Massive rewrite of MMX:  
The x86_mmx type is used for MMX intrinsics, parameters and
return values where these use MMX registers, and is also
supported in load, store, and bitcast.

Only the above operations generate MMX instructions, and optimizations
do not operate on or produce MMX intrinsics. 

MMX-sized vectors <2 x i32> etc. are lowered to XMM or split into
smaller pieces.  Optimizations may occur on these forms and the
result casted back to x86_mmx, provided the result feeds into a
previous existing x86_mmx operation.

The point of all this is prevent optimizations from introducing
MMX operations, which is unsafe due to the EMMS problem.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115243 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 55daf76..7da9ad6 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -218,11 +218,8 @@
     setOperationAction(ISD::BIT_CONVERT      , MVT::i32  , Expand);
     if (Subtarget->is64Bit()) {
       setOperationAction(ISD::BIT_CONVERT    , MVT::f64  , Expand);
-      // Without SSE, i64->f64 goes through memory; i64->MMX is Legal.
-      if (Subtarget->hasMMX() && !DisableMMX)
-        setOperationAction(ISD::BIT_CONVERT    , MVT::i64  , Custom);
-      else 
-        setOperationAction(ISD::BIT_CONVERT    , MVT::i64  , Expand);
+      // Without SSE, i64->f64 goes through memory.
+      setOperationAction(ISD::BIT_CONVERT    , MVT::i64  , Expand);
     }
   }
 
