[PATCH] D47703: [Mips] Remove uneeded variants of ADDC/ADDE lowering

[Amaury SECHET via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL334052: [Mips] Remove uneeded variants of ADDC/ADDE lowering (authored by deadalnix, committed by ).

Repository:
  rL LLVM

https://reviews.llvm.org/D47703

Files:
  llvm/trunk/lib/Target/Mips/Mips16ISelDAGToDAG.cpp
  llvm/trunk/lib/Target/Mips/Mips16InstrInfo.td
  llvm/trunk/lib/Target/Mips/MipsISelLowering.cpp
  llvm/trunk/lib/Target/Mips/MipsSEISelLowering.cpp


Index: llvm/trunk/lib/Target/Mips/Mips16ISelDAGToDAG.cpp
===================================================================
--- llvm/trunk/lib/Target/Mips/Mips16ISelDAGToDAG.cpp
+++ llvm/trunk/lib/Target/Mips/Mips16ISelDAGToDAG.cpp
@@ -192,41 +192,6 @@
   default:
     break;
 
-  case ISD::SUBE:
-  case ISD::ADDE: {
-    SDValue InFlag = Node->getOperand(2), CmpLHS;
-    unsigned Opc = InFlag.getOpcode();
-    (void)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::AdduRxRyRz16;
-    } else {
-      CmpLHS = InFlag.getOperand(0);
-      MOp = Mips::SubuRxRyRz16;
-    }
-
-    SDValue Ops[] = {CmpLHS, InFlag.getOperand(1)};
-
-    SDValue LHS = Node->getOperand(0);
-    SDValue RHS = Node->getOperand(1);
-
-    EVT VT = LHS.getValueType();
-
-    unsigned Sltu_op = Mips::SltuRxRyRz16;
-    SDNode *Carry = CurDAG->getMachineNode(Sltu_op, DL, VT, Ops);
-    unsigned Addu_op = Mips::AdduRxRyRz16;
-    SDNode *AddCarry =
-        CurDAG->getMachineNode(Addu_op, DL, VT, SDValue(Carry, 0), RHS);
-
-    CurDAG->SelectNodeTo(Node, MOp, VT, MVT::Glue, LHS, SDValue(AddCarry, 0));
-    return true;
-  }
-
   /// Mul with two results
   case ISD::SMUL_LOHI:
   case ISD::UMUL_LOHI: {
Index: llvm/trunk/lib/Target/Mips/Mips16InstrInfo.td
===================================================================
--- llvm/trunk/lib/Target/Mips/Mips16InstrInfo.td
+++ llvm/trunk/lib/Target/Mips/Mips16InstrInfo.td
@@ -1407,14 +1407,6 @@
 // Large (>16 bit) immediate loads
 def : Mips16Pat<(i32 imm:$imm), (LwConstant32 imm:$imm, -1)>;
 
-// Carry MipsPatterns
-def : Mips16Pat<(subc CPU16Regs:$lhs, CPU16Regs:$rhs),
-                (SubuRxRyRz16 CPU16Regs:$lhs, CPU16Regs:$rhs)>;
-def : Mips16Pat<(addc CPU16Regs:$lhs, CPU16Regs:$rhs),
-                (AdduRxRyRz16 CPU16Regs:$lhs, CPU16Regs:$rhs)>;
-def : Mips16Pat<(addc  CPU16Regs:$src, immSExt16:$imm),
-                (AddiuRxRxImmX16 CPU16Regs:$src, imm:$imm)>;
-
 //
 // Some branch conditional patterns are not generated by llvm at this time.
 // Some are for seemingly arbitrary reasons not used: i.e. with signed number
Index: llvm/trunk/lib/Target/Mips/MipsSEISelLowering.cpp
===================================================================
--- llvm/trunk/lib/Target/Mips/MipsSEISelLowering.cpp
+++ llvm/trunk/lib/Target/Mips/MipsSEISelLowering.cpp
@@ -104,6 +104,11 @@
     setTargetDAGCombine(ISD::SRL);
     setTargetDAGCombine(ISD::SETCC);
     setTargetDAGCombine(ISD::VSELECT);
+
+    if (Subtarget.hasMips32r2()) {
+      setOperationAction(ISD::ADDC, MVT::i32, Legal);
+      setOperationAction(ISD::ADDE, MVT::i32, Legal);
+    }
   }
 
   if (Subtarget.hasDSPR2())
Index: llvm/trunk/lib/Target/Mips/MipsISelLowering.cpp
===================================================================
--- llvm/trunk/lib/Target/Mips/MipsISelLowering.cpp
+++ llvm/trunk/lib/Target/Mips/MipsISelLowering.cpp
@@ -393,11 +393,6 @@
   setOperationAction(ISD::UDIV, MVT::i64, Expand);
   setOperationAction(ISD::UREM, MVT::i64, Expand);
 
-  if (Subtarget.hasDSP() && Subtarget.hasMips32r2()) {
-    setOperationAction(ISD::ADDC, MVT::i32, Legal);
-    setOperationAction(ISD::ADDE, MVT::i32, Legal);
-  }
-
   // Operations not directly supported by Mips.
   setOperationAction(ISD::BR_CC,             MVT::f32,   Expand);
   setOperationAction(ISD::BR_CC,             MVT::f64,   Expand);


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