array_merge() — internals

array_merge() — internals

Where it lives

• Signature: src/builtins/array/array_merge.rs
• Lowering: src/codegen/lower_inst/builtins/arrays.rs:846 (lower_array_merge)
• Function symbol: lower_array_merge()

Lowering notes

• Lowers array_merge() for two compatible indexed arrays with 8-byte payload slots.

Runtime helpers

The following runtime helpers are referenced:

• __rt_array_diff
• __rt_array_diff_refcounted

Signature summary

function array_merge(...$arrays): array

What the type checker enforces

• Arity: takes no arguments.
• Variadic: collects excess arguments into $arrays.

Eval interpreter (magician)

• Declaration: crates/elephc-magician/src/interpreter/builtins/array/array_merge.rs (eval_builtin!)
• Dispatch hooks: direct, values
• Variadic: collects excess arguments into $arrays.

Cross-references

• User reference for array_merge()