// is spilled or split.
//===----------------------------------------------------------------------===//
-#define DEBUG_TYPE "regalloc"
#include "llvm/CodeGen/LiveRangeEdit.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/CalcSpillWeights.h"
using namespace llvm;
+#define DEBUG_TYPE "regalloc"
+
STATISTIC(NumDCEDeleted, "Number of instructions deleted by DCE");
STATISTIC(NumDCEFoldedLoads, "Number of single use loads folded after DCE");
STATISTIC(NumFracRanges, "Number of live ranges fractured by DCE");
}
// If only cheap remats were requested, bail out early.
- if (cheapAsAMove && !RM.OrigMI->isAsCheapAsAMove())
+ if (cheapAsAMove && !TII.isAsCheapAsAMove(RM.OrigMI))
return false;
// Verify that all used registers are available with the same values.
bool LiveRangeEdit::foldAsLoad(LiveInterval *LI,
SmallVectorImpl<MachineInstr*> &Dead) {
- MachineInstr *DefMI = 0, *UseMI = 0;
+ MachineInstr *DefMI = nullptr, *UseMI = nullptr;
// Check that there is a single def and a single use.
- for (MachineRegisterInfo::reg_nodbg_iterator I = MRI.reg_nodbg_begin(LI->reg),
- E = MRI.reg_nodbg_end(); I != E; ++I) {
- MachineOperand &MO = I.getOperand();
+ for (MachineOperand &MO : MRI.reg_nodbg_operands(LI->reg)) {
MachineInstr *MI = MO.getParent();
if (MO.isDef()) {
if (DefMI && DefMI != MI)
// We also need to make sure it is safe to move the load.
// Assume there are stores between DefMI and UseMI.
bool SawStore = true;
- if (!DefMI->isSafeToMove(&TII, 0, SawStore))
+ if (!DefMI->isSafeToMove(&TII, nullptr, SawStore))
return false;
DEBUG(dbgs() << "Try to fold single def: " << *DefMI
DEBUG(dbgs() << " folded: " << *FoldMI);
LIS.ReplaceMachineInstrInMaps(UseMI, FoldMI);
UseMI->eraseFromParent();
- DefMI->addRegisterDead(LI->reg, 0);
+ DefMI->addRegisterDead(LI->reg, nullptr);
Dead.push_back(DefMI);
++NumDCEFoldedLoads;
return true;
// Use the same criteria as DeadMachineInstructionElim.
bool SawStore = false;
- if (!MI->isSafeToMove(&TII, 0, SawStore)) {
+ if (!MI->isSafeToMove(&TII, nullptr, SawStore)) {
DEBUG(dbgs() << "Can't delete: " << Idx << '\t' << *MI);
return;
}
for (unsigned I = 0, Size = size(); I < Size; ++I) {
LiveInterval &LI = LIS.getInterval(get(I));
if (MRI.recomputeRegClass(LI.reg, MF.getTarget()))
- DEBUG(dbgs() << "Inflated " << PrintReg(LI.reg) << " to "
- << MRI.getRegClass(LI.reg)->getName() << '\n');
- VRAI.CalculateWeightAndHint(LI);
+ DEBUG({
+ const TargetRegisterInfo *TRI = MF.getSubtarget().getRegisterInfo();
+ dbgs() << "Inflated " << PrintReg(LI.reg) << " to "
+ << TRI->getRegClassName(MRI.getRegClass(LI.reg)) << '\n';
+ });
+ VRAI.calculateSpillWeightAndHint(LI);
}
}