989e18b760
Replace the bare-paren tuple grammar with explicit, position-unambiguous
forms, mirroring how structs work:
type `(A, B)` -> `Tuple(A, B)` (named keeps `:`)
value `(a, b)` -> `.(a, b)` (named uses `=`)
typed (new) -> `Tuple(A, B).(a, b)` (like `Point.{...}`)
failable `-> (T, !)` -> `-> T !`
`-> (T1, T2, !)`-> `-> Tuple(T1, T2) !` (channel outside Tuple)
Bare `(...)` is now grouping only, everywhere; a comma in bare parens is a
hard error with a migration hint. Grouping, function types `(A, B) -> R`,
param lists, lambdas, and match bindings are unaffected.
`Tuple(...)` is strictly a TYPE in every position (including `size_of` /
`type_info` args); a tuple VALUE comes only from `.(...)` (anonymous) or
`Tuple(...).(...)` (explicitly typed). A bare `Tuple(1, 2)` is a tuple
type with non-type elements -> rejected.
The ~110 tuple-bearing corpus files were migrated with a one-shot
AST-aware migrator (the `sx migrate` tool from the prior commit, removed
here). New examples: 0130 (new syntax), 0131 (typed construction), 1060
(named-tuple failable return). 1116 golden updated for the new hint text.
21 lines
693 B
Plaintext
21 lines
693 B
Plaintext
// ASM stream Phase E — multi-output asm that RUNS end-to-end on aarch64. Splits
|
|
// a value into low/high bytes via two value outputs, returned + destructured as
|
|
// a `(lo, hi)` tuple. The two outputs become an LLVM `{ i64, i64 }` struct =
|
|
// sx's tuple. aarch64-pinned via `.build`: executes on a matching host (exit
|
|
// reflects lo+hi), ir-only elsewhere.
|
|
split :: (x: u64) -> Tuple(lo: u64, hi: u64) {
|
|
return asm {
|
|
#string ASM
|
|
and %[l], %[x], #0xff
|
|
lsr %[h], %[x], #8
|
|
ASM,
|
|
[l] "=r" -> u64,
|
|
[h] "=r" -> u64,
|
|
[x] "r" = x,
|
|
};
|
|
}
|
|
main :: () -> i64 {
|
|
lo, hi := split(0x1234);
|
|
return xx (lo + hi); // 0x34 + 0x12 = 52 + 18 = 70
|
|
}
|