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[SelectionDAGBuilder] Save iterator to avoid second DenseMap lookup. NFC 

We were calling find and then using operator[]. Instead keep the
iterator from find and use it to get the value.

Just happened to notice while investigating how we decide what extends
to use between basic blocks.
This commit is contained in:
Craig Topper 2021-08-10 22:32:18 -07:00
parent 510402c2c8
commit a8ae41fb51
1 changed files with 4 additions and 4 deletions
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8
llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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@ -9873,10 +9873,10 @@ SelectionDAGBuilder::CopyValueToVirtualRegister(const Value *V, unsigned Reg) {
None); // This is not an ABI copy.
SDValue Chain = DAG.getEntryNode();
ISD::NodeType ExtendType = (FuncInfo.PreferredExtendType.find(V) ==
FuncInfo.PreferredExtendType.end())
? ISD::ANY_EXTEND
: FuncInfo.PreferredExtendType[V];
ISD::NodeType ExtendType = ISD::ANY_EXTEND;
auto PreferredExtendIt = FuncInfo.PreferredExtendType.find(V);
if (PreferredExtendIt != FuncInfo.PreferredExtendType.end())
ExtendType = PreferredExtendIt->second;
RFV.getCopyToRegs(Op, DAG, getCurSDLoc(), Chain, nullptr, V, ExtendType);
PendingExports.push_back(Chain);
}