https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68843
--- Comment #5 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
and that's the next oddity:
cat t1.c
int test (double x, double y)
{
int r;
asm ("fist %0\t# %0 %1 %2" : "=r" (r) : "r" (x), "t" (y));
return r;
}
gcc -S t1.c -m32
t1.c: In function ‘test’:
t1.c:4:3: error: output operand 0 must use ‘&’ constraint
asm ("fist %0\t# %0 %1 %2" : "=r" (r) : "r" (x), "t" (y));
^
but there is no reason for this, because %0 is %eax or something
even "=a" (r) triggers this.
