unicode/utf8: refactor benchmarks for FullRune function

BenchmarkFullASCIIRune tests the performance of function utf8.FullRune,
which will be inlined in BenchmarkFullASCIIRune. Since the return value
of FullRune is not referenced, it will be removed as dead code.

This CL makes the FullRune functions return value referenced by a global
variable to avoid this point. In addition, this CL adds one more benchmark
to cover more code paths, and puts them together as sub benchmarks of

Change-Id: I6e79f4c087adf70e351498a4b58d7482dcd1ec4a
Reviewed-on: https://go-review.googlesource.com/c/go/+/233979
Run-TryBot: eric fang <eric.fang@arm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
1 file changed
tree: 650d0e2e6974d1aa336341f076b38979983418f0
  1. .gitattributes
  2. .github/
  3. .gitignore
  9. README.md
  10. SECURITY.md
  11. api/
  12. doc/
  13. favicon.ico
  14. lib/
  15. misc/
  16. robots.txt
  17. src/
  18. test/

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