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lang: rename signed integer types sN -> iN

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Surface rename of the signed integer family: s1..s64 become i1..i64
(u1..u64, usize, isize unchanged). 'string' keeps the s-prefix arm in
name classification; width parsing moves to the i-prefix arm next to
isize.

Internal TypeId tags follow the surface (.s8/.s16/.s32/.s64 ->
.i8/.i16/.i32/.i64), as do mono-key mangle fragments (ptr_i64,
tu_i64_bool) and all display/diagnostic formatting (i{d}).

Migrated in the same sweep: stdlib + examples + issue repros + FFI C
companions (shared symbol names like ffi_id_i64), expected
stdout/stderr/ir snapshots, specs.md, readme.md, CLAUDE.md/AGENTS.md,
implementation_plan.md, docs/, issue writeups. Vendored stb_image and
historical flow state left untouched.

zig build test: 426/426; examples suite: 595/595.
This commit is contained in:
agra
2026-06-12 09:31:53 +03:00
parent 515ecebea7
commit d8076b9333
1054 changed files with 6836 additions and 6839 deletions
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8
issues/0061-dead-code-after-terminator-stmt.md
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@@ -28,7 +28,7 @@ Expected: the dead statements are dropped (unreachable); the program compiles
and runs.
This blocked ERR E5.1: the canonical failable-closure form from the plan,
`closure((x) -> (s32, !) { raise error.X; return x; })`, has a dead `return x;`
`closure((x) -> (i32, !) { raise error.X; return x; })`, has a dead `return x;`
after the unconditional `raise` and tripped the verifier.
## Reproduction
@@ -37,7 +37,7 @@ Minimal (non-failable — the bug is general, not error-specific):
```sx
#import "modules/std.sx";
main :: () -> s32 { return 0; print("dead\n"); }
main :: () -> i32 { return 0; print("dead\n"); }
```
Failable facet (the form that blocked E5.1):
@@ -45,8 +45,8 @@ Failable facet (the form that blocked E5.1):
```sx
#import "modules/std.sx";
E :: error { Neg }
top :: (x: s64) -> (s64, !E) { raise error.Neg; return x; }
main :: () -> s32 { print("r={}\n", top(5) catch e 0); return 0; }
top :: (x: i64) -> (i64, !E) { raise error.Neg; return x; }
main :: () -> i32 { print("r={}\n", top(5) catch e 0); return 0; }
```
Both abort with "Terminator found in the middle of a basic block". A