Iasm and obj lowering for advanced switch lowering.

src/IceSwitchLowering.cpp

 //===- subzero/src/IceSwitchLowering.cpp - Switch lowering -----------------==//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
 /// This file implements platform independent analysis of switch cases to
 /// improve the generated code.
 ///
 //===----------------------------------------------------------------------===//
 #include "IceSwitchLowering.h"
 
+#include "IceCfgNode.h"
 #include "IceTargetLowering.h"
 
 #include <algorithm>
 
 namespace Ice {
 
 CaseClusterArray CaseCluster::clusterizeSwitch(Cfg *Func,
                                                const InstSwitch *Inst) {
   CaseClusterArray CaseClusters;
 
@@ skipping 45 matching lines @@
     return CaseClusters;
   ++TotalRange;
 
   // Replace everything with a jump table
   InstJumpTable *JumpTable =
       InstJumpTable::create(Func, TotalRange, Inst->getLabelDefault());
   for (const CaseCluster &Case : CaseClusters) {
     // Case.High could be UINT64_MAX which makes the loop awkward. Unwrap the
     // last iteration to avoid wrap around problems.
     for (uint64_t I = Case.Low; I < Case.High; ++I)
-      JumpTable->addTarget(I - MinValue, Case.Label);
-    JumpTable->addTarget(Case.High - MinValue, Case.Label);
+      JumpTable->addTarget(I - MinValue, Case.Target);
+    JumpTable->addTarget(Case.High - MinValue, Case.Target);
+    Case.Target->setNeedsAlignment();
   }
+  Func->addJumpTable(JumpTable);
 
   CaseClusters.clear();
   CaseClusters.emplace_back(MinValue, MaxValue, JumpTable);
 
   return CaseClusters;
 }
 
 bool CaseCluster::tryAppend(const CaseCluster &New) {
   // Can only append ranges with the same target and are adjacent
-  bool CanAppend = this->Label == New.Label && this->High + 1 == New.Low;
+  bool CanAppend = this->Target == New.Target && this->High + 1 == New.Low;
   if (CanAppend)
     this->High = New.High;
   return CanAppend;
 }
 
 } // end of namespace Ice