Be bug compatible with gcc by returning MMX values in RAX.

[oota-llvm.git] / lib / Target / Mips / MipsISelDAGToDAG.cpp

diff --git a/lib/Target/Mips/MipsISelDAGToDAG.cpp b/lib/Target/Mips/MipsISelDAGToDAG.cpp
index a408a9623ca4d3f7d7b27335da65332ea1a6ffca..e1efaa7dc8a708950f603981c4f2fd0275db530c 100644 (file)
--- a/lib/Target/Mips/MipsISelDAGToDAG.cpp
+++ b/lib/Target/Mips/MipsISelDAGToDAG.cpp
@@ -32,9 +32,6 @@
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Debug.h"
-#include <queue>
-#include <set>
-
 using namespace llvm;
 
 //===----------------------------------------------------------------------===//
@@ -52,19 +49,14 @@ class VISIBILITY_HIDDEN MipsDAGToDAGISel : public SelectionDAGISel {
   /// TM - Keep a reference to MipsTargetMachine.
   MipsTargetMachine &TM;
 
-  /// MipsLowering - This object fully describes how to lower LLVM code to an
-  /// Mips-specific SelectionDAG.
-  MipsTargetLowering MipsLowering;
-
   /// Subtarget - Keep a pointer to the MipsSubtarget around so that we can
   /// make the right decision when generating code for different targets.
   const MipsSubtarget &Subtarget;
  
 public:
   explicit MipsDAGToDAGISel(MipsTargetMachine &tm) :
-  SelectionDAGISel(MipsLowering),
-  TM(tm), MipsLowering(*TM.getTargetLowering()), 
-  Subtarget(tm.getSubtarget<MipsSubtarget>()) {}
+  SelectionDAGISel(tm),
+  TM(tm), Subtarget(tm.getSubtarget<MipsSubtarget>()) {}
   
   virtual void InstructionSelect();
 
@@ -113,7 +105,7 @@ InstructionSelect()
   #endif
 
   // Select target instructions for the DAG.
-  SelectRoot();
+  SelectRoot(*CurDAG);
 
   #ifndef NDEBUG
   DOUT << "===== Instruction selection ends:\n";
@@ -134,8 +126,9 @@ SDValue MipsDAGToDAGISel::getGlobalBaseReg() {
       break;
     }
   assert(GP && "GOT PTR not in liveins");
+  // FIXME is there a sensible place to get debug info for this?
   return CurDAG->getCopyFromReg(CurDAG->getEntryNode(), 
-                                GP, MVT::i32);
+                                DebugLoc::getUnknownLoc(), GP, MVT::i32);
 }
 
 /// ComplexPattern used on MipsInstrInfo
@@ -195,6 +188,7 @@ Select(SDValue N)
 {
   SDNode *Node = N.getNode();
   unsigned Opcode = Node->getOpcode();
+  DebugLoc dl = Node->getDebugLoc();
 
   // Dump information about the Node being selected
   #ifndef NDEBUG
@@ -226,12 +220,12 @@ Select(SDValue N)
     case ISD::SUBE: 
     case ISD::ADDE: {
       SDValue InFlag = Node->getOperand(2), CmpLHS;
-      unsigned Opc = InFlag.getOpcode(), MOp;
-
+      unsigned Opc = InFlag.getOpcode(); Opc=Opc;
       assert(((Opc == ISD::ADDC || Opc == ISD::ADDE) || 
               (Opc == ISD::SUBC || Opc == ISD::SUBE)) &&  
              "(ADD|SUB)E flag operand must come from (ADD|SUB)C/E insn");
 
+      unsigned MOp;
       if (Opcode == ISD::ADDE) {
         CmpLHS = InFlag.getValue(0);
         MOp = Mips::ADDu;
@@ -244,12 +238,10 @@ Select(SDValue N)
 
       SDValue LHS = Node->getOperand(0);
       SDValue RHS = Node->getOperand(1);
-      AddToISelQueue(LHS);
-      AddToISelQueue(RHS);
 
       MVT VT = LHS.getValueType();
-      SDNode *Carry = CurDAG->getTargetNode(Mips::SLTu, VT, Ops, 2);
-      SDNode *AddCarry = CurDAG->getTargetNode(Mips::ADDu, VT, 
+      SDNode *Carry = CurDAG->getTargetNode(Mips::SLTu, dl, VT, Ops, 2);
+      SDNode *AddCarry = CurDAG->getTargetNode(Mips::ADDu, dl, VT, 
                                                SDValue(Carry,0), RHS);
 
       return CurDAG->SelectNodeTo(N.getNode(), MOp, VT, MVT::Flag, 
@@ -263,8 +255,6 @@ Select(SDValue N)
     case ISD::UMUL_LOHI: {
       SDValue Op1 = Node->getOperand(0);
       SDValue Op2 = Node->getOperand(1);
-      AddToISelQueue(Op1);
-      AddToISelQueue(Op2);
 
       unsigned Op;
       if (Opcode == ISD::UMUL_LOHI || Opcode == ISD::SMUL_LOHI)
@@ -272,13 +262,13 @@ Select(SDValue N)
       else
         Op = (Opcode == ISD::UDIVREM ? Mips::DIVu : Mips::DIV);
 
