protobuf

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Author	SHA1	Message	Date
Joshua Haberman	c69dd68fb1	Implement feature inheritance and legacy editions for upb. This switches upb to using legacy editions for all proto2/proto3 logic. This does not yet enable code generation for editions protos (ie. we do not yet turn on `FEATURE_SUPPORTS_EDITIONS`), but with feature inheritance in place, this will be a much smaller follow-on change. There is a ~10% increase in allocations, but only a ~1% increase in peak memory. There are some <5% increases in instructions and cycles, but apparently no increase in time: ``` name old cpu/op new cpu/op delta BM_ArenaOneAlloc 17.8ns ±11% 16.9ns ±17% ~ (p=0.310 n=5+5) BM_ArenaInitialBlockOneAlloc 5.99ns ±13% 5.35ns ± 2% ~ (p=0.421 n=5+5) BM_ArenaFuseUnbalanced/2 71.4ns ±11% 63.1ns ± 3% ~ (p=0.095 n=5+5) BM_ArenaFuseUnbalanced/8 509ns ± 2% 532ns ±15% ~ (p=0.421 n=5+5) BM_ArenaFuseUnbalanced/64 4.73µs ±20% 4.43µs ±10% ~ (p=0.841 n=5+5) BM_ArenaFuseUnbalanced/128 9.77µs ±12% 8.64µs ± 4% ~ (p=0.095 n=5+5) BM_ArenaFuseBalanced/2 67.5ns ±13% 62.6ns ± 3% ~ (p=0.841 n=5+5) BM_ArenaFuseBalanced/8 552ns ±23% 496ns ±25% ~ (p=0.222 n=5+5) BM_ArenaFuseBalanced/64 4.76µs ±14% 4.24µs ± 4% ~ (p=0.421 n=5+5) BM_ArenaFuseBalanced/128 10.2µs ±14% 8.6µs ± 4% -15.61% (p=0.016 n=5+5) BM_LoadAdsDescriptor_Upb<NoLayout> 6.20ms ±12% 6.18ms ±16% ~ (p=0.421 n=5+5) BM_LoadAdsDescriptor_Upb<WithLayout> 6.91ms ±12% 6.63ms ± 3% ~ (p=0.690 n=5+5) BM_LoadAdsDescriptor_Proto2<NoLayout> 15.0ms ±12% 13.7ms ± 3% ~ (p=0.421 n=5+5) BM_LoadAdsDescriptor_Proto2<WithLayout> 15.1ms ±13% 13.8ms ± 3% ~ (p=0.548 n=5+5) BM_Parse_Upb_FileDesc<UseArena, Copy> 14.4µs ±13% 13.2µs ± 3% ~ (p=0.548 n=5+5) BM_Parse_Upb_FileDesc<UseArena, Alias> 12.8µs ±12% 11.8µs ± 3% ~ (p=0.222 n=5+5) BM_Parse_Upb_FileDesc<InitBlock, Copy> 13.7µs ±12% 12.9µs ± 3% ~ (p=1.000 n=5+5) BM_Parse_Upb_FileDesc<InitBlock, Alias> 13.1µs ±11% 11.6µs ± 3% ~ (p=0.056 n=5+5) BM_Parse_Proto2<FileDesc, NoArena, Copy> 24.7µs ±12% 22.6µs ± 8% ~ (p=0.310 n=5+5) BM_Parse_Proto2<FileDesc, UseArena, Copy> 11.6µs ±13% 10.9µs ± 2% ~ (p=1.000 n=5+5) BM_Parse_Proto2<FileDesc, InitBlock, Copy> 11.7µs ±10% 10.6µs ± 3% ~ (p=0.310 n=5+5) BM_Parse_Proto2<FileDescSV, InitBlock, Alias> 13.4µs ±12% 12.3µs ± 4% ~ (p=0.310 n=5+5) BM_SerializeDescriptor_Proto2 6.62µs ±13% 6.00µs ± 6% ~ (p=0.056 n=5+5) BM_SerializeDescriptor_Upb 11.1µs ±13% 10.3µs ± 3% ~ (p=1.000 n=5+5) name old time/op new time/op delta BM_ArenaOneAlloc 17.9ns ±12% 17.0ns ±17% ~ (p=0.310 n=5+5) BM_ArenaInitialBlockOneAlloc 6.03ns ±14% 5.36ns ± 2% ~ (p=0.421 n=5+5) BM_ArenaFuseUnbalanced/2 71.9ns ±12% 63.3ns ± 3% ~ (p=0.095 n=5+5) BM_ArenaFuseUnbalanced/8 511ns ± 2% 533ns ±15% ~ (p=0.421 n=5+5) BM_ArenaFuseUnbalanced/64 4.75µs ±20% 4.44µs ±10% ~ (p=0.841 n=5+5) BM_ArenaFuseUnbalanced/128 9.83µs ±12% 8.66µs ± 4% ~ (p=0.151 n=5+5) BM_ArenaFuseBalanced/2 67.8ns ±13% 62.7ns ± 3% ~ (p=0.841 n=5+5) BM_ArenaFuseBalanced/8 555ns ±24% 497ns ±26% ~ (p=0.222 n=5+5) BM_ArenaFuseBalanced/64 4.79µs ±14% 4.25µs ± 4% ~ (p=0.310 n=5+5) BM_ArenaFuseBalanced/128 10.3µs ±14% 8.6µs ± 4% -15.93% (p=0.016 n=5+5) BM_LoadAdsDescriptor_Upb<NoLayout> 6.25ms ±12% 6.20ms ±16% ~ (p=0.421 n=5+5) BM_LoadAdsDescriptor_Upb<WithLayout> 6.96ms ±13% 6.65ms ± 3% ~ (p=0.690 n=5+5) BM_LoadAdsDescriptor_Proto2<NoLayout> 