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

[tkoenig at gcc dot gnu dot org]

------- Additional Comments From tkoenig at gcc dot gnu dot org  2005-07-07 09:14 -------
This appears to be fixed now in mainline:

$ 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 crealf(c)+cimagf(c)<0;
}
$ gcc -S -O3 -fdump-tree-optimized complex-parts.c
$ tail -10 complex-parts.c.t82.optimized
  <unnamed type> D.2371;
  float cr.0;

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

}


$ gcc -v
Using built-in specs.
Target: ia64-unknown-linux-gnu
Configured with: ../gcc-4.1-20050702/configure --prefix=/home/zfkts --enable-
languages=c,f95
Thread model: posix
gcc version 4.1.0 20050702 (experimental)


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
      Known to work|                            |4.1.0
         Resolution|                            |FIXED


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