@@ -615,91 +612,41 @@
   // with -msoft-float, disable use of MMX as well.
   if (!UseSoftFloat && !DisableMMX && Subtarget->hasMMX()) {
     addRegisterClass(MVT::x86mmx, X86::VR64RegisterClass, false);
-
-    // FIXME: Remove the rest of this stuff.
-    addRegisterClass(MVT::v8i8,  X86::VR64RegisterClass, false);
-    addRegisterClass(MVT::v4i16, X86::VR64RegisterClass, false);
-    addRegisterClass(MVT::v2i32, X86::VR64RegisterClass, false);
-    
-    addRegisterClass(MVT::v1i64, X86::VR64RegisterClass, false);
-
-    setOperationAction(ISD::ADD,                MVT::v8i8,  Legal);
-    setOperationAction(ISD::ADD,                MVT::v4i16, Legal);
-    setOperationAction(ISD::ADD,                MVT::v2i32, Legal);
-    setOperationAction(ISD::ADD,                MVT::v1i64, Legal);
-
-    setOperationAction(ISD::SUB,                MVT::v8i8,  Legal);
-    setOperationAction(ISD::SUB,                MVT::v4i16, Legal);
-    setOperationAction(ISD::SUB,                MVT::v2i32, Legal);
-    setOperationAction(ISD::SUB,                MVT::v1i64, Legal);
-
-    setOperationAction(ISD::MULHS,              MVT::v4i16, Legal);
-    setOperationAction(ISD::MUL,                MVT::v4i16, Legal);
-
-    setOperationAction(ISD::AND,                MVT::v8i8,  Promote);
-    AddPromotedToType (ISD::AND,                MVT::v8i8,  MVT::v1i64);
-    setOperationAction(ISD::AND,                MVT::v4i16, Promote);
-    AddPromotedToType (ISD::AND,                MVT::v4i16, MVT::v1i64);
-    setOperationAction(ISD::AND,                MVT::v2i32, Promote);
-    AddPromotedToType (ISD::AND,                MVT::v2i32, MVT::v1i64);
-    setOperationAction(ISD::AND,                MVT::v1i64, Legal);
-
-    setOperationAction(ISD::OR,                 MVT::v8i8,  Promote);
-    AddPromotedToType (ISD::OR,                 MVT::v8i8,  MVT::v1i64);
-    setOperationAction(ISD::OR,                 MVT::v4i16, Promote);
-    AddPromotedToType (ISD::OR,                 MVT::v4i16, MVT::v1i64);
-    setOperationAction(ISD::OR,                 MVT::v2i32, Promote);
-    AddPromotedToType (ISD::OR,                 MVT::v2i32, MVT::v1i64);
-    setOperationAction(ISD::OR,                 MVT::v1i64, Legal);
-
-    setOperationAction(ISD::XOR,                MVT::v8i8,  Promote);
-    AddPromotedToType (ISD::XOR,                MVT::v8i8,  MVT::v1i64);
-    setOperationAction(ISD::XOR,                MVT::v4i16, Promote);
-    AddPromotedToType (ISD::XOR,                MVT::v4i16, MVT::v1i64);
-    setOperationAction(ISD::XOR,                MVT::v2i32, Promote);
-    AddPromotedToType (ISD::XOR,                MVT::v2i32, MVT::v1i64);
-    setOperationAction(ISD::XOR,                MVT::v1i64, Legal);
-
-    setOperationAction(ISD::LOAD,               MVT::v8i8,  Promote);
-    AddPromotedToType (ISD::LOAD,               MVT::v8i8,  MVT::v1i64);
-    setOperationAction(ISD::LOAD,               MVT::v4i16, Promote);
-    AddPromotedToType (ISD::LOAD,               MVT::v4i16, MVT::v1i64);
-    setOperationAction(ISD::LOAD,               MVT::v2i32, Promote);
-    AddPromotedToType (ISD::LOAD,               MVT::v2i32, MVT::v1i64);
-    setOperationAction(ISD::LOAD,               MVT::v1i64, Legal);
-
-    setOperationAction(ISD::BUILD_VECTOR,       MVT::v8i8,  Custom);
-    setOperationAction(ISD::BUILD_VECTOR,       MVT::v4i16, Custom);
-    setOperationAction(ISD::BUILD_VECTOR,       MVT::v2i32, Custom);
-    setOperationAction(ISD::BUILD_VECTOR,       MVT::v1i64, Custom);
-
-    setOperationAction(ISD::VECTOR_SHUFFLE,     MVT::v8i8,  Custom);
-    setOperationAction(ISD::VECTOR_SHUFFLE,     MVT::v4i16, Custom);
-    setOperationAction(ISD::VECTOR_SHUFFLE,     MVT::v2i32, Custom);
-    setOperationAction(ISD::VECTOR_SHUFFLE,     MVT::v1i64, Custom);
-
-    setOperationAction(ISD::SCALAR_TO_VECTOR,   MVT::v8i8,  Custom);
-    setOperationAction(ISD::SCALAR_TO_VECTOR,   MVT::v4i16, Custom);
-    setOperationAction(ISD::SCALAR_TO_VECTOR,   MVT::v1i64, Custom);
-
-    setOperationAction(ISD::INSERT_VECTOR_ELT,  MVT::v4i16, Custom);
-
-    setOperationAction(ISD::SELECT,             MVT::v8i8, Promote);
-    setOperationAction(ISD::SELECT,             MVT::v4i16, Promote);
-    setOperationAction(ISD::SELECT,             MVT::v2i32, Promote);
-    setOperationAction(ISD::SELECT,             MVT::v1i64, Custom);
-    setOperationAction(ISD::VSETCC,             MVT::v8i8, Custom);
-    setOperationAction(ISD::VSETCC,             MVT::v4i16, Custom);
-    setOperationAction(ISD::VSETCC,             MVT::v2i32, Custom);
-
-    if (!X86ScalarSSEf64 && Subtarget->is64Bit()) {
-      setOperationAction(ISD::BIT_CONVERT,        MVT::v8i8,  Custom);
-      setOperationAction(ISD::BIT_CONVERT,        MVT::v4i16, Custom);
-      setOperationAction(ISD::BIT_CONVERT,        MVT::v2i32, Custom);
-      setOperationAction(ISD::BIT_CONVERT,        MVT::v1i64, Custom);
-    }
+    // No operations on x86mmx supported, everything uses intrinsics.
   }
 
