Reflects ISD::LOAD / ISD::LOADX / LoadSDNode changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30844 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelDAGToDAG.cpp b/lib/Target/ARM/ARMISelDAGToDAG.cpp
index ccbe594..b3d1cfb 100644
--- a/lib/Target/ARM/ARMISelDAGToDAG.cpp
+++ b/lib/Target/ARM/ARMISelDAGToDAG.cpp
@@ -420,8 +420,7 @@
   GlobalValue  *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
   int alignment = 2;
   SDOperand CPAddr = DAG.getConstantPool(GV, MVT::i32, alignment);
-  return DAG.getLoad(MVT::i32, DAG.getEntryNode(), CPAddr,
-		     DAG.getSrcValue(NULL));
+  return DAG.getLoad(MVT::i32, DAG.getEntryNode(), CPAddr, NULL, 0);
 }
 
 static SDOperand LowerVASTART(SDOperand Op, SelectionDAG &DAG,
@@ -479,7 +478,7 @@
         unsigned   Size = MVT::getSizeInBits(VT)/8;
         int          FI = MFI->CreateFixedObject(Size, Offset);
         SDOperand   FIN = DAG.getFrameIndex(FI, VT);
-        Value = DAG.getLoad(VT, Root, FIN, DAG.getSrcValue(NULL));
+        Value = DAG.getLoad(VT, Root, FIN, NULL, 0);
       } else {
         Value = DAG.getNode(ISD::UNDEF, VT);
       }
diff --git a/lib/Target/Alpha/AlphaISelLowering.cpp b/lib/Target/Alpha/AlphaISelLowering.cpp
index 068e6b2..dfa1e2f 100644
--- a/lib/Target/Alpha/AlphaISelLowering.cpp
+++ b/lib/Target/Alpha/AlphaISelLowering.cpp
@@ -254,7 +254,7 @@
       // Create the SelectionDAG nodes corresponding to a load
       //from this parameter
       SDOperand FIN = DAG.getFrameIndex(FI, MVT::i64);
-      ArgVal = DAG.getLoad(ObjectVT, Root, FIN, DAG.getSrcValue(NULL));
+      ArgVal = DAG.getLoad(ObjectVT, Root, FIN, NULL, 0);
     }
     ArgValues.push_back(ArgVal);
   }
@@ -430,7 +430,7 @@
       SDOperand FI = DAG.getFrameIndex(FrameIdx, MVT::i64);
       SDOperand ST = DAG.getStore(DAG.getEntryNode(),
                                   Op.getOperand(0), FI, DAG.getSrcValue(0));
-      LD = DAG.getLoad(MVT::f64, ST, FI, DAG.getSrcValue(0));
+      LD = DAG.getLoad(MVT::f64, ST, FI, NULL, 0);
       }
     SDOperand FP = DAG.getNode(isDouble?AlphaISD::CVTQT_:AlphaISD::CVTQS_,
                                isDouble?MVT::f64:MVT::f32, LD);
@@ -453,7 +453,7 @@
       SDOperand FI = DAG.getFrameIndex(FrameIdx, MVT::i64);
       SDOperand ST = DAG.getStore(DAG.getEntryNode(),
                                   src, FI, DAG.getSrcValue(0));
-      return DAG.getLoad(MVT::i64, ST, FI, DAG.getSrcValue(0));
+      return DAG.getLoad(MVT::i64, ST, FI, NULL, 0);
       }
   }
   case ISD::ConstantPool: {
@@ -523,13 +523,14 @@
   case ISD::VAARG: {
     SDOperand Chain = Op.getOperand(0);
     SDOperand VAListP = Op.getOperand(1);
-    SDOperand VAListS = Op.getOperand(2);
+    SrcValueSDNode *VAListS = cast<SrcValueSDNode>(Op.getOperand(2));
     
-    SDOperand Base = DAG.getLoad(MVT::i64, Chain, VAListP, VAListS);
+    SDOperand Base = DAG.getLoad(MVT::i64, Chain, VAListP, VAListS->getValue(),
+                                 VAListS->getOffset());
     SDOperand Tmp = DAG.getNode(ISD::ADD, MVT::i64, VAListP,
                                 DAG.getConstant(8, MVT::i64));
     SDOperand Offset = DAG.getExtLoad(ISD::SEXTLOAD, MVT::i64, Base.getValue(1),
-                                      Tmp, DAG.getSrcValue(0), MVT::i32);
+                                      Tmp, NULL, 0, MVT::i32);
     SDOperand DataPtr = DAG.getNode(ISD::ADD, MVT::i64, Base, Offset);
     if (MVT::isFloatingPoint(Op.getValueType()))
     {
@@ -551,10 +552,9 @@
     SDOperand Result;
     if (Op.getValueType() == MVT::i32)
       Result = DAG.getExtLoad(ISD::SEXTLOAD, MVT::i64, Update, DataPtr,
-                              DAG.getSrcValue(0), MVT::i32);
+                              NULL, 0, MVT::i32);
     else
-      Result = DAG.getLoad(Op.getValueType(), Update, DataPtr, 
-                           DAG.getSrcValue(0));
+      Result = DAG.getLoad(Op.getValueType(), Update, DataPtr, NULL, 0);
     return Result;
   }
   case ISD::VACOPY: {
@@ -562,14 +562,14 @@
     SDOperand DestP = Op.getOperand(1);
     SDOperand SrcP = Op.getOperand(2);
     SDOperand DestS = Op.getOperand(3);
-    SDOperand SrcS = Op.getOperand(4);
+    SrcValueSDNode *SrcS = cast<SrcValueSDNode>(Op.getOperand(4));
     
-    SDOperand Val = DAG.getLoad(getPointerTy(), Chain, SrcP, SrcS);
+    SDOperand Val = DAG.getLoad(getPointerTy(), Chain, SrcP,
+                                SrcS->getValue(), SrcS->getOffset());
     SDOperand Result = DAG.getStore(Val.getValue(1), Val, DestP, DestS);
     SDOperand NP = DAG.getNode(ISD::ADD, MVT::i64, SrcP, 
                                DAG.getConstant(8, MVT::i64));
-    Val = DAG.getExtLoad(ISD::SEXTLOAD, MVT::i64, Result, NP,
-                         DAG.getSrcValue(0), MVT::i32);
+    Val = DAG.getExtLoad(ISD::SEXTLOAD, MVT::i64, Result, NP, NULL,0, MVT::i32);
     SDOperand NPD = DAG.getNode(ISD::ADD, MVT::i64, DestP,
                                 DAG.getConstant(8, MVT::i64));
     return DAG.getNode(ISD::TRUNCSTORE, MVT::Other, Val.getValue(1),
diff --git a/lib/Target/Alpha/AlphaInstrInfo.td b/lib/Target/Alpha/AlphaInstrInfo.td
index ceac056..6068956 100644
--- a/lib/Target/Alpha/AlphaInstrInfo.td
+++ b/lib/Target/Alpha/AlphaInstrInfo.td
@@ -484,17 +484,17 @@
 def LDQr  : MForm<0x29, 0, 1, "ldq $RA,$DISP($RB)\t\t!gprellow",
                  [(set GPRC:$RA, (load (Alpha_gprello tglobaladdr:$DISP, GPRC:$RB)))], s_ild>;
 def LDL   : MForm<0x28, 0, 1, "ldl $RA,$DISP($RB)",
-                 [(set GPRC:$RA, (sextload (add GPRC:$RB, immSExt16:$DISP), i32))], s_ild>;
+                 [(set GPRC:$RA, (sextloadi32 (add GPRC:$RB, immSExt16:$DISP)))], s_ild>;
 def LDLr  : MForm<0x28, 0, 1, "ldl $RA,$DISP($RB)\t\t!gprellow",
-                 [(set GPRC:$RA, (sextload (Alpha_gprello tglobaladdr:$DISP, GPRC:$RB), i32))], s_ild>;
+                 [(set GPRC:$RA, (sextloadi32 (Alpha_gprello tglobaladdr:$DISP, GPRC:$RB)))], s_ild>;
 def LDBU  : MForm<0x0A, 0, 1, "ldbu $RA,$DISP($RB)",
-                 [(set GPRC:$RA, (zextload (add GPRC:$RB, immSExt16:$DISP), i8))], s_ild>;
+                 [(set GPRC:$RA, (zextloadi8 (add GPRC:$RB, immSExt16:$DISP)))], s_ild>;
 def LDBUr : MForm<0x0A, 0, 1, "ldbu $RA,$DISP($RB)\t\t!gprellow",
-                 [(set GPRC:$RA, (zextload (Alpha_gprello tglobaladdr:$DISP, GPRC:$RB), i8))], s_ild>;
+                 [(set GPRC:$RA, (zextloadi8 (Alpha_gprello tglobaladdr:$DISP, GPRC:$RB)))], s_ild>;
 def LDWU  : MForm<0x0C, 0, 1, "ldwu $RA,$DISP($RB)",
-                 [(set GPRC:$RA, (zextload (add GPRC:$RB, immSExt16:$DISP), i16))], s_ild>;
+                 [(set GPRC:$RA, (zextloadi16 (add GPRC:$RB, immSExt16:$DISP)))], s_ild>;
 def LDWUr : MForm<0x0C, 0, 1, "ldwu $RA,$DISP($RB)\t\t!gprellow",
-                 [(set GPRC:$RA, (zextload (Alpha_gprello tglobaladdr:$DISP, GPRC:$RB), i16))], s_ild>;
+                 [(set GPRC:$RA, (zextloadi16 (Alpha_gprello tglobaladdr:$DISP, GPRC:$RB)))], s_ild>;
 def STB   : MForm<0x0E, 1, 0, "stb $RA,$DISP($RB)",
 		 [(truncstore GPRC:$RA, (add GPRC:$RB, immSExt16:$DISP), i8)], s_ist>;
 def STBr  : MForm<0x0E, 1, 0, "stb $RA,$DISP($RB)\t\t!gprellow",
@@ -548,11 +548,11 @@
 //constpool rels
 def : Pat<(i64 (load (Alpha_gprello tconstpool:$DISP, GPRC:$RB))),
           (LDQr tconstpool:$DISP, GPRC:$RB)>;
-def : Pat<(i64 (sextload (Alpha_gprello tconstpool:$DISP, GPRC:$RB), i32)),
+def : Pat<(i64 (sextloadi32 (Alpha_gprello tconstpool:$DISP, GPRC:$RB))),
           (LDLr tconstpool:$DISP, GPRC:$RB)>;
-def : Pat<(i64 (zextload (Alpha_gprello tconstpool:$DISP, GPRC:$RB), i8)),
+def : Pat<(i64 (zextloadi8 (Alpha_gprello tconstpool:$DISP, GPRC:$RB))),
           (LDBUr tconstpool:$DISP, GPRC:$RB)>;
-def : Pat<(i64 (zextload (Alpha_gprello tconstpool:$DISP, GPRC:$RB), i16)),
+def : Pat<(i64 (zextloadi16 (Alpha_gprello tconstpool:$DISP, GPRC:$RB))),
           (LDWUr tconstpool:$DISP, GPRC:$RB)>;
 def : Pat<(i64 (Alpha_gprello tconstpool:$DISP, GPRC:$RB)),
           (LDAr tconstpool:$DISP, GPRC:$RB)>;
@@ -571,11 +571,11 @@
 