15.2ms ±12% 13.7ms ± 3% ~ (p=0.421 n=5+5) BM_LoadAdsDescriptor_Proto2<WithLayout> 15.3ms ±14% 13.8ms ± 3% ~ (p=0.548 n=5+5) BM_Parse_Upb_FileDesc<UseArena, Copy> 14.5µs ±14% 13.2µs ± 3% ~ (p=0.690 n=5+5) BM_Parse_Upb_FileDesc<UseArena, Alias> 12.8µs ±12% 11.8µs ± 3% ~ (p=0.222 n=5+5) BM_Parse_Upb_FileDesc<InitBlock, Copy> 13.8µs ±13% 13.0µs ± 3% ~ (p=1.000 n=5+5) BM_Parse_Upb_FileDesc<InitBlock, Alias> 13.2µs ±12% 11.6µs ± 3% ~ (p=0.056 n=5+5) BM_Parse_Proto2<FileDesc, NoArena, Copy> 24.9µs ±12% 22.6µs ± 8% ~ (p=0.310 n=5+5) BM_Parse_Proto2<FileDesc, UseArena, Copy> 11.7µs ±14% 10.9µs ± 2% ~ (p=1.000 n=5+5) BM_Parse_Proto2<FileDesc, InitBlock, Copy> 11.7µs ±11% 10.7µs ± 3% ~ (p=0.222 n=5+5) BM_Parse_Proto2<FileDescSV, InitBlock, Alias> 13.5µs ±12% 12.3µs ± 4% ~ (p=0.310 n=5+5) BM_SerializeDescriptor_Proto2 6.65µs ±13% 6.01µs ± 6% ~ (p=0.056 n=5+5) BM_SerializeDescriptor_Upb 11.2µs ±13% 10.3µs ± 3% ~ (p=1.000 n=5+5) name old INSTRUCTIONS/op new INSTRUCTIONS/op delta BM_ArenaOneAlloc 189 ± 0% 189 ± 0% ~ (p=0.881 n=5+5) BM_ArenaInitialBlockOneAlloc 69.0 ± 0% 69.0 ± 0% ~ (all samples are equal) BM_ArenaFuseUnbalanced/2 458 ± 0% 458 ± 0% ~ (p=1.000 n=5+5) BM_ArenaFuseUnbalanced/8 3.28k ±15% 3.60k ± 0% ~ (p=0.286 n=5+4) BM_ArenaFuseUnbalanced/64 28.6k ± 2% 29.2k ± 0% +2.17% (p=0.032 n=5+4) BM_ArenaFuseUnbalanced/128 57.9k ± 1% 57.9k ± 1% ~ (p=1.000 n=5+5) BM_ArenaFuseBalanced/2 482 ± 0% 482 ± 0% ~ (p=0.421 n=5+5) BM_ArenaFuseBalanced/8 3.35k ±14% 3.35k ±14% ~ (p=0.841 n=5+5) BM_ArenaFuseBalanced/64 29.2k ± 2% 29.3k ± 1% ~ (p=0.421 n=5+5) BM_ArenaFuseBalanced/128 59.2k ± 1% 59.3k ± 1% ~ (p=0.556 n=4+5) BM_LoadAdsDescriptor_Upb<NoLayout> 37.3M ± 0% 38.2M ± 0% +2.39% (p=0.008 n=5+5) BM_LoadAdsDescriptor_Upb<WithLayout> 40.9M ± 0% 41.7M ± 0% +2.02% (p=0.008 n=5+5) BM_LoadAdsDescriptor_Proto2<NoLayout> 87.2M ± 0% 88.3M ± 1% +1.25% (p=0.008 n=5+5) BM_LoadAdsDescriptor_Proto2<WithLayout> 88.0M ± 0% 88.9M ± 1% +1.13% (p=0.016 n=5+5) BM_Parse_Upb_FileDesc<UseArena, Copy> 154k ± 0% 154k ± 0% ~ (p=1.000 n=5+5) BM_Parse_Upb_FileDesc<UseArena, Alias> 143k ± 0% 143k ± 0% ~ (p=0.310 n=5+5) BM_Parse_Upb_FileDesc<InitBlock, Copy> 153k ± 0% 153k ± 0% ~ (p=1.016 n=5+4) BM_Parse_Upb_FileDesc<InitBlock, Alias> 142k ± 0% 142k ± 0% ~ (p=0.127 n=5+5) BM_Parse_Proto2<FileDesc, NoArena, Copy> 213k ± 1% 217k ± 5% ~ (p=1.000 n=5+5) BM_Parse_Proto2<FileDesc, UseArena, Copy> 122k ± 0% 123k ± 0% +0.86% (p=0.008 n=5+5) BM_Parse_Proto2<FileDesc, InitBlock, Copy> 120k ± 0% 120k ± 0% ~ (p=0.421 n=5+5) BM_Parse_Proto2<FileDescSV, InitBlock, Alias> 124k ± 0% 124k ± 0% ~ (p=0.587 n=5+5) BM_SerializeDescriptor_Proto2 63.5k ± 0% 63.5k ± 0% ~ (p=0.278 n=5+5) BM_SerializeDescriptor_Upb 111k ± 0% 111k ± 0% ~ (p=1.000 n=5+5) name old CYCLES/op new CYCLES/op delta BM_ArenaOneAlloc 53.5 ± 0% 53.4 ± 0% ~ (p=0.095 n=5+5) BM_ArenaInitialBlockOneAlloc 17.5 ± 1% 17.4 ± 0% ~ (p=0.087 n=5+5) BM_ArenaFuseUnbalanced/2 206 ± 0% 206 ± 0% ~ (p=0.548 n=5+5) BM_ArenaFuseUnbalanced/8 1.55k ±12% 1.67k ± 1% ~ (p=0.548 n=5+5) BM_ArenaFuseUnbalanced/64 14.1k ± 8% 14.1k ± 1% ~ (p=0.222 n=5+5) BM_ArenaFuseUnbalanced/128 28.2k ± 1% 28.3k ± 1% ~ (p=0.548 n=5+5) BM_ArenaFuseBalanced/2 205 ± 0% 204 ± 0% ~ (p=0.548 n=5+5) BM_ArenaFuseBalanced/8 1.57k ±12% 1.56k ±12% ~ (p=0.421 n=5+5) BM_ArenaFuseBalanced/64 13.9k ± 