+  // MMX-sized vectors (other than x86mmx) are expected to be expanded
+  // into smaller operations.
+  setOperationAction(ISD::MULHS,              MVT::v8i8,  Expand);
+  setOperationAction(ISD::MULHS,              MVT::v4i16, Expand);
+  setOperationAction(ISD::MULHS,              MVT::v2i32, Expand);
+  setOperationAction(ISD::MULHS,              MVT::v1i64, Expand);
+  setOperationAction(ISD::AND,                MVT::v8i8,  Expand);
+  setOperationAction(ISD::AND,                MVT::v4i16, Expand);
+  setOperationAction(ISD::AND,                MVT::v2i32, Expand);
+  setOperationAction(ISD::AND,                MVT::v1i64, Expand);
+  setOperationAction(ISD::OR,                 MVT::v8i8,  Expand);
+  setOperationAction(ISD::OR,                 MVT::v4i16, Expand);
+  setOperationAction(ISD::OR,                 MVT::v2i32, Expand);
+  setOperationAction(ISD::OR,                 MVT::v1i64, Expand);
+  setOperationAction(ISD::XOR,                MVT::v8i8,  Expand);
+  setOperationAction(ISD::XOR,                MVT::v4i16, Expand);
+  setOperationAction(ISD::XOR,                MVT::v2i32, Expand);
+  setOperationAction(ISD::XOR,                MVT::v1i64, Expand);
+  setOperationAction(ISD::SCALAR_TO_VECTOR,   MVT::v8i8,  Expand);
+  setOperationAction(ISD::SCALAR_TO_VECTOR,   MVT::v4i16, Expand);
+  setOperationAction(ISD::SCALAR_TO_VECTOR,   MVT::v2i32, Expand);
+  setOperationAction(ISD::SCALAR_TO_VECTOR,   MVT::v1i64, Expand);
+  setOperationAction(ISD::INSERT_VECTOR_ELT,  MVT::v1i64, Expand);
+  setOperationAction(ISD::SELECT,             MVT::v8i8,  Expand);
+  setOperationAction(ISD::SELECT,             MVT::v4i16, Expand);
+  setOperationAction(ISD::SELECT,             MVT::v2i32, Expand);
+  setOperationAction(ISD::SELECT,             MVT::v1i64, Expand);
+  setOperationAction(ISD::BIT_CONVERT,        MVT::v8i8,  Expand);
+  setOperationAction(ISD::BIT_CONVERT,        MVT::v4i16, Expand);
+  setOperationAction(ISD::BIT_CONVERT,        MVT::v2i32, Expand);
+  setOperationAction(ISD::BIT_CONVERT,        MVT::v1i64, Expand);
+
   if (!UseSoftFloat && Subtarget->hasSSE1()) {
     addRegisterClass(MVT::v4f32, X86::VR128RegisterClass);
 
@@ -821,10 +768,6 @@
 
     setOperationAction(ISD::FP_TO_SINT,         MVT::v4i32, Legal);
     setOperationAction(ISD::SINT_TO_FP,         MVT::v4i32, Legal);
-    if (!DisableMMX && Subtarget->hasMMX()) {
-      setOperationAction(ISD::FP_TO_SINT,         MVT::v2i32, Custom);
-      setOperationAction(ISD::SINT_TO_FP,         MVT::v2i32, Custom);
-    }
   }
 