 
 //misc ext patterns
-def : Pat<(i64 (extload (add GPRC:$RB, immSExt16:$DISP), i8)),
+def : Pat<(i64 (extloadi8 (add GPRC:$RB, immSExt16:$DISP))),
           (LDBU   immSExt16:$DISP, GPRC:$RB)>;
-def : Pat<(i64 (extload (add GPRC:$RB, immSExt16:$DISP), i16)),
+def : Pat<(i64 (extloadi16 (add GPRC:$RB, immSExt16:$DISP))),
           (LDWU  immSExt16:$DISP, GPRC:$RB)>;
-def : Pat<(i64 (extload (add GPRC:$RB, immSExt16:$DISP), i32)),
+def : Pat<(i64 (extloadi32 (add GPRC:$RB, immSExt16:$DISP))),
           (LDL   immSExt16:$DISP, GPRC:$RB)>;
 
 //0 disp patterns
@@ -585,17 +585,17 @@
           (LDT  0, GPRC:$addr)>;
 def : Pat<(f32 (load GPRC:$addr)),
           (LDS  0, GPRC:$addr)>;
-def : Pat<(i64 (sextload GPRC:$addr, i32)),
+def : Pat<(i64 (sextloadi32 GPRC:$addr)),
           (LDL  0, GPRC:$addr)>;
-def : Pat<(i64 (zextload GPRC:$addr, i16)),
+def : Pat<(i64 (zextloadi16 GPRC:$addr)),
           (LDWU 0, GPRC:$addr)>;
-def : Pat<(i64 (zextload GPRC:$addr, i8)),
+def : Pat<(i64 (zextloadi8 GPRC:$addr)),
           (LDBU 0, GPRC:$addr)>;
-def : Pat<(i64 (extload GPRC:$addr, i8)),
+def : Pat<(i64 (extloadi8 GPRC:$addr)),
           (LDBU 0, GPRC:$addr)>;
-def : Pat<(i64 (extload GPRC:$addr, i16)),
+def : Pat<(i64 (extloadi16 GPRC:$addr)),
           (LDWU 0, GPRC:$addr)>;
-def : Pat<(i64 (extload GPRC:$addr, i32)),
+def : Pat<(i64 (extloadi32 GPRC:$addr)),
           (LDL  0, GPRC:$addr)>;
 
 def : Pat<(store GPRC:$DATA, GPRC:$addr),
diff --git a/lib/Target/IA64/IA64ISelDAGToDAG.cpp b/lib/Target/IA64/IA64ISelDAGToDAG.cpp
index 5add5d6..79252bc 100644
--- a/lib/Target/IA64/IA64ISelDAGToDAG.cpp
+++ b/lib/Target/IA64/IA64ISelDAGToDAG.cpp
@@ -453,15 +453,14 @@
  }
 */
 
-  case ISD::LOAD:
-  case ISD::LOADX: { // FIXME: load -1, not 1, for bools?
-    SDOperand Chain = N->getOperand(0);
-    SDOperand Address = N->getOperand(1);
+  case ISD::LOAD: { // FIXME: load -1, not 1, for bools?
+    LoadSDNode *LD = cast<LoadSDNode>(N);
+    SDOperand Chain = LD->getChain();
+    SDOperand Address = LD->getBasePtr();
     AddToISelQueue(Chain);
     AddToISelQueue(Address);
 
-    MVT::ValueType TypeBeingLoaded = (N->getOpcode() == ISD::LOAD) ?
-      N->getValueType(0) : cast<VTSDNode>(N->getOperand(3))->getVT();
+    MVT::ValueType TypeBeingLoaded = LD->getLoadVT();
     unsigned Opc;
     switch (TypeBeingLoaded) {
     default:
diff --git a/lib/Target/IA64/IA64ISelLowering.cpp b/lib/Target/IA64/IA64ISelLowering.cpp
index 47421a5..450a47b 100644
--- a/lib/Target/IA64/IA64ISelLowering.cpp
+++ b/lib/Target/IA64/IA64ISelLowering.cpp
@@ -133,7 +133,7 @@
 static bool isFloatingPointZero(SDOperand Op) {
   if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(Op))
     return CFP->isExactlyValue(-0.0) || CFP->isExactlyValue(0.0);
-  else if (Op.getOpcode() == ISD::EXTLOAD || Op.getOpcode() == ISD::LOAD) {
+  else if (ISD::isEXTLoad(Op.Val) || ISD::isNON_EXTLoad(Op.Val)) {
     // Maybe this has already been legalized into the constant pool?
     if (ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Op.getOperand(1)))
       if (ConstantFP *CFP = dyn_cast<ConstantFP>(CP->getConstVal()))
@@ -226,7 +226,7 @@
         //from this parameter
         SDOperand FIN = DAG.getFrameIndex(FI, MVT::i64);
         argt = newroot = DAG.getLoad(getValueType(I->getType()),
-                                     DAG.getEntryNode(), FIN, DAG.getSrcValue(NULL));
+                                     DAG.getEntryNode(), FIN, NULL, 0);
       }
       ++count;
       DAG.setRoot(newroot.getValue(1));
@@ -583,8 +583,9 @@
   }
   case ISD::VAARG: {
     MVT::ValueType VT = getPointerTy();
+    SrcValueSDNode *SV = cast<SrcValueSDNode>(Op.getOperand(2));
     SDOperand VAList = DAG.getLoad(VT, Op.getOperand(0), Op.getOperand(1), 
-                                   Op.getOperand(2));
+                                   SV->getValue(), SV->getOffset());
     // Increment the pointer, VAList, to the next vaarg
     SDOperand VAIncr = DAG.getNode(ISD::ADD, VT, VAList, 
                                    DAG.getConstant(MVT::getSizeInBits(VT)/8, 
@@ -593,7 +594,7 @@
     VAIncr = DAG.getStore(VAList.getValue(1), VAIncr,
                           Op.getOperand(1), Op.getOperand(2));
     // Load the actual argument out of the pointer VAList
-    return DAG.getLoad(Op.getValueType(), VAIncr, VAList, DAG.getSrcValue(0));
+    return DAG.getLoad(Op.getValueType(), VAIncr, VAList, NULL, 0);
   }
   case ISD::VASTART: {
     // vastart just stores the address of the VarArgsFrameIndex slot into the
diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index 9624e66..900dd3c 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -311,7 +311,7 @@
 static bool isFloatingPointZero(SDOperand Op) {
   if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(Op))
     return CFP->isExactlyValue(-0.0) || CFP->isExactlyValue(0.0);
-  else if (ISD::isEXTLoad(Op.Val) || Op.getOpcode() == ISD::LOAD) {
+  else if (ISD::isEXTLoad(Op.Val) || ISD::isNON_EXTLoad(Op.Val)) {
     // Maybe this has already been legalized into the constant pool?
     if (ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Op.getOperand(1)))
       if (ConstantFP *CFP = dyn_cast<ConstantFP>(CP->getConstVal()))
@@ -694,7 +694,7 @@
   
