perf(lang): Reuse generic dependency arguments

fccaefc741632447e52a9af467e846ec165878d7dd5184121ad8fd7b7f91452c 
Generic call arguments already live in the resolver arena. Store that canonical slice on dependency edges instead of allocating and interning a duplicate slice.
Alexis Sellier committed ago 1 parent 5d2b63a3
lib/std/lang/resolver.rad +1 -6
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    caller: ?*mut Symbol,
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    callee: *mut Symbol,
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    args: *[*Type],
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    fnType: *FnType,
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) {
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    let a = alloc::arenaAllocator(&mut self.arena);
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    let mut storedArgs: *mut [*Type] = &mut [];
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    for arg in args {
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        storedArgs.append(allocType(self, *arg), a);
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    }
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    let dependency = try! alloc::alloc(
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        &mut self.arena,
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        @sizeOf(GenericFnDependency),
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        @alignOf(GenericFnDependency),
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    ) as *mut GenericFnDependency;
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    set *dependency = GenericFnDependency {
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        caller,
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        callee,
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        args: &storedArgs[..],
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        args,
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        site: node,
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        next: self.genericFnDependencies,
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    };
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    set self.genericFnDependencies = dependency;
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    setNodeSymbol(self, node, callee);