Subzero: Use C++11 member initializers where practical.

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 59 matching lines @@
 #define SUBZERO_TARGET(X)                                                      \
   if (Target == Target_##X)                                                    \
     return Target##X::create(Func);
 #include "llvm/Config/SZTargets.def"
 
   Func->setError("Unsupported target");
   return nullptr;
 }
 
 TargetLowering::TargetLowering(Cfg *Func)
-    : Func(Func), Ctx(Func->getContext()), HasComputedFrame(false),
-      CallsReturnsTwice(false), StackAdjustment(0), NextLabelNumber(0),
-      Context(), SnapshotStackAdjustment(0) {}
+    : Func(Func), Ctx(Func->getContext()), Context() {}
 
 std::unique_ptr<Assembler> TargetLowering::createAssembler(TargetArch Target,
                                                            Cfg *Func) {
 #define SUBZERO_TARGET(X)                                                      \
   if (Target == Target_##X)                                                    \
     return std::unique_ptr<Assembler>(new X::Assembler##X());
 #include "llvm/Config/SZTargets.def"
 
   Func->setError("Unsupported target assembler");
   return nullptr;
@@ skipping 345 matching lines @@
 TargetDataLowering::createLowering(GlobalContext *Ctx) {
   TargetArch Target = Ctx->getFlags().getTargetArch();
 #define SUBZERO_TARGET(X)                                                      \
   if (Target == Target_##X)                                                    \
     return TargetData##X::create(Ctx);
 #include "llvm/Config/SZTargets.def"
 
   llvm::report_fatal_error("Unsupported target data lowering");
 }
 
-TargetDataLowering::~TargetDataLowering() {}
+TargetDataLowering::~TargetDataLowering() = default;
 
 namespace {
 
 // dataSectionSuffix decides whether to use SectionSuffix or MangledVarName as
 // data section suffix. Essentially, when using separate data sections for
 // globals SectionSuffix is not necessary.
 IceString dataSectionSuffix(const IceString &SectionSuffix,
                             const IceString &MangledVarName,
                             const bool DataSections) {
   if (SectionSuffix.empty() && !DataSections) {
@@ skipping 100 matching lines @@
 TargetHeaderLowering::createLowering(GlobalContext *Ctx) {
   TargetArch Target = Ctx->getFlags().getTargetArch();
 #define SUBZERO_TARGET(X)                                                      \
   if (Target == Target_##X)                                                    \
     return TargetHeader##X::create(Ctx);
 #include "llvm/Config/SZTargets.def"
 
   llvm::report_fatal_error("Unsupported target header lowering");
 }
 
-TargetHeaderLowering::~TargetHeaderLowering() {}
+TargetHeaderLowering::~TargetHeaderLowering() = default;
 
 } // end of namespace Ice