go/src/cmd/cover
Koichi Shiraishi 88b8a16089 cmd/cover: replace code using optimized golang.org/x/tools/cover
After CL 179377, this change deletes all the prior cmd/cover code
and instead vendors and type aliases code using the significantly
optimized  golang.org/x/tools/cover, which sped up ParseProfiles by
manually parsing profiles instead of a regex. The speed up was:

name         old time/op   new time/op   delta
ParseLine-12 2.43µs ± 2%   0.05µs ± 8%   -97.98% (p=0.000 n=10+9)

name         old speed     new speed       delta
ParseLine-12 42.5MB/s ± 2% 2103.2MB/s ± 7% +4853.14% (p=0.000 n=10+9)

Fixes #32211.

Change-Id: Ie4e8be7502f25eb95fae7a9d8334fc97b045d53f
Reviewed-on: https://go-review.googlesource.com/c/go/+/249759
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-03-14 13:09:57 +00:00
..
testdata all: introduce and use internal/execabs 2021-01-21 19:10:18 +00:00
cover.go all: update to use os.ReadFile, os.WriteFile, os.CreateTemp, os.MkdirTemp 2020-12-09 19:12:23 +00:00
cover_test.go all: update to use os.ReadFile, os.WriteFile, os.CreateTemp, os.MkdirTemp 2020-12-09 19:12:23 +00:00
doc.go
func.go all: introduce and use internal/execabs 2021-01-21 19:10:18 +00:00
html.go all: update to use os.ReadFile, os.WriteFile, os.CreateTemp, os.MkdirTemp 2020-12-09 19:12:23 +00:00
pkgname_test.go cmd/cover: include a package name in the HTML title 2020-04-30 03:58:01 +00:00
profile.go cmd/cover: replace code using optimized golang.org/x/tools/cover 2021-03-14 13:09:57 +00:00