a peculiar fpload problem on an inferior processor

Amker.Cheng amker.cheng@gmail.com
Fri May 7 11:04:00 GMT 2010


>  It is possible.  Your expander can handle it before reload; to handle it
> during and after reload, you need to implement a TARGET_SECONDARY_RELOAD hook.
>
> http://gcc.gnu.org/onlinedocs/gccint/Register-Classes.html#index-TARGET_005fSECONDARY_005fRELOAD-3974
>
Thanks Dave, It works, but I found that reload is not the only pass
which might generate fpload/fpstore instructions.
I am working with GCC 4.4(mips), there is function(mips_emit_move),
which is called in many pass after register allocation
and might generate fpload/fpstore.
For example, in pass pro_and_epilogue, it generates load/store for fpu
register which saved by function prologue/epilogue.

Seems I have to track down all calling of this function and make sure
it works in my way.

Thanks.

-- 
Best Regards.



More information about the Gcc mailing list