Request for review (M): 6860469: remix_address_expressions sets incorrect control causing crash in split_if_with_block_post

[Chuck Rasbold]

http://cr.openjdk.java.net/~rasbold/6860469/webrev.00<http://cr.openjdk.java.net/%7Erasbold/6860469/webrev.00>

Fixed 6860469: remix_address_expressions sets incorrect control causing
crash in split_if_with_block_post

Consult the control node of both inputs when deciding where to place
new LShiftI node.

Previously, we assumed the invar input should set the new node's
control, and the scale input was irrelevant for control's sake.
However, sometimes the invar input is a constant, allowing it to be
higher in the dom tree than the scale.

Fix provided by Hiroshi Yamauchi (yamauchi at google.com)
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