Revert "clang support gnu asm goto."

This reverts commit 954ec09aed4f2be04bb5f4e10dbb4ea8bd19ef9a.

Reverting due to test failures as requested by Jennifer Yu.

Conflicts:
	clang/test/CodeGen/asm-goto.c

llvm-svn: 362106
diff --git a/clang/lib/AST/ASTImporter.cpp b/clang/lib/AST/ASTImporter.cpp
index 1f1ec1d..2e4c304 100644
--- a/clang/lib/AST/ASTImporter.cpp
+++ b/clang/lib/AST/ASTImporter.cpp
@@ -5592,17 +5592,12 @@
       return InputOrErr.takeError();
   }
 
-  SmallVector<Expr *, 4> Exprs(S->getNumOutputs() + S->getNumInputs() +
-                               S->getNumLabels());
+  SmallVector<Expr *, 4> Exprs(S->getNumOutputs() + S->getNumInputs());
   if (Error Err = ImportContainerChecked(S->outputs(), Exprs))
     return std::move(Err);
 
-  if (Error Err =
-          ImportArrayChecked(S->inputs(), Exprs.begin() + S->getNumOutputs()))
-    return std::move(Err);
-
   if (Error Err = ImportArrayChecked(
-          S->labels(), Exprs.begin() + S->getNumOutputs() + S->getNumInputs()))
+      S->inputs(), Exprs.begin() + S->getNumOutputs()))
     return std::move(Err);
 
   ExpectedSLoc AsmLocOrErr = import(S->getAsmLoc());
@@ -5628,7 +5623,6 @@
       *AsmStrOrErr,
       S->getNumClobbers(),
       Clobbers.data(),
-      S->getNumLabels(),
       *RParenLocOrErr);
 }
 
diff --git a/clang/lib/AST/Stmt.cpp b/clang/lib/AST/Stmt.cpp
index 0a4d403..68a5a2d 100644
--- a/clang/lib/AST/Stmt.cpp
+++ b/clang/lib/AST/Stmt.cpp
@@ -444,14 +444,6 @@
   Exprs[i + NumOutputs] = E;
 }
 
-AddrLabelExpr *GCCAsmStmt::getLabelExpr(unsigned i) const {
-  return cast<AddrLabelExpr>(Exprs[i + NumInputs]);
-}
-
-StringRef GCCAsmStmt::getLabelName(unsigned i) const {
-  return getLabelExpr(i)->getLabel()->getName();
-}
-
 /// getInputConstraint - Return the specified input constraint.  Unlike output
 /// constraints, these can be empty.
 StringRef GCCAsmStmt::getInputConstraint(unsigned i) const {
@@ -464,16 +456,13 @@
                                                 Stmt **Exprs,
                                                 unsigned NumOutputs,
                                                 unsigned NumInputs,
-                                                unsigned NumLabels,
                                                 StringLiteral **Clobbers,
                                                 unsigned NumClobbers) {
   this->NumOutputs = NumOutputs;
   this->NumInputs = NumInputs;
   this->NumClobbers = NumClobbers;
-  this->NumLabels = NumLabels;
-  assert(!(NumOutputs && NumLabels) && "asm goto cannot have outputs");
 
-  unsigned NumExprs = NumOutputs + NumInputs + NumLabels;
+  unsigned NumExprs = NumOutputs + NumInputs;
 
   C.Deallocate(this->Names);
   this->Names = new (C) IdentifierInfo*[NumExprs];
@@ -509,10 +498,6 @@
     if (getInputName(i) == SymbolicName)
       return getNumOutputs() + NumPlusOperands + i;
 
-  for (unsigned i = 0, e = getNumLabels(); i != e; ++i)
-    if (getLabelName(i) == SymbolicName)
-      return i + getNumInputs();
-
   // Not found.
   return -1;
 }
@@ -630,8 +615,8 @@
       while (CurPtr != StrEnd && isDigit(*CurPtr))
         N = N*10 + ((*CurPtr++)-'0');
 
