Subzero: Don't bother printing stack/frame ptr as part of LiveIn/LiveOut.

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.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 865 matching lines @@
 namespace {
 
 // Helper functions for emit().
 
 void emitRegisterUsage(Ostream &Str, const Cfg *Func, const CfgNode *Node,
                        bool IsLiveIn, CfgVector<SizeT> &LiveRegCount) {
   if (!BuildDefs::dump())
     return;
   Liveness *Liveness = Func->getLiveness();
   const LivenessBV *Live;
+  const int32_t StackReg = Func->getTarget()->getStackReg();
+  const int32_t FrameOrStackReg = Func->getTarget()->getFrameOrStackReg();
   if (IsLiveIn) {
     Live = &Liveness->getLiveIn(Node);
     Str << "\t\t\t\t# LiveIn=";
   } else {
     Live = &Liveness->getLiveOut(Node);
     Str << "\t\t\t\t# LiveOut=";
   }
   if (!Live->empty()) {
     CfgVector<Variable *> LiveRegs;
     for (SizeT i = 0; i < Live->size(); ++i) {
-      if ((*Live)[i]) {
-        Variable *Var = Liveness->getVariable(i, Node);
-        if (Var->hasReg()) {
-          if (IsLiveIn)
-            ++LiveRegCount[Var->getRegNum()];
-          LiveRegs.push_back(Var);
-        }
-      }
+      if (!(*Live)[i])
+        continue;
+      Variable *Var = Liveness->getVariable(i, Node);
+      if (!Var->hasReg())
+        continue;
+      const int32_t RegNum = Var->getRegNum();
+      if (RegNum == StackReg || RegNum == FrameOrStackReg)
+        continue;
+      if (IsLiveIn)
+        ++LiveRegCount[RegNum];
+      LiveRegs.push_back(Var);
     }
     // Sort the variables by regnum so they are always printed in a familiar
     // order.
     std::sort(LiveRegs.begin(), LiveRegs.end(),
               [](const Variable *V1, const Variable *V2) {
                 return V1->getRegNum() < V2->getRegNum();
               });
     bool First = true;
     for (Variable *Var : LiveRegs) {
       if (!First)
@@ skipping 454 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