2% 13.9k ± 1% ~ (p=1.000 n=5+5) BM_ArenaFuseBalanced/128 28.1k ± 1% 28.2k ± 1% ~ (p=0.730 n=4+5) BM_LoadAdsDescriptor_Upb<NoLayout> 18.7M ± 0% 19.3M ± 1% +3.38% (p=0.008 n=5+5) BM_LoadAdsDescriptor_Upb<WithLayout> 20.9M ± 0% 21.6M ± 0% +3.09% (p=0.008 n=5+5) BM_LoadAdsDescriptor_Proto2<NoLayout> 43.4M ± 0% 44.4M ± 1% +2.33% (p=0.008 n=5+5) BM_LoadAdsDescriptor_Proto2<WithLayout> 44.0M ± 0% 44.9M ± 2% +1.92% (p=0.016 n=5+5) BM_Parse_Upb_FileDesc<UseArena, Copy> 42.0k ± 1% 43.0k ± 1% +2.32% (p=0.008 n=5+5) BM_Parse_Upb_FileDesc<UseArena, Alias> 38.2k ± 1% 38.4k ± 0% +0.74% (p=0.032 n=5+5) BM_Parse_Upb_FileDesc<InitBlock, Copy> 41.6k ± 0% 42.6k ± 1% +2.51% (p=0.008 n=5+5) BM_Parse_Upb_FileDesc<InitBlock, Alias> 37.6k ± 0% 38.1k ± 0% +1.34% (p=0.008 n=5+5) BM_Parse_Proto2<FileDesc, NoArena, Copy> 71.9k ± 1% 74.1k ± 6% ~ (p=1.000 n=5+5) BM_Parse_Proto2<FileDesc, UseArena, Copy> 35.4k ± 1% 35.8k ± 0% +1.10% (p=0.008 n=5+5) BM_Parse_Proto2<FileDesc, InitBlock, Copy> 34.6k ± 1% 34.9k ± 1% ~ (p=0.095 n=5+5) BM_Parse_Proto2<FileDescSV, InitBlock, Alias> 40.5k ± 0% 40.0k ± 1% -1.36% (p=0.008 n=5+5) BM_SerializeDescriptor_Proto2 20.1k ± 1% 19.7k ± 4% ~ (p=0.421 n=5+5) BM_SerializeDescriptor_Upb 33.7k ± 0% 33.7k ± 0% ~ (p=0.222 n=5+5) name old allocs/op new allocs/op delta BM_ArenaOneAlloc 1.00 ± 0% 1.00 ± 0% ~ (all samples are equal) BM_ArenaFuseUnbalanced/2 2.00 ± 0% 2.00 ± 0% ~ (all samples are equal) BM_ArenaFuseUnbalanced/8 8.00 ± 0% 8.00 ± 0% ~ (all samples are equal) BM_ArenaFuseUnbalanced/64 64.0 ± 0% 64.0 ± 0% ~ (all samples are equal) BM_ArenaFuseUnbalanced/128 128 ± 0% 128 ± 0% ~ (all samples are equal) BM_ArenaFuseBalanced/2 2.00 ± 0% 2.00 ± 0% ~ (all samples are equal) BM_ArenaFuseBalanced/8 8.00 ± 0% 8.00 ± 0% ~ (all samples are equal) BM_ArenaFuseBalanced/64 64.0 ± 0% 64.0 ± 0% ~ (all samples are equal) BM_ArenaFuseBalanced/128 128 ± 0% 128 ± 0% ~ (all samples are equal) BM_LoadAdsDescriptor_Upb<NoLayout> 6.21k ± 0% 6.93k ± 0% +11.54% (p=0.008 n=5+5) BM_LoadAdsDescriptor_Upb<WithLayout> 6.54k ± 0% 6.96k ± 0% +6.34% (p=0.008 n=5+5) BM_LoadAdsDescriptor_Proto2<NoLayout> 124k ± 0% 124k ± 0% +0.00% (p=0.008 n=5+5) BM_LoadAdsDescriptor_Proto2<WithLayout> 126k ± 0% 126k ± 0% +0.00% (p=0.008 n=5+5) BM_Parse_Upb_FileDesc<UseArena, Copy> 7.00 ± 0% 7.00 ± 0% ~ (all samples are equal) BM_Parse_Upb_FileDesc<UseArena, Alias> 7.00 ± 0% 7.00 ± 0% ~ (all samples are equal) BM_Parse_Proto2<FileDesc, NoArena, Copy> 709 ± 0% 709 ± 0% ~ (all samples are equal) BM_Parse_Proto2<FileDesc, UseArena, Copy> 8.00 ± 0% 8.00 ± 0% ~ (all samples are equal) name old peak-mem(Bytes)/op new peak-mem(Bytes)/op delta BM_ArenaOneAlloc 328 ± 0% 328 ± 0% ~ (all samples are equal) BM_ArenaFuseUnbalanced/2 656 ± 0% 656 ± 0% ~ (all samples are equal) BM_ArenaFuseUnbalanced/8 2.62k ± 0% 2.62k ± 0% ~ (all samples are equal) BM_ArenaFuseUnbalanced/64 21.0k ± 0% 21.0k ± 0% ~ (all samples are equal) BM_ArenaFuseUnbalanced/128 42.0k ± 0% 42.0k ± 0% ~ (all samples are equal) BM_ArenaFuseBalanced/2 656 ± 0% 656 ± 0% ~ (all samples are equal) BM_ArenaFuseBalanced/8 2.62k ± 0% 2.62k ± 0% ~ (all samples are equal) BM_ArenaFuseBalanced/64 21.0k ± 0% 21.0k ± 0% ~ (all samples are equal) BM_ArenaFuseBalanced/128 42.0k ± 0% 42.0k ± 0% ~ (all samples are equal) BM_LoadAdsDescriptor_Upb<NoLayout> 10.2M ± 0% 10.4M ± 0% +1.15% (p=0.008 n=5+5) BM_LoadAdsDescriptor_Upb<WithLayout> 10.5M ± 0% 10.5M ± 0% +0.11% (p=0.008 n=5+5) BM_LoadAdsDescriptor_Proto2<NoLayout> 7.14M ± 0% 7.14M ± 0% ~ (p=0.317 n=4+5) BM_LoadAdsDescriptor_Proto2<WithLayout> 7.18M ± 0% 7.18M ± 0% ~ (p=0.159 n=5+4) BM_Parse_Upb_FileDesc<UseArena, Copy> 36.5k ± 0% 36.5k ± 0% ~ (all samples are equal) BM_Parse_Upb_FileDesc<UseArena, Alias> 36.5k ± 0% 36.5k ± 0% ~ (all samples are equal) BM_Parse_Proto2<FileDesc, NoArena, Copy> 35.4k ± 0% 35.4k ± 0% ~ (all samples are equal) BM_Parse_Proto2<FileDesc, UseArena, Copy> 65.3k ± 0% 65.3k ± 0% ~ (all samples are equal) name old items/s new items/s delta BM_ArenaFuseUnbalanced/2 28.2M ±12% 31.7M ± 3% ~ (p=0.095 n=5+5) BM_ArenaFuseUnbalanced/8 15.7M ± 2% 15.1M ±14% ~ (p=0.421 n=5+5) BM_ArenaFuseUnbalanced/64 13.7M ±18% 14.5M ± 9% ~ (p=0.841 n=5+5) BM_ArenaFuseUnbalanced/128 13.2M ±12% 14.8M ± 5% ~ (p=0.095 n=5+5) BM_ArenaFuseBalanced/2 29.9M ±12% 32.0M ± 3% ~ (p=0.841 n=5+5) BM_ArenaFuseBalanced/8 14.8M ±28% 16.5M ±22% ~ (p=0.222 n=5+5) BM_ArenaFuseBalanced/64 13.6M ±15% 15.1M ± 4% ~ (p=0.421 n=5+5) BM_ArenaFuseBalanced/128 12.6M ±15% 14.9M ± 4% +17.88% (p=0.016 n=5+5) name old speed new speed delta BM_LoadAdsDescriptor_Upb<NoLayout> 128MB/s ±11% 128MB/s ±14% ~ (p=0.421 n=5+5) BM_LoadAdsDescriptor_Upb<WithLayout> 115MB/s ±12% 119MB/s ± 3% ~ (p=0.690 n=5+5) BM_LoadAdsDescriptor_Proto2<NoLayout> 52.9MB/s ±12% 57.6MB/s ± 3% ~ (p=0.421 n=5+5) BM_LoadAdsDescriptor_Proto2<WithLayout> 52.6MB/s ±14% 57.2MB/s ± 2% ~ (p=0.548 n=5+5) BM_Parse_Upb_FileDesc<UseArena, Copy> 527MB/s ±14% 571MB/s ± 3% ~ (p=0.548 n=5+5) BM_Parse_Upb_FileDesc<UseArena, Alias> 595MB/s ±11% 640MB/s ± 3% ~ (p=0.222 n=5+5) BM_Parse_Upb_FileDesc<InitBlock, Copy> 553MB/s ±12% 582MB/s ± 3% ~ (p=1.000 n=5+5) BM_Parse_Upb_FileDesc<InitBlock, Alias> 576MB/s ±12% 649MB/s ± 3% ~ (p=0.056 n=5+5) BM_Parse_Proto2<FileDesc, NoArena, Copy> 307MB/s ±13% 334MB/s ± 8% ~ (p=0.310 n=5+5) BM_Parse_Proto2<FileDesc, UseArena, Copy> 653MB/s ±13% 689MB/s ± 2% ~ (p=1.000 n=5+5) BM_Parse_Proto2<FileDesc, InitBlock, Copy> 650MB/s ±10% 708MB/s ± 3% ~ (p=0.310 n=5+5) BM_Parse_Proto2<FileDescSV, InitBlock, Alias> 564MB/s ±12% 614MB/s ± 4% ~ (p=0.310 n=5+5) BM_SerializeDescriptor_Proto2 1.15GB/s ±12% 1.25GB/s ± 5% ~ (p=0.056 n=5+5) BM_SerializeDescriptor_Upb 684MB/s ±12% 730MB/s ± 3% ~ (p=1.000 n=5+5) ``` This adds about 5Ki of code size. Some of this likely comes from the fact that we now link in `message/copy.c` to perform a deep copy of a FeatureSet proto. ``` $ /google/bin/releases/protobuf-team/bloaty/bloaty-google3-diff --blaze-build-opts="-c opt" third_party/upb/upb/conformance/conformance_upb FILE SIZE VM SIZE -------------- -------------- +0.5% +4.19Ki +0.5% +4.19Ki .text +0.4% +656 +0.4% +656 .rodata +0.1% +504 [ = ] 0 .strtab +0.2% +384 [ = ] 0 .symtab +0.2% +280 +0.2% +280 .eh_frame +0.2% +216 +0.2% +216 .rela.dyn +0.3% +96 +0.3% +96 .data.rel.ro +0.2% +64 +0.2% +64 .eh_frame_hdr +1.1% +16 [ = ] 0 .got.plt +0.2% +8 +0.2% +8 .rela.plt -4.6% -8 -4.6% -8 [LOAD #2 [RX]] -50.0% -48 [ = ] 0 [Unmapped] [ = ] 0 -81.7% -1.47Ki .relro_padding +0.1% +6.30Ki +0.0% +4.00Ki TOTAL ``` PiperOrigin-RevId: 579321454	1 year ago

Author

SHA1

Message

Date

Joshua Haberman

c69dd68fb1

Implement feature inheritance and legacy editions for upb.

