Chris convinced me that the default size of the SmallVector (2) was too small.  Since it doesn't cost much to have 2 more (8 bytes), but not having them would require a malloc as soon as the third one is needed. Setting the default to 4 delays the malloc until the 5th parameter attribute.
Chris convinced me that the default size of the SmallVector (2) was too
small.  Since it doesn't cost much to have 2 more (8 bytes), but not having
them would require a malloc as soon as the third one is needed. Setting
the default to 4 delays the malloc until the 5th parameter attribute.


git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@35793 91177308-0d34-0410-b5e6-96231b3b80d8

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