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path: root/lib/Target/MSP430/MSP430ISelLowering.cpp
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Diffstat (limited to 'lib/Target/MSP430/MSP430ISelLowering.cpp')
-rw-r--r--lib/Target/MSP430/MSP430ISelLowering.cpp119
1 files changed, 45 insertions, 74 deletions
diff --git a/lib/Target/MSP430/MSP430ISelLowering.cpp b/lib/Target/MSP430/MSP430ISelLowering.cpp
index acfc7c989d..2c7c38ff9c 100644
--- a/lib/Target/MSP430/MSP430ISelLowering.cpp
+++ b/lib/Target/MSP430/MSP430ISelLowering.cpp
@@ -78,13 +78,15 @@ MSP430TargetLowering::MSP430TargetLowering(MSP430TargetMachine &tm) :
setOperationAction(ISD::ExternalSymbol, MVT::i16, Custom);
setOperationAction(ISD::BR_JT, MVT::Other, Expand);
setOperationAction(ISD::BRIND, MVT::Other, Expand);
- setOperationAction(ISD::BR_CC, MVT::Other, Expand);
- setOperationAction(ISD::BRCOND, MVT::Other, Custom);
- setOperationAction(ISD::SETCC, MVT::i8, Custom);
- setOperationAction(ISD::SETCC, MVT::i16, Custom);
- setOperationAction(ISD::SELECT_CC, MVT::Other, Expand);
- setOperationAction(ISD::SELECT, MVT::i8, Custom);
- setOperationAction(ISD::SELECT, MVT::i16, Custom);
+ setOperationAction(ISD::BR_CC, MVT::i8, Custom);
+ setOperationAction(ISD::BR_CC, MVT::i16, Custom);
+ setOperationAction(ISD::BRCOND, MVT::Other, Expand);
+ setOperationAction(ISD::SETCC, MVT::i8, Expand);
+ setOperationAction(ISD::SETCC, MVT::i16, Expand);
+ setOperationAction(ISD::SELECT, MVT::i8, Expand);
+ setOperationAction(ISD::SELECT, MVT::i16, Expand);
+ setOperationAction(ISD::SELECT_CC, MVT::i8, Custom);
+ setOperationAction(ISD::SELECT_CC, MVT::i16, Custom);
setOperationAction(ISD::SIGN_EXTEND, MVT::i16, Custom);
// FIXME: Implement efficiently multiplication by a constant
@@ -110,9 +112,8 @@ SDValue MSP430TargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) {
case ISD::CALL: return LowerCALL(Op, DAG);
case ISD::GlobalAddress: return LowerGlobalAddress(Op, DAG);
case ISD::ExternalSymbol: return LowerExternalSymbol(Op, DAG);
- case ISD::SETCC: return LowerSETCC(Op, DAG);
- case ISD::BRCOND: return LowerBRCOND(Op, DAG);
- case ISD::SELECT: return LowerSELECT(Op, DAG);
+ case ISD::BR_CC: return LowerBR_CC(Op, DAG);
+ case ISD::SELECT_CC: return LowerSELECT_CC(Op, DAG);
case ISD::SIGN_EXTEND: return LowerSIGN_EXTEND(Op, DAG);
default:
assert(0 && "unimplemented operand");
@@ -490,23 +491,14 @@ SDValue MSP430TargetLowering::LowerExternalSymbol(SDValue Op,
return DAG.getNode(MSP430ISD::Wrapper, dl, getPointerTy(), Result);;
}
-
-MVT MSP430TargetLowering::getSetCCResultType(MVT VT) const {
- return MVT::i8;
-}
-
-SDValue MSP430TargetLowering::LowerSETCC(SDValue Op, SelectionDAG &DAG) {
- assert(Op.getValueType() == MVT::i8 && "SetCC type must be 8-bit integer");
- SDValue LHS = Op.getOperand(0);
- SDValue RHS = Op.getOperand(1);
- DebugLoc dl = Op.getDebugLoc();
- ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(2))->get();
-
+static SDValue EmitCMP(SDValue &LHS, SDValue &RHS, unsigned &TargetCC,
+ ISD::CondCode CC,
+ DebugLoc dl, SelectionDAG &DAG) {
// FIXME: Handle bittests someday
assert(!LHS.getValueType().isFloatingPoint() && "We don't handle FP yet");
// FIXME: Handle jump negative someday
- unsigned TargetCC = 0;
+ TargetCC = MSP430::COND_INVALID;
switch (CC) {
default: assert(0 && "Invalid integer condition!");
case ISD::SETEQ:
@@ -537,66 +529,46 @@ SDValue MSP430TargetLowering::LowerSETCC(SDValue Op, SelectionDAG &DAG) {
break;
}
- SDValue Cond = DAG.getNode(MSP430ISD::CMP, dl, MVT::i16, LHS, RHS);
- return DAG.getNode(MSP430ISD::SETCC, dl, MVT::i8,
- DAG.getConstant(TargetCC, MVT::i8), Cond);
+ return DAG.getNode(MSP430ISD::CMP, dl, MVT::Flag, LHS, RHS);
}
-SDValue MSP430TargetLowering::LowerBRCOND(SDValue Op, SelectionDAG &DAG) {
+
+SDValue MSP430TargetLowering::LowerBR_CC(SDValue Op, SelectionDAG &DAG) {
SDValue Chain = Op.getOperand(0);
- SDValue Cond = Op.getOperand(1);
- SDValue Dest = Op.getOperand(2);
- DebugLoc dl = Op.getDebugLoc();
- SDValue CC;
-
- // Lower condition if not lowered yet
- if (Cond.getOpcode() == ISD::SETCC)
- Cond = LowerSETCC(Cond, DAG);
-
- // If condition flag is set by a MSP430ISD::CMP, then use it as the condition
- // setting operand in place of the MSP430ISD::SETCC.
