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compiler: raise the bar for backend contributions

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Andrew Kelley 2025-07-13 12:53:46 -07:00
parent 5a8acc9115
commit 2f3cd175d3
1 changed files with 9 additions and 3 deletions
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src/target.zig
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@ -868,10 +868,16 @@ pub inline fn backendSupportsFeature(backend: std.builtin.CompilerBackend, compt
else => false, else => false,
}, },
.separate_thread => switch (backend) { .separate_thread => switch (backend) {
// Supports a separate thread but does not support N separate
// threads because they would all just be locking the same mutex to
// protect Builder.
.stage2_llvm => false, .stage2_llvm => false,
.stage2_c, .stage2_wasm, .stage2_x86_64 => true, // Same problem. Frontend needs to allow this backend to run in the
// TODO: most self-hosted backends should be able to support this without too much work. // linker thread.
else => false, .stage2_spirv => false,
// Please do not make any more exceptions. Backends must support
// being run in a separate thread from now on.
else => true,
}, },
}; };
} }