When adding assignment expressions to the set of block-level expressions, only include the assignment expressions whose result (as in the value of the expression) is used by other expressions.
When adding assignment expressions to the set of block-level expressions, only
include the assignment expressions whose result (as in the value of the
expression) is used by other expressions.


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@46361 91177308-0d34-0410-b5e6-96231b3b80d8

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