   if (Subtarget->hasSSE41()) {
@@ -1210,8 +1153,7 @@
     RRC = (Subtarget->is64Bit()
            ? X86::GR64RegisterClass : X86::GR32RegisterClass);
     break;
-  case MVT::v8i8: case MVT::v4i16:
-  case MVT::v2i32: case MVT::v1i64: 
+  case MVT::x86mmx:
     RRC = X86::VR64RegisterClass;
     break;
   case MVT::f32: case MVT::f64:
@@ -1345,12 +1287,11 @@
     // 64-bit vector (MMX) values are returned in XMM0 / XMM1 except for v1i64
     // which is returned in RAX / RDX.
     if (Subtarget->is64Bit()) {
-      if (ValVT.isVector() && ValVT.getSizeInBits() == 64) {
-        ValToCopy = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::i64, ValToCopy);
+      if (ValVT == MVT::x86mmx) {
         if (VA.getLocReg() == X86::XMM0 || VA.getLocReg() == X86::XMM1) {
+          ValToCopy = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::i64, ValToCopy);
           ValToCopy = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, MVT::v2i64,
                                   ValToCopy);
-          
           // If we don't have SSE2 available, convert to v4f32 so the generated
           // register is legal.
           if (!Subtarget->hasSSE2())
@@ -1650,7 +1591,7 @@
         RC = X86::VR256RegisterClass;
       else if (RegVT.isVector() && RegVT.getSizeInBits() == 128)
         RC = X86::VR128RegisterClass;
-      else if (RegVT.isVector() && RegVT.getSizeInBits() == 64)
+      else if (RegVT == MVT::x86mmx)
         RC = X86::VR64RegisterClass;
       else
         llvm_unreachable("Unknown argument type!");
@@ -1673,9 +1614,8 @@
       if (VA.isExtInLoc()) {
         // Handle MMX values passed in XMM regs.
         if (RegVT.isVector()) {
-          ArgValue = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, MVT::i64,
-                                 ArgValue, DAG.getConstant(0, MVT::i64));
-          ArgValue = DAG.getNode(ISD::BIT_CONVERT, dl, VA.getValVT(), ArgValue);
+          ArgValue = DAG.getNode(X86ISD::MOVDQ2Q, dl, VA.getValVT(),
+                                 ArgValue);
         } else
           ArgValue = DAG.getNode(ISD::TRUNCATE, dl, VA.getValVT(), ArgValue);
       }
@@ -2876,7 +2816,7 @@
 /// is suitable for input to PSHUFD or PSHUFW.  That is, it doesn't reference
 /// the second operand.
 static bool isPSHUFDMask(const SmallVectorImpl<int> &Mask, EVT VT) {
-  if (VT == MVT::v4f32 || VT == MVT::v4i32 || VT == MVT::v4i16)
+  if (VT == MVT::v4f32 || VT == MVT::v4i32 )
     return (Mask[0] < 4 && Mask[1] < 4 && Mask[2] < 4 && Mask[3] < 4);
   if (VT == MVT::v2f64 || VT == MVT::v2i64)
     return (Mask[0] < 2 && Mask[1] < 2);
@@ -3548,13 +3488,10 @@
                              DebugLoc dl) {
   assert(VT.isVector() && "Expected a vector type");
 
-  // Always build zero vectors as <4 x i32> or <2 x i32> bitcasted
+  // Always build SSE zero vectors as <4 x i32> bitcasted
   // to their dest type. This ensures they get CSE'd.
   SDValue Vec;
-  if (VT.getSizeInBits() == 64) { // MMX
-    SDValue Cst = DAG.getTargetConstant(0, MVT::i32);
-    Vec = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v2i32, Cst, Cst);
-  } else if (VT.getSizeInBits() == 128) {
+  if (VT.getSizeInBits() == 128) {  // SSE
     if (HasSSE2) {  // SSE2
       SDValue Cst = DAG.getTargetConstant(0, MVT::i32);
       Vec = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32, Cst, Cst, Cst, Cst);
@@ -3582,10 +3519,7 @@
   // type.  This ensures they get CSE'd.
   SDValue Cst = DAG.getTargetConstant(~0U, MVT::i32);
   SDValue Vec;
-  if (VT.getSizeInBits() == 64) // MMX
-    Vec = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v2i32, Cst, Cst);
-  else // SSE
-    Vec = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32, Cst, Cst, Cst, Cst);
+  Vec = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v4i32, Cst, Cst, Cst, Cst);
   return DAG.getNode(ISD::BIT_CONVERT, dl, VT, Vec);
 }
 
