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

src/IceCfgNode.cpp

 //===- subzero/src/IceCfgNode.cpp - Basic block (node) 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 CfgNode class, including the complexities
 // of instruction insertion and in-edge calculation.
 //
 //===----------------------------------------------------------------------===//
 
 #include "IceAssembler.h"
 #include "IceCfg.h"
 #include "IceCfgNode.h"
 #include "IceGlobalInits.h"
 #include "IceInst.h"
 #include "IceLiveness.h"
 #include "IceOperand.h"
 #include "IceTargetLowering.h"
 
 namespace Ice {
 
 CfgNode::CfgNode(Cfg *Func, SizeT LabelNumber)
-    : Func(Func), Number(LabelNumber), NameIndex(Cfg::IdentifierIndexInvalid),
-      HasReturn(false), NeedsPlacement(false), InstCountEstimate(0) {}
+    : Func(Func), Number(LabelNumber) {}
 
 // Returns the name the node was created with.  If no name was given,
 // it synthesizes a (hopefully) unique name.
 IceString CfgNode::getName() const {
   if (NameIndex >= 0)
     return Func->getIdentifierName(NameIndex);
   return "__" + std::to_string(getIndex());
 }
 
 // Adds an instruction to either the Phi list or the regular
@@ skipping 903 matching lines @@
 class BundleEmitHelper {
   BundleEmitHelper() = delete;
   BundleEmitHelper(const BundleEmitHelper &) = delete;
   BundleEmitHelper &operator=(const BundleEmitHelper &) = delete;
 
 public:
   BundleEmitHelper(Assembler *Asm, TargetLowering *Target,
                    const InstList &Insts)
       : Asm(Asm), Target(Target), End(Insts.end()), BundleLockStart(End),
         BundleSize(1 << Asm->getBundleAlignLog2Bytes()),
-        BundleMaskLo(BundleSize - 1), BundleMaskHi(~BundleMaskLo),
-        SizeSnapshotPre(0), SizeSnapshotPost(0) {}
+        BundleMaskLo(BundleSize - 1), BundleMaskHi(~BundleMaskLo) {}
   // Check whether we're currently within a bundle_lock region.
   bool isInBundleLockRegion() const { return BundleLockStart != End; }
   // Check whether the current bundle_lock region has the align_to_end
   // option.
   bool isAlignToEnd() const {
     assert(isInBundleLockRegion());
     return llvm::cast<InstBundleLock>(getBundleLockStart())->getOption() ==
            InstBundleLock::Opt_AlignToEnd;
   }
   // Check whether the entire bundle_lock region falls within the same
@@ skipping 79 matching lines @@
   TargetLowering *const Target;
   // End is a sentinel value such that BundleLockStart==End implies
   // that we are not in a bundle_lock region.
   const InstList::const_iterator End;
   InstList::const_iterator BundleLockStart;
   const intptr_t BundleSize;
   // Masking with BundleMaskLo identifies an address's bundle offset.
   const intptr_t BundleMaskLo;
   // Masking with BundleMaskHi identifies an address's bundle.
   const intptr_t BundleMaskHi;
-  intptr_t SizeSnapshotPre;
-  intptr_t SizeSnapshotPost;
+  intptr_t SizeSnapshotPre = 0;
+  intptr_t SizeSnapshotPost = 0;
 };
 
 } // end of anonymous namespace
 
 void CfgNode::emitIAS(Cfg *Func) const {
   Func->setCurrentNode(this);
   Assembler *Asm = Func->getAssembler<>();
   // TODO(stichnot): When sandboxing, defer binding the node label
   // until just before the first instruction is emitted, to reduce the
   // chance that a padding nop is a branch target.
@@ skipping 203 matching lines @@
   InstIntrinsicCall *Inst = InstIntrinsicCall::create(
       Func, 5, Func->makeVariable(IceType_i64), RMWI64Name, Info->Info);
   Inst->addArg(AtomicRMWOp);
   Inst->addArg(Counter);
   Inst->addArg(One);
   Inst->addArg(OrderAcquireRelease);
   Insts.push_front(Inst);
 }
 
 } // end of namespace Ice