[Bug target/55721] -mabi=64 compilation results in unknown UNSPEC note

["sje at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55721

--- Comment #12 from Steve Ellcey <sje at gcc dot gnu.org> 2013-01-09 21:52:59 UTC ---
Here is another testcase that looks different then the others, it is cutdown
from newlib/libm/math/k_rem_pio2.c.

% cat bug3.c
static const int init_jk[] = {2,3,4,6};
double twon24  =  5.96046447753906250000e-08;
int __kernel_rem_pio2(double *x, double *y, int e0, int nx, int prec) 
{
    int jz,jx,jv,jp,jk,carry,n,iq[20],i,j,k,m,q0,ih;
    double z,fw,f[20],fq[20],q[20];
    jk = init_jk[prec];
    jz = jk;
    for(i=0,j=jz,z=q[jz];j>0;i++,j--) {
        fw = (double)((int)(twon24* z));
    }
    switch(prec) {
        case 0:
            y[0] =  fq[0]; y[1] =  fq[1]; y[2] =  fw;
    }
}

% gcc -mips64r2 -mabi=64 -c -O2 -g bug3.c

bug3.c: In function '__kernel_rem_pio2':
bug3.c:3:5: note: non-delegitimized UNSPEC unknown (230) found in variable
location
 int __kernel_rem_pio2(double *x, double *y, int e0, int nx, int prec) 
     ^
bug3.c:3:5: note: non-delegitimized UNSPEC unknown (230) found in variable
location