Files
sx/examples/1212-ffi-04-fp-struct.sx
agra 4e942b5373 test: migrate examples to XXXX-category-name layout + split expected streams
Rename all example tests/companions to the XXXX-category-test-name scheme
(per-category 100-blocks: basic 0010, types 0100, ... errors 1000,
diagnostics 1100, ffi 1200, ffi-objc 1300, ffi-jni 1400, vectors 1500,
platform 1600). Companions and dir/C fixtures move in lockstep with their
parent test; #import/#source/#include paths rewritten to match.

Expected output now lives in examples/expected/ (a sibling dir of the
tests) split into three streams per the new convention:
  <name>.exit / <name>.stdout / <name>.stderr  (+ optional <name>.ir)

run_examples.sh rewritten: scans examples/ and issues/ for an
expected/<name>.exit marker, captures stdout and stderr separately (no
more 2>&1), compares each stream + exit + optional IR snapshot.

Behavior validated unchanged: every renamed test reproduces its prior
merged output + exit (diffs limited to file paths/basenames embedded in
diagnostics + traces, which correctly reflect the new names). Suite:
292 passed, 0 failed. 50-smoke.sx split + issue relocation + docs follow
in subsequent commits.
2026-06-01 19:05:15 +03:00

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// Phase 0 baseline (PLAN-FFI.md step 0.4): focused FP-aggregate (HFA)
// FFI test. All-float / all-double aggregates of ≤4 fields stay as
// struct values in LLVM and pass through the float register file
// (AAPCS64 v0..v3, SysV AMD64 xmm0..xmm7). Distinct from the int
// register-coercion paths (i64 / [2 x i64]).
//
// FQuad — 16 B, four f32 (same slot as ffi-02's Vec4f)
// DQuad — 32 B, four f64 (UIEdgeInsets-shape HFA — the
// f32-vs-f64 landmine from this session)
//
// Already nominally covered by ffi-02's Vec4f, but pinning it as a
// focused single-file test means a future ABI rule change that
// breaks the FP path fails *this* test directly without a noisy
// drag-in from the multi-shape baseline.
#import "modules/std.sx";
#import c {
#source "1212-ffi-04-fp-struct.c";
};
FQuad :: struct { a: f32; b: f32; c: f32; d: f32; }
DQuad :: struct { a: f64; b: f64; c: f64; d: f64; }
ffi_fquad_make :: (a: f32, b: f32, c: f32, d: f32) -> FQuad #foreign;
ffi_fquad_reverse :: (v: FQuad) -> FQuad #foreign;
ffi_fquad_sum :: (v: FQuad) -> f32 #foreign;
ffi_dquad_make :: (a: f64, b: f64, c: f64, d: f64) -> DQuad #foreign;
ffi_dquad_reverse :: (v: DQuad) -> DQuad #foreign;
ffi_dquad_sum :: (v: DQuad) -> f64 #foreign;
main :: () -> s32 {
// ── FQuad (16 B, 4×f32 HFA) ────────────────────────────────────
f := ffi_fquad_make(1.0, 2.0, 3.0, 4.0);
print("fquad make = ({}, {}, {}, {})\n", f.a, f.b, f.c, f.d);
g := ffi_fquad_reverse(f);
print("fquad rev = ({}, {}, {}, {})\n", g.a, g.b, g.c, g.d);
print("fquad sum = {}\n", ffi_fquad_sum(f));
// ── DQuad (32 B, 4×f64 HFA — UIEdgeInsets-shape) ──────────────
d := ffi_dquad_make(1.5, 2.5, 3.5, 4.5);
print("dquad make = ({}, {}, {}, {})\n", d.a, d.b, d.c, d.d);
e := ffi_dquad_reverse(d);
print("dquad rev = ({}, {}, {}, {})\n", e.a, e.b, e.c, e.d);
print("dquad sum = {}\n", ffi_dquad_sum(d));
0;
}