- if (Cond.getOpcode() == MSP430ISD::SETCC) {
- CC = Cond.getOperand(0);
- Cond = Cond.getOperand(1);
- } else
- assert(0 && "Unimplemented condition!");
-
- return DAG.getNode(MSP430ISD::BRCOND, dl, Op.getValueType(),
- Chain, Dest, CC, Cond);
+ ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(1))->get();
+ SDValue LHS = Op.getOperand(2);
+ SDValue RHS = Op.getOperand(3);
+ SDValue Dest = Op.getOperand(4);
+ DebugLoc dl = Op.getDebugLoc();
+
+ unsigned TargetCC = MSP430::COND_INVALID;
+ SDValue Flag = EmitCMP(LHS, RHS, TargetCC, CC, dl, DAG);
+
+ return DAG.getNode(MSP430ISD::BR_CC, dl, Op.getValueType(),
+ Chain,
+ Dest, DAG.getConstant(TargetCC, MVT::i8),
+ Flag);
}
-SDValue MSP430TargetLowering::LowerSELECT(SDValue Op, SelectionDAG &DAG) {
- SDValue Cond = Op.getOperand(0);
- SDValue TrueV = Op.getOperand(1);
- SDValue FalseV = Op.getOperand(2);
+SDValue MSP430TargetLowering::LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) {
+ SDValue LHS = Op.getOperand(0);
+ SDValue RHS = Op.getOperand(1);
+ SDValue TrueV = Op.getOperand(2);
+ SDValue FalseV = Op.getOperand(3);
+ ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(4))->get();
DebugLoc dl = Op.getDebugLoc();
- SDValue CC;
-
- // Lower condition if not lowered yet
- if (Cond.getOpcode() == ISD::SETCC)
- Cond = LowerSETCC(Cond, DAG);
-
- // If condition flag is set by a MSP430ISD::CMP, then use it as the condition
- // setting operand in place of the MSP430ISD::SETCC.
- if (Cond.getOpcode() == MSP430ISD::SETCC) {
- CC = Cond.getOperand(0);
- Cond = Cond.getOperand(1);
- TrueV = Cond.getOperand(0);
- FalseV = Cond.getOperand(1);
- } else {
- CC = DAG.getConstant(MSP430::COND_NE, MVT::i16);
- Cond = DAG.getNode(MSP430ISD::CMP, dl, MVT::i16,
- Cond, DAG.getConstant(0, MVT::i16));
- }
+
+ unsigned TargetCC = MSP430::COND_INVALID;
+ SDValue Flag = EmitCMP(LHS, RHS, TargetCC, CC, dl, DAG);
SDVTList VTs = DAG.getVTList(Op.getValueType(), MVT::Flag);
SmallVector<SDValue, 4> Ops;
Ops.push_back(TrueV);
Ops.push_back(FalseV);
- Ops.push_back(CC);
- Ops.push_back(Cond);
+ Ops.push_back(DAG.getConstant(TargetCC, MVT::i8));
+ Ops.push_back(Flag);
- return DAG.getNode(MSP430ISD::SELECT, dl, VTs, &Ops[0], Ops.size());
+ return DAG.getNode(MSP430ISD::SELECT_CC, dl, VTs, &Ops[0], Ops.size());
}
SDValue MSP430TargetLowering::LowerSIGN_EXTEND(SDValue Op,
@@ -621,10 +593,9 @@ const char *MSP430TargetLowering::getTargetNodeName(unsigned Opcode) const {
case MSP430ISD::RRC: return "MSP430ISD::RRC";
case MSP430ISD::CALL: return "MSP430ISD::CALL";
case MSP430ISD::Wrapper: return "MSP430ISD::Wrapper";
- case MSP430ISD::BRCOND: return "MSP430ISD::BRCOND";
+ case MSP430ISD::BR_CC: return "MSP430ISD::BR_CC";
case MSP430ISD::CMP: return "MSP430ISD::CMP";
- case MSP430ISD::SETCC: return "MSP430ISD::SETCC";
- case MSP430ISD::SELECT: return "MSP430ISD::SELECT";
+ case MSP430ISD::SELECT_CC: return "MSP430ISD::SELECT_CC";
}
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-07-17 08:40:45 +0000