   // If the global is weak or external, we have to go through the lazy
   // resolution stub.
-  return DAG.getLoad(PtrVT, DAG.getEntryNode(), Lo, DAG.getSrcValue(0));
+  return DAG.getLoad(PtrVT, DAG.getEntryNode(), Lo, NULL, 0);
 }
 
 static SDOperand LowerSETCC(SDOperand Op, SelectionDAG &DAG) {
@@ -873,8 +873,7 @@
       if (!Op.Val->hasNUsesOfValue(0, ArgNo)) {
         int FI = MFI->CreateFixedObject(ObjSize, CurArgOffset);
         SDOperand FIN = DAG.getFrameIndex(FI, PtrVT);
-        ArgVal = DAG.getLoad(ObjectVT, Root, FIN,
-                             DAG.getSrcValue(NULL));
+        ArgVal = DAG.getLoad(ObjectVT, Root, FIN, NULL, 0);
       } else {
         // Don't emit a dead load.
         ArgVal = DAG.getNode(ISD::UNDEF, ObjectVT);
@@ -1051,16 +1050,14 @@
 
           // Float varargs are always shadowed in available integer registers
           if (GPR_idx != NumGPRs) {
-            SDOperand Load = DAG.getLoad(PtrVT, Store, PtrOff,
-                                         DAG.getSrcValue(NULL));
+            SDOperand Load = DAG.getLoad(PtrVT, Store, PtrOff, NULL, 0);
             MemOpChains.push_back(Load.getValue(1));
             RegsToPass.push_back(std::make_pair(GPR[GPR_idx++], Load));
           }
           if (GPR_idx != NumGPRs && Arg.getValueType() == MVT::f64) {
             SDOperand ConstFour = DAG.getConstant(4, PtrOff.getValueType());
             PtrOff = DAG.getNode(ISD::ADD, PtrVT, PtrOff, ConstFour);
-            SDOperand Load = DAG.getLoad(PtrVT, Store, PtrOff,
-                                         DAG.getSrcValue(NULL));
+            SDOperand Load = DAG.getLoad(PtrVT, Store, PtrOff, NULL, 0);
             MemOpChains.push_back(Load.getValue(1));
             RegsToPass.push_back(std::make_pair(GPR[GPR_idx++], Load));
           }
@@ -1401,7 +1398,7 @@
                                 DAG.getEntryNode(), Ext64, FIdx,
                                 DAG.getSrcValue(NULL));
   // Load the value as a double.
-  SDOperand Ld = DAG.getLoad(MVT::f64, Store, FIdx, DAG.getSrcValue(NULL));
+  SDOperand Ld = DAG.getLoad(MVT::f64, Store, FIdx, NULL, 0);
   
   // FCFID it and return it.
   SDOperand FP = DAG.getNode(PPCISD::FCFID, MVT::f64, Ld);
@@ -2124,7 +2121,7 @@
   SDOperand Store = DAG.getStore(DAG.getEntryNode(),
                                  Op.getOperand(0), FIdx,DAG.getSrcValue(NULL));
   // Load it out.
-  return DAG.getLoad(Op.getValueType(), Store, FIdx, DAG.getSrcValue(NULL));
+  return DAG.getLoad(Op.getValueType(), Store, FIdx, NULL, 0);
 }
 
 static SDOperand LowerMUL(SDOperand Op, SelectionDAG &DAG) {
@@ -2383,18 +2380,20 @@
     break;
   case ISD::BSWAP:
     // Turn BSWAP (LOAD) -> lhbrx/lwbrx.
-    if (N->getOperand(0).getOpcode() == ISD::LOAD &&
+    if (ISD::isNON_EXTLoad(N->getOperand(0).Val) &&
         N->getOperand(0).hasOneUse() &&
         (N->getValueType(0) == MVT::i32 || N->getValueType(0) == MVT::i16)) {
       SDOperand Load = N->getOperand(0);
+      LoadSDNode *LD = cast<LoadSDNode>(Load);
       // Create the byte-swapping load.
       std::vector<MVT::ValueType> VTs;
       VTs.push_back(MVT::i32);
       VTs.push_back(MVT::Other);
+      SDOperand SV = DAG.getSrcValue(LD->getSrcValue(), LD->getSrcValueOffset());
       SDOperand Ops[] = {
-        Load.getOperand(0),   // Chain
-        Load.getOperand(1),   // Ptr
-        Load.getOperand(2),   // SrcValue
+        LD->getChain(),    // Chain
+        LD->getBasePtr(),  // Ptr
+        SV,                // SrcValue
         DAG.getValueType(N->getValueType(0)) // VT
       };
       SDOperand BSLoad = DAG.getNode(PPCISD::LBRX, VTs, Ops, 4);
diff --git a/lib/Target/PowerPC/PPCInstr64Bit.td b/lib/Target/PowerPC/PPCInstr64Bit.td
index d822c66..762a754 100644
--- a/lib/Target/PowerPC/PPCInstr64Bit.td
+++ b/lib/Target/PowerPC/PPCInstr64Bit.td
@@ -233,41 +233,41 @@
 // Sign extending loads.
 def LHA8: DForm_1<42, (ops G8RC:$rD, memri:$src),
                   "lha $rD, $src", LdStLHA,
-                  [(set G8RC:$rD, (sextload iaddr:$src, i16))]>,
+                  [(set G8RC:$rD, (sextloadi16 iaddr:$src))]>,
                   PPC970_DGroup_Cracked;
 def LWA  : DSForm_1<58, 2, (ops G8RC:$rD, memrix:$src),
                     "lwa $rD, $src", LdStLWA,
-                    [(set G8RC:$rD, (sextload ixaddr:$src, i32))]>, isPPC64,
+                    [(set G8RC:$rD, (sextloadi32 ixaddr:$src))]>, isPPC64,
                     PPC970_DGroup_Cracked;
 def LHAX8: XForm_1<31, 343, (ops G8RC:$rD, memrr:$src),
                    "lhax $rD, $src", LdStLHA,
-                   [(set G8RC:$rD, (sextload xaddr:$src, i16))]>,
+                   [(set G8RC:$rD, (sextloadi16 xaddr:$src))]>,
                    PPC970_DGroup_Cracked;
 def LWAX : XForm_1<31, 341, (ops G8RC:$rD, memrr:$src),
                    "lwax $rD, $src", LdStLHA,
-                   [(set G8RC:$rD, (sextload xaddr:$src, i32))]>, isPPC64,
+                   [(set G8RC:$rD, (sextloadi32 xaddr:$src))]>, isPPC64,
                    PPC970_DGroup_Cracked;
 
 // Zero extending loads.
 def LBZ8 : DForm_1<34, (ops G8RC:$rD, memri:$src),
                   "lbz $rD, $src", LdStGeneral,
-                  [(set G8RC:$rD, (zextload iaddr:$src, i8))]>;
+                  [(set G8RC:$rD, (zextloadi8 iaddr:$src))]>;
 def LHZ8 : DForm_1<40, (ops G8RC:$rD, memri:$src),
                   "lhz $rD, $src", LdStGeneral,
-                  [(set G8RC:$rD, (zextload iaddr:$src, i16))]>;
+                  [(set G8RC:$rD, (zextloadi16 iaddr:$src))]>;
 def LWZ8 : DForm_1<32, (ops G8RC:$rD, memri:$src),
                   "lwz $rD, $src", LdStGeneral,
-                  [(set G8RC:$rD, (zextload iaddr:$src, i32))]>, isPPC64;
+                  [(set G8RC:$rD, (zextloadi32 iaddr:$src))]>, isPPC64;
 
 def LBZX8 : XForm_1<31,  87, (ops G8RC:$rD, memrr:$src),
                    "lbzx $rD, $src", LdStGeneral,
-                   [(set G8RC:$rD, (zextload xaddr:$src, i8))]>;
+                   [(set G8RC:$rD, (zextloadi8 xaddr:$src))]>;
 def LHZX8 : XForm_1<31, 279, (ops G8RC:$rD, memrr:$src),
                    "lhzx $rD, $src", LdStGeneral,
-                   [(set G8RC:$rD, (zextload xaddr:$src, i16))]>;
+                   [(set G8RC:$rD, (zextloadi16 xaddr:$src))]>;
 def LWZX8 : XForm_1<31,  23, (ops G8RC:$rD, memrr:$src),
                    "lwzx $rD, $src", LdStGeneral,
-                   [(set G8RC:$rD, (zextload xaddr:$src, i32))]>;
+                   [(set G8RC:$rD, (zextloadi32 xaddr:$src))]>;
 
 
 // Full 8-byte loads.
@@ -397,25 +397,25 @@
           (OR8To4 G8RC:$in, G8RC:$in)>;
 
