Summary: I have collected some typos I have found while looking at the code.
Reviewed-by: kvn, never

Summary: Move the CreateEx up before each round of IFG construction
Reviewed-by: never, phh

Summary: rematerializing nodes results in incorrect inputs
Reviewed-by: rasbold

Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell

Summary: copy elimination of a constant value results in incorrect execution
Reviewed-by: kvn, sgoldman, rasbold