Re: Patch: Updates on mips testcases

["H . J . Lu" <hjl at lucon dot org>]

On Sun, Jun 10, 2001 at 12:03:33AM +0930, Alan Modra wrote:
> On Fri, Jun 08, 2001 at 11:29:46PM -0700, H . J . Lu wrote:
> > +++ gas/mips/relax.s	Fri Jun  8 23:12:46 2001
> > @@ -0,0 +1,7 @@
> > +# Source file used to test relaxation.
> > +
> > +	.text
> > +foo:
> > +	move    $2, $3          # just something
> > +        .space  0x20000         # to make a 128kb loop body
> > +        beq     $2, $3, foo
> 
> This isn't exactly a failure of relaxation.  It's just that the branch
> offset is too big.
> 

1. You may see it when compiling certain version of gcc with -O0.
2. The IRIX assembler can handle it just fine. It is turned into

	bneq     $2, $3, bar
	jump to foo
bar:

Since beq is a macro, maybe we can do something about it. We could
do such a macro expansion unconditionally. But it would be nice to
detect when to do it.



H.J.