YQ Connector: support managed ClickHouse

Со стороны dqrun можно обратиться к инстансу коннектора, который работает на streaming стенде, и извлечь данные из облачного CH.

1 files changed, 852 insertions, 0 deletions

diff --git a/contrib/libs/clang14/lib/AST/ComputeDependence.cpp b/contrib/libs/clang14/lib/AST/ComputeDependence.cpp
new file mode 100644
index 0000000000..5648cf2103
--- /dev/null
+++ b/contrib/libs/clang14/lib/AST/ComputeDependence.cpp
@@ -0,0 +1,852 @@
+//===- ComputeDependence.cpp ----------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/AST/ComputeDependence.h"
+#include "clang/AST/Attr.h"
+#include "clang/AST/DeclCXX.h"
+#include "clang/AST/DeclarationName.h"
+#include "clang/AST/DependenceFlags.h"
+#include "clang/AST/Expr.h"
+#include "clang/AST/ExprCXX.h"
+#include "clang/AST/ExprConcepts.h"
+#include "clang/AST/ExprObjC.h"
+#include "clang/AST/ExprOpenMP.h"
+#include "clang/Basic/ExceptionSpecificationType.h"
+#include "llvm/ADT/ArrayRef.h"
+
+using namespace clang;
+
+ExprDependence clang::computeDependence(FullExpr *E) {
+  return E->getSubExpr()->getDependence();
+}
+
+ExprDependence clang::computeDependence(OpaqueValueExpr *E) {
+  auto D = toExprDependence(E->getType()->getDependence());
+  if (auto *S = E->getSourceExpr())
+    D |= S->getDependence();
+  assert(!(D & ExprDependence::UnexpandedPack));
+  return D;
+}
+
+ExprDependence clang::computeDependence(ParenExpr *E) {
+  return E->getSubExpr()->getDependence();
+}
+
+ExprDependence clang::computeDependence(UnaryOperator *E,
+                                        const ASTContext &Ctx) {
+  ExprDependence Dep = toExprDependence(E->getType()->getDependence()) |
+                       E->getSubExpr()->getDependence();
+
+  // C++ [temp.dep.constexpr]p5:
+  //   An expression of the form & qualified-id where the qualified-id names a
+  //   dependent member of the current instantiation is value-dependent. An
+  //   expression of the form & cast-expression is also value-dependent if
+  //   evaluating cast-expression as a core constant expression succeeds and
+  //   the result of the evaluation refers to a templated entity that is an
+  //   object with static or thread storage duration or a member function.
+  //
+  // What this amounts to is: constant-evaluate the operand and check whether it
+  // refers to a templated entity other than a variable with local storage.
+  if (Ctx.getLangOpts().CPlusPlus && E->getOpcode() == UO_AddrOf &&
+      !(Dep & ExprDependence::Value)) {
+    Expr::EvalResult Result;
+    SmallVector<PartialDiagnosticAt, 8> Diag;
+    Result.Diag = &Diag;
+    // FIXME: This doesn't enforce the C++98 constant expression rules.
+    if (E->getSubExpr()->EvaluateAsConstantExpr(Result, Ctx) && Diag.empty() &&
+        Result.Val.isLValue()) {
+      auto *VD = Result.Val.getLValueBase().dyn_cast<const ValueDecl *>();
+      if (VD && VD->isTemplated()) {
+        auto *VarD = dyn_cast<VarDecl>(VD);
+        if (!VarD || !VarD->hasLocalStorage())
+          Dep |= ExprDependence::Value;
+      }
+    }
+  }
+
+  return Dep;
+}
+
+ExprDependence clang::computeDependence(UnaryExprOrTypeTraitExpr *E) {
+  // Never type-dependent (C++ [temp.dep.expr]p3).
+  // Value-dependent if the argument is type-dependent.
+  if (E->isArgumentType())
+    return turnTypeToValueDependence(
+        toExprDependence(E->getArgumentType()->getDependence()));
+
+  auto ArgDeps = E->getArgumentExpr()->getDependence();
+  auto Deps = ArgDeps & ~ExprDependence::TypeValue;
+  // Value-dependent if the argument is type-dependent.
+  if (ArgDeps & ExprDependence::Type)
+    Deps |= ExprDependence::Value;
+  // Check to see if we are in the situation where alignof(decl) should be
+  // dependent because decl's alignment is dependent.
