Add grow() member that grows the maps when the number of virtual registers in the function has changed.
Add grow() member that grows the maps when the number of virtual
registers in the function has changed.


git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@13893 91177308-0d34-0410-b5e6-96231b3b80d8

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