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SILCombine: Fix update of substitution map when substituting opened opaque archetypes

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When performing the substitution of the 'concrete' type that happens to
be an opened archetype we need to force the substitution to actually
call the conformance remapping function.

rdar://62202282
SR-12571
This commit is contained in:
Arnold Schwaighofer
2020-04-27 09:24:15 -07:00
parent c80776bd1a
commit b5f5495e98
4 changed files with 97 additions and 3 deletions
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3
lib/AST/ProtocolConformance.cpp
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@@ -122,7 +122,8 @@ ProtocolConformanceRef::subst(Type origType,
// Opened existentials trivially conform and do not need to go through
// substitution map lookup.
if (substType->isOpenedExistential())
if (substType->isOpenedExistential() &&
!options.contains(SubstFlags::ForceSubstituteOpenedExistentials))
return *this;
auto *proto = getRequirement();