1 files changed, 0 insertions, 161 deletions
diff --git a/clang/lib/ARCMigrate/TransEmptyStatements.cpp b/clang/lib/ARCMigrate/TransEmptyStatements.cpp
deleted file mode 100644
index 1b62bbf0354..00000000000
--- a/clang/lib/ARCMigrate/TransEmptyStatements.cpp
+++ /dev/null
@@ -1,161 +0,0 @@
-//===--- TransEmptyStatements.cpp - Tranformations to ARC mode ------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// removeEmptyStatements:
-//
-// Removes empty statements that are leftovers from previous transformations.
-// e.g for
-//
-//  [x retain];
-//
-// removeRetainReleaseDealloc will leave an empty ";" that removeEmptyStatements
-// will remove.
-//
-//===----------------------------------------------------------------------===//
-
-#include "Transforms.h"
-#include "Internals.h"
-#include "clang/AST/StmtVisitor.h"
-
-using namespace clang;
-using namespace arcmt;
-using namespace trans;
-using llvm::StringRef;
-
-namespace {
-
-class EmptyStatementsRemover :
-                            public RecursiveASTVisitor<EmptyStatementsRemover> {
-  MigrationPass &Pass;
-  llvm::DenseSet<unsigned> MacroLocs;
-
-public:
-  EmptyStatementsRemover(MigrationPass &pass) : Pass(pass) {
-    for (unsigned i = 0, e = Pass.ARCMTMacroLocs.size(); i != e; ++i)
-      MacroLocs.insert(Pass.ARCMTMacroLocs[i].getRawEncoding());
-  }
-
-  bool TraverseStmtExpr(StmtExpr *E) {
-    CompoundStmt *S = E->getSubStmt();
-    for (CompoundStmt::body_iterator
-           I = S->body_begin(), E = S->body_end(); I != E; ++I) {
-      if (I != E - 1)
-        check(*I);
-      TraverseStmt(*I);
-    }
-    return true;
-  }
-
-  bool VisitCompoundStmt(CompoundStmt *S) {
-    for (CompoundStmt::body_iterator
-           I = S->body_begin(), E = S->body_end(); I != E; ++I)
-      check(*I);
-    return true;
-  }
-
-  bool isMacroLoc(SourceLocation loc) {
-    if (loc.isInvalid()) return false;
-    return MacroLocs.count(loc.getRawEncoding());
-  }
-
-  ASTContext &getContext() { return Pass.Ctx; }
-
-private:
-  /// \brief Returns true if the statement became empty due to previous
-  /// transformations.
-  class EmptyChecker : public StmtVisitor<EmptyChecker, bool> {
-    EmptyStatementsRemover &Trans;
-
-  public:
-    EmptyChecker(EmptyStatementsRemover &trans) : Trans(trans) { }
-
-    bool VisitNullStmt(NullStmt *S) {
-      return Trans.isMacroLoc(S->getLeadingEmptyMacroLoc());
-    }
-    bool VisitCompoundStmt(CompoundStmt *S) {
-      if (S->body_empty())
-        return false; // was already empty, not because of transformations.
-      for (CompoundStmt::body_iterator
-             I = S->body_begin(), E = S->body_end(); I != E; ++I)
-        if (!Visit(*I))
-          return false;
-      return true;
-    }
-    bool VisitIfStmt(IfStmt *S) {
-      if (S->getConditionVariable())
-        return false;
-      Expr *condE = S->getCond();
-      if (!condE)
-        return false;
-      if (hasSideEffects(condE, Trans.getContext()))
-        return false;
-      if (!S->getThen() || !Visit(S->getThen()))
-        return false;
-      if (S->getElse() && !Visit(S->getElse()))
-        return false;
-      return true;
-    }
-    bool VisitWhileStmt(WhileStmt *S) {
-      if (S->getConditionVariable())
-        return false;
-      Expr *condE = S->getCond();
-      if (!condE)
-        return false;
-      if (hasSideEffects(condE, Trans.getContext()))
-        return false;
-      if (!S->getBody())
-        return false;
-      return Visit(S->getBody());
-    }
-    bool VisitDoStmt(DoStmt *S) {
-      Expr *condE = S->getCond();
-      if (!condE)
-        return false;
-      if (hasSideEffects(condE, Trans.getContext()))
-        return false;
-      if (!S->getBody())
-        return false;
-      return Visit(S->getBody());
-    }
-    bool VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
-      Expr *Exp = S->getCollection();
-      if (!Exp)
-        return false;
-      if (hasSideEffects(Exp, Trans.getContext()))
-        return false;
-      if (!S->getBody())
-        return false;
-      return Visit(S->getBody());
-    }
-    bool VisitObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S) {
-      if (!S->getSubStmt())
-        return false;
-      return Visit(S->getSubStmt());
-    }
-  };
-
-  void check(Stmt *S) {
-    if (!S) return;
-    if (EmptyChecker(*this).Visit(S)) {
-      Transaction Trans(Pass.TA);
-      Pass.TA.removeStmt(S);
-    }
-  }
-};
-
-} // anonymous namespace
-
-void trans::removeEmptyStatements(MigrationPass &pass) {
-  EmptyStatementsRemover(pass).TraverseDecl(pass.Ctx.getTranslationUnitDecl());
-
-  for (unsigned i = 0, e = pass.ARCMTMacroLocs.size(); i != e; ++i) {
-    Transaction Trans(pass.TA);
-    pass.TA.remove(pass.ARCMTMacroLocs[i]);
-  }
-}