 // Extending loads with i64 targets.
-def : Pat<(zextload iaddr:$src, i1),
+def : Pat<(zextloadi1 iaddr:$src),
           (LBZ8 iaddr:$src)>;
-def : Pat<(zextload xaddr:$src, i1),
+def : Pat<(zextloadi1 xaddr:$src),
           (LBZX8 xaddr:$src)>;
-def : Pat<(extload iaddr:$src, i1),
+def : Pat<(extloadi1 iaddr:$src),
           (LBZ8 iaddr:$src)>;
-def : Pat<(extload xaddr:$src, i1),
+def : Pat<(extloadi1 xaddr:$src),
           (LBZX8 xaddr:$src)>;
-def : Pat<(extload iaddr:$src, i8),
+def : Pat<(extloadi8 iaddr:$src),
           (LBZ8 iaddr:$src)>;
-def : Pat<(extload xaddr:$src, i8),
+def : Pat<(extloadi8 xaddr:$src),
           (LBZX8 xaddr:$src)>;
-def : Pat<(extload iaddr:$src, i16),
+def : Pat<(extloadi16 iaddr:$src),
           (LHZ8 iaddr:$src)>;
-def : Pat<(extload xaddr:$src, i16),
+def : Pat<(extloadi16 xaddr:$src),
           (LHZX8 xaddr:$src)>;
-def : Pat<(extload iaddr:$src, i32),
+def : Pat<(extloadi32 iaddr:$src),
           (LWZ8 iaddr:$src)>;
-def : Pat<(extload xaddr:$src, i32),
+def : Pat<(extloadi32 xaddr:$src),
           (LWZX8 xaddr:$src)>;
 
 // SHL/SRL
diff --git a/lib/Target/PowerPC/PPCInstrInfo.td b/lib/Target/PowerPC/PPCInstrInfo.td
index 4c6b36b..f346717 100644
--- a/lib/Target/PowerPC/PPCInstrInfo.td
+++ b/lib/Target/PowerPC/PPCInstrInfo.td
@@ -379,14 +379,14 @@
 let isLoad = 1, PPC970_Unit = 2 in {
 def LBZ : DForm_1<34, (ops GPRC:$rD, memri:$src),
                   "lbz $rD, $src", LdStGeneral,
-                  [(set GPRC:$rD, (zextload iaddr:$src, i8))]>;
+                  [(set GPRC:$rD, (zextloadi8 iaddr:$src))]>;
 def LHA : DForm_1<42, (ops GPRC:$rD, memri:$src),
                   "lha $rD, $src", LdStLHA,
-                  [(set GPRC:$rD, (sextload iaddr:$src, i16))]>,
+                  [(set GPRC:$rD, (sextloadi16 iaddr:$src))]>,
                   PPC970_DGroup_Cracked;
 def LHZ : DForm_1<40, (ops GPRC:$rD, memri:$src),
                   "lhz $rD, $src", LdStGeneral,
-                  [(set GPRC:$rD, (zextload iaddr:$src, i16))]>;
+                  [(set GPRC:$rD, (zextloadi16 iaddr:$src))]>;
 def LWZ : DForm_1<32, (ops GPRC:$rD, memri:$src),
                   "lwz $rD, $src", LdStGeneral,
                   [(set GPRC:$rD, (load iaddr:$src))]>;
@@ -490,14 +490,14 @@
 let isLoad = 1, PPC970_Unit = 2 in {
 def LBZX : XForm_1<31,  87, (ops GPRC:$rD, memrr:$src),
                    "lbzx $rD, $src", LdStGeneral,
-                   [(set GPRC:$rD, (zextload xaddr:$src, i8))]>;
+                   [(set GPRC:$rD, (zextloadi8 xaddr:$src))]>;
 def LHAX : XForm_1<31, 343, (ops GPRC:$rD, memrr:$src),
                    "lhax $rD, $src", LdStLHA,
-                   [(set GPRC:$rD, (sextload xaddr:$src, i16))]>,
+                   [(set GPRC:$rD, (sextloadi16 xaddr:$src))]>,
                    PPC970_DGroup_Cracked;
 def LHZX : XForm_1<31, 279, (ops GPRC:$rD, memrr:$src),
                    "lhzx $rD, $src", LdStGeneral,
-                   [(set GPRC:$rD, (zextload xaddr:$src, i16))]>;
+                   [(set GPRC:$rD, (zextloadi16 xaddr:$src))]>;
 def LWZX : XForm_1<31,  23, (ops GPRC:$rD, memrr:$src),
                    "lwzx $rD, $src", LdStGeneral,
                    [(set GPRC:$rD, (load xaddr:$src))]>;
@@ -990,25 +990,25 @@
 def : Pat<(shl GPRC:$rS, GPRC:$rB),
           (SLW GPRC:$rS, GPRC:$rB)>;
 
-def : Pat<(zextload iaddr:$src, i1),
+def : Pat<(zextloadi1 iaddr:$src),
           (LBZ iaddr:$src)>;
-def : Pat<(zextload xaddr:$src, i1),
+def : Pat<(zextloadi1 xaddr:$src),
           (LBZX xaddr:$src)>;
-def : Pat<(extload iaddr:$src, i1),
+def : Pat<(extloadi1 iaddr:$src),
           (LBZ iaddr:$src)>;
-def : Pat<(extload xaddr:$src, i1),
+def : Pat<(extloadi1 xaddr:$src),
           (LBZX xaddr:$src)>;
-def : Pat<(extload iaddr:$src, i8),
+def : Pat<(extloadi8 iaddr:$src),
           (LBZ iaddr:$src)>;
-def : Pat<(extload xaddr:$src, i8),
+def : Pat<(extloadi8 xaddr:$src),
           (LBZX xaddr:$src)>;
-def : Pat<(extload iaddr:$src, i16),
+def : Pat<(extloadi16 iaddr:$src),
           (LHZ iaddr:$src)>;
-def : Pat<(extload xaddr:$src, i16),
+def : Pat<(extloadi16 xaddr:$src),
           (LHZX xaddr:$src)>;
-def : Pat<(extload iaddr:$src, f32),
+def : Pat<(extloadf32 iaddr:$src),
           (FMRSD (LFS iaddr:$src))>;
-def : Pat<(extload xaddr:$src, f32),
+def : Pat<(extloadf32 xaddr:$src),
           (FMRSD (LFSX xaddr:$src))>;
 
 include "PPCInstrAltivec.td"
diff --git a/lib/Target/Sparc/SparcISelDAGToDAG.cpp b/lib/Target/Sparc/SparcISelDAGToDAG.cpp
index 84bad9a..c92a19b 100644
--- a/lib/Target/Sparc/SparcISelDAGToDAG.cpp
+++ b/lib/Target/Sparc/SparcISelDAGToDAG.cpp
@@ -330,7 +330,7 @@
         SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
         SDOperand Load;
         if (ObjectVT == MVT::i32) {
-          Load = DAG.getLoad(MVT::i32, Root, FIPtr, DAG.getSrcValue(0));
+          Load = DAG.getLoad(MVT::i32, Root, FIPtr, NULL, 0);
         } else {
           ISD::LoadExtType LoadOp =
             I->getType()->isSigned() ? ISD::SEXTLOAD : ISD::ZEXTLOAD;
@@ -340,7 +340,7 @@
           FIPtr = DAG.getNode(ISD::ADD, MVT::i32, FIPtr,
                               DAG.getConstant(Offset, MVT::i32));
           Load = DAG.getExtLoad(LoadOp, MVT::i32, Root, FIPtr,
-                                DAG.getSrcValue(0), ObjectVT);
+                                NULL, 0, ObjectVT);
           Load = DAG.getNode(ISD::TRUNCATE, ObjectVT, Load);
         }
         ArgValues.push_back(Load);
@@ -363,7 +363,7 @@
       } else {
         int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset);
         SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
-        SDOperand Load = DAG.getLoad(MVT::f32, Root, FIPtr, DAG.getSrcValue(0));
+        SDOperand Load = DAG.getLoad(MVT::f32, Root, FIPtr, NULL, 0);
         ArgValues.push_back(Load);
       }
       ArgOffset += 4;
@@ -384,8 +384,7 @@
         // because the double wouldn't be aligned!
         int FrameIdx = MF.getFrameInfo()->CreateFixedObject(8, ArgOffset);
         SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
-        ArgValues.push_back(DAG.getLoad(MVT::f64, Root, FIPtr, 
-                                        DAG.getSrcValue(0)));
+        ArgValues.push_back(DAG.getLoad(MVT::f64, Root, FIPtr, NULL, 0));
       } else {
         SDOperand HiVal;
         if (CurArgReg < ArgRegEnd) {  // Lives in an incoming GPR
@@ -395,7 +394,7 @@
         } else {
           int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset);
           SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
-          HiVal = DAG.getLoad(MVT::i32, Root, FIPtr, DAG.getSrcValue(0));
+          HiVal = DAG.getLoad(MVT::i32, Root, FIPtr, NULL, 0);
         }
         
         SDOperand LoVal;
@@ -406,7 +405,7 @@
         } else {
           int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset+4);
           SDOperand FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
-          LoVal = DAG.getLoad(MVT::i32, Root, FIPtr, DAG.getSrcValue(0));
+          LoVal = DAG.getLoad(MVT::i32, Root, FIPtr, NULL, 0);
         }
         
