Whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161122 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelDAGToDAG.cpp b/lib/Target/X86/X86ISelDAGToDAG.cpp
index 7161854..0d35b88 100644
--- a/lib/Target/X86/X86ISelDAGToDAG.cpp
+++ b/lib/Target/X86/X86ISelDAGToDAG.cpp
@@ -60,7 +60,7 @@
     int Base_FrameIndex;
 
     unsigned Scale;
-    SDValue IndexReg; 
+    SDValue IndexReg;
     int32_t Disp;
     SDValue Segment;
     const GlobalValue *GV;
@@ -80,11 +80,11 @@
     bool hasSymbolicDisplacement() const {
       return GV != 0 || CP != 0 || ES != 0 || JT != -1 || BlockAddr != 0;
     }
-    
+
     bool hasBaseOrIndexReg() const {
       return IndexReg.getNode() != 0 || Base_Reg.getNode() != 0;
     }
-    
+
     /// isRIPRelative - Return true if this addressing mode is already RIP
     /// relative.
     bool isRIPRelative() const {
@@ -94,7 +94,7 @@
         return RegNode->getReg() == X86::RIP;
       return false;
     }
-    
+
     void setBaseReg(SDValue Reg) {
       BaseType = RegBase;
       Base_Reg = Reg;
@@ -104,7 +104,7 @@
       dbgs() << "X86ISelAddressMode " << this << '\n';
       dbgs() << "Base_Reg ";
       if (Base_Reg.getNode() != 0)
-        Base_Reg.getNode()->dump(); 
+        Base_Reg.getNode()->dump();
       else
         dbgs() << "nul";
       dbgs() << " Base.FrameIndex " << Base_FrameIndex << '\n'
@@ -113,7 +113,7 @@
       if (IndexReg.getNode() != 0)
         IndexReg.getNode()->dump();
       else
-        dbgs() << "nul"; 
+        dbgs() << "nul";
       dbgs() << " Disp " << Disp << '\n'
              << "GV ";
       if (GV)
@@ -213,21 +213,21 @@
                              SDValue &Index, SDValue &Disp,
                              SDValue &Segment,
                              SDValue &NodeWithChain);
-    
+
     bool TryFoldLoad(SDNode *P, SDValue N,
                      SDValue &Base, SDValue &Scale,
                      SDValue &Index, SDValue &Disp,
                      SDValue &Segment);
-    
+
     /// SelectInlineAsmMemoryOperand - Implement addressing mode selection for
     /// inline asm expressions.
     virtual bool SelectInlineAsmMemoryOperand(const SDValue &Op,
                                               char ConstraintCode,
                                               std::vector<SDValue> &OutOps);
-    
+
     void EmitSpecialCodeForMain(MachineBasicBlock *BB, MachineFrameInfo *MFI);
 
-    inline void getAddressOperands(X86ISelAddressMode &AM, SDValue &Base, 
+    inline void getAddressOperands(X86ISelAddressMode &AM, SDValue &Base,
                                    SDValue &Scale, SDValue &Index,
                                    SDValue &Disp, SDValue &Segment) {
       Base  = (AM.BaseType == X86ISelAddressMode::FrameIndexBase) ?
@@ -426,7 +426,7 @@
 void X86DAGToDAGISel::PreprocessISelDAG() {
   // OptForSize is used in pattern predicates that isel is matching.
   OptForSize = MF->getFunction()->hasFnAttr(Attribute::OptimizeForSize);
-  
+
   for (SelectionDAG::allnodes_iterator I = CurDAG->allnodes_begin(),
        E = CurDAG->allnodes_end(); I != E; ) {
     SDNode *N = I++;  // Preincrement iterator to avoid invalidation issues.
@@ -462,7 +462,7 @@
       ++NumLoadMoved;
       continue;
     }
-    
+
     // Lower fpround and fpextend nodes that target the FP stack to be store and
     // load to the stack.  This is a gross hack.  We would like to simply mark
     // these as being illegal, but when we do that, legalize produces these when
@@ -473,7 +473,7 @@
     // FIXME: This should only happen when not compiled with -O0.
     if (N->getOpcode() != ISD::FP_ROUND && N->getOpcode() != ISD::FP_EXTEND)
       continue;
-    
+
     EVT SrcVT = N->getOperand(0).getValueType();
     EVT DstVT = N->getValueType(0);
 
