http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49600
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2011-07-04 13:42:00
UTC ---
Here is the testcase:
---
long int seedi;
long lo;
double ran() {
long hi;
long test;
hi = seedi / 127773L;
test = 16807L * lo - 2836L * hi;
if (test > 0) {
seedi = test;
}
return ( (float) seedi / 2147483647L);
}
---
It failed at -O3 -funroll-loops -msse2 -mfpmath=sse -ffast-math -mtune=XXX,
where XXX is a new x86 optimization we are working on.
