Subzero: Refactor x86 register definitions to use the alias mechanism.

src/IceRegAlloc.cpp

 //===- subzero/src/IceRegAlloc.cpp - Linear-scan implementation -----------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 105 matching lines @@
 
   // Build the (ordered) list of FakeKill instruction numbers.
   Kills.clear();
   // Phi lowering should not be creating new call instructions, so there should
   // be no infinite-weight not-yet-colored live ranges that span a call
   // instruction, hence no need to construct the Kills list.
   if (Kind == RAK_Phi)
     return;
   for (CfgNode *Node : Func->getNodes()) {
     for (Inst &I : Node->getInsts()) {
-      if (auto Kill = llvm::dyn_cast<InstFakeKill>(&I)) {
+      if (auto *Kill = llvm::dyn_cast<InstFakeKill>(&I)) {
         if (!Kill->isDeleted() && !Kill->getLinked()->isDeleted())
           Kills.push_back(I.getNumber());
       }
     }
   }
 }
 
 // Validate the integrity of the live ranges.  If there are any errors, it
 // prints details and returns false.  On success, it returns true.
 bool LinearScan::livenessValidateIntervals(
@@ skipping 847 matching lines @@
     Str << "\n";
   }
   Str << "++++++ Inactive:\n";
   for (const Variable *Item : Inactive) {
     dumpLiveRange(Item, Func);
     Str << "\n";
   }
 }
 
 } // end of namespace Ice