another compiler better than gcj ?

Wed Oct 24 05:52:00 GMT 2001

Bryce McKinlay writes:
 > Anthony Green wrote:
 > 
 > >Bryce wrote:
 > >
 > >>Wouldn't the best solution for x86 integer divides be to just emit
 > >>something like:
 > >>
 > >>if (__builtin_expect (divisor== 0), false)
 > >> _Jv_ThrowDivideByZero()
 > >>else
 > >> .. do divide ..
 > >>
 > >
 > >Well, there's usually another goofy case we need to watch for. See _Jv_divI
 > >and friends in prims.cc. Do we want to put all of these tests inline?
 > >
 > 
 > On x86 at least, I don't think the special case is neccessary because 
 > the CPU's behaviour matches the Java spec anyway.
No it doesn't. There is some code in the exception handler that fixes
up the division in that case.
Andrew.