- benchmark: avoid buffers to avoid a memcpy
- build: keep frame pointers on macOS. There was some debug changes from
Zig 0.15 and this helps. Also, Apple actually requires/expects x29 to
always be a frame pointer.
- build/macos: force libSystem symbols instead of compiler-rt
- global: add InitOpts.tool so that ghostty-gen/bench can parse their
own actions in `+action`
- quirks: provide our own vectorized memset. see the comment for more
details why.
- synthetic: fix UB by accessing global.io before it was initialized
- terminal/hash_map: force inline for unique repr types. Zig 0.15
inlined and 0.16 doesn't, measured a huge slowdown in hyperlink
benchmarks.
- terminal: add explicit `@Vector` usage for storing a run of identical cells
as well as for scanning printable cells. This auto-vectorized in Zig
0.15 but not in Zig 0.16. This produces the same assembly.
- unicode: properties and LUT need power-of-two backing integer to avoid
bad LLVM codegen
