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[AutoDiff] Remove unused joinElementTypes* methods. #28598

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Dec 6, 2019
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[AutoDiff] Remove unused joinElementTypes* methods. #28598

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25 changes: 0 additions & 25 deletions lib/SILOptimizer/Mandatory/Differentiation.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -116,31 +116,6 @@ static void collectAllActualResultsInTypeOrder(
}
}

/// Given a range of types, joins these into a single type. If there's exactly
/// one element type, returns that element type. Otherwise, creates a tuple type
/// of all element types.
template <typename TypeRange>
static CanType joinElementTypes(TypeRange &&range, const ASTContext &ctx) {
if (range.size() == 1)
return range.front();
auto typeElts =
map<SmallVector<TupleTypeElt, 8>>(range, [&](Type type) { return type; });
return TupleType::get(typeElts, ctx);
}

/// Given a range of SIL values, retrieves the canonical types of these values,
/// and joins these types into a single type.
template <typename SILValueRange>
static CanType joinElementTypesFromValues(SILValueRange &&range,
const ASTContext &ctx) {
if (range.size() == 1)
return range.front()->getType().getASTType();
SmallVector<TupleTypeElt, 8> elts;
transform(range, elts.begin(),
[&](SILValue val) { return val->getType().getASTType(); });
return TupleType::get(elts, ctx)->getCanonicalType();
}

/// Returns the "constrained" derivative generic signature given:
/// - An original SIL function type.
/// - A wrt parameter index subset.
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