[CodeGen] LiveDebug - Use const-ref iterator in for-range loop. NFCI.

Avoid unnecessary copies, reported by MSVC static analyzer.

diff --git a/llvm/lib/CodeGen/LiveDebugValues/VarLocBasedImpl.cpp b/llvm/lib/CodeGen/LiveDebugValues/VarLocBasedImpl.cpp
index 99a57b5..899163c 100644 (file)
--- a/llvm/lib/CodeGen/LiveDebugValues/VarLocBasedImpl.cpp
+++ b/llvm/lib/CodeGen/LiveDebugValues/VarLocBasedImpl.cpp
@@ -627,7 +627,7 @@ private:
     /// add each of them to \p Regs and return true.
     bool getDescribingRegs(SmallVectorImpl<uint32_t> &Regs) const {
       bool AnyRegs = false;
-      for (auto Loc : Locs)
+      for (const auto &Loc : Locs)
         if (Loc.Kind == MachineLocKind::RegisterKind) {
           Regs.push_back(Loc.Value.RegNo);
           AnyRegs = true;

diff --git a/llvm/lib/CodeGen/LiveDebugVariables.cpp b/llvm/lib/CodeGen/LiveDebugVariables.cpp
index 9a86cc7..c929c1d 100644 (file)
--- a/llvm/lib/CodeGen/LiveDebugVariables.cpp
+++ b/llvm/lib/CodeGen/LiveDebugVariables.cpp
@@ -417,7 +417,7 @@ public:
   void addDef(SlotIndex Idx, ArrayRef<MachineOperand> LocMOs, bool IsIndirect,
               bool IsList, const DIExpression &Expr) {
     SmallVector<unsigned> Locs;
-    for (MachineOperand Op : LocMOs)
+    for (const MachineOperand &Op : LocMOs)
       Locs.push_back(getLocationNo(Op));
     DbgVariableValue DbgValue(Locs, IsIndirect, IsList, Expr);
     // Add a singular (Idx,Idx) -> value mapping.