+  auto ExprKind = E->getKind();
+  if (ExprKind != UETT_AlignOf && ExprKind != UETT_PreferredAlignOf)
+    return Deps;
+  if ((Deps & ExprDependence::Value) && (Deps & ExprDependence::Instantiation))
+    return Deps;
+
+  auto *NoParens = E->getArgumentExpr()->IgnoreParens();
+  const ValueDecl *D = nullptr;
+  if (const auto *DRE = dyn_cast<DeclRefExpr>(NoParens))
+    D = DRE->getDecl();
+  else if (const auto *ME = dyn_cast<MemberExpr>(NoParens))
+    D = ME->getMemberDecl();
+  if (!D)
+    return Deps;
+  for (const auto *I : D->specific_attrs<AlignedAttr>()) {
+    if (I->isAlignmentErrorDependent())
+      Deps |= ExprDependence::Error;
+    if (I->isAlignmentDependent())
+      Deps |= ExprDependence::ValueInstantiation;
+  }
+  return Deps;
+}
+
+ExprDependence clang::computeDependence(ArraySubscriptExpr *E) {
+  return E->getLHS()->getDependence() | E->getRHS()->getDependence();
+}
+
+ExprDependence clang::computeDependence(MatrixSubscriptExpr *E) {
+  return E->getBase()->getDependence() | E->getRowIdx()->getDependence() |
+         (E->getColumnIdx() ? E->getColumnIdx()->getDependence()
+                            : ExprDependence::None);
+}
+
+ExprDependence clang::computeDependence(CompoundLiteralExpr *E) {
+  return toExprDependence(E->getTypeSourceInfo()->getType()->getDependence()) |
+         turnTypeToValueDependence(E->getInitializer()->getDependence());
+}
+
+ExprDependence clang::computeDependence(CastExpr *E) {
+  // Cast expressions are type-dependent if the type is
+  // dependent (C++ [temp.dep.expr]p3).
+  // Cast expressions are value-dependent if the type is
+  // dependent or if the subexpression is value-dependent.
+  auto D = toExprDependence(E->getType()->getDependence());
+  if (E->getStmtClass() == Stmt::ImplicitCastExprClass) {
+    // An implicit cast expression doesn't (lexically) contain an
+    // unexpanded pack, even if its target type does.
+    D &= ~ExprDependence::UnexpandedPack;
+  }
+  if (auto *S = E->getSubExpr())
+    D |= S->getDependence() & ~ExprDependence::Type;
+  return D;
+}
+
+ExprDependence clang::computeDependence(BinaryOperator *E) {
+  return E->getLHS()->getDependence() | E->getRHS()->getDependence();
+}
+
+ExprDependence clang::computeDependence(ConditionalOperator *E) {
+  // The type of the conditional operator depends on the type of the conditional
+  // to support the GCC vector conditional extension. Additionally,
+  // [temp.dep.expr] does specify state that this should be dependent on ALL sub
+  // expressions.
+  return E->getCond()->getDependence() | E->getLHS()->getDependence() |
+         E->getRHS()->getDependence();
+}
+
+ExprDependence clang::computeDependence(BinaryConditionalOperator *E) {
+  return E->getCommon()->getDependence() | E->getFalseExpr()->getDependence();
+}
+
+ExprDependence clang::computeDependence(StmtExpr *E, unsigned TemplateDepth) {
+  auto D = toExprDependence(E->getType()->getDependence());
+  // Propagate dependence of the result.
+  if (const auto *CompoundExprResult =
+          dyn_cast_or_null<ValueStmt>(E->getSubStmt()->getStmtExprResult()))
+    if (const Expr *ResultExpr = CompoundExprResult->getExprStmt())
+      D |= ResultExpr->getDependence();
+  // Note: we treat a statement-expression in a dependent context as always
+  // being value- and instantiation-dependent. This matches the behavior of
+  // lambda-expressions and GCC.
+  if (TemplateDepth)
+    D |= ExprDependence::ValueInstantiation;
+  // A param pack cannot be expanded over stmtexpr boundaries.
+  return D & ~ExprDependence::UnexpandedPack;
+}
+
+ExprDependence clang::computeDependence(ConvertVectorExpr *E) {
+  auto D = toExprDependence(E->getType()->getDependence()) |
+           E->getSrcExpr()->getDependence();
+  if (!E->getType()->isDependentType())
+    D &= ~ExprDependence::Type;
+  return D;
+}
+
+ExprDependence clang::computeDependence(ChooseExpr *E) {
+  if (E->isConditionDependent())
+    return ExprDependence::TypeValueInstantiation |
+           E->getCond()->getDependence() | E->getLHS()->getDependence() |
+           E->getRHS()->getDependence();
+
+  auto Cond = E->getCond()->getDependence();
+  auto Active = E->getLHS()->getDependence();
+  auto Inactive = E->getRHS()->getDependence();
+  if (!E->isConditionTrue())
+    std::swap(Active, Inactive);
+  // Take type- and value- dependency from the active branch. Propagate all
+  // other flags from all branches.