         // Compose the two halves together into an i64 unit.
@@ -794,8 +793,9 @@
     MVT::ValueType VT = Node->getValueType(0);
     SDOperand InChain = Node->getOperand(0);
     SDOperand VAListPtr = Node->getOperand(1);
+    SrcValueSDNode *SV = cast<SrcValueSDNode>(Node->getOperand(2));
     SDOperand VAList = DAG.getLoad(getPointerTy(), InChain, VAListPtr,
-                                   Node->getOperand(2));
+                                   SV->getValue(), SV->getOffset());
     // Increment the pointer, VAList, to the next vaarg
     SDOperand NextPtr = DAG.getNode(ISD::ADD, getPointerTy(), VAList, 
                                     DAG.getConstant(MVT::getSizeInBits(VT)/8, 
@@ -806,10 +806,10 @@
     // Load the actual argument out of the pointer VAList, unless this is an
     // f64 load.
     if (VT != MVT::f64) {
-      return DAG.getLoad(VT, InChain, VAList, DAG.getSrcValue(0));
+      return DAG.getLoad(VT, InChain, VAList, NULL, 0);
     } else {
       // Otherwise, load it as i64, then do a bitconvert.
-      SDOperand V = DAG.getLoad(MVT::i64, InChain, VAList, DAG.getSrcValue(0));
+      SDOperand V = DAG.getLoad(MVT::i64, InChain, VAList, NULL, 0);
       std::vector<MVT::ValueType> Tys;
       Tys.push_back(MVT::f64);
       Tys.push_back(MVT::Other);
diff --git a/lib/Target/Sparc/SparcInstrInfo.td b/lib/Target/Sparc/SparcInstrInfo.td
index 0137a0d..6fc4481 100644
--- a/lib/Target/Sparc/SparcInstrInfo.td
+++ b/lib/Target/Sparc/SparcInstrInfo.td
@@ -278,35 +278,35 @@
 def LDSBrr : F3_1<3, 0b001001,
                   (ops IntRegs:$dst, MEMrr:$addr),
                   "ldsb [$addr], $dst",
-                  [(set IntRegs:$dst, (sextload ADDRrr:$addr, i8))]>;
+                  [(set IntRegs:$dst, (sextloadi8 ADDRrr:$addr))]>;
 def LDSBri : F3_2<3, 0b001001,
                   (ops IntRegs:$dst, MEMri:$addr),
                   "ldsb [$addr], $dst",
-                  [(set IntRegs:$dst, (sextload ADDRri:$addr, i8))]>;
+                  [(set IntRegs:$dst, (sextloadi8 ADDRri:$addr))]>;
 def LDSHrr : F3_1<3, 0b001010,
                   (ops IntRegs:$dst, MEMrr:$addr),
                   "ldsh [$addr], $dst",
-                  [(set IntRegs:$dst, (sextload ADDRrr:$addr, i16))]>;
+                  [(set IntRegs:$dst, (sextloadi16 ADDRrr:$addr))]>;
 def LDSHri : F3_2<3, 0b001010,
                   (ops IntRegs:$dst, MEMri:$addr),
                   "ldsh [$addr], $dst",
-                  [(set IntRegs:$dst, (sextload ADDRri:$addr, i16))]>;
+                  [(set IntRegs:$dst, (sextloadi16 ADDRri:$addr))]>;
 def LDUBrr : F3_1<3, 0b000001,
                   (ops IntRegs:$dst, MEMrr:$addr),
                   "ldub [$addr], $dst",
-                  [(set IntRegs:$dst, (zextload ADDRrr:$addr, i8))]>;
+                  [(set IntRegs:$dst, (zextloadi8 ADDRrr:$addr))]>;
 def LDUBri : F3_2<3, 0b000001,
                   (ops IntRegs:$dst, MEMri:$addr),
                   "ldub [$addr], $dst",
-                  [(set IntRegs:$dst, (zextload ADDRri:$addr, i8))]>;
+                  [(set IntRegs:$dst, (zextloadi8 ADDRri:$addr))]>;
 def LDUHrr : F3_1<3, 0b000010,
                   (ops IntRegs:$dst, MEMrr:$addr),
                   "lduh [$addr], $dst",
-                  [(set IntRegs:$dst, (zextload ADDRrr:$addr, i16))]>;
+                  [(set IntRegs:$dst, (zextloadi16 ADDRrr:$addr))]>;
 def LDUHri : F3_2<3, 0b000010,
                   (ops IntRegs:$dst, MEMri:$addr),
                   "lduh [$addr], $dst",
-                  [(set IntRegs:$dst, (zextload ADDRri:$addr, i16))]>;
+                  [(set IntRegs:$dst, (zextloadi16 ADDRri:$addr))]>;
 def LDrr   : F3_1<3, 0b000000,
                   (ops IntRegs:$dst, MEMrr:$addr),
                   "ld [$addr], $dst",
@@ -760,16 +760,16 @@
 def : Pat<(ret), (RETL)>;
 
 // Map integer extload's to zextloads.
-def : Pat<(i32 (extload ADDRrr:$src, i1)), (LDUBrr ADDRrr:$src)>;
-def : Pat<(i32 (extload ADDRri:$src, i1)), (LDUBri ADDRri:$src)>;
-def : Pat<(i32 (extload ADDRrr:$src, i8)), (LDUBrr ADDRrr:$src)>;
-def : Pat<(i32 (extload ADDRri:$src, i8)), (LDUBri ADDRri:$src)>;
-def : Pat<(i32 (extload ADDRrr:$src, i16)), (LDUHrr ADDRrr:$src)>;
-def : Pat<(i32 (extload ADDRri:$src, i16)), (LDUHri ADDRri:$src)>;
+def : Pat<(i32 (extloadi1 ADDRrr:$src)), (LDUBrr ADDRrr:$src)>;
+def : Pat<(i32 (extloadi1 ADDRri:$src)), (LDUBri ADDRri:$src)>;
+def : Pat<(i32 (extloadi8 ADDRrr:$src)), (LDUBrr ADDRrr:$src)>;
+def : Pat<(i32 (extloadi8 ADDRri:$src)), (LDUBri ADDRri:$src)>;
+def : Pat<(i32 (extloadi16 ADDRrr:$src)), (LDUHrr ADDRrr:$src)>;
+def : Pat<(i32 (extloadi16 ADDRri:$src)), (LDUHri ADDRri:$src)>;
 
 // zextload bool -> zextload byte
-def : Pat<(i32 (zextload ADDRrr:$src, i1)), (LDUBrr ADDRrr:$src)>;
-def : Pat<(i32 (zextload ADDRri:$src, i1)), (LDUBri ADDRri:$src)>;
+def : Pat<(i32 (zextloadi1 ADDRrr:$src)), (LDUBrr ADDRrr:$src)>;
+def : Pat<(i32 (zextloadi1 ADDRri:$src)), (LDUBri ADDRri:$src)>;
 
 // truncstore bool -> truncstore byte.
 def : Pat<(truncstore IntRegs:$src, ADDRrr:$addr, i1), 
diff --git a/lib/Target/TargetSelectionDAG.td b/lib/Target/TargetSelectionDAG.td
index 2a2bd17..6e9a695 100644
--- a/lib/Target/TargetSelectionDAG.td
+++ b/lib/Target/TargetSelectionDAG.td
@@ -164,12 +164,6 @@
   SDTCisPtrTy<1>  
 ]>;
 
-def SDTLoadX : SDTypeProfile<1, 4, [  // loadX
-  SDTCisPtrTy<1>, SDTCisVT<2, OtherVT>, SDTCisVT<3, OtherVT>, SDTCisVT<4, i32>
-]>;
-def SDTIntExtLoad : SDTypeProfile<1, 3, [  // extload, sextload, zextload
-  SDTCisInt<0>, SDTCisPtrTy<1>, SDTCisVT<2, OtherVT>, SDTCisVT<3, OtherVT>
-]>;
 def SDTTruncStore : SDTypeProfile<0, 4, [  // truncstore
   SDTCisPtrTy<1>, SDTCisVT<2, OtherVT>, SDTCisVT<3, OtherVT>
 ]>;
@@ -305,12 +299,10 @@
 def br         : SDNode<"ISD::BR"         , SDTBr,     [SDNPHasChain]>;
 def ret        : SDNode<"ISD::RET"        , SDTRet,    [SDNPHasChain]>;
 
-def load       : SDNode<"ISD::LOAD"       , SDTLoad,  [SDNPHasChain]>;
+// Do not use ld directly. Use load, extload, sextload, zextload (see below).
+def ld         : SDNode<"ISD::LOAD"       , SDTLoad,  [SDNPHasChain]>;
 def store      : SDNode<"ISD::STORE"      , SDTStore, [SDNPHasChain]>;
 
-// Do not use loadx directly. Use extload, sextload and zextload (see below)
-// which pass in a dummy srcvalue node which tblgen will skip over.
-def loadx      : SDNode<"ISD::LOADX"      , SDTLoadX,      [SDNPHasChain]>;
 def truncst    : SDNode<"ISD::TRUNCSTORE" , SDTTruncStore, [SDNPHasChain]>;
 
 def vector_shuffle : SDNode<"ISD::VECTOR_SHUFFLE", SDTVecShuffle, []>;
@@ -412,13 +404,79 @@
 def vnot_conv : PatFrag<(ops node:$in), (xor node:$in, immAllOnesV_bc)>;
 def ineg : PatFrag<(ops node:$in), (sub 0, node:$in)>;
 
