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Fix PR294

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12425 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-03-16 01:45:55 +00:00
parent 63dd4ff809
commit 6ae9eb1566
1 changed files with 2 additions and 1 deletions
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3
lib/CodeGen/RegAllocSimple.cpp
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@ -172,7 +172,8 @@ void RegAllocSimple::AllocateBasicBlock(MachineBasicBlock &MBB) {
for (int i = MI->getNumOperands() - 1; i >= 0; --i) {
MachineOperand &op = MI->getOperand(i);
if (op.isRegister() && MRegisterInfo::isVirtualRegister(op.getReg())) {
if (op.isRegister() && op.getReg() &&
MRegisterInfo::isVirtualRegister(op.getReg())) {
unsigned virtualReg = (unsigned) op.getReg();
DEBUG(std::cerr << "op: " << op << "\n");
DEBUG(std::cerr << "\t inst[" << i << "]: ";