Re: [patch] AVR: Support strict address space subset relations

пн, 17 авг. 2026 г. в 17:02, Georg-Johann Lay <[email protected]>:
>
> To date, each named address space is implemented as a subset
> of all the other address spaces, which allows code like
>
>     char read_char (const char *addr, bool in_flash)
>     {
>        return in_flash
>          ? *(const __flash char*) addr  // Read from program memory.
>          : *addr;                       // Read from RAM.
>     }
>
> even though __flash is not a subset of Generic.
>
> This patch introduces new target option -mstrict-addr-space-subsets
> which instructs avr_addr_space_subset_p to implement the address
> space subset relations like they actually are, i.e.
>
>     __memx > __flashx > __flash, __flash1, ..., __flash5
>     __memx > Generic
>
> Ok for trunk?

Ok.

Denis