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Fixed comment for libcalls.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67373 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjiv Gupta 2009-03-20 14:10:20 +00:00
parent 91520ea585
commit e9d81f0ad8
1 changed files with 21 additions and 18 deletions
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39
lib/Target/PIC16/PIC16ISelLowering.cpp
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@ -191,18 +191,21 @@ MVT PIC16TargetLowering::getSetCCResultType(MVT ValType) const {
return MVT::i8; return MVT::i8;
} }
/// FIXME: These three functions below should not be here if we change /// The type legalizer framework of generating legalizer can generate libcalls
/// the generic code to allow generting libcalls for I8 types as well. /// only when the operand/result types are illegal.
/// PIC16 needs to generate libcalls even for the legal types (i8) for some ops.
/// For example an arithmetic right shift. These functions are used to lower
/// such operations that generate libcall for legal types.
void void
PIC16TargetLowering::setPIC16LibcallName(PIC16ISD::PIC16Libcall Call, PIC16TargetLowering::setPIC16LibcallName(PIC16ISD::PIC16Libcall Call,
const char *Name) { const char *Name) {
PIC16LibcallNames[Call] = Name; PIC16LibcallNames[Call] = Name;
} }
const char * const char *
PIC16TargetLowering::getPIC16LibcallName(PIC16ISD::PIC16Libcall Call) { PIC16TargetLowering::getPIC16LibcallName(PIC16ISD::PIC16Libcall Call) {
return PIC16LibcallNames[Call]; return PIC16LibcallNames[Call];
} }
SDValue SDValue
@ -211,23 +214,23 @@ PIC16TargetLowering::MakePIC16Libcall(PIC16ISD::PIC16Libcall Call,
unsigned NumOps, bool isSigned, unsigned NumOps, bool isSigned,
SelectionDAG &DAG, DebugLoc dl) { SelectionDAG &DAG, DebugLoc dl) {
TargetLowering::ArgListTy Args; TargetLowering::ArgListTy Args;
Args.reserve(NumOps); Args.reserve(NumOps);
TargetLowering::ArgListEntry Entry; TargetLowering::ArgListEntry Entry;
for (unsigned i = 0; i != NumOps; ++i) { for (unsigned i = 0; i != NumOps; ++i) {
Entry.Node = Ops[i]; Entry.Node = Ops[i];
Entry.Ty = Entry.Node.getValueType().getTypeForMVT(); Entry.Ty = Entry.Node.getValueType().getTypeForMVT();
Entry.isSExt = isSigned; Entry.isSExt = isSigned;
Entry.isZExt = !isSigned; Entry.isZExt = !isSigned;
Args.push_back(Entry); Args.push_back(Entry);
} }
SDValue Callee = DAG.getExternalSymbol(getPIC16LibcallName(Call), MVT::i8); SDValue Callee = DAG.getExternalSymbol(getPIC16LibcallName(Call), MVT::i8);
const Type *RetTy = RetVT.getTypeForMVT(); const Type *RetTy = RetVT.getTypeForMVT();
std::pair<SDValue,SDValue> CallInfo = std::pair<SDValue,SDValue> CallInfo =
LowerCallTo(DAG.getEntryNode(), RetTy, isSigned, !isSigned, false, LowerCallTo(DAG.getEntryNode(), RetTy, isSigned, !isSigned, false,
false, CallingConv::C, false, Callee, Args, DAG, dl); false, CallingConv::C, false, Callee, Args, DAG, dl);
return CallInfo.first; return CallInfo.first;
} }