+  return (Active & ExprDependence::TypeValue) |
+         ((Cond | Active | Inactive) & ~ExprDependence::TypeValue);
+}
+
+ExprDependence clang::computeDependence(ParenListExpr *P) {
+  auto D = ExprDependence::None;
+  for (auto *E : P->exprs())
+    D |= E->getDependence();
+  return D;
+}
+
+ExprDependence clang::computeDependence(VAArgExpr *E) {
+  auto D =
+      toExprDependence(E->getWrittenTypeInfo()->getType()->getDependence()) |
+      (E->getSubExpr()->getDependence() & ~ExprDependence::Type);
+  return D & ~ExprDependence::Value;
+}
+
+ExprDependence clang::computeDependence(NoInitExpr *E) {
+  return toExprDependence(E->getType()->getDependence()) &
+         (ExprDependence::Instantiation | ExprDependence::Error);
+}
+
+ExprDependence clang::computeDependence(ArrayInitLoopExpr *E) {
+  auto D = E->getCommonExpr()->getDependence() |
+           E->getSubExpr()->getDependence() | ExprDependence::Instantiation;
+  if (!E->getType()->isInstantiationDependentType())
+    D &= ~ExprDependence::Instantiation;
+  return turnTypeToValueDependence(D);
+}
+
+ExprDependence clang::computeDependence(ImplicitValueInitExpr *E) {
+  return toExprDependence(E->getType()->getDependence()) &
+         ExprDependence::Instantiation;
+}
+
+ExprDependence clang::computeDependence(ExtVectorElementExpr *E) {
+  return E->getBase()->getDependence();
+}
+
+ExprDependence clang::computeDependence(BlockExpr *E) {
+  auto D = toExprDependence(E->getType()->getDependence());
+  if (E->getBlockDecl()->isDependentContext())
+    D |= ExprDependence::Instantiation;
+  return D & ~ExprDependence::UnexpandedPack;
+}
+
+ExprDependence clang::computeDependence(AsTypeExpr *E) {
+  auto D = toExprDependence(E->getType()->getDependence()) |
+           E->getSrcExpr()->getDependence();
+  if (!E->getType()->isDependentType())
+    D &= ~ExprDependence::Type;
+  return D;
+}
+
+ExprDependence clang::computeDependence(CXXRewrittenBinaryOperator *E) {
+  return E->getSemanticForm()->getDependence();
+}
+
+ExprDependence clang::computeDependence(CXXStdInitializerListExpr *E) {
+  auto D = turnTypeToValueDependence(E->getSubExpr()->getDependence());
+  D |= toExprDependence(E->getType()->getDependence()) &
+       (ExprDependence::Type | ExprDependence::Error);
+  return D;
+}
+
+ExprDependence clang::computeDependence(CXXTypeidExpr *E) {
+  auto D = ExprDependence::None;
+  if (E->isTypeOperand())
+    D = toExprDependence(
+        E->getTypeOperandSourceInfo()->getType()->getDependence());
+  else
+    D = turnTypeToValueDependence(E->getExprOperand()->getDependence());
+  // typeid is never type-dependent (C++ [temp.dep.expr]p4)
+  return D & ~ExprDependence::Type;
+}
+
+ExprDependence clang::computeDependence(MSPropertyRefExpr *E) {
+  return E->getBaseExpr()->getDependence() & ~ExprDependence::Type;
+}
+
+ExprDependence clang::computeDependence(MSPropertySubscriptExpr *E) {
+  return E->getIdx()->getDependence();
+}
+
+ExprDependence clang::computeDependence(CXXUuidofExpr *E) {
+  if (E->isTypeOperand())
+    return turnTypeToValueDependence(toExprDependence(
+        E->getTypeOperandSourceInfo()->getType()->getDependence()));
+
+  return turnTypeToValueDependence(E->getExprOperand()->getDependence());
+}
+
+ExprDependence clang::computeDependence(CXXThisExpr *E) {
+  // 'this' is type-dependent if the class type of the enclosing
+  // member function is dependent (C++ [temp.dep.expr]p2)
+  auto D = toExprDependence(E->getType()->getDependence());
+  assert(!(D & ExprDependence::UnexpandedPack));
+  return D;
+}
+
+ExprDependence clang::computeDependence(CXXThrowExpr *E) {
+  auto *Op = E->getSubExpr();
+  if (!Op)
+    return ExprDependence::None;
+  return Op->getDependence() & ~ExprDependence::TypeValue;
+}
+
+ExprDependence clang::computeDependence(CXXBindTemporaryExpr *E) {
+  return E->getSubExpr()->getDependence();
+}
+
+ExprDependence clang::computeDependence(CXXScalarValueInitExpr *E) {
+  return toExprDependence(E->getType()->getDependence()) &
+         ~ExprDependence::TypeValue;
+}
+
+ExprDependence clang::computeDependence(CXXDeleteExpr *E) {
+  return turnTypeToValueDependence(E->getArgument()->getDependence());
+}
+
+ExprDependence clang::computeDependence(ArrayTypeTraitExpr *E) {
+  auto D = toExprDependence(E->getQueriedType()->getDependence());
+  if (auto *Dim = E->getDimensionExpression())
+    D |= Dim->getDependence();
+  return turnTypeToValueDependence(D);
+}
+
+ExprDependence clang::computeDependence(ExpressionTraitExpr *E) {
+  // Never type-dependent.
