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Simplify this code by using use_iterator instead of reg_iterator
and skipping the defs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82811 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -70,10 +70,8 @@ bool MachineSinking::AllUsesDominatedByBlock(unsigned Reg,
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MachineBasicBlock *MBB) const {
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assert(TargetRegisterInfo::isVirtualRegister(Reg) &&
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"Only makes sense for vregs");
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for (MachineRegisterInfo::reg_iterator I = RegInfo->reg_begin(Reg),
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E = RegInfo->reg_end(); I != E; ++I) {
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if (I.getOperand().isDef()) continue; // ignore def.
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for (MachineRegisterInfo::use_iterator I = RegInfo->use_begin(Reg),
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E = RegInfo->use_end(); I != E; ++I) {
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// Determine the block of the use.
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MachineInstr *UseInst = &*I;
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MachineBasicBlock *UseBlock = UseInst->getParent();
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