@@ -496,7 +496,7 @@
       if (N->getConstantOperandVal(1))
         continue;
     }
-   
+
     // Here we could have an FP stack truncation or an FPStack <-> SSE convert.
     // FPStack has extload and truncstore.  SSE can fold direct loads into other
     // operations.  Based on this, decide what we want to do.
@@ -505,10 +505,10 @@
       MemVT = DstVT;  // FP_ROUND must use DstVT, we can't do a 'trunc load'.
     else
       MemVT = SrcIsSSE ? SrcVT : DstVT;
-    
+
     SDValue MemTmp = CurDAG->CreateStackTemporary(MemVT);
     DebugLoc dl = N->getDebugLoc();
-    
+
     // FIXME: optimize the case where the src/dest is a load or store?
     SDValue Store = CurDAG->getTruncStore(CurDAG->getEntryNode(), dl,
                                           N->getOperand(0),
@@ -524,12 +524,12 @@
     // To avoid invalidating 'I', back it up to the convert node.
     --I;
     CurDAG->ReplaceAllUsesOfValueWith(SDValue(N, 0), Result);
-    
+
     // Now that we did that, the node is dead.  Increment the iterator to the
     // next node to process, then delete N.
     ++I;
     CurDAG->DeleteNode(N);
-  }  
+  }
 }
 
 
@@ -584,7 +584,7 @@
 
 bool X86DAGToDAGISel::MatchLoadInAddress(LoadSDNode *N, X86ISelAddressMode &AM){
   SDValue Address = N->getOperand(1);
-  
+
   // load gs:0 -> GS segment register.
   // load fs:0 -> FS segment register.
   //
@@ -602,7 +602,7 @@
         AM.Segment = CurDAG->getRegister(X86::FS, MVT::i16);
         return false;
       }
-  
+
   return true;
 }
 
@@ -992,7 +992,7 @@
   case ISD::SHL:
     if (AM.IndexReg.getNode() != 0 || AM.Scale != 1)
       break;
-      
+
     if (ConstantSDNode
           *CN = dyn_cast<ConstantSDNode>(N.getNode()->getOperand(1))) {
       unsigned Val = CN->getZExtValue();
@@ -1167,7 +1167,7 @@
         !MatchAddressRecursively(Handle.getValue().getOperand(1), AM, Depth+1))
       return false;
     AM = Backup;
-    
+
     // Try again after commuting the operands.
     if (!MatchAddressRecursively(Handle.getValue().getOperand(1), AM, Depth+1)&&
         !MatchAddressRecursively(Handle.getValue().getOperand(0), AM, Depth+1))
@@ -1203,7 +1203,7 @@
       AM = Backup;
     }
     break;
-      
+
   case ISD::AND: {
     // Perform some heroic transforms on an and of a constant-count shift
     // with a constant to enable use of the scaled offset field.
@@ -1275,7 +1275,7 @@
                                  SDValue &Scale, SDValue &Index,
                                  SDValue &Disp, SDValue &Segment) {
   X86ISelAddressMode AM;
-  
+
   if (Parent &&
       // This list of opcodes are all the nodes that have an "addr:$ptr" operand
       // that are not a MemSDNode, and thus don't have proper addrspace info.
@@ -1290,7 +1290,7 @@
     if (AddrSpace == 257)
       AM.Segment = CurDAG->getRegister(X86::FS, MVT::i16);
   }
-  
+
   if (MatchAddress(N, AM))
     return false;
 
