Re: [sdcc-devel] LTO I have done in recent 4 months

[Oleg E. <ole...@t-...>]

On Fri, 2024-08-16 at 17:10 +0800, 月明风清 via sdcc-devel wrote:
> 
> Acording to my work requirement, a small 8-bit mcu with 9bit RAM addr 13bit ROM addr，without banking.
> I use SDCC and  gputils for it. I have tried a lot of. 
> Recently, I did 2 LTO pass in gputils's linker:
> 1) remove unused global variable (initialized or uninitialized).
> 2) Reuse temporary ram variable accross different functions. 
> In this pass , I  construct the call-graph with main、intterrupt0、interrupt1 as the root. when two functions are in one call-graph, they can share compiler allocated global ram variables.
> Great, it works.
> 
> 

Wow, congratulations.  I wish we had this working for other backends of
SDCC.

Best regards,
Oleg Endo