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Omit local variable definitions only used with LOCAL_PTR()

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Nobuyoshi Nakada 2025-07-17 19:42:41 +09:00
parent 10a2688fc4
commit bb8924240d
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1 changed files with 8 additions and 3 deletions
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11
tool/mk_builtin_loader.rb
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@ -282,16 +282,21 @@ def generate_cexpr(ofile, lineno, line_file, body_lineno, text, locals, func_nam
# Avoid generating fetches of lvars we don't need. This is imperfect as it
# will match text inside strings or other false positives.
local_candidates = text.scan(/[a-zA-Z_][a-zA-Z0-9_]*/)
local_ptrs = []
local_candidates = text.gsub(/\bLOCAL_PTR\(\K[a-zA-Z_][a-zA-Z0-9_]*(?=\))/) {
local_ptrs << $&; ''
}.scan(/[a-zA-Z_][a-zA-Z0-9_]*/)
f.puts '{'
lineno += 1
# locals is nil outside methods
locals&.reverse_each&.with_index{|param, i|
next unless Symbol === param
next unless local_candidates.include?(param.to_s)
param = param.to_s
lvar = local_candidates.include?(param)
next unless lvar or local_ptrs.include?(param)
f.puts "VALUE *const #{param}__ptr = (VALUE *)&ec->cfp->ep[#{-3 - i}];"
f.puts "MAYBE_UNUSED(const VALUE) #{param} = *#{param}__ptr;"
f.puts "MAYBE_UNUSED(const VALUE) #{param} = *#{param}__ptr;" if lvar
lineno += 1
}
f.puts "#line #{body_lineno} \"#{line_file}\""