[llvm-commits] [llvm] r70763 - in /llvm/trunk/lib/Target/MSP430: MSP430ISelLowering.cpp MSP430ISelLowering.h

[Anton Korobeynikov]

Author: asl
Date: Sun May  3 08:17:49 2009
New Revision: 70763

URL: http://llvm.org/viewvc/llvm-project?rev=70763&view=rev
Log:
Custom lower SIGN_EXTEND

Modified:
    llvm/trunk/lib/Target/MSP430/MSP430ISelLowering.cpp
    llvm/trunk/lib/Target/MSP430/MSP430ISelLowering.h

Modified: llvm/trunk/lib/Target/MSP430/MSP430ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/MSP430/MSP430ISelLowering.cpp?rev=70763&r1=70762&r2=70763&view=diff

==============================================================================
--- llvm/trunk/lib/Target/MSP430/MSP430ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/MSP430/MSP430ISelLowering.cpp Sun May  3 08:17:49 2009
@@ -85,6 +85,7 @@
   setOperationAction(ISD::SELECT_CC,        MVT::Other, Expand);
   setOperationAction(ISD::SELECT,           MVT::i8,    Custom);
   setOperationAction(ISD::SELECT,           MVT::i16,   Custom);
+  setOperationAction(ISD::SIGN_EXTEND,      MVT::i16,   Custom);
 
   // FIXME: Implement efficiently multiplication by a constant
   setOperationAction(ISD::MUL,              MVT::i16,   Expand);
@@ -107,6 +108,7 @@
   case ISD::SETCC:            return LowerSETCC(Op, DAG);
   case ISD::BRCOND:           return LowerBRCOND(Op, DAG);
   case ISD::SELECT:           return LowerSELECT(Op, DAG);
+  case ISD::SIGN_EXTEND:      return LowerSIGN_EXTEND(Op, DAG);
   default:
     assert(0 && "unimplemented operand");
     return SDValue();
@@ -592,6 +594,19 @@
   return DAG.getNode(MSP430ISD::SELECT, dl, VTs, &Ops[0], Ops.size());
 }
 
+SDValue MSP430TargetLowering::LowerSIGN_EXTEND(SDValue Op,
+                                               SelectionDAG &DAG) {
+  SDValue Val = Op.getOperand(0);
+  MVT VT      = Op.getValueType();
+  DebugLoc dl = Op.getDebugLoc();
+
+  assert(VT == MVT::i16 && "Only support i16 for now!");
+
+  return DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, VT,
+                     DAG.getNode(ISD::ANY_EXTEND, dl, VT, Val),
+                     DAG.getValueType(Val.getValueType()));
+}
+
 const char *MSP430TargetLowering::getTargetNodeName(unsigned Opcode) const {
   switch (Opcode) {
   default: return NULL;

Modified: llvm/trunk/lib/Target/MSP430/MSP430ISelLowering.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/MSP430/MSP430ISelLowering.h?rev=70763&r1=70762&r2=70763&view=diff

==============================================================================
--- llvm/trunk/lib/Target/MSP430/MSP430ISelLowering.h (original)
+++ llvm/trunk/lib/Target/MSP430/MSP430ISelLowering.h Sun May  3 08:17:49 2009
@@ -86,6 +86,7 @@
     SDValue LowerSETCC(SDValue Op, SelectionDAG &DAG);
     SDValue LowerBRCOND(SDValue Op, SelectionDAG &DAG);
     SDValue LowerSELECT(SDValue Op, SelectionDAG &DAG);
+    SDValue LowerSIGN_EXTEND(SDValue Op, SelectionDAG &DAG);
 
     SDValue LowerCCCCallTo(SDValue Op, SelectionDAG &DAG,
                            unsigned CC);