[Wasm RyuJit] Ind write barriers, direct helper calls, more#124113
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AndyAyersMS wants to merge 3 commits intodotnet:mainfrom
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[Wasm RyuJit] Ind write barriers, direct helper calls, more#124113AndyAyersMS wants to merge 3 commits intodotnet:mainfrom
AndyAyersMS wants to merge 3 commits intodotnet:mainfrom
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AndyAyersMS
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Feb 6, 2026
AndyAyersMS
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- implement codegen for write barrier helper calls
- support direct calls to helpers
- decorate call targets with their symbolic names in dumps/disasm
* implement codegen for write barrier helper calls * support direct calls to helpers * decorate call targets with their symbolic names in dumps/disasm
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fyi @dotnet/jit-contrib |
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Pull request overview
This PR extends the CoreCLR WASM JIT backend to better support runtime helper calls and GC write barriers, and improves dump/disasm readability by annotating call targets with symbolic names.
Changes:
- Add disasm/dump decoration for call targets in
emitwasm.cppusing recorded method handles. - Implement WASM
GT_STOREINDwrite barrier codegen by routing togenGCWriteBarrier. - Enable direct helper-call emission in WASM codegen and adjust
codegencommon.cppTARGET_WASMguards to keep non-WASM-only code excluded while sharing write-barrier helpers.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| src/coreclr/jit/emitwasm.cpp | Prints call target method names in verbose dumps/disasm when debug info is present. |
| src/coreclr/jit/codegenwasm.cpp | Adds write-barrier handling for STOREIND and emits helper calls via genEmitHelperCall. |
| src/coreclr/jit/codegencommon.cpp | Refactors TARGET_WASM preprocessor guards to share write-barrier helper selection while excluding non-WASM-only sections. |
kg
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Feb 7, 2026
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SingleAccretion
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Feb 7, 2026
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