🚀 go-pugleaf

The current code produced by gcc for comparing a long long (or
unsigned long long) to 0 is suboptimal for the sparc.  Currently the
compiler emits code like:

	cmp %o0, 0
	bne 1f
	<delay0>
	cmp %o1, 0
	be <zero_label>
	<delay1>
1:	b <non_zero_label>
	<delay2>

<zero_label>:
 	...

<non_zero_label>:
	...


Much better would be:

	orcc %o0, %o1, %g0
	bne <non_zero_label>
	<delay'>
<zero_label>:
	....
<non_zero_label>:
	...