basic block reordering + java

Sat Sep 22 08:43:00 GMT 2001

> With basic block reordering, we often see code from gcj that ends in...
>> .L20:
> call _Jv_ThrowNullPointerException
> .L21:
> call _Jv_ThrowNullPointerException
> .L22:
> call _Jv_ThrowNullPointerException
> .L23:
> call _Jv_ThrowNullPointerException
> .L24:
> call _Jv_ThrowNullPointerException
> .L25:
> call _Jv_ThrowNullPointerException
> .L26:
> call _Jv_ThrowNullPointerException
>> Is there an easy way for GCC to merge identical blocks?
Oh yes, all you need is to modify crossjumping to add fake "noreturn"
edges and crossjump over them.
I can try to get that working later, but right now I am quite busy by other
thinks.
Honza