This switches upb to using legacy editions for all proto2/proto3 logic.  This does not yet enable code generation for editions protos (ie. we do not yet turn on `FEATURE_SUPPORTS_EDITIONS`), but with feature inheritance in place, this will be a much smaller follow-on change.

There is a ~10% increase in allocations, but only a ~1% increase in peak memory.  There are some <5% increases in instructions and cycles, but apparently no increase in time:

```
name                                           old cpu/op   new cpu/op   delta
BM_ArenaOneAlloc                                 17.8ns ±11%  16.9ns ±17%     ~     (p=0.310 n=5+5)
BM_ArenaInitialBlockOneAlloc                     5.99ns ±13%  5.35ns ± 2%     ~     (p=0.421 n=5+5)
BM_ArenaFuseUnbalanced/2                         71.4ns ±11%  63.1ns ± 3%     ~     (p=0.095 n=5+5)
BM_ArenaFuseUnbalanced/8                          509ns ± 2%   532ns ±15%     ~     (p=0.421 n=5+5)
BM_ArenaFuseUnbalanced/64                        4.73µs ±20%  4.43µs ±10%     ~     (p=0.841 n=5+5)
BM_ArenaFuseUnbalanced/128                       9.77µs ±12%  8.64µs ± 4%     ~     (p=0.095 n=5+5)
BM_ArenaFuseBalanced/2                           67.5ns ±13%  62.6ns ± 3%     ~     (p=0.841 n=5+5)
BM_ArenaFuseBalanced/8                            552ns ±23%   496ns ±25%     ~     (p=0.222 n=5+5)
BM_ArenaFuseBalanced/64                          4.76µs ±14%  4.24µs ± 4%     ~     (p=0.421 n=5+5)
BM_ArenaFuseBalanced/128                         10.2µs ±14%   8.6µs ± 4%  -15.61%  (p=0.016 n=5+5)
BM_LoadAdsDescriptor_Upb<NoLayout>               6.20ms ±12%  6.18ms ±16%     ~     (p=0.421 n=5+5)
BM_LoadAdsDescriptor_Upb<WithLayout>             6.91ms ±12%  6.63ms ± 3%     ~     (p=0.690 n=5+5)
BM_LoadAdsDescriptor_Proto2<NoLayout>            15.0ms ±12%  13.7ms ± 3%     ~     (p=0.421 n=5+5)
BM_LoadAdsDescriptor_Proto2<WithLayout>          15.1ms ±13%  13.8ms ± 3%     ~     (p=0.548 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Copy>            14.4µs ±13%  13.2µs ± 3%     ~     (p=0.548 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Alias>           12.8µs ±12%  11.8µs ± 3%     ~     (p=0.222 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Copy>           13.7µs ±12%  12.9µs ± 3%     ~     (p=1.000 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Alias>          13.1µs ±11%  11.6µs ± 3%     ~     (p=0.056 n=5+5)
BM_Parse_Proto2<FileDesc, NoArena, Copy>         24.7µs ±12%  22.6µs ± 8%     ~     (p=0.310 n=5+5)
BM_Parse_Proto2<FileDesc, UseArena, Copy>        11.6µs ±13%  10.9µs ± 2%     ~     (p=1.000 n=5+5)
BM_Parse_Proto2<FileDesc, InitBlock, Copy>       11.7µs ±10%  10.6µs ± 3%     ~     (p=0.310 n=5+5)
BM_Parse_Proto2<FileDescSV, InitBlock, Alias>    13.4µs ±12%  12.3µs ± 4%     ~     (p=0.310 n=5+5)
BM_SerializeDescriptor_Proto2                    6.62µs ±13%  6.00µs ± 6%     ~     (p=0.056 n=5+5)
BM_SerializeDescriptor_Upb                       11.1µs ±13%  10.3µs ± 3%     ~     (p=1.000 n=5+5)

name                                           old time/op             new time/op             delta
BM_ArenaOneAlloc                                 17.9ns ±12%             17.0ns ±17%     ~             (p=0.310 n=5+5)
BM_ArenaInitialBlockOneAlloc                     6.03ns ±14%             5.36ns ± 2%     ~             (p=0.421 n=5+5)
BM_ArenaFuseUnbalanced/2                         71.9ns ±12%             63.3ns ± 3%     ~             (p=0.095 n=5+5)
BM_ArenaFuseUnbalanced/8                          511ns ± 2%              533ns ±15%     ~             (p=0.421 n=5+5)
BM_ArenaFuseUnbalanced/64                        4.75µs ±20%             4.44µs ±10%     ~             (p=0.841 n=5+5)
BM_ArenaFuseUnbalanced/128                       9.83µs ±12%             8.66µs ± 4%     ~             (p=0.151 n=5+5)
BM_ArenaFuseBalanced/2                           67.8ns ±13%             62.7ns ± 3%     ~             (p=0.841 n=5+5)
BM_ArenaFuseBalanced/8                            555ns ±24%              497ns ±26%     ~             (p=0.222 n=5+5)
BM_ArenaFuseBalanced/64                          4.79µs ±14%             4.25µs ± 4%     ~             (p=0.310 n=5+5)
BM_ArenaFuseBalanced/128                         10.3µs ±14%              8.6µs ± 4%  -15.93%          (p=0.016 n=5+5)
BM_LoadAdsDescriptor_Upb<NoLayout>               6.25ms ±12%             6.20ms ±16%     ~             (p=0.421 n=5+5)
BM_LoadAdsDescriptor_Upb<WithLayout>             6.96ms ±13%             6.65ms ± 3%     ~             (p=0.690 n=5+5)
BM_LoadAdsDescriptor_Proto2<NoLayout>            15.2ms ±12%             13.7ms ± 3%     ~             (p=0.421 n=5+5)
BM_LoadAdsDescriptor_Proto2<WithLayout>          15.3ms ±14%             13.8ms ± 3%     ~             (p=0.548 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Copy>            14.5µs ±14%             13.2µs ± 3%     ~             (p=0.690 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Alias>           12.8µs ±12%             11.8µs ± 3%     ~             (p=0.222 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Copy>           13.8µs ±13%             13.0µs ± 3%     ~             (p=1.000 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Alias>          13.2µs ±12%             11.6µs ± 3%     ~             (p=0.056 n=5+5)
