[Libre-soc-bugs] [Bug 1229] fosdem2024 llvm simple-v

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=1229

--- Comment #9 from Jacob Lifshay <programmerjake at gmail.com> ---
(In reply to Luke Kenneth Casson Leighton from comment #5)
> attributes will make programmer's lives hell (unreadable crap).

actually, attributes have gotten a whole lot better recently, since C/C++
introduced a new attribute syntax:
e.g.:
[[noreturn]] void f() {
    abort();
}

instead of:
void f() __attribute__((noreturn));
void f() {
    abort();
}

so I think something like this could be good:

say you want a vector with MAXVL=12, VL=vl, SUBVL=3, and element type float:

[[sv_vec(12)]] float my_vector[vl][3];

or a fixed-length vector with MAXVL=VL=21, SUBVL=1, and element type uint16_t:

[[sv_vec]] uint16_t my_vector2[21];

the [[sv_vec]] could also go at the end if you prefer that (C/C++ lets you put
it a few different places):

uint16_t my_vector2[21] [[sv_vec]];

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