-      unsigned NumOperands = getNumOutputs() + getNumPlusOperands() +
-                             getNumInputs() + getNumLabels();
+      unsigned NumOperands =
+        getNumOutputs() + getNumPlusOperands() + getNumInputs();
       if (N >= NumOperands) {
         DiagOffs = CurPtr-StrStart-1;
         return diag::err_asm_invalid_operand_number;
@@ -744,12 +729,10 @@
                        unsigned numinputs, IdentifierInfo **names,
                        StringLiteral **constraints, Expr **exprs,
                        StringLiteral *asmstr, unsigned numclobbers,
-                       StringLiteral **clobbers, unsigned numlabels,
-                       SourceLocation rparenloc)
+                       StringLiteral **clobbers, SourceLocation rparenloc)
     : AsmStmt(GCCAsmStmtClass, asmloc, issimple, isvolatile, numoutputs,
-              numinputs, numclobbers),
-              RParenLoc(rparenloc), AsmStr(asmstr), NumLabels(numlabels) {
-  unsigned NumExprs = NumOutputs + NumInputs + NumLabels;
+              numinputs, numclobbers), RParenLoc(rparenloc), AsmStr(asmstr) {
+  unsigned NumExprs = NumOutputs + NumInputs;
 
   Names = new (C) IdentifierInfo*[NumExprs];
   std::copy(names, names + NumExprs, Names);
diff --git a/clang/lib/AST/StmtPrinter.cpp b/clang/lib/AST/StmtPrinter.cpp
index 563095f..7fe0be5 100644
--- a/clang/lib/AST/StmtPrinter.cpp
+++ b/clang/lib/AST/StmtPrinter.cpp
@@ -414,15 +414,12 @@
   if (Node->isVolatile())
     OS << "volatile ";
 
-  if (Node->isAsmGoto())
-    OS << "goto ";
-
   OS << "(";
   VisitStringLiteral(Node->getAsmString());
 
   // Outputs
   if (Node->getNumOutputs() != 0 || Node->getNumInputs() != 0 ||
-      Node->getNumClobbers() != 0 || Node->getNumLabels() != 0)
+      Node->getNumClobbers() != 0)
     OS << " : ";
 
   for (unsigned i = 0, e = Node->getNumOutputs(); i != e; ++i) {
@@ -442,8 +439,7 @@
   }
 
   // Inputs
-  if (Node->getNumInputs() != 0 || Node->getNumClobbers() != 0 ||
-      Node->getNumLabels() != 0)
+  if (Node->getNumInputs() != 0 || Node->getNumClobbers() != 0)
     OS << " : ";
 
   for (unsigned i = 0, e = Node->getNumInputs(); i != e; ++i) {
@@ -463,7 +459,7 @@
   }
 
   // Clobbers
-  if (Node->getNumClobbers() != 0 || Node->getNumLabels())
+  if (Node->getNumClobbers() != 0)
     OS << " : ";
 
   for (unsigned i = 0, e = Node->getNumClobbers(); i != e; ++i) {
@@ -473,16 +469,6 @@
     VisitStringLiteral(Node->getClobberStringLiteral(i));
   }
 
-  // Labels
-  if (Node->getNumLabels() != 0)
-    OS << " : ";
-
-  for (unsigned i = 0, e = Node->getNumLabels(); i != e; ++i) {
-    if (i != 0)
-      OS << ", ";
-    OS << Node->getLabelName(i);
-  }
-
   OS << ");";
   if (Policy.IncludeNewlines) OS << NL;
 }
diff --git a/clang/lib/AST/StmtProfile.cpp b/clang/lib/AST/StmtProfile.cpp
index c5da5bf..93bdcac 100644
--- a/clang/lib/AST/StmtProfile.cpp
+++ b/clang/lib/AST/StmtProfile.cpp
@@ -321,9 +321,6 @@
   ID.AddInteger(S->getNumClobbers());
   for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
     VisitStringLiteral(S->getClobberStringLiteral(I));
-  ID.AddInteger(S->getNumLabels());
-  for (auto *L : S->labels())
-    VisitDecl(L->getLabel());
 }
 
 void StmtProfiler::VisitMSAsmStmt(const MSAsmStmt *S) {