BM_Parse_Proto2<FileDesc, NoArena, Copy>         24.9µs ±12%             22.6µs ± 8%     ~             (p=0.310 n=5+5)
BM_Parse_Proto2<FileDesc, UseArena, Copy>        11.7µs ±14%             10.9µs ± 2%     ~             (p=1.000 n=5+5)
BM_Parse_Proto2<FileDesc, InitBlock, Copy>       11.7µs ±11%             10.7µs ± 3%     ~             (p=0.222 n=5+5)
BM_Parse_Proto2<FileDescSV, InitBlock, Alias>    13.5µs ±12%             12.3µs ± 4%     ~             (p=0.310 n=5+5)
BM_SerializeDescriptor_Proto2                    6.65µs ±13%             6.01µs ± 6%     ~             (p=0.056 n=5+5)
BM_SerializeDescriptor_Upb                       11.2µs ±13%             10.3µs ± 3%     ~             (p=1.000 n=5+5)

name                                           old INSTRUCTIONS/op     new INSTRUCTIONS/op     delta
BM_ArenaOneAlloc                                    189 ± 0%                189 ± 0%     ~             (p=0.881 n=5+5)
BM_ArenaInitialBlockOneAlloc                       69.0 ± 0%               69.0 ± 0%     ~     (all samples are equal)
BM_ArenaFuseUnbalanced/2                            458 ± 0%                458 ± 0%     ~             (p=1.000 n=5+5)
BM_ArenaFuseUnbalanced/8                          3.28k ±15%              3.60k ± 0%     ~             (p=0.286 n=5+4)
BM_ArenaFuseUnbalanced/64                         28.6k ± 2%              29.2k ± 0%   +2.17%          (p=0.032 n=5+4)
BM_ArenaFuseUnbalanced/128                        57.9k ± 1%              57.9k ± 1%     ~             (p=1.000 n=5+5)
BM_ArenaFuseBalanced/2                              482 ± 0%                482 ± 0%     ~             (p=0.421 n=5+5)
BM_ArenaFuseBalanced/8                            3.35k ±14%              3.35k ±14%     ~             (p=0.841 n=5+5)
BM_ArenaFuseBalanced/64                           29.2k ± 2%              29.3k ± 1%     ~             (p=0.421 n=5+5)
BM_ArenaFuseBalanced/128                          59.2k ± 1%              59.3k ± 1%     ~             (p=0.556 n=4+5)
BM_LoadAdsDescriptor_Upb<NoLayout>                37.3M ± 0%              38.2M ± 0%   +2.39%          (p=0.008 n=5+5)
BM_LoadAdsDescriptor_Upb<WithLayout>              40.9M ± 0%              41.7M ± 0%   +2.02%          (p=0.008 n=5+5)
BM_LoadAdsDescriptor_Proto2<NoLayout>             87.2M ± 0%              88.3M ± 1%   +1.25%          (p=0.008 n=5+5)
BM_LoadAdsDescriptor_Proto2<WithLayout>           88.0M ± 0%              88.9M ± 1%   +1.13%          (p=0.016 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Copy>              154k ± 0%               154k ± 0%     ~             (p=1.000 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Alias>             143k ± 0%               143k ± 0%     ~             (p=0.310 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Copy>             153k ± 0%               153k ± 0%     ~             (p=1.016 n=5+4)
BM_Parse_Upb_FileDesc<InitBlock, Alias>            142k ± 0%               142k ± 0%     ~             (p=0.127 n=5+5)
BM_Parse_Proto2<FileDesc, NoArena, Copy>           213k ± 1%               217k ± 5%     ~             (p=1.000 n=5+5)
BM_Parse_Proto2<FileDesc, UseArena, Copy>          122k ± 0%               123k ± 0%   +0.86%          (p=0.008 n=5+5)
BM_Parse_Proto2<FileDesc, InitBlock, Copy>         120k ± 0%               120k ± 0%     ~             (p=0.421 n=5+5)
BM_Parse_Proto2<FileDescSV, InitBlock, Alias>      124k ± 0%               124k ± 0%     ~             (p=0.587 n=5+5)
BM_SerializeDescriptor_Proto2                     63.5k ± 0%              63.5k ± 0%     ~             (p=0.278 n=5+5)
BM_SerializeDescriptor_Upb                         111k ± 0%               111k ± 0%     ~             (p=1.000 n=5+5)

name                                           old CYCLES/op           new CYCLES/op           delta
BM_ArenaOneAlloc                                   53.5 ± 0%               53.4 ± 0%     ~             (p=0.095 n=5+5)
BM_ArenaInitialBlockOneAlloc                       17.5 ± 1%               17.4 ± 0%     ~             (p=0.087 n=5+5)
BM_ArenaFuseUnbalanced/2                            206 ± 0%                206 ± 0%     ~             (p=0.548 n=5+5)
BM_ArenaFuseUnbalanced/8                          1.55k ±12%              1.67k ± 1%     ~             (p=0.548 n=5+5)
BM_ArenaFuseUnbalanced/64                         14.1k ± 8%              14.1k ± 1%     ~             (p=0.222 n=5+5)
BM_ArenaFuseUnbalanced/128                        28.2k ± 1%              28.3k ± 1%     ~             (p=0.548 n=5+5)
BM_ArenaFuseBalanced/2                              205 ± 0%                204 ± 0%     ~             (p=0.548 n=5+5)
BM_ArenaFuseBalanced/8                            1.57k ±12%              1.56k ±12%     ~             (p=0.421 n=5+5)
