Users on CPUs without AES-NI (Nehalem i7-860, pre-2010 Intel Macs) or
without SSSE3 (AMD Phenom II) crashed at launch with SIGILL. The
global `-C target-feature=+aes,+ssse3` was kept after the #353/#343
x86-64-v3 incident on the belief that the aes crate's cpufeatures
runtime check would protect CPUs without AES-NI — but a compile-time
target feature makes cpufeatures compile its check to a constant, so
the AES-NI intrinsics ran unconditionally (credentials AES-GCM decrypt
at startup), and +ssse3 let LLVM autovectorize anywhere, breaking
Phenom II. Measured on the qbz-cmaf hot path (Ctr128BE<Aes128>
apply_keystream, 256 MB, release): 2145 MB/s compiled-in vs 2162 MB/s
runtime-dispatched, identical output — the flags bought nothing on
capable CPUs. Removed from .cargo/config.toml, all dev/build scripts
and the release/build workflows; old CPUs now get the software AES
fallback instead of a crash.
Fixes#549
cc
Slint cannot split the .slint compilation across crates, but a Slint LIBRARY
crate exposes its generated Rust types to dependent crates (verified with a
minimal proof). So:
- NEW crate `qbz-ui` (lib): owns the whole .slint tree + build.rs + bundled
translations; `slint::include_modules!()` + the generated types (AppWindow,
MiniPlayerWindow, all globals/structs) are re-exported. Translation domain is
now `qbz-ui` (the .po files renamed accordingly).
- `qbz-slint` (bin) -> renamed to `qbz` (package + `[[bin]] name = "qbz"`),
reclaiming the binary name from the retired Tauri app. It depends on `qbz-ui`
and does `pub use qbz_ui::*;` so existing `crate::AppWindow` / `crate::*State`
references resolve unchanged.
This splits the single ~20 GB rustc into two crates (UI/codegen vs the 75k LOC
of logic) — the foundation for lower build peak, incremental caching, and the
upcoming per-feature crate extraction.
Also fixed for the move: qbz-i18n bundled-.po include paths, the font/WGSL
`include_bytes!`/`include_str!` paths (-> ../../qbz-ui/ui/), workspace members,
dev scripts (`-p qbz`), and the CI workflows. `cargo check -p qbz` is green.
cc
Add scripts/slint-dev-fast.sh: a DEBUG (non-release) build for quick visual
iteration — opt-level 0 so the giant Slint-generated module skips the heavy
LLVM passes, plus the mold linker, no debuginfo, and the nightly parallel
frontend. It builds into target/debug, separate from the release cache.
slint-dev.sh (release, kept for perf measurement) gains the mold linker and
bumps the frontend threads 8 -> 16 — both only cut compile time, the optimised
binary is unchanged.
cc
slint-dev.sh runs qbz-slint via 'cargo +nightly run --release -Z threads', splitting the serial compile of the Slint-generated module across cores while producing an identical optimized release binary (no cranelift). RUSTFLAGS re-lists the AES-NI features from .cargo/config.toml since RUSTFLAGS overrides rather than merges it.
cc
vicrodh