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[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206142 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper
2014-04-14 00:51:57 +00:00
parent b9ed50cf17
commit 4ba844388c
169 changed files with 1547 additions and 1489 deletions
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8
lib/CodeGen/LiveRangeEdit.cpp
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@ -164,7 +164,7 @@ void LiveRangeEdit::eraseVirtReg(unsigned Reg) {
bool LiveRangeEdit::foldAsLoad(LiveInterval *LI,
SmallVectorImpl<MachineInstr*> &Dead) {
MachineInstr *DefMI = 0, *UseMI = 0;
MachineInstr *DefMI = nullptr, *UseMI = nullptr;
// Check that there is a single def and a single use.
for (MachineOperand &MO : MRI.reg_nodbg_operands(LI->reg)) {
@ -197,7 +197,7 @@ bool LiveRangeEdit::foldAsLoad(LiveInterval *LI,
// We also need to make sure it is safe to move the load.
// Assume there are stores between DefMI and UseMI.
bool SawStore = true;
if (!DefMI->isSafeToMove(&TII, 0, SawStore))
if (!DefMI->isSafeToMove(&TII, nullptr, SawStore))
return false;
DEBUG(dbgs() << "Try to fold single def: " << *DefMI
@ -213,7 +213,7 @@ bool LiveRangeEdit::foldAsLoad(LiveInterval *LI,
DEBUG(dbgs() << " folded: " << *FoldMI);
LIS.ReplaceMachineInstrInMaps(UseMI, FoldMI);
UseMI->eraseFromParent();
DefMI->addRegisterDead(LI->reg, 0);
DefMI->addRegisterDead(LI->reg, nullptr);
Dead.push_back(DefMI);
++NumDCEFoldedLoads;
return true;
@ -236,7 +236,7 @@ void LiveRangeEdit::eliminateDeadDef(MachineInstr *MI, ToShrinkSet &ToShrink) {
// Use the same criteria as DeadMachineInstructionElim.
bool SawStore = false;
if (!MI->isSafeToMove(&TII, 0, SawStore)) {
if (!MI->isSafeToMove(&TII, nullptr, SawStore)) {
DEBUG(dbgs() << "Can't delete: " << Idx << '\t' << *MI);
return;
}