@@ -4025,8 +3959,7 @@
 static SDValue getVShift(bool isLeft, EVT VT, SDValue SrcOp,
                          unsigned NumBits, SelectionDAG &DAG,
                          const TargetLowering &TLI, DebugLoc dl) {
-  bool isMMX = VT.getSizeInBits() == 64;
-  EVT ShVT = isMMX ? MVT::v1i64 : MVT::v2i64;
+  EVT ShVT = MVT::v2i64;
   unsigned Opc = isLeft ? X86ISD::VSHL : X86ISD::VSRL;
   SrcOp = DAG.getNode(ISD::BIT_CONVERT, dl, ShVT, SrcOp);
   return DAG.getNode(ISD::BIT_CONVERT, dl, VT,
@@ -4180,10 +4113,10 @@
   if (ISD::isBuildVectorAllZeros(Op.getNode()) ||
       (Op.getValueType().getSizeInBits() != 256 &&
        ISD::isBuildVectorAllOnes(Op.getNode()))) {
-    // Canonicalize this to either <4 x i32> or <2 x i32> (SSE vs MMX) to
+    // Canonicalize this to <4 x i32> (SSE) to
     // 1) ensure the zero vectors are CSE'd, and 2) ensure that i64 scalars are
     // eliminated on x86-32 hosts.
-    if (Op.getValueType() == MVT::v4i32 || Op.getValueType() == MVT::v2i32)
+    if (Op.getValueType() == MVT::v4i32)
       return Op;
 
     if (ISD::isBuildVectorAllOnes(Op.getNode()))
@@ -4234,9 +4167,10 @@
     if (ExtVT == MVT::i64 && !Subtarget->is64Bit() &&
         (!IsAllConstants || Idx == 0)) {
       if (DAG.MaskedValueIsZero(Item, APInt::getBitsSet(64, 32, 64))) {
-        // Handle MMX and SSE both.
-        EVT VecVT = VT == MVT::v2i64 ? MVT::v4i32 : MVT::v2i32;
-        unsigned VecElts = VT == MVT::v2i64 ? 4 : 2;
+        // Handle SSE only.
+        assert(VT == MVT::v2i64 && "Expected an SSE value type!");
+        EVT VecVT = MVT::v4i32;
+        unsigned VecElts = 4;
 
         // Truncate the value (which may itself be a constant) to i32, and
         // convert it to a vector with movd (S2V+shuffle to zero extend).
@@ -4275,7 +4209,8 @@
                                            DAG);
       } else if (ExtVT == MVT::i16 || ExtVT == MVT::i8) {
         Item = DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::i32, Item);
-        EVT MiddleVT = VT.getSizeInBits() == 64 ? MVT::v2i32 : MVT::v4i32;
+        assert(VT.getSizeInBits() == 128 && "Expected an SSE value type!");
+        EVT MiddleVT = MVT::v4i32;
         Item = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, MiddleVT, Item);
         Item = getShuffleVectorZeroOrUndef(Item, 0, true,
                                            Subtarget->hasSSE2(), DAG);
@@ -5418,11 +5353,8 @@
   MachineFunction &MF = DAG.getMachineFunction();
   bool OptForSize = MF.getFunction()->hasFnAttr(Attribute::OptimizeForSize);
 
-  // FIXME: this is somehow handled during isel by MMX pattern fragments. Remove
-  // the check or come up with another solution when all MMX move to intrinsics,
-  // but don't allow this to be considered legal, we don't want vector_shuffle
-  // operations to be matched during isel anymore.
-  if (isMMX && SVOp->isSplat())
+  // Shuffle operations on MMX not supported.
+  if (isMMX)
     return Op;
 
