Replace std::copy with a back inserter with vector append where feasible

All of the cases were just appending from random access iterators to a
vector. Using insert/append can grow the vector to the perfect size
directly and moves the growing out of the loop. No intended functionalty
change.

llvm-svn: 230845

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/Target/X86/X86InstrInfo.cpp b/llvm/lib/Target/X86/X86InstrInfo.cpp
index f5b9680d0bb..ea4e25188da 100644
--- a/llvm/lib/Target/X86/X86InstrInfo.cpp
+++ b/llvm/lib/Target/X86/X86InstrInfo.cpp
@@ -5559,7 +5559,7 @@ X86InstrInfo::unfoldMemoryOperand(SelectionDAG &DAG, SDNode *N,
   }
   if (Load)
     BeforeOps.push_back(SDValue(Load, 0));
-  std::copy(AfterOps.begin(), AfterOps.end(), std::back_inserter(BeforeOps));
+  BeforeOps.insert(BeforeOps.end(), AfterOps.begin(), AfterOps.end());
   SDNode *NewNode= DAG.getMachineNode(Opc, dl, VTs, BeforeOps);
   NewNodes.push_back(NewNode);