Motiejus Jakštys 6703c40f48 astgen: add func_fancy, noalias_bits, varargs, and callconv support in fnDecl ...

Implement several interconnected features for function declarations:

- noalias_bits: Track which parameters have the noalias keyword by setting
  corresponding bits in a uint32_t (supports up to 32 parameters)
- is_var_args: Detect ellipsis3 (...) token in parameter list
- is_noinline/has_inline_keyword: Detect noinline/inline modifiers
- callconv handling: Extract callconv_expr from fn_proto variants, create
  cc_gz sub-block, emit builtin_value for explicit callconv() or inline
- func_fancy instruction: When any of cc_ref, is_var_args, noalias_bits,
  or is_noinline are present, emit func_fancy instead of func/func_inferred
  with the appropriate FuncFancy payload layout
- fn_var_args: Track in AstGenCtx for body code that checks it
- BuiltinValue constants: Add all ZIR_BUILTIN_VALUE_* defines to zir.h
- addBuiltinValue helper: Emit extended builtin_value instructions

Generic tracking (any_param_used, ret_ty_is_generic, ret_body_param_refs)
is not yet implemented as it requires is_used_or_discarded support in
ScopeLocalVal scope lookups.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-13 23:42:15 +00:00

31 KiB

Raw Blame History

View Raw