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Match frame indexes

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llvm-svn: 70736
This commit is contained in:
Anton Korobeynikov 2009-05-03 13:10:11 +00:00
parent e7639579a3
commit 88cc152a78
1 changed files with 11 additions and 9 deletions
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20
lib/Target/MSP430/MSP430ISelDAGToDAG.cpp
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@ -75,9 +75,12 @@ FunctionPass *llvm::createMSP430ISelDag(MSP430TargetMachine &TM) {
// FIXME: This is pretty dummy routine and needs to be rewritten in the future.
bool MSP430DAGToDAGISel::SelectAddr(SDValue Op, SDValue Addr,
SDValue &Base, SDValue &Disp) {
// We don't support frame index stuff yet.
if (isa<FrameIndexSDNode>(Addr))
return false;
// Try to match frame address first.
if (FrameIndexSDNode *FIN = dyn_cast<FrameIndexSDNode>(Addr)) {
Base = CurDAG->getTargetFrameIndex(FIN->getIndex(), MVT::i16);
Disp = CurDAG->getTargetConstant(0, MVT::i16);
return true;
}
// Operand is a result from ADD with constant operand which fits into i16.
switch (Addr.getOpcode()) {
@ -86,13 +89,13 @@ bool MSP430DAGToDAGISel::SelectAddr(SDValue Op, SDValue Addr,
uint64_t CVal = CN->getZExtValue();
// Offset should fit into 16 bits.
if (((CVal << 48) >> 48) == CVal) {
// We don't support frame index stuff yet.
if (isa<FrameIndexSDNode>(Addr.getOperand(0)))
return false;
SDValue N0 = Addr.getOperand(0);
if (FrameIndexSDNode *FIN = dyn_cast<FrameIndexSDNode>(N0))
Base = CurDAG->getTargetFrameIndex(FIN->getIndex(), MVT::i16);
else
Base = N0;
Base = Addr.getOperand(0);
Disp = CurDAG->getTargetConstant(CVal, MVT::i16);
return true;
}
}
@ -103,7 +106,6 @@ bool MSP430DAGToDAGISel::SelectAddr(SDValue Op, SDValue Addr,
Base = CurDAG->getTargetGlobalAddress(G->getGlobal(),
MVT::i16, G->getOffset());
Disp = CurDAG->getTargetConstant(0, MVT::i16);
return true;
}
break;