+def load : PatFrag<(ops node:$ptr), (ld node:$ptr), [{
+  return ISD::isNON_EXTLoad(N);
+}]>;
+
 // extending load & truncstore fragments.
-def extload       : PatFrag<(ops node:$ptr, node:$vt),
-                            (loadx node:$ptr, srcvalue:$dummy, node:$vt, 0)>;
-def sextload      : PatFrag<(ops node:$ptr, node:$vt),
-                            (loadx node:$ptr, srcvalue:$dummy, node:$vt, 1)>;
-def zextload      : PatFrag<(ops node:$ptr, node:$vt),
-                            (loadx node:$ptr, srcvalue:$dummy, node:$vt, 2)>;
+def extloadi1  : PatFrag<(ops node:$ptr), (ld node:$ptr), [{
+  if (ISD::isEXTLoad(N))
+    return cast<LoadSDNode>(N)->getLoadVT() == MVT::i1;
+  return false;
+}]>;
+def extloadi8  : PatFrag<(ops node:$ptr), (ld node:$ptr), [{
+  if (ISD::isEXTLoad(N))
+    return cast<LoadSDNode>(N)->getLoadVT() == MVT::i8;
+  return false;
+}]>;
+def extloadi16 : PatFrag<(ops node:$ptr), (ld node:$ptr), [{
+  if (ISD::isEXTLoad(N))
+    return cast<LoadSDNode>(N)->getLoadVT() == MVT::i16;
+  return false;
+}]>;
+def extloadi32 : PatFrag<(ops node:$ptr), (ld node:$ptr), [{
+  if (ISD::isEXTLoad(N))
+    return cast<LoadSDNode>(N)->getLoadVT() == MVT::i32;
+  return false;
+}]>;
+def extloadf32 : PatFrag<(ops node:$ptr), (ld node:$ptr), [{
+  if (ISD::isEXTLoad(N))
+    return cast<LoadSDNode>(N)->getLoadVT() == MVT::f32;
+  return false;
+}]>;
+
+def sextloadi1 : PatFrag<(ops node:$ptr), (ld node:$ptr), [{
+  if (ISD::isSEXTLoad(N))
+    return cast<LoadSDNode>(N)->getLoadVT() == MVT::i1;
+  return false;
+}]>;
+def sextloadi8 : PatFrag<(ops node:$ptr), (ld node:$ptr), [{
+  if (ISD::isSEXTLoad(N))
+    return cast<LoadSDNode>(N)->getLoadVT() == MVT::i8;
+  return false;
+}]>;
+def sextloadi16 : PatFrag<(ops node:$ptr), (ld node:$ptr), [{
+  if (ISD::isSEXTLoad(N))
+    return cast<LoadSDNode>(N)->getLoadVT() == MVT::i16;
+  return false;
+}]>;
+def sextloadi32 : PatFrag<(ops node:$ptr), (ld node:$ptr), [{
+  if (ISD::isSEXTLoad(N))
+    return cast<LoadSDNode>(N)->getLoadVT() == MVT::i32;
+  return false;
+}]>;
+
+def zextloadi1 : PatFrag<(ops node:$ptr), (ld node:$ptr), [{
+  if (ISD::isZEXTLoad(N))
+    return cast<LoadSDNode>(N)->getLoadVT() == MVT::i1;
+  return false;
+}]>;
+def zextloadi8 : PatFrag<(ops node:$ptr), (ld node:$ptr), [{
+  if (ISD::isZEXTLoad(N))
+    return cast<LoadSDNode>(N)->getLoadVT() == MVT::i8;
+  return false;
+}]>;
+def zextloadi16 : PatFrag<(ops node:$ptr), (ld node:$ptr), [{
+  if (ISD::isZEXTLoad(N))
+    return cast<LoadSDNode>(N)->getLoadVT() == MVT::i16;
+  return false;
+}]>;
+def zextloadi32 : PatFrag<(ops node:$ptr), (ld node:$ptr), [{
+  if (ISD::isZEXTLoad(N))
+    return cast<LoadSDNode>(N)->getLoadVT() == MVT::i32;
+  return false;
+}]>;
+
 def truncstore    : PatFrag<(ops node:$val, node:$ptr, node:$vt),
                             (truncst node:$val, node:$ptr, srcvalue:$dummy, 
                             node:$vt)>;
diff --git a/lib/Target/X86/X86ISelDAGToDAG.cpp b/lib/Target/X86/X86ISelDAGToDAG.cpp
index 785af30..d517256 100644
--- a/lib/Target/X86/X86ISelDAGToDAG.cpp
+++ b/lib/Target/X86/X86ISelDAGToDAG.cpp
@@ -346,9 +346,9 @@
       case ISD::ADDE: {
         SDOperand N10 = N1.getOperand(0);
         SDOperand N11 = N1.getOperand(1);
-        if (N10.Val->getOpcode() == ISD::LOAD)
+        if (ISD::isNON_EXTLoad(N10.Val))
           RModW = true;
-        else if (N11.Val->getOpcode() == ISD::LOAD) {
+        else if (ISD::isNON_EXTLoad(N11.Val)) {
           RModW = true;
           std::swap(N10, N11);
         }
@@ -370,7 +370,7 @@
       case X86ISD::SHLD:
       case X86ISD::SHRD: {
         SDOperand N10 = N1.getOperand(0);
-        if (N10.Val->getOpcode() == ISD::LOAD)
+        if (ISD::isNON_EXTLoad(N10.Val))
           RModW = N10.Val->isOperand(Chain.Val) && N10.hasOneUse() &&
             (N10.getOperand(1) == N2) &&
             (N10.Val->getValueType(0) == N1.getValueType());
@@ -806,7 +806,7 @@
 bool X86DAGToDAGISel::TryFoldLoad(SDOperand P, SDOperand N,
                                   SDOperand &Base, SDOperand &Scale,
                                   SDOperand &Index, SDOperand &Disp) {
-  if (N.getOpcode() == ISD::LOAD &&
+  if (ISD::isNON_EXTLoad(N.Val) &&
       N.hasOneUse() &&
       CanBeFoldedBy(N.Val, P.Val))
     return SelectAddr(N.getOperand(1), Base, Scale, Index, Disp);
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index cd8fba9..7abfc58 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -490,8 +490,7 @@
       // Create the frame index object for this incoming parameter...
       int FI = MFI->CreateFixedObject(ObjSize, ArgOffset);
       SDOperand FIN = DAG.getFrameIndex(FI, getPointerTy());
-      ArgValue = DAG.getLoad(Op.Val->getValueType(i), Root, FIN,
-                             DAG.getSrcValue(NULL));
+      ArgValue = DAG.getLoad(Op.Val->getValueType(i), Root, FIN, NULL, 0);
       ArgValues.push_back(ArgValue);
       ArgOffset += ArgIncrement;   // Move on to the next argument...
     }
@@ -763,8 +762,7 @@
       Ops.push_back(DAG.getValueType(RetVT));
       Ops.push_back(InFlag);
       Chain = DAG.getNode(X86ISD::FST, Tys, &Ops[0], Ops.size());
-      RetVal = DAG.getLoad(RetVT, Chain, StackSlot,
-                           DAG.getSrcValue(NULL));
+      RetVal = DAG.getLoad(RetVT, Chain, StackSlot, NULL, 0);
       Chain = RetVal.getValue(1);
     }
 
@@ -963,8 +961,7 @@
       // parameter.
       int FI = MFI->CreateFixedObject(ObjSize, ArgOffset);
       SDOperand FIN = DAG.getFrameIndex(FI, getPointerTy());
-      ArgValue = DAG.getLoad(Op.Val->getValueType(i), Root, FIN,
-                             DAG.getSrcValue(NULL));
+      ArgValue = DAG.getLoad(Op.Val->getValueType(i), Root, FIN, NULL, 0);
       ArgOffset += ArgIncrement;   // Move on to the next argument.
     }
 
@@ -1470,11 +1467,10 @@
       SDOperand FIN = DAG.getFrameIndex(FI, getPointerTy());
       if (ObjectVT == MVT::i64 && ObjIntRegs) {
         SDOperand ArgValue2 = DAG.getLoad(Op.Val->getValueType(i), Root, FIN,
-                                          DAG.getSrcValue(NULL));
+                                          NULL, 0);
         ArgValue = DAG.getNode(ISD::BUILD_PAIR, MVT::i64, ArgValue, ArgValue2);
       } else
-        ArgValue = DAG.getLoad(Op.Val->getValueType(i), Root, FIN,
-                               DAG.getSrcValue(NULL));
+        ArgValue = DAG.getLoad(Op.Val->getValueType(i), Root, FIN, NULL, 0);
       ArgOffset += ArgIncrement;   // Move on to the next argument.
     }
 
@@ -1800,8 +1796,7 @@
       Ops.push_back(DAG.getValueType(RetVT));
       Ops.push_back(InFlag);
       Chain = DAG.getNode(X86ISD::FST, Tys, &Ops[0], Ops.size());
-      RetVal = DAG.getLoad(RetVT, Chain, StackSlot,
-                           DAG.getSrcValue(NULL));
+      RetVal = DAG.getLoad(RetVT, Chain, StackSlot, NULL, 0);
       Chain = RetVal.getValue(1);
     }
 
