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[Distributed] IRGen: Forward distributed method results through accessor

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Accessor infers result(s) from the underlying distributed method its
going to call, and forwards all of the results produced by such call
up to the caller.
This commit is contained in:
Pavel Yaskevich
2021-11-23 01:06:39 -08:00
committed by Pavel Yaskevich
parent a866a7a53e
commit 185a6630f1
1 changed files with 13 additions and 5 deletions
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18
lib/IRGen/GenDistributed.cpp
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@@ -109,14 +109,16 @@ IRGenModule::getAddrOfDistributedMethodAccessor(SILFunction *F,
.withRepresentation(SILFunctionTypeRepresentation::Thick)
.build();
auto methodTy = F->getLoweredFunctionType();
// Accessor gets argument value buffer and a reference to `self` of
// the actor and produces a call to the distributed thunk.
// the actor and produces a call to the distributed thunk forwarding
// its result(s) out.
auto accessorType = SILFunctionType::get(
/*genericSignature=*/nullptr, extInfo, SILCoroutineKind::None,
ParameterConvention::Direct_Guaranteed,
{getParamForArguments()},
/*Yields=*/{},
/*Results=*/{},
/*Results=*/methodTy->getResults(),
/*ErrorResult=*/None,
/*patternSubs=*/SubstitutionMap(),
/*invocationSubs=*/SubstitutionMap(), Context);
@@ -221,6 +223,10 @@ Explosion DistributedAccessor::computeArguments(llvm::Value *argumentBuffer) {
}
void DistributedAccessor::emit() {
auto methodTy = Method->getLoweredFunctionType();
SILFunctionConventions conv(methodTy, IGF.getSILModule());
TypeExpansionContext expansionContext = IGM.getMaximalTypeExpansionContext();
auto params = IGF.collectParameters();
// UnsafeRawPointer that holds all of the argument values
@@ -235,8 +241,7 @@ void DistributedAccessor::emit() {
// Step two, let's form and emit a call to the distributed method
// using computed argument explosion.
{
auto fnType = Method->getLoweredFunctionType();
GenericContextScope scope(IGM, fnType->getInvocationGenericSignature());
GenericContextScope scope(IGM, methodTy->getInvocationGenericSignature());
Explosion result;
@@ -255,7 +260,10 @@ void DistributedAccessor::emit() {
return;
}
// TODO: Emit result if method has one or more.
auto resultTy = conv.getSILResultType(expansionContext);
IGF.emitScalarReturn(resultTy, resultTy, result,
/*swiftCCReturn=*/false,
/*isOutlined=*/false);
}
}