proto, runtime/protoiface, internal/impl: add fast-path Merge

Comparing -tags=protoreflect to fast-path:

name                              old time/op    new time/op    delta
pkg:google.golang.org/protobuf/internal/benchmarks goos:linux goarch:amd64
/Clone/google_message1_proto2-12    1.70µs ± 1%    0.30µs ± 1%  -82.64%  (p=0.001 n=7+7)
/Clone/google_message1_proto3-12    1.01µs ± 1%    0.19µs ± 1%  -80.77%  (p=0.000 n=7+8)
/Clone/google_message2-12            818µs ± 8%     141µs ± 6%  -82.78%  (p=0.000 n=8+8)
pkg:google.golang.org/protobuf/internal/benchmarks/micro goos:linux goarch:amd64
EmptyMessage/Clone-12               51.1ns ± 1%    39.3ns ± 3%  -23.03%  (p=0.000 n=7+8)
RepeatedInt32/Clone-12              24.5µs ± 1%     1.1µs ± 3%  -95.64%  (p=0.000 n=8+8)
Required/Clone-12                    978ns ± 1%     132ns ± 2%  -86.46%  (p=0.000 n=8+8)

name                              old alloc/op   new alloc/op   delta
pkg:google.golang.org/protobuf/internal/benchmarks goos:linux goarch:amd64
/Clone/google_message1_proto2-12    1.08kB ± 0%    0.74kB ± 0%  -31.85%  (p=0.000 n=8+8)
/Clone/google_message1_proto3-12      872B ± 0%      544B ± 0%  -37.61%  (p=0.000 n=8+8)
/Clone/google_message2-12            602kB ± 0%     411kB ± 0%  -31.65%  (p=0.000 n=8+8)
pkg:google.golang.org/protobuf/internal/benchmarks/micro goos:linux goarch:amd64
EmptyMessage/Clone-12                96.0B ± 0%     64.0B ± 0%  -33.33%  (p=0.000 n=8+8)
RepeatedInt32/Clone-12              25.4kB ± 0%     3.2kB ± 0%  -87.33%  (p=0.000 n=8+8)
Required/Clone-12                     416B ± 0%      256B ± 0%  -38.46%  (p=0.000 n=8+8)

name                              old allocs/op  new allocs/op  delta
pkg:google.golang.org/protobuf/internal/benchmarks goos:linux goarch:amd64
/Clone/google_message1_proto2-12      52.0 ± 0%      21.0 ± 0%  -59.62%  (p=0.000 n=8+8)
/Clone/google_message1_proto3-12      33.0 ± 0%       3.0 ± 0%  -90.91%  (p=0.000 n=8+8)
/Clone/google_message2-12            22.3k ± 0%      7.5k ± 0%  -66.41%  (p=0.000 n=8+8)
pkg:google.golang.org/protobuf/internal/benchmarks/micro goos:linux goarch:amd64
EmptyMessage/Clone-12                 3.00 ± 0%      2.00 ± 0%  -33.33%  (p=0.000 n=8+8)
RepeatedInt32/Clone-12               1.51k ± 0%     0.00k ± 0%  -99.80%  (p=0.000 n=8+8)
Required/Clone-12                     51.0 ± 0%      18.0 ± 0%  -64.71%  (p=0.000 n=8+8)

Change-Id: Ife9018097c34cb025dc9c4fdd9a61b2f947853c6
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/219147
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
17 files changed
tree: b2b6aa6c6c549f0506e17d390bbdd385d748396e
  1. .gitignore
  2. .travis.yml
  3. AUTHORS
  4. CONTRIBUTING.md
  5. CONTRIBUTORS
  6. LICENSE
  7. PATENTS
  8. README.md
  9. cmd/
  10. compiler/
  11. encoding/
  12. go.mod
  13. go.sum
  14. integration_test.go
  15. internal/
  16. proto/
  17. reflect/
  18. regenerate.bash
  19. release.bash
  20. runtime/
  21. test.bash
  22. testing/
  23. types/
README.md

Next Generation Go Protocol Buffers

WARNING: This repository is in active development. There are no guarantees about API stability. Breaking changes will occur until a stable release is made and announced.

This repository is for the development of the next major Go implementation of protocol buffers. This library makes breaking API changes relative to the existing Go protobuf library. Of particular note, this API aims to make protobuf reflection a first-class feature of the API and implements the protobuf ecosystem in terms of reflection.

Design Documents

List of relevant design documents:

Contributing

We appreciate community contributions. See CONTRIBUTING.md.

Reporting Issues

Issues regarding the new API can be filed at github.com/golang/protobuf. Please use a APIv2: prefix in the title to make it clear that the issue is regarding the new API work.