Port getInterfaceType() patterns in libAST

lib/AST/ASTContext.cpp

@@ -922,8 +922,8 @@ static FuncDecl *findLibraryIntrinsic(const ASTContext &ctx,
   ctx.lookupInSwiftModule(name, results);
   if (results.size() == 1) {
     if (auto FD = dyn_cast<FuncDecl>(results.front())) {
-      if (auto *resolver = ctx.getLazyResolver())
-        resolver->resolveDeclSignature(FD);
+      // FIXME(InterfaceTypeRequest): Remove this.
+      (void)FD->getInterfaceType();
       return FD;
     }
   }
@@ -987,9 +987,6 @@ lookupOperatorFunc(const ASTContext &ctx, StringRef oper, Type contextType,
       if (!contextTy->isEqual(contextType)) continue;
     }
 
-    if (auto resolver = ctx.getLazyResolver())
-      resolver->resolveDeclSignature(fnDecl);
-
     auto *funcTy = getIntrinsicCandidateType(fnDecl, /*allowTypeMembers=*/true);
     if (!funcTy)
       continue;
@@ -3969,8 +3966,6 @@ static NominalTypeDecl *findUnderlyingTypeInModule(ASTContext &ctx,
 
     // Look through typealiases.
     if (auto typealias = dyn_cast<TypeAliasDecl>(result)) {
-      if (auto resolver = ctx.getLazyResolver())
-        resolver->resolveDeclSignature(typealias);
       return typealias->getDeclaredInterfaceType()->getAnyNominal();
     }
   }

lib/AST/ASTMangler.cpp

@@ -2343,13 +2343,7 @@ CanType ASTMangler::getDeclTypeForMangling(
   parentGenericSig = nullptr;
 
   auto &C = decl->getASTContext();
-  if (!decl->hasInterfaceType() && !decl->getDeclContext()->isLocalContext()) {
-    if (auto *resolver = C.getLazyResolver()) {
-      resolver->resolveDeclSignature(const_cast<ValueDecl *>(decl));
-    }
-  }
-
-  if (!decl->hasInterfaceType() || decl->getInterfaceType()->is<ErrorType>()) {
+  if (!decl->getInterfaceType() || decl->getInterfaceType()->is<ErrorType>()) {
     if (isa<AbstractFunctionDecl>(decl))
       return CanFunctionType::get({AnyFunctionType::Param(C.TheErrorType)},
                                   C.TheErrorType);

lib/AST/Decl.cpp

@@ -6555,17 +6555,6 @@ static bool requiresNewVTableEntry(const AbstractFunctionDecl *decl) {
   if (decl->isEffectiveLinkageMoreVisibleThan(base))
     return true;
 
-  // FIXME: Remove this once getInterfaceType() has been request-ified.
-  if (!decl->hasInterfaceType()) {
-    ctx.getLazyResolver()->resolveDeclSignature(
-      const_cast<AbstractFunctionDecl *>(decl));
-  }
-
-  if (!base->hasInterfaceType()) {
-    ctx.getLazyResolver()->resolveDeclSignature(
-      const_cast<AbstractFunctionDecl *>(base));
-  }
-
   // If the method overrides something, we only need a new entry if the
   // override has a more general AST type. However an abstraction
   // change is OK; we don't want to add a whole new vtable entry just

lib/AST/Module.cpp

@@ -1824,7 +1824,8 @@ SourceFile::lookupOpaqueResultType(StringRef MangledName,
     while (!UnvalidatedDeclsWithOpaqueReturnTypes.empty()) {
       ValueDecl *decl = *UnvalidatedDeclsWithOpaqueReturnTypes.begin();
       UnvalidatedDeclsWithOpaqueReturnTypes.erase(decl);
-      resolver->resolveDeclSignature(decl);
+      // FIXME(InterfaceTypeRequest): Remove this.
+      (void)decl->getInterfaceType();
     }
     
     found = ValidatedOpaqueReturnTypes.find(MangledName);

lib/AST/NameLookup.cpp

@@ -434,8 +434,6 @@ static void recordShadowedDecls(ArrayRef<ValueDecl *> decls,
   if (decls.size() < 2)
     return;
 
-  auto typeResolver = decls[0]->getASTContext().getLazyResolver();
-
   // Categorize all of the declarations based on their overload signatures.
   llvm::SmallDenseMap<CanType, llvm::TinyPtrVector<ValueDecl *>> collisions;
   llvm::SmallVector<CanType, 2> collisionTypes;
@@ -463,19 +461,16 @@ static void recordShadowedDecls(ArrayRef<ValueDecl *> decls,
     CanType signature;
 
     if (!isa<TypeDecl>(decl)) {
-      // We need an interface type here.
-      if (typeResolver)
-        typeResolver->resolveDeclSignature(decl);
-
       // If the decl is currently being validated, this is likely a recursive
       // reference and we'll want to skip ahead so as to avoid having its type
       // attempt to desugar itself.
-      if (!decl->hasInterfaceType())
+      auto ifaceType = decl->getInterfaceType();
+      if (!ifaceType)
         continue;
 
       // FIXME: the canonical type makes a poor signature, because we don't
       // canonicalize away default arguments.
-      signature = decl->getInterfaceType()->getCanonicalType();
+      signature = ifaceType->getCanonicalType();
 
       // FIXME: The type of a variable or subscript doesn't include
       // enough context to distinguish entities from different

lib/AST/USRGeneration.cpp

@@ -241,11 +241,12 @@ swift::USRGenerationRequest::evaluate(Evaluator &evaluator,
     }
   }
 
-  if (!D->hasInterfaceType())
+  auto declIFaceTy = D->getInterfaceType();
+  if (!declIFaceTy)
     return std::string();
 
   // Invalid code.
-  if (D->getInterfaceType().findIf([](Type t) -> bool {
+  if (declIFaceTy.findIf([](Type t) -> bool {
         return t->is<ModuleType>();
       }))
     return std::string();