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Make the UselessRegs argument optional in the LiveRangeEdit constructor.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127181 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2011-03-07 22:42:16 +00:00
parent be2119e8e2
commit 1973b3e254
4 changed files with 11 additions and 13 deletions
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7
lib/CodeGen/LiveRangeEdit.cpp
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@ -75,9 +75,10 @@ bool LiveRangeEdit::allUsesAvailableAt(const MachineInstr *OrigMI,
if (MO.isDef())
return false;
// We cannot depend on virtual registers in uselessRegs_.
for (unsigned ui = 0, ue = uselessRegs_.size(); ui != ue; ++ui)
if (uselessRegs_[ui]->reg == MO.getReg())
return false;
if (uselessRegs_)
for (unsigned ui = 0, ue = uselessRegs_->size(); ui != ue; ++ui)
if ((*uselessRegs_)[ui]->reg == MO.getReg())
return false;
LiveInterval &li = lis.getInterval(MO.getReg());
const VNInfo *OVNI = li.getVNInfoAt(OrigIdx);