@@ -1880,8 +1875,7 @@
     // Create the frame index object for this incoming parameter...
     int FI = MFI->CreateFixedObject(ObjSize, ArgOffset);
     SDOperand FIN = DAG.getFrameIndex(FI, getPointerTy());
-    ArgValue = DAG.getLoad(Op.Val->getValueType(i), Root, FIN,
-                           DAG.getSrcValue(NULL));
+    ArgValue = DAG.getLoad(Op.Val->getValueType(i), Root, FIN, NULL, 0);
     ArgValues.push_back(ArgValue);
     ArgOffset += ArgIncrement;   // Move on to the next argument...
   }
@@ -2086,8 +2080,7 @@
       Ops.push_back(DAG.getValueType(RetVT));
       Ops.push_back(InFlag);
       Chain = DAG.getNode(X86ISD::FST, Tys, &Ops[0], Ops.size());
-      RetVal = DAG.getLoad(RetVT, Chain, StackSlot,
-                           DAG.getSrcValue(NULL));
+      RetVal = DAG.getLoad(RetVT, Chain, StackSlot, NULL, 0);
       Chain = RetVal.getValue(1);
     }
 
@@ -2251,11 +2244,10 @@
       SDOperand FIN = DAG.getFrameIndex(FI, getPointerTy());
       if (ObjectVT == MVT::i64 && ObjIntRegs) {
         SDOperand ArgValue2 = DAG.getLoad(Op.Val->getValueType(i), Root, FIN,
-                                          DAG.getSrcValue(NULL));
+                                          NULL, 0);
         ArgValue = DAG.getNode(ISD::BUILD_PAIR, MVT::i64, ArgValue, ArgValue2);
       } else
-        ArgValue = DAG.getLoad(Op.Val->getValueType(i), Root, FIN,
-                               DAG.getSrcValue(NULL));
+        ArgValue = DAG.getLoad(Op.Val->getValueType(i), Root, FIN, NULL, 0);
       ArgOffset += ArgIncrement;   // Move on to the next argument.
     }
 
@@ -2329,7 +2321,7 @@
     if (!isFrameAddress)
       // Just load the return address
       Result = DAG.getLoad(getPointerTy(), DAG.getEntryNode(), RetAddrFI,
-                           DAG.getSrcValue(NULL));
+                           NULL, 0);
     else
       Result = DAG.getNode(ISD::SUB, getPointerTy(), RetAddrFI,
                            DAG.getConstant(4, getPointerTy()));
@@ -3051,7 +3043,7 @@
 static inline bool isScalarLoadToVector(SDNode *N) {
   if (N->getOpcode() == ISD::SCALAR_TO_VECTOR) {
     N = N->getOperand(0).Val;
-    return (N->getOpcode() == ISD::LOAD);
+    return ISD::isNON_EXTLoad(N);
   }
   return false;
 }
@@ -3062,7 +3054,7 @@
 /// half of V2 (and in order). And since V1 will become the source of the
 /// MOVLP, it must be either a vector load or a scalar load to vector.
 static bool ShouldXformToMOVLP(SDNode *V1, SDNode *Mask) {
-  if (V1->getOpcode() != ISD::LOAD && !isScalarLoadToVector(V1))
+  if (!ISD::isNON_EXTLoad(V1) && !isScalarLoadToVector(V1))
     return false;
 
   unsigned NumElems = Mask->getNumOperands();
@@ -3809,10 +3801,11 @@
       // Use two pinsrw instructions to insert a 32 bit value.
       Idx <<= 1;
       if (MVT::isFloatingPoint(N1.getValueType())) {
-        if (N1.getOpcode() == ISD::LOAD) {
+        if (ISD::isNON_EXTLoad(N1.Val)) {
           // Just load directly from f32mem to GR32.
-          N1 = DAG.getLoad(MVT::i32, N1.getOperand(0), N1.getOperand(1),
-                           N1.getOperand(2));
+          LoadSDNode *LD = cast<LoadSDNode>(N1);
+          N1 = DAG.getLoad(MVT::i32, LD->getChain(), LD->getBasePtr(),
+                           LD->getSrcValue(), LD->getSrcValueOffset());
         } else {
           N1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, MVT::v4f32, N1);
           N1 = DAG.getNode(ISD::BIT_CONVERT, MVT::v4i32, N1);
@@ -3883,14 +3876,11 @@
     // not the GV offset field.
     if (getTargetMachine().getRelocationModel() != Reloc::Static &&
         DarwinGVRequiresExtraLoad(GV))
-      Result = DAG.getLoad(getPointerTy(), DAG.getEntryNode(),
-                           Result, DAG.getSrcValue(NULL));
+      Result = DAG.getLoad(getPointerTy(), DAG.getEntryNode(), Result, NULL, 0);
   } else if (Subtarget->isTargetCygwin() || Subtarget->isTargetWindows()) {
-    // FIXME: What's about PIC?
-    if (WindowsGVRequiresExtraLoad(GV)) {
-      Result = DAG.getLoad(getPointerTy(), DAG.getEntryNode(),
-                           Result, DAG.getSrcValue(NULL));      
-    }    
+    // FIXME: What about PIC?
+    if (WindowsGVRequiresExtraLoad(GV))
+      Result = DAG.getLoad(getPointerTy(), DAG.getEntryNode(), Result, NULL, 0);
   }
   
 
@@ -4028,8 +4018,7 @@
     Ops.push_back(DAG.getValueType(Op.getValueType()));
     Ops.push_back(InFlag);
     Chain = DAG.getNode(X86ISD::FST, Tys, &Ops[0], Ops.size());
-    Result = DAG.getLoad(Op.getValueType(), Chain, StackSlot,
-                         DAG.getSrcValue(NULL));
+    Result = DAG.getLoad(Op.getValueType(), Chain, StackSlot, NULL, 0);
   }
 
   return Result;
@@ -4079,8 +4068,7 @@
   SDOperand FIST = DAG.getNode(Opc, MVT::Other, &Ops[0], Ops.size());
 
   // Load the result.
-  return DAG.getLoad(Op.getValueType(), FIST, StackSlot,
-                     DAG.getSrcValue(NULL));
+  return DAG.getLoad(Op.getValueType(), FIST, StackSlot, NULL, 0);
 }
 
 SDOperand X86TargetLowering::LowerFABS(SDOperand Op, SelectionDAG &DAG) {
@@ -4364,7 +4352,7 @@
         SDOperand Chain = Op.getOperand(0);
         SDOperand Value = Op.getOperand(1);
 
-        if (Value.getOpcode() == ISD::LOAD &&
+        if (ISD::isNON_EXTLoad(Value.Val) &&
             (Chain == Value.getValue(1) || Chain == Value.getOperand(0))) {
           Chain  = Value.getOperand(0);
           MemLoc = Value.getOperand(1);
@@ -4708,7 +4696,7 @@
       Value = DAG.getLoad(MVT::i32, Chain,
                           DAG.getNode(ISD::ADD, SrcVT, SrcAddr,
                                       DAG.getConstant(Offset, SrcVT)),
-                          DAG.getSrcValue(NULL));
+                          NULL, 0);
       Chain = Value.getValue(1);
       Chain = DAG.getStore(Chain, Value,
                            DAG.getNode(ISD::ADD, DstVT, DstAddr,
@@ -4721,7 +4709,7 @@
       Value = DAG.getLoad(MVT::i16, Chain,
                           DAG.getNode(ISD::ADD, SrcVT, SrcAddr,
                                       DAG.getConstant(Offset, SrcVT)),
-                          DAG.getSrcValue(NULL));
+                          NULL, 0);
       Chain = Value.getValue(1);
       Chain = DAG.getStore(Chain, Value,
                            DAG.getNode(ISD::ADD, DstVT, DstAddr,
@@ -4735,7 +4723,7 @@
       Value = DAG.getLoad(MVT::i8, Chain,
                           DAG.getNode(ISD::ADD, SrcVT, SrcAddr,
                                       DAG.getConstant(Offset, SrcVT)),
-                          DAG.getSrcValue(NULL));
+                          NULL, 0);
       Chain = Value.getValue(1);
       Chain = DAG.getStore(Chain, Value,
                            DAG.getNode(ISD::ADD, DstVT, DstAddr,
@@ -5328,7 +5316,7 @@
     } else {
       SDOperand Arg =
         getShuffleScalarElt(N, cast<ConstantSDNode>(Idx)->getValue(), DAG);
-      if (!Arg.Val || Arg.getOpcode() != ISD::LOAD)
+      if (!Arg.Val || !ISD::isNON_EXTLoad(Arg.Val))
         return SDOperand();
       if (!Base)
         Base = Arg.Val;
@@ -5339,10 +5327,11 @@
   }
 
   bool isAlign16 = isBaseAlignment16(Base->getOperand(1).Val, MFI, Subtarget);
-  if (isAlign16)
-    return DAG.getLoad(VT, Base->getOperand(0), Base->getOperand(1),
-                       Base->getOperand(2));
-  else {
+  if (isAlign16) {
+    LoadSDNode *LD = cast<LoadSDNode>(Base);
+    return DAG.getLoad(VT, LD->getChain(), LD->getBasePtr(), LD->getSrcValue(),
+                       LD->getSrcValueOffset());
+  } else {
     // Just use movups, it's shorter.
     std::vector<MVT::ValueType> Tys;
     Tys.push_back(MVT::v4f32);
diff --git a/lib/Target/X86/X86InstrFPStack.td b/lib/Target/X86/X86InstrFPStack.td
index 3283ed6..c508987 100644
--- a/lib/Target/X86/X86InstrFPStack.td
+++ b/lib/Target/X86/X86InstrFPStack.td
@@ -66,7 +66,7 @@
   return N->isExactlyValue(-1.0);
 }]>;
 