+  auto D = E->getQueriedExpression()->getDependence() & ~ExprDependence::Type;
+  // Value-dependent if the argument is type-dependent.
+  if (E->getQueriedExpression()->isTypeDependent())
+    D |= ExprDependence::Value;
+  return D;
+}
+
+ExprDependence clang::computeDependence(CXXNoexceptExpr *E, CanThrowResult CT) {
+  auto D = E->getOperand()->getDependence() & ~ExprDependence::TypeValue;
+  if (CT == CT_Dependent)
+    D |= ExprDependence::ValueInstantiation;
+  return D;
+}
+
+ExprDependence clang::computeDependence(PackExpansionExpr *E) {
+  return (E->getPattern()->getDependence() & ~ExprDependence::UnexpandedPack) |
+         ExprDependence::TypeValueInstantiation;
+}
+
+ExprDependence clang::computeDependence(SubstNonTypeTemplateParmExpr *E) {
+  return E->getReplacement()->getDependence();
+}
+
+ExprDependence clang::computeDependence(CoroutineSuspendExpr *E) {
+  if (auto *Resume = E->getResumeExpr())
+    return (Resume->getDependence() &
+            (ExprDependence::TypeValue | ExprDependence::Error)) |
+           (E->getCommonExpr()->getDependence() & ~ExprDependence::TypeValue);
+  return E->getCommonExpr()->getDependence() |
+         ExprDependence::TypeValueInstantiation;
+}
+
+ExprDependence clang::computeDependence(DependentCoawaitExpr *E) {
+  return E->getOperand()->getDependence() |
+         ExprDependence::TypeValueInstantiation;
+}
+
+ExprDependence clang::computeDependence(ObjCBoxedExpr *E) {
+  return E->getSubExpr()->getDependence();
+}
+
+ExprDependence clang::computeDependence(ObjCEncodeExpr *E) {
+  return toExprDependence(E->getEncodedType()->getDependence());
+}
+
+ExprDependence clang::computeDependence(ObjCIvarRefExpr *E) {
+  return turnTypeToValueDependence(E->getBase()->getDependence());
+}
+
+ExprDependence clang::computeDependence(ObjCPropertyRefExpr *E) {
+  if (E->isObjectReceiver())
+    return E->getBase()->getDependence() & ~ExprDependence::Type;
+  if (E->isSuperReceiver())
+    return toExprDependence(E->getSuperReceiverType()->getDependence()) &
+           ~ExprDependence::TypeValue;
+  assert(E->isClassReceiver());
+  return ExprDependence::None;
+}
+
+ExprDependence clang::computeDependence(ObjCSubscriptRefExpr *E) {
+  return E->getBaseExpr()->getDependence() | E->getKeyExpr()->getDependence();
+}
+
+ExprDependence clang::computeDependence(ObjCIsaExpr *E) {
+  return E->getBase()->getDependence() & ~ExprDependence::Type &
+         ~ExprDependence::UnexpandedPack;
+}
+
+ExprDependence clang::computeDependence(ObjCIndirectCopyRestoreExpr *E) {
+  return E->getSubExpr()->getDependence();
+}
+
+ExprDependence clang::computeDependence(OMPArraySectionExpr *E) {
+  auto D = E->getBase()->getDependence();
+  if (auto *LB = E->getLowerBound())
+    D |= LB->getDependence();
+  if (auto *Len = E->getLength())
+    D |= Len->getDependence();
+  return D;
+}
+
+ExprDependence clang::computeDependence(OMPArrayShapingExpr *E) {
+  auto D = E->getBase()->getDependence() |
+           toExprDependence(E->getType()->getDependence());
+  for (Expr *Dim: E->getDimensions())
+    if (Dim)
+      D |= Dim->getDependence();
+  return D;
+}
+
+ExprDependence clang::computeDependence(OMPIteratorExpr *E) {
+  auto D = toExprDependence(E->getType()->getDependence());
+  for (unsigned I = 0, End = E->numOfIterators(); I < End; ++I) {
+    if (auto *VD = cast_or_null<ValueDecl>(E->getIteratorDecl(I)))
+      D |= toExprDependence(VD->getType()->getDependence());
+    OMPIteratorExpr::IteratorRange IR = E->getIteratorRange(I);
+    if (Expr *BE = IR.Begin)
+      D |= BE->getDependence();
+    if (Expr *EE = IR.End)
+      D |= EE->getDependence();
+    if (Expr *SE = IR.Step)
+      D |= SE->getDependence();
+  }
+  return D;
+}
+
+/// Compute the type-, value-, and instantiation-dependence of a
+/// declaration reference
+/// based on the declaration being referenced.
