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[5.5] Fix taskWait function family calls on arm64e #37985

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Merged
merged 1 commit into from
Jun 23, 2021
Merged

[5.5] Fix taskWait function family calls on arm64e #37985

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11 changes: 10 additions & 1 deletion lib/IRGen/GenCall.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2623,7 +2623,16 @@ class AsyncCallEmission final : public CallEmission {
assert(currentResumeFn == nullptr);
currentResumeFn =
IGF.Builder.CreateIntrinsicCall(llvm::Intrinsic::coro_async_resume, {});
return currentResumeFn;
auto signedResumeFn = currentResumeFn;
// Sign the task resume function with the C function pointer schema.
if (auto schema = IGF.IGM.getOptions().PointerAuth.FunctionPointers) {
// TODO: use the Clang type for TaskContinuationFunction*
// to make this work with type diversity.
auto authInfo =
PointerAuthInfo::emit(IGF, schema, nullptr, PointerAuthEntity());
signedResumeFn = emitPointerAuthSign(IGF, signedResumeFn, authInfo);
}
return signedResumeFn;
}


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