------- Comment #5 from howarth at nitro dot med dot uc dot edu 2007-12-24
18:26 -------
Would...
/* { dg-do compile } */
/* { dg-options "-O2" } */
long foo(long x)
{
return -(x == 0);
}
long bar(long x)
{
long t = __builtin_clzl(x);
return -(t>>5);
}
/* { dg-final { scan-assembler-not "cntlzw" } } */
...be an acceptable revision then. This passes on powerpc-apple-darwin9 with
gcc trunk. However I wasn't sure if the size of the shift on t in the return
statement didn't need to be changed (or eliminated)?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29056