+ExprDependence clang::computeDependence(DeclRefExpr *E, const ASTContext &Ctx) {
+  auto Deps = ExprDependence::None;
+
+  if (auto *NNS = E->getQualifier())
+    Deps |= toExprDependence(NNS->getDependence() &
+                             ~NestedNameSpecifierDependence::Dependent);
+
+  if (auto *FirstArg = E->getTemplateArgs()) {
+    unsigned NumArgs = E->getNumTemplateArgs();
+    for (auto *Arg = FirstArg, *End = FirstArg + NumArgs; Arg < End; ++Arg)
+      Deps |= toExprDependence(Arg->getArgument().getDependence());
+  }
+
+  auto *Decl = E->getDecl();
+  auto Type = E->getType();
+
+  if (Decl->isParameterPack())
+    Deps |= ExprDependence::UnexpandedPack;
+  Deps |= toExprDependence(Type->getDependence()) & ExprDependence::Error;
+
+  // C++ [temp.dep.expr]p3:
+  //   An id-expression is type-dependent if it contains:
+
+  //    - an identifier associated by name lookup with one or more declarations
+  //      declared with a dependent type
+  //
+  // [The "or more" case is not modeled as a DeclRefExpr. There are a bunch
+  // more bullets here that we handle by treating the declaration as having a
+  // dependent type if they involve a placeholder type that can't be deduced.]
+  if (Type->isDependentType())
+    return Deps | ExprDependence::TypeValueInstantiation;
+  else if (Type->isInstantiationDependentType())
+    Deps |= ExprDependence::Instantiation;
+
+  //    - a conversion-function-id that specifies a dependent type
+  if (Decl->getDeclName().getNameKind() ==
+      DeclarationName::CXXConversionFunctionName) {
+    QualType T = Decl->getDeclName().getCXXNameType();
+    if (T->isDependentType())
+      return Deps | ExprDependence::TypeValueInstantiation;
+
+    if (T->isInstantiationDependentType())
+      Deps |= ExprDependence::Instantiation;
+  }
+
+  //   - a template-id that is dependent,
+  //   - a nested-name-specifier or a qualified-id that names a member of an
+  //     unknown specialization
+  //   [These are not modeled as DeclRefExprs.]
+
+  //   or if it names a dependent member of the current instantiation that is a
+  //   static data member of type "array of unknown bound of T" for some T
+  //   [handled below].
+
+  // C++ [temp.dep.constexpr]p2:
+  //  An id-expression is value-dependent if:
+
+  //    - it is type-dependent [handled above]
+
+  //    - it is the name of a non-type template parameter,
+  if (isa<NonTypeTemplateParmDecl>(Decl))
+    return Deps | ExprDependence::ValueInstantiation;
+
+  //   - it names a potentially-constant variable that is initialized with an
+  //     expression that is value-dependent
+  if (const auto *Var = dyn_cast<VarDecl>(Decl)) {
+    if (Var->mightBeUsableInConstantExpressions(Ctx)) {
+      if (const Expr *Init = Var->getAnyInitializer()) {
+        if (Init->isValueDependent())
+          Deps |= ExprDependence::ValueInstantiation;
+        if (Init->containsErrors())
+          Deps |= ExprDependence::Error;
+      }
+    }
+
+    // - it names a static data member that is a dependent member of the
+    //   current instantiation and is not initialized in a member-declarator,
+    if (Var->isStaticDataMember() &&
+        Var->getDeclContext()->isDependentContext() &&
+        !Var->getFirstDecl()->hasInit()) {
+      const VarDecl *First = Var->getFirstDecl();
+      TypeSourceInfo *TInfo = First->getTypeSourceInfo();
+      if (TInfo->getType()->isIncompleteArrayType()) {
+        Deps |= ExprDependence::TypeValueInstantiation;
+      } else if (!First->hasInit()) {
+        Deps |= ExprDependence::ValueInstantiation;
+      }
+    }
+
+    return Deps;
+  }
+
+  //   - it names a static member function that is a dependent member of the
+  //     current instantiation
+  //
+  // FIXME: It's unclear that the restriction to static members here has any
+  // effect: any use of a non-static member function name requires either
+  // forming a pointer-to-member or providing an object parameter, either of
+  // which makes the overall expression value-dependent.
