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Add MIPS DSP register classes. Set actions of DSP vector operations and override 

TargetLowering's callback functions.

llvm-svn: 164431
This commit is contained in:
Akira Hatanaka 2012-09-21 23:58:31 +00:00
parent 233ac53a3f
commit fabb8cf421
2 changed files with 49 additions and 0 deletions
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39
llvm/lib/Target/Mips/MipsISelLowering.cpp
View File

@ -129,6 +129,22 @@ MipsTargetLowering(MipsTargetMachine &TM)
addRegisterClass(MVT::i32, &Mips::CPU16RegsRegClass);
}
if (Subtarget->hasDSP()) {
MVT::SimpleValueType VecTys[2] = {MVT::v2i16, MVT::v4i8};
for (unsigned i = 0; i < array_lengthof(VecTys); ++i) {
addRegisterClass(VecTys[i], &Mips::DSPRegsRegClass);
// Expand all builtin opcodes.
for (unsigned Opc = 0; Opc < ISD::BUILTIN_OP_END; ++Opc)
setOperationAction(Opc, VecTys[i], Expand);
setOperationAction(ISD::LOAD, VecTys[i], Legal);
setOperationAction(ISD::STORE, VecTys[i], Legal);
setOperationAction(ISD::BITCAST, VecTys[i], Legal);
}
}
if (!TM.Options.UseSoftFloat) {
addRegisterClass(MVT::f32, &Mips::FGR32RegClass);
@ -269,6 +285,9 @@ MipsTargetLowering(MipsTargetMachine &TM)
setOperationAction(ISD::VACOPY, MVT::Other, Expand);
setOperationAction(ISD::VAEND, MVT::Other, Expand);
setOperationAction(ISD::INTRINSIC_WO_CHAIN, MVT::i64, Custom);
setOperationAction(ISD::INTRINSIC_W_CHAIN, MVT::i64, Custom);
// Use the default for now
setOperationAction(ISD::STACKSAVE, MVT::Other, Expand);
setOperationAction(ISD::STACKRESTORE, MVT::Other, Expand);
@ -803,6 +822,26 @@ SDValue MipsTargetLowering::PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI)
return SDValue();
}
void
MipsTargetLowering::LowerOperationWrapper(SDNode *N,
SmallVectorImpl<SDValue> &Results,
SelectionDAG &DAG) const {
SDValue Res = LowerOperation(SDValue(N, 0), DAG);
for (unsigned I = 0, E = Res->getNumValues(); I != E; ++I)
Results.push_back(Res.getValue(I));
}
void
MipsTargetLowering::ReplaceNodeResults(SDNode *N,
SmallVectorImpl<SDValue> &Results,
SelectionDAG &DAG) const {
SDValue Res = LowerOperation(SDValue(N, 0), DAG);
for (unsigned I = 0, E = Res->getNumValues(); I != E; ++I)
Results.push_back(Res.getValue(I));
}
SDValue MipsTargetLowering::
LowerOperation(SDValue Op, SelectionDAG &DAG) const
{

10
llvm/lib/Target/Mips/MipsISelLowering.h
View File

@ -146,9 +146,19 @@ namespace llvm {
virtual bool allowsUnalignedMemoryAccesses (EVT VT) const;
virtual void LowerOperationWrapper(SDNode *N,
SmallVectorImpl<SDValue> &Results,
SelectionDAG &DAG) const;
/// LowerOperation - Provide custom lowering hooks for some operations.
virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
/// ReplaceNodeResults - Replace the results of node with an illegal result
/// type with new values built out of custom code.
///
virtual void ReplaceNodeResults(SDNode *N, SmallVectorImpl<SDValue>&Results,
SelectionDAG &DAG) const;
/// getTargetNodeName - This method returns the name of a target specific
// DAG node.
virtual const char *getTargetNodeName(unsigned Opcode) const;