d82617d2e8
SmallPtrSetImplBase::swap needs to deal with four cases depending on whether LHS is small and whether RHS is small. Now, the code to swap small LHS and large RHS is symmetric with the code to swap large LHS and small RHS. This patch rearranges code so that we first take care of the case where both LHS and RHS are small. Then we compute references SmallSide and LargeSide and actually swap the two instances. This refactoing saves about 11 lines of code. Note that SmallDenseMap::swap also uses a similar trick.
The LLVM Compiler Infrastructure
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