+  if (auto *MD = dyn_cast<CXXMethodDecl>(Decl)) {
+    if (MD->isStatic() && Decl->getDeclContext()->isDependentContext())
+      Deps |= ExprDependence::ValueInstantiation;
+  }
+
+  return Deps;
+}
+
+ExprDependence clang::computeDependence(RecoveryExpr *E) {
+  // RecoveryExpr is
+  //   - always value-dependent, and therefore instantiation dependent
+  //   - contains errors (ExprDependence::Error), by definition
+  //   - type-dependent if we don't know the type (fallback to an opaque
+  //     dependent type), or the type is known and dependent, or it has
+  //     type-dependent subexpressions.
+  auto D = toExprDependence(E->getType()->getDependence()) |
+           ExprDependence::ErrorDependent;
+  // FIXME: remove the type-dependent bit from subexpressions, if the
+  // RecoveryExpr has a non-dependent type.
+  for (auto *S : E->subExpressions())
+    D |= S->getDependence();
+  return D;
+}
+
+ExprDependence clang::computeDependence(SYCLUniqueStableNameExpr *E) {
+  return toExprDependence(E->getTypeSourceInfo()->getType()->getDependence());
+}
+
+ExprDependence clang::computeDependence(PredefinedExpr *E) {
+  return toExprDependence(E->getType()->getDependence()) &
+         ~ExprDependence::UnexpandedPack;
+}
+
+ExprDependence clang::computeDependence(CallExpr *E,
+                                        llvm::ArrayRef<Expr *> PreArgs) {
+  auto D = E->getCallee()->getDependence();
+  for (auto *A : llvm::makeArrayRef(E->getArgs(), E->getNumArgs())) {
+    if (A)
+      D |= A->getDependence();
+  }
+  for (auto *A : PreArgs)
+    D |= A->getDependence();
+  return D;
+}
+
+ExprDependence clang::computeDependence(OffsetOfExpr *E) {
+  auto D = turnTypeToValueDependence(
+      toExprDependence(E->getTypeSourceInfo()->getType()->getDependence()));
+  for (unsigned I = 0, N = E->getNumExpressions(); I < N; ++I)
+    D |= turnTypeToValueDependence(E->getIndexExpr(I)->getDependence());
+  return D;
+}
+
+ExprDependence clang::computeDependence(MemberExpr *E) {
+  auto *MemberDecl = E->getMemberDecl();
+  auto D = E->getBase()->getDependence();
+  if (FieldDecl *FD = dyn_cast<FieldDecl>(MemberDecl)) {
+    DeclContext *DC = MemberDecl->getDeclContext();
+    // dyn_cast_or_null is used to handle objC variables which do not
+    // have a declaration context.
+    CXXRecordDecl *RD = dyn_cast_or_null<CXXRecordDecl>(DC);
+    if (RD && RD->isDependentContext() && RD->isCurrentInstantiation(DC)) {
+      if (!E->getType()->isDependentType())
+        D &= ~ExprDependence::Type;
+    }
+
+    // Bitfield with value-dependent width is type-dependent.
