Add some trace output to TwoAddressInstructionPass.
llvm-svn: 160380
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@ -1001,6 +1001,7 @@ TwoAddressInstructionPass::RescheduleMIBelowKill(MachineBasicBlock *MBB,
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LV->removeVirtualRegisterKilled(Reg, KillMI);
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LV->addVirtualRegisterKilled(Reg, MI);
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DEBUG(dbgs() << "\trescheduled below kill: " << *KillMI);
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return true;
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}
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@ -1154,6 +1155,7 @@ TwoAddressInstructionPass::RescheduleKillAboveMI(MachineBasicBlock *MBB,
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LV->removeVirtualRegisterKilled(Reg, KillMI);
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LV->addVirtualRegisterKilled(Reg, MI);
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DEBUG(dbgs() << "\trescheduled kill: " << *KillMI);
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return true;
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}
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@ -1185,7 +1187,8 @@ TryInstructionTransform(MachineBasicBlock::iterator &mi,
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if (!regBKilled && MI.getOperand(DstIdx).isDead() &&
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DeleteUnusedInstr(mi, nmi, mbbi, Dist)) {
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++NumDeletes;
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return true; // Done with this instruction.
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DEBUG(dbgs() << "\tdeleted unused instruction.\n");
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return true; // Done with this instruction."
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}
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if (TargetRegisterInfo::isVirtualRegister(regA))
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