32edb9b55d
Prior to this commit, the AIR arg instruction kept a reference to a ZIR string index for the corresponding parameter name. This is used by DWARF emitting code. However, this is a design flaw because we want AIR objects to be independent from ZIR. This commit saves the parameter names into memory managed by `Module.Fn`. This is sub-optimal because we should be able to get the parameter names from the ZIR for a function without having them redundantly stored along with `Fn` memory. However the current way that ZIR param instructions are encoded does not support this case. They appear in the same ZIR body as the function instruction, just before it. Instead, they should be embedded within the function instruction, which will allow this TODO to be solved. That improvement is too big for this commit, however. After this there is one last dependency to untangle, which is for inline assembly. The issue for that is #10784.
A general-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
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