+    if (FD && FD->isBitField() && FD->getBitWidth()->isValueDependent()) {
+      D |= ExprDependence::Type;
+    }
+  }
+  // FIXME: move remaining dependence computation from MemberExpr::Create()
+  return D;
+}
+
+ExprDependence clang::computeDependence(InitListExpr *E) {
+  auto D = ExprDependence::None;
+  for (auto *A : E->inits())
+    D |= A->getDependence();
+  return D;
+}
+
+ExprDependence clang::computeDependence(ShuffleVectorExpr *E) {
+  auto D = toExprDependence(E->getType()->getDependence());
+  for (auto *C : llvm::makeArrayRef(E->getSubExprs(), E->getNumSubExprs()))
+    D |= C->getDependence();
+  return D;
+}
+
+ExprDependence clang::computeDependence(GenericSelectionExpr *E,
+                                        bool ContainsUnexpandedPack) {
+  auto D = ContainsUnexpandedPack ? ExprDependence::UnexpandedPack
+                                  : ExprDependence::None;
+  for (auto *AE : E->getAssocExprs())
+    D |= AE->getDependence() & ExprDependence::Error;
+  D |= E->getControllingExpr()->getDependence() & ExprDependence::Error;
+
+  if (E->isResultDependent())
+    return D | ExprDependence::TypeValueInstantiation;
+  return D | (E->getResultExpr()->getDependence() &
+              ~ExprDependence::UnexpandedPack);
+}
+
+ExprDependence clang::computeDependence(DesignatedInitExpr *E) {
+  auto Deps = E->getInit()->getDependence();
+  for (auto D : E->designators()) {
+    auto DesignatorDeps = ExprDependence::None;
+    if (D.isArrayDesignator())
+      DesignatorDeps |= E->getArrayIndex(D)->getDependence();
+    else if (D.isArrayRangeDesignator())
+      DesignatorDeps |= E->getArrayRangeStart(D)->getDependence() |
+                        E->getArrayRangeEnd(D)->getDependence();
+    Deps |= DesignatorDeps;
+    if (DesignatorDeps & ExprDependence::TypeValue)
+      Deps |= ExprDependence::TypeValueInstantiation;
+  }
+  return Deps;
+}
+
+ExprDependence clang::computeDependence(PseudoObjectExpr *O) {
+  auto D = O->getSyntacticForm()->getDependence();
+  for (auto *E : O->semantics())
+    D |= E->getDependence();
+  return D;
+}
+
+ExprDependence clang::computeDependence(AtomicExpr *A) {
+  auto D = ExprDependence::None;
+  for (auto *E : llvm::makeArrayRef(A->getSubExprs(), A->getNumSubExprs()))
+    D |= E->getDependence();
+  return D;
+}
+
+ExprDependence clang::computeDependence(CXXNewExpr *E) {
+  auto D = toExprDependence(E->getType()->getDependence());
+  auto Size = E->getArraySize();
+  if (Size.hasValue() && *Size)
+    D |= turnTypeToValueDependence((*Size)->getDependence());
+  if (auto *I = E->getInitializer())
+    D |= turnTypeToValueDependence(I->getDependence());
+  for (auto *A : E->placement_arguments())
+    D |= turnTypeToValueDependence(A->getDependence());
+  return D;
+}
+
+ExprDependence clang::computeDependence(CXXPseudoDestructorExpr *E) {
+  auto D = E->getBase()->getDependence();
+  if (!E->getDestroyedType().isNull())
+    D |= toExprDependence(E->getDestroyedType()->getDependence());
+  if (auto *ST = E->getScopeTypeInfo())
+    D |= turnTypeToValueDependence(
+        toExprDependence(ST->getType()->getDependence()));
+  if (auto *Q = E->getQualifier())
+    D |= toExprDependence(Q->getDependence() &
+                          ~NestedNameSpecifierDependence::Dependent);
+  return D;
+}
+
+static inline ExprDependence getDependenceInExpr(DeclarationNameInfo Name) {
+  auto D = ExprDependence::None;
+  if (Name.isInstantiationDependent())
+    D |= ExprDependence::Instantiation;
+  if (Name.containsUnexpandedParameterPack())
+    D |= ExprDependence::UnexpandedPack;
+  return D;
+}
+
+ExprDependence
+clang::computeDependence(OverloadExpr *E, bool KnownDependent,
+                         bool KnownInstantiationDependent,
+                         bool KnownContainsUnexpandedParameterPack) {
+  auto Deps = ExprDependence::None;
+  if (KnownDependent)
+    Deps |= ExprDependence::TypeValue;
+  if (KnownInstantiationDependent)
+    Deps |= ExprDependence::Instantiation;
+  if (KnownContainsUnexpandedParameterPack)
+    Deps |= ExprDependence::UnexpandedPack;
+  Deps |= getDependenceInExpr(E->getNameInfo());
+  if (auto *Q = E->getQualifier())
+    Deps |= toExprDependence(Q->getDependence() &
+                             ~NestedNameSpecifierDependence::Dependent);
+  for (auto *D : E->decls()) {
+    if (D->getDeclContext()->isDependentContext() ||
+        isa<UnresolvedUsingValueDecl>(D))
+      Deps |= ExprDependence::TypeValueInstantiation;
+  }
+  // If we have explicit template arguments, check for dependent
+  // template arguments and whether they contain any unexpanded pack
+  // expansions.
