Revert "[Clang Interpreter] Initial patch for the constexpr interpreter"

Breaks BUILD_SHARED_LIBS build, introduces cycles in library dependency
graphs. (clangInterp depends on clangAST which depends on clangInterp)

This reverts r370839, which is an yet another recommit of D64146.

llvm-svn: 370874

1 files changed, 0 insertions, 130 deletions

diff --git a/clang/lib/AST/Interp/State.h b/clang/lib/AST/Interp/State.h
deleted file mode 100644
index addcadff485..00000000000
--- a/clang/lib/AST/Interp/State.h
+++ /dev/null
@@ -1,130 +0,0 @@
-//===--- State.h - State chain for the VM and AST Walker --------*- C++ -*-===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-//
-// Defines the base class of the interpreter and evaluator state.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_AST_INTERP_STATE_H
-#define LLVM_CLANG_AST_INTERP_STATE_H
-
-#include "clang/AST/ASTDiagnostic.h"
-#include "clang/AST/Expr.h"
-#include "clang/AST/OptionalDiagnostic.h"
-
-namespace clang {
-
-/// Kinds of access we can perform on an object, for diagnostics. Note that
-/// we consider a member function call to be a kind of access, even though
-/// it is not formally an access of the object, because it has (largely) the
-/// same set of semantic restrictions.
-enum AccessKinds {
-  AK_Read,
-  AK_Assign,
-  AK_Increment,
-  AK_Decrement,
-  AK_MemberCall,
-  AK_DynamicCast,
-  AK_TypeId,
-};
-
-// The order of this enum is important for diagnostics.
-enum CheckSubobjectKind {
-  CSK_Base,
-  CSK_Derived,
-  CSK_Field,
-  CSK_ArrayToPointer,
-  CSK_ArrayIndex,
-  CSK_Real,
-  CSK_Imag
-};
-
-namespace interp {
-class Frame;
-class SourceInfo;
-
-/// Interface for the VM to interact with the AST walker's context.
-class State {
-public:
-  virtual ~State();
-
-  virtual bool checkingForOverflow() const = 0;
-  virtual bool checkingPotentialConstantExpression() const = 0;
-  virtual bool noteUndefinedBehavior() = 0;
-  virtual bool keepEvaluatingAfterFailure() const = 0;
-  virtual Frame *getCurrentFrame() = 0;
-  virtual const Frame *getBottomFrame() const = 0;
-  virtual bool hasActiveDiagnostic() = 0;
-  virtual void setActiveDiagnostic(bool Flag) = 0;
-  virtual void setFoldFailureDiagnostic(bool Flag) = 0;
-  virtual Expr::EvalStatus &getEvalStatus() const = 0;
-  virtual ASTContext &getCtx() const = 0;
-  virtual bool hasPriorDiagnostic() = 0;
-  virtual unsigned getCallStackDepth() = 0;
-
-public:
-  // Diagnose that the evaluation could not be folded (FF => FoldFailure)
-  OptionalDiagnostic
-  FFDiag(SourceLocation Loc,
-         diag::kind DiagId = diag::note_invalid_subexpr_in_const_expr,
-         unsigned ExtraNotes = 0);
-
-  OptionalDiagnostic
-  FFDiag(const Expr *E,
-         diag::kind DiagId = diag::note_invalid_subexpr_in_const_expr,
-         unsigned ExtraNotes = 0);
-
-  OptionalDiagnostic
-  FFDiag(const SourceInfo &SI,
-         diag::kind DiagId = diag::note_invalid_subexpr_in_const_expr,
-         unsigned ExtraNotes = 0);
-
-  /// Diagnose that the evaluation does not produce a C++11 core constant
-  /// expression.
-  ///
-  /// FIXME: Stop evaluating if we're in EM_ConstantExpression or
-  /// EM_PotentialConstantExpression mode and we produce one of these.
-  OptionalDiagnostic
-  CCEDiag(SourceLocation Loc,
-          diag::kind DiagId = diag::note_invalid_subexpr_in_const_expr,
-          unsigned ExtraNotes = 0);
-
-  OptionalDiagnostic
-  CCEDiag(const Expr *E,
-          diag::kind DiagId = diag::note_invalid_subexpr_in_const_expr,
-          unsigned ExtraNotes = 0);
-
-  OptionalDiagnostic
-  CCEDiag(const SourceInfo &SI,
-          diag::kind DiagId = diag::note_invalid_subexpr_in_const_expr,
-          unsigned ExtraNotes = 0);
-
-  /// Add a note to a prior diagnostic.
-  OptionalDiagnostic Note(SourceLocation Loc, diag::kind DiagId);
-
-  /// Add a stack of notes to a prior diagnostic.
-  void addNotes(ArrayRef<PartialDiagnosticAt> Diags);
-
-  /// Directly reports a diagnostic message.
-  DiagnosticBuilder report(SourceLocation Loc, diag::kind DiagId);
-
-  const LangOptions &getLangOpts() const;
-
-private:
-  void addCallStack(unsigned Limit);
-
-  PartialDiagnostic &addDiag(SourceLocation Loc, diag::kind DiagId);
-
-  OptionalDiagnostic diag(SourceLocation Loc, diag::kind DiagId,
-                          unsigned ExtraNotes, bool IsCCEDiag);
-};
-
-} // namespace interp
-} // namespace clang
-
-#endif