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[WASM] Add ILStrip task to wasm app build process #88926

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merged 21 commits into from
Aug 10, 2023
Merged

[WASM] Add ILStrip task to wasm app build process #88926

merged 21 commits into from
Aug 10, 2023

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fanyang-mono
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@fanyang-mono fanyang-mono commented Jul 14, 2023 •
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Fixes #88696

With this PR, the customer is able to create an WASM app and enabling IL trimming for AOT compiled methods. By default, this is disabled. To enable it, build the app with WasmStripILAfterAOT =true. This change help producing a smaller WASM app.

Impact of this change is displayed as follows. I measured the size of _framework after compression using brotli for wasm apps with AOT enabled:

  • Wasm app under src/mono/sample/wasm/browser
    • 6.0M -> 5.8M (-p:WasmEnableWebcil=false) (3.3% smaller)
    • 5.9M -> 5.8M (-p:WasmEnableWebcil=true) (1.7% smaller)
  • Wasm app under src/mono/sample/wasm/browser-bench
    • 7.1M -> 6.8M (-p:WasmEnableWebcil=false) (4.2% smaller)
    • 7.1M -> 6.8M (-p:WasmEnableWebcil=true) (4.2% smaller)

@ghost ghost assigned fanyang-mono Jul 14, 2023
@lewing lewing requested a review from vargaz July 14, 2023 19:25
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lewing commented Jul 14, 2023 •
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Are we confident that this handles all the cases where wasm might transition to the interpreter appropriately?

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radical commented Jul 14, 2023

Also, test needed in src/mono/wasm/Wasm.Build.Tests.

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radical commented Jul 14, 2023

And could you please add some detail about what the PR is doing, like what the default is for the property, and what it will do, and/or affect?

@radical radical added the arch-wasm WebAssembly architecture label Jul 14, 2023
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ghost commented Jul 14, 2023

Tagging subscribers to 'arch-wasm': @lewing
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Issue Details

Fixes #88696

Author: fanyang-mono
Assignees: fanyang-mono
Labels:

arch-wasm, area-Build-mono
Milestone: -

@radical radical added this to the 8.0.0 milestone Jul 14, 2023
This was referenced Jul 16, 2023
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@fanyang-mono fanyang-mono changed the title [WASM] Add ILStrip task to wasm app build process [WASM][WIP] Add ILStrip task to wasm app build process Jul 16, 2023
@vargaz
[mono][aot] Avoid adding some methods to the compiled method file.
074abf0 
* Methods which have 'deopt' set can enter the interpreter during EH.
* Methods which have 'interp_entry_only' set are AOTed, but the AOT
  code is only used to enter the interpreter.
@vargaz vargaz requested a review from lambdageek as a code owner July 17, 2023 16:05
@build-analysis build-analysis bot mentioned this pull request Jul 17, 2023
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lewing commented Jul 26, 2023

cc @kg

@fanyang-mono fanyang-mono marked this pull request as draft July 26, 2023 20:20
@fanyang-mono fanyang-mono mentioned this pull request Jul 27, 2023
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Are we confident that this handles all the cases where wasm might transition to the interpreter appropriately?

I am trying to test it with as many apps as I could get a hold on before merging it. TBH, I can't guarantee that this feature is going to work 100% for all wasm apps, that's why it is off by default.

@build-analysis build-analysis bot mentioned this pull request Aug 7, 2023
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vargaz commented Aug 9, 2023

The mono changes look ok to me.

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lambdageek
lambdageek approved these changes Aug 9, 2023
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LGTM. Consider changing WASMStripIL to WasmStripIL.

Is it worth calling out that this only makes sense with AOT right in the property name? Maybe WasmStripILAfterAOT ?

src/mono/wasm/build/WasmApp.targets Outdated Show resolved Hide resolved
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Will enable WASM AOT tests with WasmStripILAfterAOT =true in a follow-up PR.

@fanyang-mono fanyang-mono merged commit 867e185 into dotnet:main Aug 10, 2023
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@BrzVlad BrzVlad BrzVlad left review comments

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@lambdageek lambdageek lambdageek approved these changes

@kg kg kg approved these changes

@SamMonoRT SamMonoRT Awaiting requested review from SamMonoRT

@kotlarmilos kotlarmilos Awaiting requested review from kotlarmilos kotlarmilos is a code owner

@marek-safar marek-safar Awaiting requested review from marek-safar

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[WASM] Enable new IL trim feature for WASM apps
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@fanyang-mono @lewing @radical @vargaz @kg @lambdageek @BrzVlad