+  for (auto A : E->template_arguments())
+    Deps |= toExprDependence(A.getArgument().getDependence());
+  return Deps;
+}
+
+ExprDependence clang::computeDependence(DependentScopeDeclRefExpr *E) {
+  auto D = ExprDependence::TypeValue;
+  D |= getDependenceInExpr(E->getNameInfo());
+  if (auto *Q = E->getQualifier())
+    D |= toExprDependence(Q->getDependence());
+  for (auto A : E->template_arguments())
+    D |= toExprDependence(A.getArgument().getDependence());
+  return D;
+}
+
+ExprDependence clang::computeDependence(CXXConstructExpr *E) {
+  auto D = toExprDependence(E->getType()->getDependence());
+  for (auto *A : E->arguments())
+    D |= A->getDependence() & ~ExprDependence::Type;
+  return D;
+}
+
+ExprDependence clang::computeDependence(CXXDefaultInitExpr *E) {
+  return E->getExpr()->getDependence();
+}
+
+ExprDependence clang::computeDependence(CXXDefaultArgExpr *E) {
+  return E->getExpr()->getDependence();
+}
+
+ExprDependence clang::computeDependence(LambdaExpr *E,
+                                        bool ContainsUnexpandedParameterPack) {
+  auto D = toExprDependence(E->getType()->getDependence());
+  if (ContainsUnexpandedParameterPack)
+    D |= ExprDependence::UnexpandedPack;
+  return D;
+}
+
+ExprDependence clang::computeDependence(CXXUnresolvedConstructExpr *E) {
+  auto D = ExprDependence::ValueInstantiation;
+  D |= toExprDependence(E->getType()->getDependence());
+  for (auto *A : E->arguments())
+    D |= A->getDependence() &
+         (ExprDependence::UnexpandedPack | ExprDependence::Error);
+  return D;
+}
+
+ExprDependence clang::computeDependence(CXXDependentScopeMemberExpr *E) {
+  auto D = ExprDependence::TypeValueInstantiation;
+  if (!E->isImplicitAccess())
+    D |= E->getBase()->getDependence();
+  if (auto *Q = E->getQualifier())
+    D |= toExprDependence(Q->getDependence());
+  D |= getDependenceInExpr(E->getMemberNameInfo());
+  for (auto A : E->template_arguments())
+    D |= toExprDependence(A.getArgument().getDependence());
+  return D;
+}
+
+ExprDependence clang::computeDependence(MaterializeTemporaryExpr *E) {
+  return E->getSubExpr()->getDependence();
+}
+
+ExprDependence clang::computeDependence(CXXFoldExpr *E) {
+  auto D = ExprDependence::TypeValueInstantiation;
+  for (const auto *C : {E->getLHS(), E->getRHS()}) {
+    if (C)
+      D |= C->getDependence() & ~ExprDependence::UnexpandedPack;
+  }
+  return D;
+}
+
+ExprDependence clang::computeDependence(TypeTraitExpr *E) {
+  auto D = ExprDependence::None;
+  for (const auto *A : E->getArgs())
+    D |=
+        toExprDependence(A->getType()->getDependence()) & ~ExprDependence::Type;
+  return D;
+}
+
+ExprDependence clang::computeDependence(ConceptSpecializationExpr *E,
+                                        bool ValueDependent) {
+  auto TA = TemplateArgumentDependence::None;
+  const auto InterestingDeps = TemplateArgumentDependence::Instantiation |
+                               TemplateArgumentDependence::UnexpandedPack;
+  for (const TemplateArgumentLoc &ArgLoc :
+       E->getTemplateArgsAsWritten()->arguments()) {
+    TA |= ArgLoc.getArgument().getDependence() & InterestingDeps;
+    if (TA == InterestingDeps)
+      break;
+  }
+
+  ExprDependence D =
+      ValueDependent ? ExprDependence::Value : ExprDependence::None;
+  return D | toExprDependence(TA);
+}
+
+ExprDependence clang::computeDependence(ObjCArrayLiteral *E) {
+  auto D = ExprDependence::None;
+  Expr **Elements = E->getElements();
+  for (unsigned I = 0, N = E->getNumElements(); I != N; ++I)
+    D |= turnTypeToValueDependence(Elements[I]->getDependence());
+  return D;
+}
+
+ExprDependence clang::computeDependence(ObjCDictionaryLiteral *E) {
+  auto Deps = ExprDependence::None;
+  for (unsigned I = 0, N = E->getNumElements(); I < N; ++I) {
+    auto KV = E->getKeyValueElement(I);
+    auto KVDeps = turnTypeToValueDependence(KV.Key->getDependence() |
+                                            KV.Value->getDependence());
+    if (KV.EllipsisLoc.isValid())
+      KVDeps &= ~ExprDependence::UnexpandedPack;
+    Deps |= KVDeps;
+  }
+  return Deps;
+}
+
+ExprDependence clang::computeDependence(ObjCMessageExpr *E) {
+  auto D = ExprDependence::None;
+  if (auto *R = E->getInstanceReceiver())
+    D |= R->getDependence();
+  else
+    D |= toExprDependence(E->getType()->getDependence());
+  for (auto *A : E->arguments())
+    D |= A->getDependence();
+  return D;
+}