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Fix PR294
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12425 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -172,7 +172,8 @@ void RegAllocSimple::AllocateBasicBlock(MachineBasicBlock &MBB) {
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for (int i = MI->getNumOperands() - 1; i >= 0; --i) {
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for (int i = MI->getNumOperands() - 1; i >= 0; --i) {
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MachineOperand &op = MI->getOperand(i);
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MachineOperand &op = MI->getOperand(i);
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if (op.isRegister() && MRegisterInfo::isVirtualRegister(op.getReg())) {
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if (op.isRegister() && op.getReg() &&
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MRegisterInfo::isVirtualRegister(op.getReg())) {
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unsigned virtualReg = (unsigned) op.getReg();
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unsigned virtualReg = (unsigned) op.getReg();
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DEBUG(std::cerr << "op: " << op << "\n");
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DEBUG(std::cerr << "op: " << op << "\n");
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DEBUG(std::cerr << "\t inst[" << i << "]: ";
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DEBUG(std::cerr << "\t inst[" << i << "]: ";
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