[Bug middle-end/20434] New: pessimization of complex expression

["Thomas dot Koenig at online dot de" <gcc-bugzilla@gcc.gnu.org>]

$ cat complex-parts.c
#include <math.h>
#include <complex.h>

int main()
{
    float cr,ci;
    float complex c;
    foo(&cr,&ci);
    c = cr+I*ci;
    return creal(c)+cimag(c)<0;
}
$ gcc -S -O2 -fdump-tree-optimized complex-parts.c
$ tail -10 complex-parts.c.t66.optimized
  float D.2359;
  float cr.18;

<bb 0>:
  foo (&cr, &ci);
  return (double) (cr + 0.0) + (double) (ci + 0.0) < 0.0;

}


$ gcc -v
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../gcc-4.1/configure --prefix=/home/ig25 --enable-languages=c,f95
Thread model: posix
gcc version 4.1.0 20050311 (experimental)

-- 
           Summary: pessimization of complex expression
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: Thomas dot Koenig at online dot de
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20434