66bdc70bf1
Move examples/*.sx and their expected/ snapshots into per-category subfolders (examples/<category>/...). Folder = leading filename token, with ffi-objc/ffi-jni kept whole; filenames are unchanged. The corpus runner and LSP sweep now discover each category's expected/ dir, while issues/ stays flat. Example 1058's repo-root-relative companion import is made file-relative. Path strings embedded in 164 snapshots were regenerated (path-only changes). Test-layout docs in CLAUDE.md updated.
36 lines
1.5 KiB
Plaintext
36 lines
1.5 KiB
Plaintext
// A `Vector` lane count from a named const or a constant-foldable expression
|
|
// resolves to the SAME layout as a literal lane — DIRECT (param / return type)
|
|
// and via a type ALIAS. A 3-lane (named const `N`) and a 4-lane (const expr
|
|
// `M + 1`) prove the lane VALUE is folded, not fabricated: reading `.w` requires
|
|
// the 4-lane vector to actually have four lanes.
|
|
//
|
|
// Regression (issue 0083): the stateful Vector lane resolvers hand-rolled an
|
|
// `else => 0` switch, so a module-const lane (`Vector(N, f32)`) lowered a 0-lane
|
|
// `<0 x float>` and died in LLVM verification ("huge alignment values are
|
|
// unsupported"); a const-expr lane (`Vector(M + 1, f32)`) was rejected at parse.
|
|
// Both now fold through the single shared const-int evaluator
|
|
// (`program_index.evalConstIntExpr`) — the same one the array-dimension path
|
|
// uses — so a named-const / const-expr lane is identical to a literal lane.
|
|
#import "modules/std.sx";
|
|
|
|
N :: 3;
|
|
M :: 3;
|
|
|
|
LaneAlias :: Vector(N, f32); // ALIAS: 3-lane via named const.
|
|
ExprAlias :: Vector(M + 1, f32); // ALIAS: 4-lane via const expression.
|
|
|
|
mk3 :: () -> Vector(N, f32) { .[1.0, 2.0, 3.0] } // DIRECT named-const lane.
|
|
mk4 :: () -> Vector(M + 1, f32) { .[1.0, 2.0, 3.0, 4.0] } // DIRECT const-expr lane.
|
|
|
|
main :: () {
|
|
a := mk3();
|
|
print("direct3: {} {} {}\n", a.x, a.y, a.z);
|
|
b := mk4();
|
|
print("direct4: {} {} {} {}\n", b.x, b.y, b.z, b.w);
|
|
|
|
c : LaneAlias = .[5.0, 6.0, 7.0];
|
|
print("alias3: {}\n", c.z);
|
|
d : ExprAlias = .[5.0, 6.0, 7.0, 8.0];
|
|
print("alias4: {}\n", d.w);
|
|
}
|