ruby/benchmark/vm_dstr_nil.rb

i = 0
x = y = nil
while i<6_000_000 # benchmark loop 2
  i += 1
  str = "foo#{x}bar#{y}baz"
end
Optimize dynamic string interpolation for symbol/true/false/nil/0-9 This provides a significant speedup for symbol, true, false, nil, and 0-9, class/module, and a small speedup in most other cases. Speedups (using included benchmarks): :symbol :: 60% 0-9 :: 50% Class/Module :: 50% nil/true/false :: 20% integer :: 10% [] :: 10% "" :: 3% One reason this approach is faster is it reduces the number of VM instructions for each interpolated value. Initial idea, approach, and benchmarks from Eric Wong. I applied the same approach against the master branch, updating it to handle the significant internal changes since this was first proposed 4 years ago (such as CALL_INFO/CALL_CACHE -> CALL_DATA). I also expanded it to optimize true/false/nil/0-9/class/module, and added handling of missing methods, refined methods, and RUBY_DEBUG. This renames the tostring insn to anytostring, and adds an objtostring insn that implements the optimization. This requires making a few functions non-static, and adding some non-static functions. This disables 4 YJIT tests. Those tests should be reenabled after YJIT optimizes the new objtostring insn. Implements [Feature #13715] Co-authored-by: Eric Wong <e@80x24.org> Co-authored-by: Alan Wu <XrXr@users.noreply.github.com> Co-authored-by: Yusuke Endoh <mame@ruby-lang.org> Co-authored-by: Koichi Sasada <ko1@atdot.net> 2021-11-19 02:10:20 +03:00			`i = 0`
			`x = y = nil`
			`while i<6_000_000 # benchmark loop 2`
			`i += 1`
			`str = "foo#{x}bar#{y}baz"`
			`end`