-      SDNode *Node = CurDAG->getTargetNode(Op, MVT::Flag, Op1, Op2);
+      SDNode *Node = CurDAG->getTargetNode(Op, dl, MVT::Flag, Op1, Op2);
 
       SDValue InFlag = SDValue(Node, 0);
-      SDNode *Lo = CurDAG->getTargetNode(Mips::MFLO, MVT::i32, 
+      SDNode *Lo = CurDAG->getTargetNode(Mips::MFLO, dl, MVT::i32, 
                                          MVT::Flag, InFlag);
       InFlag = SDValue(Lo,1);
-      SDNode *Hi = CurDAG->getTargetNode(Mips::MFHI, MVT::i32, InFlag);
+      SDNode *Hi = CurDAG->getTargetNode(Mips::MFHI, dl, MVT::i32, InFlag);
 
       if (!N.getValue(0).use_empty()) 
         ReplaceUses(N.getValue(0), SDValue(Lo,0));
@@ -295,18 +285,17 @@ Select(SDValue N)
     case ISD::MULHU: {
       SDValue MulOp1 = Node->getOperand(0);
       SDValue MulOp2 = Node->getOperand(1);
-      AddToISelQueue(MulOp1);
-      AddToISelQueue(MulOp2);
 
       unsigned MulOp  = (Opcode == ISD::MULHU ? Mips::MULTu : Mips::MULT);
-      SDNode *MulNode = CurDAG->getTargetNode(MulOp, MVT::Flag, MulOp1, MulOp2);
+      SDNode *MulNode = CurDAG->getTargetNode(MulOp, dl, 
+                                              MVT::Flag, MulOp1, MulOp2);
 
       SDValue InFlag = SDValue(MulNode, 0);
 
       if (MulOp == ISD::MUL)
-        return CurDAG->getTargetNode(Mips::MFLO, MVT::i32, InFlag);
+        return CurDAG->getTargetNode(Mips::MFLO, dl, MVT::i32, InFlag);
       else
-        return CurDAG->getTargetNode(Mips::MFHI, MVT::i32, InFlag);
+        return CurDAG->getTargetNode(Mips::MFHI, dl, MVT::i32, InFlag);
     }
 
     /// Div/Rem operations
@@ -316,8 +305,6 @@ Select(SDValue N)
     case ISD::UDIV: {
       SDValue Op1 = Node->getOperand(0);
       SDValue Op2 = Node->getOperand(1);
-      AddToISelQueue(Op1);
-      AddToISelQueue(Op2);
 
       unsigned Op, MOp;
       if (Opcode == ISD::SDIV || Opcode == ISD::UDIV) {
@@ -327,10 +314,10 @@ Select(SDValue N)
         Op  = (Opcode == ISD::SREM ? Mips::DIV : Mips::DIVu);
         MOp = Mips::MFHI;
       }
-      SDNode *Node = CurDAG->getTargetNode(Op, MVT::Flag, Op1, Op2);
+      SDNode *Node = CurDAG->getTargetNode(Op, dl, MVT::Flag, Op1, Op2);
 
       SDValue InFlag = SDValue(Node, 0);
-      return CurDAG->getTargetNode(MOp, MVT::i32, InFlag);
+      return CurDAG->getTargetNode(MOp, dl, MVT::i32, InFlag);
     }
 
     // Get target GOT address.
@@ -349,7 +336,6 @@ Select(SDValue N)
         //bool isCodeLarge = (TM.getCodeModel() == CodeModel::Large);
         SDValue Chain  = Node->getOperand(0);
         SDValue Callee = Node->getOperand(1);
-        AddToISelQueue(Chain);
         SDValue T9Reg = CurDAG->getRegister(Mips::T9, MVT::i32);
         SDValue InFlag(0, 0);
 
@@ -361,21 +347,18 @@ Select(SDValue N)
 
           // Use load to get GOT target
           SDValue Ops[] = { Callee, GPReg, Chain };
-          SDValue Load = SDValue(CurDAG->getTargetNode(Mips::LW, MVT::i32, 
+          SDValue Load = SDValue(CurDAG->getTargetNode(Mips::LW, dl, MVT::i32, 
                                      MVT::Other, Ops, 3), 0);
           Chain = Load.getValue(1);
-          AddToISelQueue(Chain);
 
           // Call target must be on T9
-          Chain = CurDAG->getCopyToReg(Chain, T9Reg, Load, InFlag);
+          Chain = CurDAG->getCopyToReg(Chain, dl, T9Reg, Load, InFlag);
         } else 
           /// Indirect call
-          Chain = CurDAG->getCopyToReg(Chain, T9Reg, Callee, InFlag);
-
-        AddToISelQueue(Chain);
+          Chain = CurDAG->getCopyToReg(Chain, dl, T9Reg, Callee, InFlag);
 
         // Emit Jump and Link Register
-        SDNode *ResNode = CurDAG->getTargetNode(Mips::JALR, MVT::Other,
+        SDNode *ResNode = CurDAG->getTargetNode(Mips::JALR, dl, MVT::Other,
                                   MVT::Flag, T9Reg, Chain);
         Chain  = SDValue(ResNode, 0);
         InFlag = SDValue(ResNode, 1);