Silence GCC warnings.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147664 91177308-0d34-0410-b5e6-96231b3b80d8

lib/AST/Expr.cpp

@@ -490,8 +490,8 @@ double FloatingLiteral::getValueAsApproximateDouble() const {
   return V.convertToDouble();
 }
 
-int StringLiteral::mapCharByteWidth(TargetInfo const &target,StringKind k) {
-  int CharByteWidth;
+int StringLiteral::mapCharByteWidth(TargetInfo const &target, StringKind k) {
+  int CharByteWidth = 0;
   switch(k) {
     case Ascii:
     case UTF8:

lib/CodeGen/CGExprAgg.cpp

@@ -469,7 +469,7 @@ VisitAbstractConditionalOperator(const AbstractConditionalOperator *E) {
   llvm::BasicBlock *ContBlock = CGF.createBasicBlock("cond.end");
 
   // Bind the common expression if necessary.
-  CodeGenFunction::OpaqueValueMapping binding(CGF, E);
+  CodeGenFunction::OpaqueValueMapping(CGF, E);
 
   CodeGenFunction::ConditionalEvaluation eval(CGF);
   CGF.EmitBranchOnBoolExpr(E->getCond(), LHSBlock, RHSBlock);

lib/CodeGen/CGExprComplex.cpp

@@ -680,7 +680,7 @@ VisitAbstractConditionalOperator(const AbstractConditionalOperator *E) {
   llvm::BasicBlock *ContBlock = CGF.createBasicBlock("cond.end");
 
   // Bind the common expression if necessary.
-  CodeGenFunction::OpaqueValueMapping binding(CGF, E);
+  CodeGenFunction::OpaqueValueMapping(CGF, E);
 
   CodeGenFunction::ConditionalEvaluation eval(CGF);
   CGF.EmitBranchOnBoolExpr(E->getCond(), LHSBlock, RHSBlock);

lib/CodeGen/CGExprScalar.cpp

@@ -2483,7 +2483,7 @@ VisitAbstractConditionalOperator(const AbstractConditionalOperator *E) {
   TestAndClearIgnoreResultAssign();
 
   // Bind the common expression if necessary.
-  CodeGenFunction::OpaqueValueMapping binding(CGF, E);
+  CodeGenFunction::OpaqueValueMapping(CGF, E);
 
   Expr *condExpr = E->getCond();
   Expr *lhsExpr = E->getTrueExpr();

lib/Driver/Tools.cpp

@@ -737,7 +737,7 @@ void Clang::AddMIPSTargetArgs(const ArgList &Args,
   const Driver &D = getToolChain().getDriver();
 
   StringRef ArchName;
-  const char *CPUName;
+  const char *CPUName = 0;
 
   // Set target cpu and architecture.
   if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {

lib/Serialization/ASTReaderDecl.cpp

@@ -1226,7 +1226,7 @@ void ASTDeclReader::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) {
   RedeclKind Kind = (RedeclKind)Record[Idx++];
   
   // Determine the first declaration ID.
-  DeclID FirstDeclID;
+  DeclID FirstDeclID = 0;
   switch (Kind) {
   case FirstDeclaration: {
     FirstDeclID = ThisDeclID;
@@ -1481,7 +1481,7 @@ ASTDeclReader::VisitRedeclarable(Redeclarable<T> *D) {
   enum RedeclKind { FirstDeclaration = 0, FirstInFile, PointsToPrevious };
   RedeclKind Kind = (RedeclKind)Record[Idx++];
   
-  DeclID FirstDeclID;
+  DeclID FirstDeclID = 0;
   switch (Kind) {
   case FirstDeclaration:
     FirstDeclID = ThisDeclID;