Why not add two lines to make it:
> 
> #define DEF_RTL_EXPR(w,x,y,z) w
> 
> enum rtx_code
> {
	___rtx_code_max = 16383,
	___rtx_code_min = -1,
> #include "rtl.def"
> }
> 
> #undef DEF_RTL_EXPR
> #define DEF_RTL_EXPR ...

That should stretch the enum to 16 bits...
(hopefully is doesn't need to be 32 bits somewhere else!)

	David

-- 
David Laight: david@l8s.co.uk