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Mangling and demangling support for SIL @box.

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The SIL optimizer's closure specialization pass clones functions that
take closures as arguments and generates a new function with a direct
call to the closure function. The cloned function has new arguments
added for the values that are captured by the closure.

In the cases where the closure takes a @box argument, we were hitting an
assert attempting to mangle the name of the newly generated function,
since it now has a @box argument as a parameter. We don't normally
expect @box arguments during mangling because they do not exist prior to
SILGen, but since we generate new manglings throughout the optimizer we
need to be able to mangle (and demangle) these types.

Fixes rdar://problem/23893290.
This commit is contained in:
Mark Lacey
2015-12-16 11:32:23 -08:00
parent 7b323a8460
commit ae81a44ab3
5 changed files with 80 additions and 0 deletions
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include/swift/Basic/DemangleNodes.def
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@@ -128,6 +128,7 @@ NODE(QualifiedArchetype)
NODE(ReabstractionThunk)
NODE(ReabstractionThunkHelper)
NODE(ReturnType)
NODE(SILBoxType)
NODE(SelfTypeRef)
CONTEXT_NODE(Setter)
NODE(SpecializationPassID)