@@ -1336,7 +1336,7 @@
   // elements.  This is a vector shuffle from the zero vector.
   if (N.getOpcode() == X86ISD::VZEXT_MOVL && N.getNode()->hasOneUse() &&
       // Check to see if the top elements are all zeros (or bitcast of zeros).
-      N.getOperand(0).getOpcode() == ISD::SCALAR_TO_VECTOR && 
+      N.getOperand(0).getOpcode() == ISD::SCALAR_TO_VECTOR &&
       N.getOperand(0).getNode()->hasOneUse() &&
       ISD::isNON_EXTLoad(N.getOperand(0).getOperand(0).getNode()) &&
       N.getOperand(0).getOperand(0).hasOneUse() &&
@@ -1411,7 +1411,7 @@
   // If it isn't worth using an LEA, reject it.
   if (Complexity <= 2)
     return false;
-  
+
   getAddressOperands(AM, Base, Scale, Index, Disp, Segment);
   return true;
 }
@@ -1422,7 +1422,7 @@
                                         SDValue &Disp, SDValue &Segment) {
   assert(N.getOpcode() == ISD::TargetGlobalTLSAddress);
   const GlobalAddressSDNode *GA = cast<GlobalAddressSDNode>(N);
-    
+
   X86ISelAddressMode AM;
   AM.GV = GA->getGlobal();
   AM.Disp += GA->getOffset();
@@ -1435,7 +1435,7 @@
   } else {
     AM.IndexReg = CurDAG->getRegister(0, MVT::i64);
   }
-  
+
   getAddressOperands(AM, Base, Scale, Index, Disp, Segment);
   return true;
 }
@@ -1449,7 +1449,7 @@
       !IsProfitableToFold(N, P, P) ||
       !IsLegalToFold(N, P, P, OptLevel))
     return false;
-  
+
   return SelectAddr(N.getNode(),
                     N.getOperand(1), Base, Scale, Index, Disp, Segment);
 }
@@ -1700,7 +1700,7 @@
 SDNode *X86DAGToDAGISel::SelectAtomicLoadArith(SDNode *Node, EVT NVT) {
   if (Node->hasAnyUseOfValue(0))
     return 0;
-  
+
   // Optimize common patterns for __sync_or_and_fetch and similar arith
   // operations where the result is not used. This allows us to use the "lock"
   // version of the arithmetic instruction.
@@ -1727,14 +1727,14 @@
     default:
       return 0;
   }
-  
+
   bool isCN = false;
   ConstantSDNode *CN = dyn_cast<ConstantSDNode>(Val);
   if (CN && (int32_t)CN->getSExtValue() == CN->getSExtValue()) {
     isCN = true;
     Val = CurDAG->getTargetConstant(CN->getSExtValue(), NVT);
   }
-  
+
   unsigned Opc = 0;
   switch (NVT.getSimpleVT().SimpleTy) {
     default: return 0;
@@ -1772,7 +1772,7 @@
       }
       break;
   }
-  
+
   assert(Opc != 0 && "Invalid arith lock transform!");
 
   DebugLoc dl = Node->getDebugLoc();
@@ -1852,7 +1852,7 @@
 /// isLoadIncOrDecStore - Check whether or not the chain ending in StoreNode
 /// is suitable for doing the {load; increment or decrement; store} to modify
 /// transformation.
-static bool isLoadIncOrDecStore(StoreSDNode *StoreNode, unsigned Opc, 
+static bool isLoadIncOrDecStore(StoreSDNode *StoreNode, unsigned Opc,
                                 SDValue StoredVal, SelectionDAG *CurDAG,
                                 LoadSDNode* &LoadNode, SDValue &InputChain) {
 
@@ -1876,15 +1876,15 @@
   // Return LoadNode by reference.
   LoadNode = cast<LoadSDNode>(Load);
   // is the size of the value one that we can handle? (i.e. 64, 32, 16, or 8)
-  EVT LdVT = LoadNode->getMemoryVT();    
-  if (LdVT != MVT::i64 && LdVT != MVT::i32 && LdVT != MVT::i16 && 
+  EVT LdVT = LoadNode->getMemoryVT();
+  if (LdVT != MVT::i64 && LdVT != MVT::i32 && LdVT != MVT::i16 &&
       LdVT != MVT::i8)
     return false;
 
   // Is store the only read of the loaded value?
   if (!Load.hasOneUse())
     return false;
-  
+
   // Is the address of the store the same as the load?
   if (LoadNode->getBasePtr() != StoreNode->getBasePtr() ||
       LoadNode->getOffset() != StoreNode->getOffset())
@@ -1990,7 +1990,7 @@
   unsigned Opc, MOpc;
   unsigned Opcode = Node->getOpcode();
   DebugLoc dl = Node->getDebugLoc();
-  
+
   DEBUG(dbgs() << "Selecting: "; Node->dump(CurDAG); dbgs() << '\n');
 
   if (Node->isMachineOpcode()) {
@@ -2168,7 +2168,7 @@
   case X86ISD::UMUL: {
     SDValue N0 = Node->getOperand(0);
     SDValue N1 = Node->getOperand(1);
-    
+
     unsigned LoReg;
     switch (NVT.getSimpleVT().SimpleTy) {
     default: llvm_unreachable("Unsupported VT!");
@@ -2177,20 +2177,20 @@
     case MVT::i32: LoReg = X86::EAX; Opc = X86::MUL32r; break;
     case MVT::i64: LoReg = X86::RAX; Opc = X86::MUL64r; break;
     }
-    
+
     SDValue InFlag = CurDAG->getCopyToReg(CurDAG->getEntryNode(), dl, LoReg,
                                           N0, SDValue()).getValue(1);
-    
+
     SDVTList VTs = CurDAG->getVTList(NVT, NVT, MVT::i32);
     SDValue Ops[] = {N1, InFlag};
     SDNode *CNode = CurDAG->getMachineNode(Opc, dl, VTs, Ops, 2);
-    
+
     ReplaceUses(SDValue(Node, 0), SDValue(CNode, 0));
     ReplaceUses(SDValue(Node, 1), SDValue(CNode, 1));
     ReplaceUses(SDValue(Node, 2), SDValue(CNode, 2));
     return NULL;
   }
-      
+
   case ISD::SMUL_LOHI:
   case ISD::UMUL_LOHI: {
     SDValue N0 = Node->getOperand(0);
@@ -2287,7 +2287,7 @@
       ReplaceUses(SDValue(Node, 1), Result);
       DEBUG(dbgs() << "=> "; Result.getNode()->dump(CurDAG); dbgs() << '\n');
     }
-    
+
     return NULL;
   }
 
@@ -2555,7 +2555,7 @@
     // a simple increment or decrement through memory of that value, if the
     // uses of the modified value and its address are suitable.
     // The DEC64m tablegen pattern is currently not able to match the case where
-    // the EFLAGS on the original DEC are used. (This also applies to 
+    // the EFLAGS on the original DEC are used. (This also applies to
     // {INC,DEC}X{64,32,16,8}.)
     // We'll need to improve tablegen to allow flags to be transferred from a
     // node in the pattern to the result node.  probably with a new keyword
@@ -2587,7 +2587,7 @@
     MemOp[0] = StoreNode->getMemOperand();
     MemOp[1] = LoadNode->getMemOperand();
     const SDValue Ops[] = { Base, Scale, Index, Disp, Segment, InputChain };
-    EVT LdVT = LoadNode->getMemoryVT();    
+    EVT LdVT = LoadNode->getMemoryVT();
     unsigned newOpc = getFusedLdStOpcode(LdVT, Opc);
     MachineSDNode *Result = CurDAG->getMachineNode(newOpc,
                                                    Node->getDebugLoc(),
@@ -2627,7 +2627,7 @@
       return true;
     break;
   }
-  
+
   OutOps.push_back(Op0);
   OutOps.push_back(Op1);
   OutOps.push_back(Op2);
@@ -2636,7 +2636,7 @@
   return false;
 }
 
-/// createX86ISelDag - This pass converts a legalized DAG into a 
+/// createX86ISelDag - This pass converts a legalized DAG into a
 /// X86-specific DAG, ready for instruction scheduling.
 ///
 FunctionPass *llvm::createX86ISelDag(X86TargetMachine &TM,