Subzero. Fixes memory leaks.

src/IceTargetLowering.cpp

 //===- subzero/src/IceTargetLowering.cpp - Basic lowering implementation --===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements the skeleton of the TargetLowering class,
@@ skipping 496 matching lines @@
   if (Align > 1) {
     assert(llvm::isPowerOf2_32(Align));
     // Use the .p2align directive, since the .align N directive can either
     // interpret N as bytes, or power of 2 bytes, depending on the target.
     Str << "\t.p2align\t" << llvm::Log2_32(Align) << "\n";
   }
 
   Str << MangledName << ":\n";
 
   if (HasNonzeroInitializer) {
-    for (VariableDeclaration::Initializer *Init : Var.getInitializers()) {
+    for (const std::unique_ptr<VariableDeclaration::Initializer> &Init :
+         Var.getInitializers()) {
       switch (Init->getKind()) {
       case VariableDeclaration::Initializer::DataInitializerKind: {
         const auto &Data = llvm::cast<VariableDeclaration::DataInitializer>(
-                               Init)->getContents();
+                               Init.get())->getContents();
         for (SizeT i = 0; i < Init->getNumBytes(); ++i) {
           Str << "\t.byte\t" << (((unsigned)Data[i]) & 0xff) << "\n";
         }
         break;
       }
       case VariableDeclaration::Initializer::ZeroInitializerKind:
         Str << "\t.zero\t" << Init->getNumBytes() << "\n";
         break;
       case VariableDeclaration::Initializer::RelocInitializerKind: {
         const auto *Reloc =
-            llvm::cast<VariableDeclaration::RelocInitializer>(Init);
+            llvm::cast<VariableDeclaration::RelocInitializer>(Init.get());
         Str << "\t" << getEmit32Directive() << "\t";
         Str << Reloc->getDeclaration()->mangleName(Ctx);
         if (RelocOffsetT Offset = Reloc->getOffset()) {
           if (Offset >= 0 || (Offset == INT32_MIN))
             Str << " + " << Offset;
           else
             Str << " - " << -Offset;
         }
         Str << "\n";
         break;
@@ skipping 18 matching lines @@
   if (Target == Target_##X)                                                    \
     return TargetHeader##X::create(Ctx);
 #include "llvm/Config/SZTargets.def"
 
   llvm::report_fatal_error("Unsupported target header lowering");
 }
 
 TargetHeaderLowering::~TargetHeaderLowering() {}
 
 } // end of namespace Ice