b22a714840
The JIT that runs makepad apps from source: lexer, front end, type checker, lazy borrow checker (Gandalf; `--check-first` opts in), codegen, session and warm/cold caches keyed by compiler stamp, provided crates bound late, startup images, live patching. User-facing name is `makepad run` (binary `makepad`, MAKEPAD_RUN_* env, ~/.makepad-run); libs/relax stays the internal library name. `makepad check` reports rustc-style diagnostics with rustc error codes and checks a whole workspace (`--workspace`). Runs on macOS, Linux, Windows and Android. makepad-remote: one tool schema for apps and the WM (app/1): grabs, captures, traces, frame profiles and tweaks. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
26 lines
1.1 KiB
Rust
26 lines
1.1 KiB
Rust
// u64/i64/usize/isize overflowing/checked/saturating_mul through intrinsics_int::mul_hi
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// (umulh/smulh, mul/imul rdx). rustc prints the same hash: 10587128077786417075
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#[test]
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fn mul_overflow() {
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let us: [u64; 8] = [0, 1, 2, 3, 0xffff_ffff, 0x1_0000_0000, u64::MAX / 3, u64::MAX];
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let is: [i64; 10] = [0, 1, -1, 2, -2, 0xffff_ffff, -0x1_0000_0000, i64::MAX, i64::MIN, i64::MIN / 3];
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let mut h = 0u64;
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for &a in us.iter() {
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for &b in us.iter() {
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let (r, o) = std::hint::black_box(a).overflowing_mul(b);
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h = h.rotate_left(3) ^ r ^ (o as u64);
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h ^= a.checked_mul(b).unwrap_or(7);
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h ^= (a as usize).saturating_mul(b as usize) as u64;
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}
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}
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for &a in is.iter() {
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for &b in is.iter() {
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let (r, o) = std::hint::black_box(a).overflowing_mul(b);
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h = h.rotate_left(3) ^ (r as u64) ^ (o as u64);
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h ^= a.checked_mul(b).unwrap_or(7) as u64;
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h ^= (a as isize).saturating_mul(b as isize) as u64;
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}
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}
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println!("mulhi hash {}", h);
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}
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