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[CodeGen] Use DenseMap::operator[] (NFC) #108489

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Merged
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Sep 13, 2024
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[CodeGen] Use DenseMap::operator[] (NFC) #108489

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8 changes: 4 additions & 4 deletions llvm/lib/CodeGen/MachineCopyPropagation.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -108,9 +108,10 @@ static std::optional<DestSourcePair> isCopyInstr(const MachineInstr &MI,

class CopyTracker {
struct CopyInfo {
MachineInstr *MI, *LastSeenUseInCopy;
MachineInstr *MI = nullptr;
MachineInstr *LastSeenUseInCopy = nullptr;
SmallVector<MCRegister, 4> DefRegs;
bool Avail;
bool Avail = false;
};

DenseMap<MCRegUnit, CopyInfo> Copies;
Expand Down Expand Up @@ -240,8 +241,7 @@ class CopyTracker {
// Remember source that's copied to Def. Once it's clobbered, then
// it's no longer available for copy propagation.
for (MCRegUnit Unit : TRI.regunits(Src)) {
auto I = Copies.insert({Unit, {nullptr, nullptr, {}, false}});
auto &Copy = I.first->second;
auto &Copy = Copies[Unit];
if (!is_contained(Copy.DefRegs, Def))
Copy.DefRegs.push_back(Def);
Copy.LastSeenUseInCopy = MI;
Expand Down