/// will not invalidate either of them. This returns true if the edge was split,
/// false otherwise.
///
-/// If MergeIdenticalEdges is true (the default), *all* edges from TI to the
+/// If MergeIdenticalEdges is true (not the default), *all* edges from TI to the
/// specified successor will be merged into the same critical edge block.
/// This is most commonly interesting with switch instructions, which may
-/// have many edges to any one destination. This ensures that all edges to that
+/// have many edges to any one destination. This ensures that all edges to that
/// dest go to one block instead of each going to a different block, but isn't
/// the standard definition of a "critical edge".
///