   // Vector shuffle lowering takes 3 steps:
@@ -5456,10 +5388,10 @@
       return getTargetShuffleNode(getUNPCKHOpcode(VT), dl, VT, V1, V1, DAG);
 
   if (X86::isMOVDDUPMask(SVOp) && HasSSE3 && V2IsUndef &&
-      RelaxedMayFoldVectorLoad(V1) && !isMMX)
+      RelaxedMayFoldVectorLoad(V1))
     return getTargetShuffleNode(X86ISD::MOVDDUP, dl, VT, V1, DAG);
 
-  if (!isMMX && X86::isMOVHLPS_v_undef_Mask(SVOp))
+  if (X86::isMOVHLPS_v_undef_Mask(SVOp))
     return getMOVHighToLow(Op, dl, DAG);
 
   // Use to match splats
@@ -5507,7 +5439,7 @@
       return V2;
     if (ISD::isBuildVectorAllZeros(V1.getNode()))
       return getVZextMovL(VT, VT, V2, DAG, Subtarget, dl);
-    if (!isMMX && !X86::isMOVLPMask(SVOp)) {
+    if (!X86::isMOVLPMask(SVOp)) {
       if (HasSSE2 && (VT == MVT::v2i64 || VT == MVT::v2f64))
         return getTargetShuffleNode(X86ISD::MOVSD, dl, VT, V1, V2, DAG);
 
@@ -5517,22 +5449,20 @@
   }
 
   // FIXME: fold these into legal mask.
-  if (!isMMX) {
-    if (X86::isMOVLHPSMask(SVOp) && !X86::isUNPCKLMask(SVOp))
-      return getMOVLowToHigh(Op, dl, DAG, HasSSE2);
+  if (X86::isMOVLHPSMask(SVOp) && !X86::isUNPCKLMask(SVOp))
+    return getMOVLowToHigh(Op, dl, DAG, HasSSE2);
 
-    if (X86::isMOVHLPSMask(SVOp))
-      return getMOVHighToLow(Op, dl, DAG);
+  if (X86::isMOVHLPSMask(SVOp))
+    return getMOVHighToLow(Op, dl, DAG);
 
-    if (X86::isMOVSHDUPMask(SVOp) && HasSSE3 && V2IsUndef && NumElems == 4)
-      return getTargetShuffleNode(X86ISD::MOVSHDUP, dl, VT, V1, DAG);
+  if (X86::isMOVSHDUPMask(SVOp) && HasSSE3 && V2IsUndef && NumElems == 4)
+    return getTargetShuffleNode(X86ISD::MOVSHDUP, dl, VT, V1, DAG);
 
-    if (X86::isMOVSLDUPMask(SVOp) && HasSSE3 && V2IsUndef && NumElems == 4)
-      return getTargetShuffleNode(X86ISD::MOVSLDUP, dl, VT, V1, DAG);
+  if (X86::isMOVSLDUPMask(SVOp) && HasSSE3 && V2IsUndef && NumElems == 4)
+    return getTargetShuffleNode(X86ISD::MOVSLDUP, dl, VT, V1, DAG);
 
-    if (X86::isMOVLPMask(SVOp))
-      return getMOVLP(Op, dl, DAG, HasSSE2);
-  }
+  if (X86::isMOVLPMask(SVOp))
+    return getMOVLP(Op, dl, DAG, HasSSE2);
 
   if (ShouldXformToMOVHLPS(SVOp) ||
       ShouldXformToMOVLP(V1.getNode(), V2.getNode(), SVOp))
@@ -5573,12 +5503,10 @@
   }
 
   if (X86::isUNPCKLMask(SVOp))
-    return (isMMX) ?
-      Op : getTargetShuffleNode(getUNPCKLOpcode(VT), dl, VT, V1, V2, DAG);
+    return getTargetShuffleNode(getUNPCKLOpcode(VT), dl, VT, V1, V2, DAG);
 
   if (X86::isUNPCKHMask(SVOp))
-    return (isMMX) ?
-      Op : getTargetShuffleNode(getUNPCKHOpcode(VT), dl, VT, V1, V2, DAG);
+    return getTargetShuffleNode(getUNPCKHOpcode(VT), dl, VT, V1, V2, DAG);
 