-def extloadf64f32  : PatFrag<(ops node:$ptr), (f64 (extload node:$ptr, f32))>;
+def extloadf64f32  : PatFrag<(ops node:$ptr), (f64 (extloadf32 node:$ptr))>;
 
 // Some 'special' instructions
 let usesCustomDAGSchedInserter = 1 in {  // Expanded by the scheduler.
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index 6798ad8..27c8434 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -297,25 +297,25 @@
 def loadf32 : PatFrag<(ops node:$ptr), (f32 (load node:$ptr))>;
 def loadf64 : PatFrag<(ops node:$ptr), (f64 (load node:$ptr))>;
 
-def sextloadi16i1  : PatFrag<(ops node:$ptr), (i16 (sextload node:$ptr, i1))>;
-def sextloadi32i1  : PatFrag<(ops node:$ptr), (i32 (sextload node:$ptr, i1))>;
-def sextloadi16i8  : PatFrag<(ops node:$ptr), (i16 (sextload node:$ptr, i8))>;
-def sextloadi32i8  : PatFrag<(ops node:$ptr), (i32 (sextload node:$ptr, i8))>;
-def sextloadi32i16 : PatFrag<(ops node:$ptr), (i32 (sextload node:$ptr, i16))>;
+def sextloadi16i1  : PatFrag<(ops node:$ptr), (i16 (sextloadi1 node:$ptr))>;
+def sextloadi32i1  : PatFrag<(ops node:$ptr), (i32 (sextloadi1 node:$ptr))>;
+def sextloadi16i8  : PatFrag<(ops node:$ptr), (i16 (sextloadi8 node:$ptr))>;
+def sextloadi32i8  : PatFrag<(ops node:$ptr), (i32 (sextloadi8 node:$ptr))>;
+def sextloadi32i16 : PatFrag<(ops node:$ptr), (i32 (sextloadi16 node:$ptr))>;
 
-def zextloadi8i1   : PatFrag<(ops node:$ptr), (i8  (zextload node:$ptr, i1))>;
-def zextloadi16i1  : PatFrag<(ops node:$ptr), (i16 (zextload node:$ptr, i1))>;
-def zextloadi32i1  : PatFrag<(ops node:$ptr), (i32 (zextload node:$ptr, i1))>;
-def zextloadi16i8  : PatFrag<(ops node:$ptr), (i16 (zextload node:$ptr, i8))>;
-def zextloadi32i8  : PatFrag<(ops node:$ptr), (i32 (zextload node:$ptr, i8))>;
-def zextloadi32i16 : PatFrag<(ops node:$ptr), (i32 (zextload node:$ptr, i16))>;
+def zextloadi8i1   : PatFrag<(ops node:$ptr), (i8  (zextloadi1 node:$ptr))>;
+def zextloadi16i1  : PatFrag<(ops node:$ptr), (i16 (zextloadi1 node:$ptr))>;
+def zextloadi32i1  : PatFrag<(ops node:$ptr), (i32 (zextloadi1 node:$ptr))>;
+def zextloadi16i8  : PatFrag<(ops node:$ptr), (i16 (zextloadi8 node:$ptr))>;
+def zextloadi32i8  : PatFrag<(ops node:$ptr), (i32 (zextloadi8 node:$ptr))>;
+def zextloadi32i16 : PatFrag<(ops node:$ptr), (i32 (zextloadi16 node:$ptr))>;
 
-def extloadi8i1    : PatFrag<(ops node:$ptr), (i8  (extload node:$ptr, i1))>;
-def extloadi16i1   : PatFrag<(ops node:$ptr), (i16 (extload node:$ptr, i1))>;
-def extloadi32i1   : PatFrag<(ops node:$ptr), (i32 (extload node:$ptr, i1))>;
-def extloadi16i8   : PatFrag<(ops node:$ptr), (i16 (extload node:$ptr, i8))>;
-def extloadi32i8   : PatFrag<(ops node:$ptr), (i32 (extload node:$ptr, i8))>;
-def extloadi32i16  : PatFrag<(ops node:$ptr), (i32 (extload node:$ptr, i16))>;
+def extloadi8i1    : PatFrag<(ops node:$ptr), (i8  (extloadi1 node:$ptr))>;
+def extloadi16i1   : PatFrag<(ops node:$ptr), (i16 (extloadi1 node:$ptr))>;
+def extloadi32i1   : PatFrag<(ops node:$ptr), (i32 (extloadi1 node:$ptr))>;
+def extloadi16i8   : PatFrag<(ops node:$ptr), (i16 (extloadi8 node:$ptr))>;
+def extloadi32i8   : PatFrag<(ops node:$ptr), (i32 (extloadi8 node:$ptr))>;
+def extloadi32i16  : PatFrag<(ops node:$ptr), (i32 (extloadi16 node:$ptr))>;
 
 //===----------------------------------------------------------------------===//
 // Instruction templates...
diff --git a/lib/Target/X86/X86InstrSSE.td b/lib/Target/X86/X86InstrSSE.td
index 55f4528..2e85167 100644
--- a/lib/Target/X86/X86InstrSSE.td
+++ b/lib/Target/X86/X86InstrSSE.td
@@ -467,7 +467,7 @@
                 Requires<[HasSSE2]>;
 def CVTSS2SDrm: I<0x5A, MRMSrcMem, (ops FR64:$dst, f32mem:$src),
                  "cvtss2sd {$src, $dst|$dst, $src}",
-                 [(set FR64:$dst, (extload addr:$src, f32))]>, XS,
+                 [(set FR64:$dst, (extloadf32 addr:$src))]>, XS,
                 Requires<[HasSSE2]>;
 
 // Match intrinsics which expect XMM operand(s).
diff --git a/lib/Target/X86/X86InstrX86-64.td b/lib/Target/X86/X86InstrX86-64.td
index 027eb17..db060e6 100644
--- a/lib/Target/X86/X86InstrX86-64.td
+++ b/lib/Target/X86/X86InstrX86-64.td
@@ -84,20 +84,20 @@
   return (int64_t)N->getValue() == (int8_t)N->getValue();
 }]>;
 
-def sextloadi64i1  : PatFrag<(ops node:$ptr), (i64 (sextload node:$ptr, i1))>;
-def sextloadi64i8  : PatFrag<(ops node:$ptr), (i64 (sextload node:$ptr, i8))>;
-def sextloadi64i16 : PatFrag<(ops node:$ptr), (i64 (sextload node:$ptr, i16))>;
-def sextloadi64i32 : PatFrag<(ops node:$ptr), (i64 (sextload node:$ptr, i32))>;
+def sextloadi64i1  : PatFrag<(ops node:$ptr), (i64 (sextloadi1 node:$ptr))>;
+def sextloadi64i8  : PatFrag<(ops node:$ptr), (i64 (sextloadi8 node:$ptr))>;
+def sextloadi64i16 : PatFrag<(ops node:$ptr), (i64 (sextloadi16 node:$ptr))>;
+def sextloadi64i32 : PatFrag<(ops node:$ptr), (i64 (sextloadi32 node:$ptr))>;
 
-def zextloadi64i1  : PatFrag<(ops node:$ptr), (i64 (zextload node:$ptr, i1))>;
-def zextloadi64i8  : PatFrag<(ops node:$ptr), (i64 (zextload node:$ptr, i8))>;
-def zextloadi64i16 : PatFrag<(ops node:$ptr), (i64 (zextload node:$ptr, i16))>;
-def zextloadi64i32 : PatFrag<(ops node:$ptr), (i64 (zextload node:$ptr, i32))>;
+def zextloadi64i1  : PatFrag<(ops node:$ptr), (i64 (zextloadi1 node:$ptr))>;
+def zextloadi64i8  : PatFrag<(ops node:$ptr), (i64 (zextloadi8 node:$ptr))>;
+def zextloadi64i16 : PatFrag<(ops node:$ptr), (i64 (zextloadi16 node:$ptr))>;
+def zextloadi64i32 : PatFrag<(ops node:$ptr), (i64 (zextloadi32 node:$ptr))>;
 
-def extloadi64i1   : PatFrag<(ops node:$ptr), (i64 (extload node:$ptr, i1))>;
-def extloadi64i8   : PatFrag<(ops node:$ptr), (i64 (extload node:$ptr, i8))>;
-def extloadi64i16  : PatFrag<(ops node:$ptr), (i64 (extload node:$ptr, i16))>;
-def extloadi64i32  : PatFrag<(ops node:$ptr), (i64 (extload node:$ptr, i32))>;
+def extloadi64i1   : PatFrag<(ops node:$ptr), (i64 (extloadi1 node:$ptr))>;
+def extloadi64i8   : PatFrag<(ops node:$ptr), (i64 (extloadi8 node:$ptr))>;
+def extloadi64i16  : PatFrag<(ops node:$ptr), (i64 (extloadi16 node:$ptr))>;
+def extloadi64i32  : PatFrag<(ops node:$ptr), (i64 (extloadi32 node:$ptr))>;
 
 //===----------------------------------------------------------------------===//
 // Instruction list...