| commit | 53773a5d0892be4489b4d5e91bbc8ae61000ada7 | [log] [tgz] |
|---|---|---|
| author | Than McIntosh <thanm@google.com> | Mon Oct 11 11:26:19 2021 -0400 |
| committer | Than McIntosh <thanm@google.com> | Wed Sep 28 11:50:58 2022 +0000 |
| tree | 0d137bcb30ce27cf331d396ba82fc983a3f19c35 | |
| parent | b32689f6c3156da19d469f35cc68fc155d401ef9 [diff] |
cmd/go: support new hybrid coverage instrumentation If GOEXPERIMENT=coverageredesign is in effect, introduce a new top-level '-cover' option to "go build" to turn on new-style hybrid code coverage instrumentation. Similarly, use the new instrumentation for "go test -cover". The main effects of "-cover" under the hood are to instrument files at the package level using cmd/cover and to pass additional options to the compiler when building instrumented packages. The previous workflow for "go tool -cover mypkg" would expand to a series of "go tool cover" commands (one per file) followed by a single package compilation command to build the rewritten sources. With the new workflow, the Go command will pass all of the Go files in a package to the cover tool as a chunk (along with a config file containing other parameters), then the cover tool will write instrumented versions of the sources along with another "output" config with info on coverage variable names for the the compiler. The Go command will then kick off the compiler on the modified source files, also passing in the config file generated by cmd/cover. Updates #51430. Change-Id: Id65621ff6a8c70a30168c1412c2d6f805ff3b9e7 Reviewed-on: https://go-review.googlesource.com/c/go/+/355452 TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Than McIntosh <thanm@google.com> Reviewed-by: Bryan Mills <bcmills@google.com>
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