ruby.git - The Ruby Programming Language

Age	Commit message (Collapse)	Author
2022-09-08	rb_str_concat_literals: use rb_str_buf_append	Jean Boussier
	That's about 1.30x faster. Notes: Merged: https://github.com/ruby/ruby/pull/6334
2022-07-25	rb_str_buf_append: add a fast path for ENC_CODERANGE_VALID	Jean Boussier
	If the RHS has valid encoding, and both strings have the same encoding, we can use the fast path. However we need to update the LHS coderange. ``` compare-ruby: ruby 3.2.0dev (2022-07-21T14:46:32Z master cdbb9b8555) [arm64-darwin21] built-ruby: ruby 3.2.0dev (2022-07-25T07:25:41Z string-concat-vali.. 11a2772bdd) [arm64-darwin21] warming up... \| \|compare-ruby\|built-ruby\| \|:-------------------\|-----------:\|---------:\| \|binary_concat_7bit \| 554.816k\| 556.460k\| \| \| -\| 1.00x\| \|utf8_concat_7bit \| 556.367k\| 555.101k\| \| \| 1.00x\| -\| \|utf8_concat_UTF8 \| 412.555k\| 556.824k\| \| \| -\| 1.35x\| ``` Notes: Merged: https://github.com/ruby/ruby/pull/6163
2022-07-21	string.c: use str_enc_fastpath in TERM_LEN	Jean Boussier
	Not having to fetch the rb_encoding save a significant amount of time. Additionally, even when we have to fetch it, we can do it faster using `ENCODING_GET` rather than `rb_enc_get`. ``` compare-ruby: ruby 3.2.0dev (2022-07-19T08:41:40Z master cb9fd920a3) [arm64-darwin21] built-ruby: ruby 3.2.0dev (2022-07-21T11:16:16Z faster-buffer-conc.. 4f001f0748) [arm64-darwin21] warming up... \| \|compare-ruby\|built-ruby\| \|:---------------------\|-----------:\|---------:\| \|binary_concat_utf8 \| 510.580k\| 565.600k\| \| \| -\| 1.11x\| \|binary_concat_binary \| 512.653k\| 571.483k\| \| \| -\| 1.11x\| \|utf8_concat_utf8 \| 511.396k\| 566.879k\| \| \| -\| 1.11x\| ``` Notes: Merged: https://github.com/ruby/ruby/pull/6160
2022-07-19	rb_str_buf_append: fastpath to str_buf_cat	Jean Boussier
	If the LHS is ASCII compatible and the RHS is 7BIT we can directly concat without being concerned about anything else. Benchmark: ``` compare-ruby: ruby 3.2.0dev (2022-07-12T15:01:11Z master 71aec68566) [arm64-darwin21] built-ruby: ruby 3.2.0dev (2022-07-13T10:13:53Z faster-buffer-conc.. a04c10476d) [arm64-darwin21] warming up... \| \|compare-ruby\|built-ruby\| \|:---------------------\|-----------:\|---------:\| \|binary_append_utf8 \| 385.315k\| 573.663k\| \| \| -\| 1.49x\| \|binary_append_binary \| 446.579k\| 574.898k\| \| \| -\| 1.29x\| \|utf8_append_utf8 \| 430.936k\| 573.394k\| \| \| -\| 1.33x\| ``` Note that in the benchmark, the RHS always have a precomputed coderange. So the benchmark never enter the slowpath of having to scan the RHS. However it's extremly likely that we'll end up scanning it anyway in rb_enc_cr_str_buf_cat Notes: Merged: https://github.com/ruby/ruby/pull/6120
2022-07-06	vm_opt_ltlt: call rb_str_buf_append directly if RHS is a String	Jean Boussier
	`rb_str_concat` does a lot of type checking we can easily bypass. ``` \| \|compare-ruby\|built-ruby\| \|:--------------\|-----------:\|---------:\| \|string_concat \| 362.007k\| 398.965k\| \| \| -\| 1.10x\| ``` Notes: Merged: https://github.com/ruby/ruby/pull/6095