Measure speed regression of a range of char in complex regexp
The measurement is using the code from chromium:977003

To measure
python -u tools/run_perf.py --binary-override-path  out/x64.release/d8 \
  test/js-perf-test/RegExp.json

Run on three setting:
a. m74 based on tag 7.4.301
b. trunk (m77)
c. apply cl 1674851 on trunk

ComplexCaseInsensitiveTest-RegExp
Score is better if higher
		Score	imp %	comp to m74
m74		22910
		23430
		23360
Trunk (m77)	15190	66.30%
		15710	67.05%
		15570	66.65%
CL 1674851	24590	161.88%	107.33%
		24690	157.16%	105.38%
		24200	155.43%	103.60%

Bug: chromium:977003

Change-Id: I7756f4739c44a07949103650565d1ca902e1b7ca
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1679651Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62449}