$ 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
