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[wasm][coreclr] Strip R2R debug info by default for browser-wasm publish #134689

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Merged
lewing merged 3 commits into from
Sep 26, 2026
Merged

[wasm][coreclr] Strip R2R debug info by default for browser-wasm publish #134689

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0df9721
[wasm][coreclr] Strip R2R debug info by default for browser-wasm publish
lewing Sep 25, 2026
209fa10
[wasm][coreclr] Invalidate R2R images when crossgen2 arguments change
lewing Sep 25, 2026
0b6cc72
Drop Apple mobile reference from strip-debug-info comment
lewing Sep 25, 2026
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16 changes: 16 additions & 0 deletions ...soft.NET.Sdk.WebAssembly.Pack/build/Microsoft.NET.Sdk.WebAssembly.Browser.CoreCLR.targets
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,9 @@ Copyright (c) .NET Foundation. All rights reserved.
<PublishReadyToRunCrossgen2ExtraArgs>$(PublishReadyToRunCrossgen2ExtraArgs);--opt-cross-module:*</PublishReadyToRunCrossgen2ExtraArgs>
<!-- NYI/SIMD methods crossgen2 can't emit into R2R fall back to the runtime JIT. -->
<PublishReadyToRunCrossgen2ExtraArgs>$(PublishReadyToRunCrossgen2ExtraArgs);--codegenopt:JitWasmNyiToR2RUnsupported=1;--codegenopt:JitWasmSimdNyiToR2RUnsupported=1</PublishReadyToRunCrossgen2ExtraArgs>
<!-- Strip R2R debug info (IL offset maps and variable locations) to minimize download size.
Set PublishReadyToRunStripDebugInfo=false to keep it for debugging R2R code. -->
<PublishReadyToRunCrossgen2ExtraArgs Condition="'$(PublishReadyToRunStripDebugInfo)' != 'false'">$(PublishReadyToRunCrossgen2ExtraArgs);--strip-debug-info</PublishReadyToRunCrossgen2ExtraArgs>
</PropertyGroup>

<!-- Prebuilt R2R probe directory for ConvertDllsToWebcil. PublishTrimmed is deliberately not consulted:
Expand Down Expand Up @@ -237,6 +240,19 @@ Copyright (c) .NET Foundation. All rights reserved.
<_ReadyToRunCompilerInputs Include="$(_WasmResolvedCrossgen2Dir)crossgen2*;$(_WasmResolvedCrossgen2Dir)clrjit_universal_wasm_*"
Condition="'$(_WasmResolvedCrossgen2Dir)' != ''" />
</ItemGroup>
<!-- Crossgen2 arguments (e.g. toggling PublishReadyToRunStripDebugInfo) don't change any file input, so
stamp them; WriteOnlyWhenDifferent bumps the timestamp only when the arguments change. -->
<PropertyGroup>
<_WasmReadyToRunArgsStamp>$(IntermediateOutputPath)wasm-r2r-args.stamp</_WasmReadyToRunArgsStamp>
</PropertyGroup>
<WriteLinesToFile File="$(_WasmReadyToRunArgsStamp)"
Lines="$(PublishReadyToRunCrossgen2ExtraArgs)"
Overwrite="true"
WriteOnlyWhenDifferent="true" />
<ItemGroup>
<_ReadyToRunCompilerInputs Include="$(_WasmReadyToRunArgsStamp)" />
<FileWrites Include="$(_WasmReadyToRunArgsStamp)" />
</ItemGroup>
</Target>

<!-- Delete per-app images and composite component stubs left in obj/R2R by a previous build or
Expand Down