Remove some not-really-used variables, as warned

about by icc (#593, partial).  Patch by Erick Tryzelaar.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81115 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 2 insertions, 14 deletions

diff --git a/lib/CodeGen/RegAllocPBQP.cpp b/lib/CodeGen/RegAllocPBQP.cpp
index 12da38fa21..b62d4def7e 100644
--- a/lib/CodeGen/RegAllocPBQP.cpp
+++ b/lib/CodeGen/RegAllocPBQP.cpp
@@ -691,10 +691,6 @@ void PBQPRegAlloc::addStackInterval(const LiveInterval *spilled,
 }
 
 bool PBQPRegAlloc::mapPBQPToRegAlloc(const PBQP::Solution &solution) {
-
-  static unsigned round = 0;
-  (void) round;
-
   // Set to true if we have any spills
   bool anotherRoundNeeded = false;
 
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
index a580b93c83..6c6e96abac 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
@@ -243,10 +243,8 @@ void ScheduleDAGSDNodes::ComputeLatency(SUnit *SU) {
   // Compute the latency for the node.  We use the sum of the latencies for
   // all nodes flagged together into this SUnit.
   SU->Latency = 0;
-  bool SawMachineOpcode = false;
   for (SDNode *N = SU->getNode(); N; N = N->getFlaggedNode())
     if (N->isMachineOpcode()) {
-      SawMachineOpcode = true;
       SU->Latency += InstrItins.
         getStageLatency(TII->get(N->getMachineOpcode()).getSchedClass());
     }
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
index cd05f7124d..b0a6a6e17f 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
@@ -1714,11 +1714,9 @@ bool SelectionDAGLowering::handleJTSwitchCase(CaseRec& CR,
   MachineFunction *CurMF = FuncInfo.MF;
 
   // Figure out which block is immediately after the current one.
-  MachineBasicBlock *NextBlock = 0;
   MachineFunction::iterator BBI = CR.CaseBB;
 
-  if (++BBI != FuncInfo.MF->end())
-    NextBlock = BBI;
+  if (++BBI != FuncInfo.MF->end()) {}
 
   const BasicBlock *LLVMBB = CR.CaseBB->getBasicBlock();
 
@@ -1787,11 +1785,9 @@ bool SelectionDAGLowering::handleBTSplitSwitchCase(CaseRec& CR,
   MachineFunction *CurMF = FuncInfo.MF;
 
   // Figure out which block is immediately after the current one.
-  MachineBasicBlock *NextBlock = 0;
   MachineFunction::iterator BBI = CR.CaseBB;
 
-  if (++BBI != FuncInfo.MF->end())
-    NextBlock = BBI;
+  if (++BBI != FuncInfo.MF->end()) {}
 
   Case& FrontCase = *CR.Range.first;
   Case& BackCase  = *(CR.Range.second-1);
diff --git a/lib/CodeGen/StackSlotColoring.cpp b/lib/CodeGen/StackSlotColoring.cpp
index 5884b8213b..e62c0506b3 100644
--- a/lib/CodeGen/StackSlotColoring.cpp
+++ b/lib/CodeGen/StackSlotColoring.cpp
@@ -558,7 +558,6 @@ bool StackSlotColoring::PropagateForward(MachineBasicBlock::iterator MII,
 
   SmallVector<MachineOperand*, 4> Uses;
   while (++MII != MBB->end()) {
-    bool FoundUse = false;
     bool FoundKill = false;
     const TargetInstrDesc &TID = MII->getDesc();
     for (unsigned i = 0, e = MII->getNumOperands(); i != e; ++i) {
@@ -581,7 +580,6 @@ bool StackSlotColoring::PropagateForward(MachineBasicBlock::iterator MII,
         const TargetRegisterClass *RC = TID.OpInfo[i].getRegClass(TRI);
         if (RC && !RC->contains(NewReg))
           return false;
-        FoundUse = true;
         if (MO.isKill())
           FoundKill = true;