   if (V2IsSplat) {
     // Normalize mask so all entries that point to V2 points to its first
@@ -5602,18 +5530,14 @@
     ShuffleVectorSDNode *NewSVOp = cast<ShuffleVectorSDNode>(NewOp);
 
     if (X86::isUNPCKLMask(NewSVOp))
-      return (isMMX) ?
-        NewOp : getTargetShuffleNode(getUNPCKLOpcode(VT), dl, VT, V2, V1, DAG);
+      return getTargetShuffleNode(getUNPCKLOpcode(VT), dl, VT, V2, V1, DAG);
 
     if (X86::isUNPCKHMask(NewSVOp))
-      return (isMMX) ?
-        NewOp : getTargetShuffleNode(getUNPCKHOpcode(VT), dl, VT, V2, V1, DAG);
+      return getTargetShuffleNode(getUNPCKHOpcode(VT), dl, VT, V2, V1, DAG);
   }
 
-  // FIXME: for mmx, bitcast v2i32 to v4i16 for shuffle.
-
   // Normalize the node to match x86 shuffle ops if needed
-  if (!isMMX && V2.getOpcode() != ISD::UNDEF && isCommutedSHUFP(SVOp))
+  if (V2.getOpcode() != ISD::UNDEF && isCommutedSHUFP(SVOp))
     return CommuteVectorShuffle(SVOp, DAG);
 
   // The checks below are all present in isShuffleMaskLegal, but they are
@@ -5627,12 +5551,6 @@
                                 X86::getShufflePALIGNRImmediate(SVOp),
                                 DAG);
 
-  // Only a few shuffle masks are handled for 64-bit vectors (MMX), and
-  // 64-bit vectors which made to this point can't be handled, they are
-  // expanded.
-  if (isMMX)
-    return SDValue();
-
   if (ShuffleVectorSDNode::isSplatMask(&M[0], VT) &&
       SVOp->getSplatIndex() == 0 && V2IsUndef) {
     if (VT == MVT::v2f64)
@@ -5681,8 +5599,8 @@
       return NewOp;
   }
 
-  // Handle all 4 wide cases with a number of shuffles except for MMX.
-  if (NumElems == 4 && !isMMX)
+  // Handle all 4 wide cases with a number of shuffles.
+  if (NumElems == 4)
     return LowerVECTOR_SHUFFLE_4wide(SVOp, DAG);
 
   return SDValue();
@@ -5824,8 +5742,6 @@
     unsigned Opc;
     if (VT == MVT::v8i16)
       Opc = X86ISD::PINSRW;
-    else if (VT == MVT::v4i16)
-      Opc = X86ISD::MMX_PINSRW;
     else if (VT == MVT::v16i8)
       Opc = X86ISD::PINSRB;
     else
@@ -5881,8 +5797,7 @@
       N1 = DAG.getNode(ISD::ANY_EXTEND, dl, MVT::i32, N1);
     if (N2.getValueType() != MVT::i32)
       N2 = DAG.getIntPtrConstant(cast<ConstantSDNode>(N2)->getZExtValue());
-    return DAG.getNode(VT == MVT::v8i16 ? X86ISD::PINSRW : X86ISD::MMX_PINSRW,
-                       dl, VT, N0, N1, N2);
+    return DAG.getNode(X86ISD::PINSRW, dl, VT, N0, N1, N2);
   }
   return SDValue();
 }
@@ -5896,16 +5811,10 @@
     return DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, MVT::v1i64, Op.getOperand(0));
 