BM_ArenaFuseBalanced/64                           13.9k ± 2%              13.9k ± 1%     ~             (p=1.000 n=5+5)
BM_ArenaFuseBalanced/128                          28.1k ± 1%              28.2k ± 1%     ~             (p=0.730 n=4+5)
BM_LoadAdsDescriptor_Upb<NoLayout>                18.7M ± 0%              19.3M ± 1%   +3.38%          (p=0.008 n=5+5)
BM_LoadAdsDescriptor_Upb<WithLayout>              20.9M ± 0%              21.6M ± 0%   +3.09%          (p=0.008 n=5+5)
BM_LoadAdsDescriptor_Proto2<NoLayout>             43.4M ± 0%              44.4M ± 1%   +2.33%          (p=0.008 n=5+5)
BM_LoadAdsDescriptor_Proto2<WithLayout>           44.0M ± 0%              44.9M ± 2%   +1.92%          (p=0.016 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Copy>             42.0k ± 1%              43.0k ± 1%   +2.32%          (p=0.008 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Alias>            38.2k ± 1%              38.4k ± 0%   +0.74%          (p=0.032 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Copy>            41.6k ± 0%              42.6k ± 1%   +2.51%          (p=0.008 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Alias>           37.6k ± 0%              38.1k ± 0%   +1.34%          (p=0.008 n=5+5)
BM_Parse_Proto2<FileDesc, NoArena, Copy>          71.9k ± 1%              74.1k ± 6%     ~             (p=1.000 n=5+5)
BM_Parse_Proto2<FileDesc, UseArena, Copy>         35.4k ± 1%              35.8k ± 0%   +1.10%          (p=0.008 n=5+5)
BM_Parse_Proto2<FileDesc, InitBlock, Copy>        34.6k ± 1%              34.9k ± 1%     ~             (p=0.095 n=5+5)
BM_Parse_Proto2<FileDescSV, InitBlock, Alias>     40.5k ± 0%              40.0k ± 1%   -1.36%          (p=0.008 n=5+5)
BM_SerializeDescriptor_Proto2                     20.1k ± 1%              19.7k ± 4%     ~             (p=0.421 n=5+5)
BM_SerializeDescriptor_Upb                        33.7k ± 0%              33.7k ± 0%     ~             (p=0.222 n=5+5)

name                                           old allocs/op           new allocs/op           delta
BM_ArenaOneAlloc                                   1.00 ± 0%               1.00 ± 0%     ~     (all samples are equal)
BM_ArenaFuseUnbalanced/2                           2.00 ± 0%               2.00 ± 0%     ~     (all samples are equal)
BM_ArenaFuseUnbalanced/8                           8.00 ± 0%               8.00 ± 0%     ~     (all samples are equal)
BM_ArenaFuseUnbalanced/64                          64.0 ± 0%               64.0 ± 0%     ~     (all samples are equal)
BM_ArenaFuseUnbalanced/128                          128 ± 0%                128 ± 0%     ~     (all samples are equal)
BM_ArenaFuseBalanced/2                             2.00 ± 0%               2.00 ± 0%     ~     (all samples are equal)
BM_ArenaFuseBalanced/8                             8.00 ± 0%               8.00 ± 0%     ~     (all samples are equal)
BM_ArenaFuseBalanced/64                            64.0 ± 0%               64.0 ± 0%     ~     (all samples are equal)
BM_ArenaFuseBalanced/128                            128 ± 0%                128 ± 0%     ~     (all samples are equal)
BM_LoadAdsDescriptor_Upb<NoLayout>                6.21k ± 0%              6.93k ± 0%  +11.54%          (p=0.008 n=5+5)
BM_LoadAdsDescriptor_Upb<WithLayout>              6.54k ± 0%              6.96k ± 0%   +6.34%          (p=0.008 n=5+5)
BM_LoadAdsDescriptor_Proto2<NoLayout>              124k ± 0%               124k ± 0%   +0.00%          (p=0.008 n=5+5)
BM_LoadAdsDescriptor_Proto2<WithLayout>            126k ± 0%               126k ± 0%   +0.00%          (p=0.008 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Copy>              7.00 ± 0%               7.00 ± 0%     ~     (all samples are equal)
BM_Parse_Upb_FileDesc<UseArena, Alias>             7.00 ± 0%               7.00 ± 0%     ~     (all samples are equal)
BM_Parse_Proto2<FileDesc, NoArena, Copy>            709 ± 0%                709 ± 0%     ~     (all samples are equal)
BM_Parse_Proto2<FileDesc, UseArena, Copy>          8.00 ± 0%               8.00 ± 0%     ~     (all samples are equal)

name                                           old peak-mem(Bytes)/op  new peak-mem(Bytes)/op  delta
BM_ArenaOneAlloc                                    328 ± 0%                328 ± 0%     ~     (all samples are equal)
BM_ArenaFuseUnbalanced/2                            656 ± 0%                656 ± 0%     ~     (all samples are equal)
BM_ArenaFuseUnbalanced/8                          2.62k ± 0%              2.62k ± 0%     ~     (all samples are equal)
BM_ArenaFuseUnbalanced/64                         21.0k ± 0%              21.0k ± 0%     ~     (all samples are equal)
BM_ArenaFuseUnbalanced/128                        42.0k ± 0%              42.0k ± 0%     ~     (all samples are equal)
BM_ArenaFuseBalanced/2                              656 ± 0%                656 ± 0%     ~     (all samples are equal)
BM_ArenaFuseBalanced/8                            2.62k ± 0%              2.62k ± 0%     ~     (all samples are equal)
BM_ArenaFuseBalanced/64                           21.0k ± 0%              21.0k ± 0%     ~     (all samples are equal)
