(*MF);
- TargetRegisterClass::iterator AOE = RC->allocation_order_end(*MF);
+ ArrayRef<unsigned> AO = RegClassInfo.getOrder(RC);
// First try to find a completely free register.
- for (TargetRegisterClass::iterator I = AOB; I != AOE; ++I) {
+ for (ArrayRef<unsigned>::iterator I = AO.begin(), E = AO.end(); I != E; ++I) {
unsigned PhysReg = *I;
- if (PhysRegState[PhysReg] == regFree && !UsedInInstr.test(PhysReg) &&
- Allocatable.test(PhysReg))
+ if (PhysRegState[PhysReg] == regFree && !UsedInInstr.test(PhysReg))
return assignVirtToPhysReg(LRE, PhysReg);
}
<< RC->getName() << "\n");
unsigned BestReg = 0, BestCost = spillImpossible;
- for (TargetRegisterClass::iterator I = AOB; I != AOE; ++I) {
- if (!Allocatable.test(*I)) {
- DEBUG(dbgs() << "\tRegister " << *I << " is not allocatable.\n");
- continue;
- }
+ for (ArrayRef<unsigned>::iterator I = AO.begin(), E = AO.end(); I != E; ++I) {
unsigned Cost = calcSpillCost(*I);
DEBUG(dbgs() << "\tRegister: " << *I << "\n");
DEBUG(dbgs() << "\tCost: " << Cost << "\n");
TM = &Fn.getTarget();
TRI = TM->getRegisterInfo();
TII = TM->getInstrInfo();
+ RegClassInfo.runOnMachineFunction(Fn);
UsedInInstr.resize(TRI->getNumRegs());
Allocatable = TRI->getAllocatableSet(*MF);