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Subject: [Bug middle-end/56015] expand expands p[9] = COMPLEX_EXPR <-IMAGPART_EXPR <p[9]>, REALPART_EXPR <p[9]>>; incorrectly.
Date: Thu, 17 Jan 2013 08:52:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56015

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |wrong-code
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-01-17
          Component|fortran                     |middle-end
            Summary|Option -ffast-math reveals  |expand expands p[9] =
                   |i*(a+bi) -> -b-bi, a        |COMPLEX_EXPR
                   |complex multiplication bug  |<-IMAGPART_EXPR <p[9]>,
                   |                            |REALPART_EXPR <p[9]>>;
                   |                            |incorrectly.
     Ever Confirmed|0                           |1
      Known to fail|4.4.6, 4.6.3, 4.7.2         |4.3.5, 4.4.5, 4.8.0

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2013-01-17 08:52:25 UTC ---
Actually it is not the multiplication that goes wrong.  In fact the code looks
correct before expand.  Turning off TER (-fno-tree-ter) will work around this
expand issue though.