[Bug c/13219] -fgcse pessimizes double complex calculation

[coyote at coyotegulch dot com]

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           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|-fscse pessimizes double    |-fgcse pessimizes double
                   |complex calculation         |complex calculation


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13219