   SDValue AnyExt = DAG.getNode(ISD::ANY_EXTEND, dl, MVT::i32, Op.getOperand(0));
-  EVT VT = MVT::v2i32;
-  switch (Op.getValueType().getSimpleVT().SimpleTy) {
-  default: break;
-  case MVT::v16i8:
-  case MVT::v8i16:
-    VT = MVT::v4i32;
-    break;
-  }
+  assert(Op.getValueType().getSimpleVT().getSizeInBits() == 128 &&
+         "Expected an SSE type!");
   return DAG.getNode(ISD::BIT_CONVERT, dl, Op.getValueType(),
-                     DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, AnyExt));
+                     DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, MVT::v4i32,AnyExt));
 }
 
 // ConstantPool, JumpTable, GlobalAddress, and ExternalSymbol are lowered as
@@ -6322,11 +6231,8 @@
                                            SelectionDAG &DAG) const {
   EVT SrcVT = Op.getOperand(0).getValueType();
 
-  if (SrcVT.isVector()) {
-    if (SrcVT == MVT::v2i32 && Op.getValueType() == MVT::v2f64)
-      return Op;
+  if (SrcVT.isVector())
     return SDValue();
-  }
 
   assert(SrcVT.getSimpleVT() <= MVT::i64 && SrcVT.getSimpleVT() >= MVT::i16 &&
          "Unknown SINT_TO_FP to lower!");
@@ -6702,13 +6608,8 @@
 
 SDValue X86TargetLowering::LowerFP_TO_SINT(SDValue Op,
                                            SelectionDAG &DAG) const {
-  if (Op.getValueType().isVector()) {
-    if (Op.getValueType() == MVT::v2i32 &&
-        Op.getOperand(0).getValueType() == MVT::v2f64) {
-      return Op;
-    }
+  if (Op.getValueType().isVector())
     return SDValue();
-  }
 
   std::pair<SDValue,SDValue> Vals = FP_TO_INTHelper(Op, DAG, true);
   SDValue FIST = Vals.first, StackSlot = Vals.second;
@@ -7211,11 +7112,8 @@
 
   switch (VT.getSimpleVT().SimpleTy) {
   default: break;
-  case MVT::v8i8:
   case MVT::v16i8: EQOpc = X86ISD::PCMPEQB; GTOpc = X86ISD::PCMPGTB; break;
-  case MVT::v4i16:
   case MVT::v8i16: EQOpc = X86ISD::PCMPEQW; GTOpc = X86ISD::PCMPGTW; break;
-  case MVT::v2i32:
   case MVT::v4i32: EQOpc = X86ISD::PCMPEQD; GTOpc = X86ISD::PCMPGTD; break;
   case MVT::v2i64: EQOpc = X86ISD::PCMPEQQ; GTOpc = X86ISD::PCMPGTQ; break;
   }
@@ -7930,6 +7828,7 @@
       ShAmt =  DAG.getNode(ISD::BUILD_VECTOR, dl, ShAmtVT, &ShOps[0], 4);
     } else {
       ShAmt =  DAG.getNode(ISD::BUILD_VECTOR, dl, ShAmtVT, &ShOps[0], 2);
+// FIXME this must be lowered to get rid of the invalid type.
     }
 
     EVT VT = Op.getValueType();
@@ -8840,7 +8739,6 @@
   case X86ISD::INSERTPS:           return "X86ISD::INSERTPS";
   case X86ISD::PINSRB:             return "X86ISD::PINSRB";
   case X86ISD::PINSRW:             return "X86ISD::PINSRW";
-  case X86ISD::MMX_PINSRW:         return "X86ISD::MMX_PINSRW";
   case X86ISD::PSHUFB:             return "X86ISD::PSHUFB";
   case X86ISD::FMAX:               return "X86ISD::FMAX";
   case X86ISD::FMIN:               return "X86ISD::FMIN";
@@ -9711,7 +9609,6 @@
   case X86::TLSCall_64:
     return EmitLoweredTLSCall(MI, BB);
   case X86::CMOV_GR8:
-  case X86::CMOV_V1I64:
   case X86::CMOV_FR32:
   case X86::CMOV_FR64:
   case X86::CMOV_V4F32: