[ObjC] Rewrite Obj-C workflow in Rust #7299
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Having multiple different types of analysis of Perhaps there's some way I'm missing to communicate data between different activities that would allow me to have an "identify call sites" activity that call type adjustment and direct call rewriting activities could depend on so they could reuse data that it computes. |
emesare
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Aug 22, 2025
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…value} These are available on `LowLevelILFunction<M, SSA>`.
1. Some SSA-specific functions are now implemented on `LowLevelILFunction<M, SSA>` rather than `Ref<LowLevelILFunction<M, SSA>>`. 2. A lifting helper for `LLIL_TAILCALL` is added to `LowLevelILFunction`. 3. `PossibleValueSet::ImportedAddressValue` now holds the value.
This is functionally equivalent to the previous workflow_objc, with the following changes: 1. It mutates the `core.function.metaAnalysis` workflow rather than registering a new named workflow. The activities now all check for the presence of the Objective-C metadata added by `ObjCProcessor` to determine whether they should do work, rather than relying on `MachoView` to override the function workflow when Objective-C metadata is present. This fixes #6779. 2. The auto-inlining of `objc_msgSend` selector stub functions is performed in a separate activity from the processing of `objc_msgSend` call sites. The selector stub inlining activity is configured so that it does not run in `DSCView` as the shared cache needs different behavior for stub functions more generally that `SharedCacheWorkflow` already provides. 3. The way that types like `id` and `SEL` are referenced is fixed so that they show up as `id` rather than `objc_struct*`. This also replaces the Objective-C portion of the shared cache's workflow, and incorporates several bug fixes that had been applied to it but not the standalone Objective-C workflow.
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This is functionally equivalent to the previous workflow_objc, with the following changes:
core.function.metaAnalysisworkflow rather than registering a new named workflow. The activities now all check for the presence of the Objective-C metadata added byObjCProcessorto determine whether they should do work, rather than relying onMachoViewto override the function workflow when Objective-C metadata is present. This fixes It should be easier to add additional activities to Objective-C and shared cache workflows #6779.objc_msgSendselector stub functions is performed in a separate activity from the processing ofobjc_msgSendcall sites. The selector stub inlining activity is configured so that it does not run inDSCViewas the shared cache needs different behavior for stub functions more generally thatSharedCacheWorkflowalready provides.idandSELare referenced is fixed so that they show up asidrather thanobjc_struct*.This also replaces the Objective-C portion of the shared cache's workflow, and incorporates several bug fixes that had been applied to it but not the standalone Objective-C workflow.