BM_ArenaFuseBalanced/128                          42.0k ± 0%              42.0k ± 0%     ~     (all samples are equal)
BM_LoadAdsDescriptor_Upb<NoLayout>                10.2M ± 0%              10.4M ± 0%   +1.15%          (p=0.008 n=5+5)
BM_LoadAdsDescriptor_Upb<WithLayout>              10.5M ± 0%              10.5M ± 0%   +0.11%          (p=0.008 n=5+5)
BM_LoadAdsDescriptor_Proto2<NoLayout>             7.14M ± 0%              7.14M ± 0%     ~             (p=0.317 n=4+5)
BM_LoadAdsDescriptor_Proto2<WithLayout>           7.18M ± 0%              7.18M ± 0%     ~             (p=0.159 n=5+4)
BM_Parse_Upb_FileDesc<UseArena, Copy>             36.5k ± 0%              36.5k ± 0%     ~     (all samples are equal)
BM_Parse_Upb_FileDesc<UseArena, Alias>            36.5k ± 0%              36.5k ± 0%     ~     (all samples are equal)
BM_Parse_Proto2<FileDesc, NoArena, Copy>          35.4k ± 0%              35.4k ± 0%     ~     (all samples are equal)
BM_Parse_Proto2<FileDesc, UseArena, Copy>         65.3k ± 0%              65.3k ± 0%     ~     (all samples are equal)

name                                           old items/s             new items/s             delta
BM_ArenaFuseUnbalanced/2                          28.2M ±12%              31.7M ± 3%     ~             (p=0.095 n=5+5)
BM_ArenaFuseUnbalanced/8                          15.7M ± 2%              15.1M ±14%     ~             (p=0.421 n=5+5)
BM_ArenaFuseUnbalanced/64                         13.7M ±18%              14.5M ± 9%     ~             (p=0.841 n=5+5)
BM_ArenaFuseUnbalanced/128                        13.2M ±12%              14.8M ± 5%     ~             (p=0.095 n=5+5)
BM_ArenaFuseBalanced/2                            29.9M ±12%              32.0M ± 3%     ~             (p=0.841 n=5+5)
BM_ArenaFuseBalanced/8                            14.8M ±28%              16.5M ±22%     ~             (p=0.222 n=5+5)
BM_ArenaFuseBalanced/64                           13.6M ±15%              15.1M ± 4%     ~             (p=0.421 n=5+5)
BM_ArenaFuseBalanced/128                          12.6M ±15%              14.9M ± 4%  +17.88%          (p=0.016 n=5+5)

name                                           old speed               new speed               delta
BM_LoadAdsDescriptor_Upb<NoLayout>              128MB/s ±11%            128MB/s ±14%     ~             (p=0.421 n=5+5)
BM_LoadAdsDescriptor_Upb<WithLayout>            115MB/s ±12%            119MB/s ± 3%     ~             (p=0.690 n=5+5)
BM_LoadAdsDescriptor_Proto2<NoLayout>          52.9MB/s ±12%           57.6MB/s ± 3%     ~             (p=0.421 n=5+5)
BM_LoadAdsDescriptor_Proto2<WithLayout>        52.6MB/s ±14%           57.2MB/s ± 2%     ~             (p=0.548 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Copy>           527MB/s ±14%            571MB/s ± 3%     ~             (p=0.548 n=5+5)
BM_Parse_Upb_FileDesc<UseArena, Alias>          595MB/s ±11%            640MB/s ± 3%     ~             (p=0.222 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Copy>          553MB/s ±12%            582MB/s ± 3%     ~             (p=1.000 n=5+5)
BM_Parse_Upb_FileDesc<InitBlock, Alias>         576MB/s ±12%            649MB/s ± 3%     ~             (p=0.056 n=5+5)
BM_Parse_Proto2<FileDesc, NoArena, Copy>        307MB/s ±13%            334MB/s ± 8%     ~             (p=0.310 n=5+5)
BM_Parse_Proto2<FileDesc, UseArena, Copy>       653MB/s ±13%            689MB/s ± 2%     ~             (p=1.000 n=5+5)
BM_Parse_Proto2<FileDesc, InitBlock, Copy>      650MB/s ±10%            708MB/s ± 3%     ~             (p=0.310 n=5+5)
BM_Parse_Proto2<FileDescSV, InitBlock, Alias>   564MB/s ±12%            614MB/s ± 4%     ~             (p=0.310 n=5+5)
BM_SerializeDescriptor_Proto2                  1.15GB/s ±12%           1.25GB/s ± 5%     ~             (p=0.056 n=5+5)
BM_SerializeDescriptor_Upb                      684MB/s ±12%            730MB/s ± 3%     ~             (p=1.000 n=5+5)
```

This adds about 5Ki of code size.  Some of this likely comes from the fact that we now link in `message/copy.c` to perform a deep copy of a FeatureSet proto.

```
$ /google/bin/releases/protobuf-team/bloaty/bloaty-google3-diff --blaze-build-opts="-c opt" third_party/upb/upb/conformance/conformance_upb
    FILE SIZE        VM SIZE
 --------------  --------------
  +0.5% +4.19Ki  +0.5% +4.19Ki    .text
  +0.4%    +656  +0.4%    +656    .rodata
  +0.1%    +504  [ = ]       0    .strtab
  +0.2%    +384  [ = ]       0    .symtab
  +0.2%    +280  +0.2%    +280    .eh_frame
  +0.2%    +216  +0.2%    +216    .rela.dyn
  +0.3%     +96  +0.3%     +96    .data.rel.ro
  +0.2%     +64  +0.2%     +64    .eh_frame_hdr
  +1.1%     +16  [ = ]       0    .got.plt
  +0.2%      +8  +0.2%      +8    .rela.plt
  -4.6%      -8  -4.6%      -8    [LOAD #2 [RX]]
 -50.0%     -48  [ = ]       0    [Unmapped]
  [ = ]       0 -81.7% -1.47Ki    .relro_padding
  +0.1% +6.30Ki  +0.0% +4.00Ki    TOTAL
```

PiperOrigin-RevId: 579321454

1 year ago

1 Commits (003e1ac17cfba134e52b88181033295ff312b00c)