From: muraken@... Date: 2020-11-06T16:46:45+00:00 Subject: [ruby-core:100729] [Ruby master Feature#17291] Optimize __send__ call Issue #17291 has been updated by mrkn (Kenta Murata). The new benchmark result is below: ``` # Iteration per second (i/s) | |compare-ruby|built-ruby| |:--------------------|-----------:|---------:| |vm_send_sym | 18.265M| 113.593M| | | -| 6.22x| |vm_send_var | 17.750M| 31.974M| | | -| 1.80x| |vm_send_var_alt | 3.955M| 7.499M| | | -| 1.90x| |vm_send_sym_missing | 7.135M| 8.982M| | | -| 1.26x| |vm_send_var_missing | 7.271M| 7.454M| | | -| 1.03x| ``` ---------------------------------------- Feature #17291: Optimize __send__ call https://bugs.ruby-lang.org/issues/17291#change-88373 * Author: mrkn (Kenta Murata) * Status: Assigned * Priority: Normal * Assignee: matz (Yukihiro Matsumoto) ---------------------------------------- I made a patch to optimize a `__send__` call. This optimization replaces a `__send__` method call with a call of the method whose name is the first argument of `__send__` method. The patch is available in [this pull-request](https://github.com/ruby/ruby/pull/3720). By this change, the redefined `__send__` method is no longer called when it is called by a symbol method name. I guess it is no problem because the following warning message is displayed for a long time. $ ruby -e 'def __send__; end' -e:1: warning: redefining `__send__' may cause serious problems This proposal introduces two new instructions: `sendsym` and `opt_sendsym_without_block`. These instructions handle the cases that the first argument of `__send__` method is not a symbol literal. I think I can combine these two instructions into one if prefered. This proposal includes the change proposed in #17288. I'll mark it as a duplicate of this proposal. I don't handle `send` method in this proposal. The reason is that we need to examine the redefinition of `send` method in the instruction execution time. I want to discuss only `__send__` method in this ticket. The benchmark result is below: ``` # Iteration per second (i/s) | |compare-ruby|built-ruby| |:----------------|-----------:|---------:| |vm_send_sym | 18.001M| 112.208M| | | -| 6.23x| |vm_send_var | 17.779M| 30.922M| | | -| 1.74x| |vm_send_var_alt | 3.817M| 6.817M| | | -| 1.79x| ``` -- https://bugs.ruby-lang.org/ Unsubscribe: