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SelectionDAG: Don't do libcall on div/rem if divrem is custom

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v2: TargetLoweringBase:: -> TargetLowering::
    Use Ops array
v3: Explicitly use value 0 for ?DIV
    Remove redundant newline

Differential revision: http://reviews.llvm.org/D7803
reviewer: ab

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238336 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jan Vesely 2015-05-27 16:54:09 +00:00
parent df65fd3205
commit 72be0e4224
1 changed files with 28 additions and 4 deletions
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32
lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
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@ -2134,6 +2134,13 @@ void DAGTypeLegalizer::ExpandIntRes_SDIV(SDNode *N,
SDValue &Lo, SDValue &Hi) {
EVT VT = N->getValueType(0);
SDLoc dl(N);
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
if (TLI.getOperationAction(ISD::SDIVREM, VT) == TargetLowering::Custom) {
SDValue Res = DAG.getNode(ISD::SDIVREM, dl, DAG.getVTList(VT, VT), Ops);
SplitInteger(Res.getValue(0), Lo, Hi);
return;
}
RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
if (VT == MVT::i16)
@ -2146,7 +2153,6 @@ void DAGTypeLegalizer::ExpandIntRes_SDIV(SDNode *N,
LC = RTLIB::SDIV_I128;
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SDIV!");
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, true, dl).first, Lo, Hi);
}
@ -2313,6 +2319,13 @@ void DAGTypeLegalizer::ExpandIntRes_SREM(SDNode *N,
SDValue &Lo, SDValue &Hi) {
EVT VT = N->getValueType(0);
SDLoc dl(N);
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
if (TLI.getOperationAction(ISD::SDIVREM, VT) == TargetLowering::Custom) {
SDValue Res = DAG.getNode(ISD::SDIVREM, dl, DAG.getVTList(VT, VT), Ops);
SplitInteger(Res.getValue(1), Lo, Hi);
return;
}
RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
if (VT == MVT::i16)
@ -2325,7 +2338,6 @@ void DAGTypeLegalizer::ExpandIntRes_SREM(SDNode *N,
LC = RTLIB::SREM_I128;
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SREM!");
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, true, dl).first, Lo, Hi);
}
@ -2454,6 +2466,13 @@ void DAGTypeLegalizer::ExpandIntRes_UDIV(SDNode *N,
SDValue &Lo, SDValue &Hi) {
EVT VT = N->getValueType(0);
SDLoc dl(N);
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
if (TLI.getOperationAction(ISD::UDIVREM, VT) == TargetLowering::Custom) {
SDValue Res = DAG.getNode(ISD::UDIVREM, dl, DAG.getVTList(VT, VT), Ops);
SplitInteger(Res.getValue(0), Lo, Hi);
return;
}
RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
if (VT == MVT::i16)
@ -2466,7 +2485,6 @@ void DAGTypeLegalizer::ExpandIntRes_UDIV(SDNode *N,
LC = RTLIB::UDIV_I128;
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UDIV!");
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, false, dl).first, Lo, Hi);
}
@ -2474,6 +2492,13 @@ void DAGTypeLegalizer::ExpandIntRes_UREM(SDNode *N,
SDValue &Lo, SDValue &Hi) {
EVT VT = N->getValueType(0);
SDLoc dl(N);
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
if (TLI.getOperationAction(ISD::UDIVREM, VT) == TargetLowering::Custom) {
SDValue Res = DAG.getNode(ISD::UDIVREM, dl, DAG.getVTList(VT, VT), Ops);
SplitInteger(Res.getValue(1), Lo, Hi);
return;
}
RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
if (VT == MVT::i16)
@ -2486,7 +2511,6 @@ void DAGTypeLegalizer::ExpandIntRes_UREM(SDNode *N,
LC = RTLIB::UREM_I128;
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UREM!");
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, false, dl).first, Lo, Hi);
}