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>
27 lines
1.3 KiB
Rust
27 lines
1.3 KiB
Rust
// Unsigned division / remainder by constants (opt::div_by_const): multiply-high sequences
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// against the hardware divide. rustc prints the same hash: 10618254766196272890.
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#[inline(never)]
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fn f64s(x: u64) -> u64 {
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x / 3 ^ x % 3 ^ x / 6 ^ x % 7 ^ x / 10 ^ x % 10 ^ x / 1000 ^ x / 641 ^ x % 65521 ^ x / 7_000_000_007 ^ x % 0x8000_0000_0001 ^ x / 0xFFFF_FFFF_FFFF_FFFF ^ x / 64 ^ x % 4096
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}
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#[inline(never)]
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fn f32s(x: u32) -> u32 {
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x / 3 ^ x % 5 ^ x / 7 ^ x % 13 ^ x / 1000 ^ x % 65521 ^ x / 0xFFFF_FFFF ^ x / 16
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}
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#[inline(never)]
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fn f16s(x: u16) -> u16 { x / 6 ^ x % 9 ^ x / 255 }
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#[inline(never)]
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fn f8s(x: u8) -> u8 { x / 3 ^ x % 7 ^ x / 10 }
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#[test]
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fn t() {
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let mut h = 0u64;
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let mut s = 0x9e3779b97f4a7c15u64;
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let edges = [0u64, 1, 2, 3, 5, 6, 7, 9, 10, 641, 999, 1000, 65520, 65521, u32::MAX as u64, u32::MAX as u64 + 1, u64::MAX, u64::MAX - 1, 1 << 63, (1 << 63) - 1];
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for i in 0..200_000u64 {
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s ^= s << 13; s ^= s >> 7; s ^= s << 17;
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let x = if (i as usize) < edges.len() { edges[i as usize] } else if i % 3 == 0 { s >> (s % 64) } else { s };
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h = h.wrapping_mul(31) ^ f64s(x) ^ (f32s(x as u32) as u64) << 1 ^ (f16s(x as u16) as u64) << 2 ^ (f8s(x as u8) as u64) << 3;
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}
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println!("hash {}", h);
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assert_eq!(h, 10618254766196272890);
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}
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