Improve comment parse performance #245
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kou
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## Benchmark (Comparison with rexml 3.4.1)
```
$ benchmark-driver benchmark/parse_comment.yaml
Calculating -------------------------------------
rexml 3.4.1 master 3.4.1(YJIT) master(YJIT)
top_level 999.440 5.058k 922.416 3.340k i/s - 100.000 times in 0.100056s 0.019770s 0.108411s 0.029936s
in_doctype 1.063k 4.890k 980.498 3.341k i/s - 100.000 times in 0.094116s 0.020449s 0.101989s 0.029927s
after_doctype 638.321 1.304k 603.952 1.153k i/s - 100.000 times in 0.156661s 0.076710s 0.165576s 0.086748s
Comparison:
top_level
master: 5058.2 i/s
master(YJIT): 3340.5 i/s - 1.51x slower
rexml 3.4.1: 999.4 i/s - 5.06x slower
3.4.1(YJIT): 922.4 i/s - 5.48x slower
in_doctype
master: 4890.2 i/s
master(YJIT): 3341.5 i/s - 1.46x slower
rexml 3.4.1: 1062.5 i/s - 4.60x slower
3.4.1(YJIT): 980.5 i/s - 4.99x slower
after_doctype
master: 1303.6 i/s
master(YJIT): 1152.8 i/s - 1.13x slower
rexml 3.4.1: 638.3 i/s - 2.04x slower
3.4.1(YJIT): 604.0 i/s - 2.16x slower
```
- YJIT=ON : 1.90x - 3.62x faster
- YJIT=OFF : 2.04x - 5.06x faster
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Benchmark (Comparison with rexml 3.4.1)