aboutsummaryrefslogtreecommitdiff
path: root/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp')
-rw-r--r--lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp304
1 files changed, 214 insertions, 90 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
index 9f060a09a0f35..cd114d668e203 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
@@ -53,6 +53,7 @@ void DAGTypeLegalizer::PromoteIntegerResult(SDNode *N, unsigned ResNo) {
case ISD::AssertSext: Res = PromoteIntRes_AssertSext(N); break;
case ISD::AssertZext: Res = PromoteIntRes_AssertZext(N); break;
case ISD::BITCAST: Res = PromoteIntRes_BITCAST(N); break;
+ case ISD::BITREVERSE: Res = PromoteIntRes_BITREVERSE(N); break;
case ISD::BSWAP: Res = PromoteIntRes_BSWAP(N); break;
case ISD::BUILD_PAIR: Res = PromoteIntRes_BUILD_PAIR(N); break;
case ISD::Constant: Res = PromoteIntRes_Constant(N); break;
@@ -65,16 +66,20 @@ void DAGTypeLegalizer::PromoteIntegerResult(SDNode *N, unsigned ResNo) {
case ISD::CTTZ: Res = PromoteIntRes_CTTZ(N); break;
case ISD::EXTRACT_VECTOR_ELT:
Res = PromoteIntRes_EXTRACT_VECTOR_ELT(N); break;
- case ISD::LOAD: Res = PromoteIntRes_LOAD(cast<LoadSDNode>(N));break;
- case ISD::MLOAD: Res = PromoteIntRes_MLOAD(cast<MaskedLoadSDNode>(N));break;
+ case ISD::LOAD: Res = PromoteIntRes_LOAD(cast<LoadSDNode>(N)); break;
+ case ISD::MLOAD: Res = PromoteIntRes_MLOAD(cast<MaskedLoadSDNode>(N));
+ break;
+ case ISD::MGATHER: Res = PromoteIntRes_MGATHER(cast<MaskedGatherSDNode>(N));
+ break;
case ISD::SELECT: Res = PromoteIntRes_SELECT(N); break;
case ISD::VSELECT: Res = PromoteIntRes_VSELECT(N); break;
case ISD::SELECT_CC: Res = PromoteIntRes_SELECT_CC(N); break;
case ISD::SETCC: Res = PromoteIntRes_SETCC(N); break;
case ISD::SMIN:
- case ISD::SMAX:
+ case ISD::SMAX: Res = PromoteIntRes_SExtIntBinOp(N); break;
case ISD::UMIN:
- case ISD::UMAX: Res = PromoteIntRes_SimpleIntBinOp(N); break;
+ case ISD::UMAX: Res = PromoteIntRes_ZExtIntBinOp(N); break;
+
case ISD::SHL: Res = PromoteIntRes_SHL(N); break;
case ISD::SIGN_EXTEND_INREG:
Res = PromoteIntRes_SIGN_EXTEND_INREG(N); break;
@@ -114,10 +119,10 @@ void DAGTypeLegalizer::PromoteIntegerResult(SDNode *N, unsigned ResNo) {
case ISD::MUL: Res = PromoteIntRes_SimpleIntBinOp(N); break;
case ISD::SDIV:
- case ISD::SREM: Res = PromoteIntRes_SDIV(N); break;
+ case ISD::SREM: Res = PromoteIntRes_SExtIntBinOp(N); break;
case ISD::UDIV:
- case ISD::UREM: Res = PromoteIntRes_UDIV(N); break;
+ case ISD::UREM: Res = PromoteIntRes_ZExtIntBinOp(N); break;
case ISD::SADDO:
case ISD::SSUBO: Res = PromoteIntRes_SADDSUBO(N, ResNo); break;
@@ -180,7 +185,7 @@ SDValue DAGTypeLegalizer::PromoteIntRes_Atomic0(AtomicSDNode *N) {
N->getChain(), N->getBasePtr(),
N->getMemOperand(), N->getOrdering(),
N->getSynchScope());
- // Legalized the chain result - switch anything that used the old chain to
+ // Legalize the chain result - switch anything that used the old chain to
// use the new one.
ReplaceValueWith(SDValue(N, 1), Res.getValue(1));
return Res;
@@ -193,7 +198,7 @@ SDValue DAGTypeLegalizer::PromoteIntRes_Atomic1(AtomicSDNode *N) {
N->getChain(), N->getBasePtr(),
Op2, N->getMemOperand(), N->getOrdering(),
N->getSynchScope());
- // Legalized the chain result - switch anything that used the old chain to
+ // Legalize the chain result - switch anything that used the old chain to
// use the new one.
ReplaceValueWith(SDValue(N, 1), Res.getValue(1));
return Res;
@@ -316,6 +321,19 @@ SDValue DAGTypeLegalizer::PromoteIntRes_BSWAP(SDNode *N) {
TLI.getShiftAmountTy(NVT, DAG.getDataLayout())));
}
+SDValue DAGTypeLegalizer::PromoteIntRes_BITREVERSE(SDNode *N) {
+ SDValue Op = GetPromotedInteger(N->getOperand(0));
+ EVT OVT = N->getValueType(0);
+ EVT NVT = Op.getValueType();
+ SDLoc dl(N);
+
+ unsigned DiffBits = NVT.getScalarSizeInBits() - OVT.getScalarSizeInBits();
+ return DAG.getNode(
+ ISD::SRL, dl, NVT, DAG.getNode(ISD::BITREVERSE, dl, NVT, Op),
+ DAG.getConstant(DiffBits, dl,
+ TLI.getShiftAmountTy(NVT, DAG.getDataLayout())));
+}
+
SDValue DAGTypeLegalizer::PromoteIntRes_BUILD_PAIR(SDNode *N) {
// The pair element type may be legal, or may not promote to the same type as
// the result, for example i14 = BUILD_PAIR (i7, i7). Handle all cases.
@@ -465,7 +483,7 @@ SDValue DAGTypeLegalizer::PromoteIntRes_LOAD(LoadSDNode *N) {
SDValue Res = DAG.getExtLoad(ExtType, dl, NVT, N->getChain(), N->getBasePtr(),
N->getMemoryVT(), N->getMemOperand());
- // Legalized the chain result - switch anything that used the old chain to
+ // Legalize the chain result - switch anything that used the old chain to
// use the new one.
ReplaceValueWith(SDValue(N, 1), Res.getValue(1));
return Res;
@@ -475,20 +493,34 @@ SDValue DAGTypeLegalizer::PromoteIntRes_MLOAD(MaskedLoadSDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue ExtSrc0 = GetPromotedInteger(N->getSrc0());
- SDValue Mask = N->getMask();
- EVT NewMaskVT = getSetCCResultType(NVT);
- if (NewMaskVT != N->getMask().getValueType())
- Mask = PromoteTargetBoolean(Mask, NewMaskVT);
SDLoc dl(N);
-
SDValue Res = DAG.getMaskedLoad(NVT, dl, N->getChain(), N->getBasePtr(),
- Mask, ExtSrc0, N->getMemoryVT(),
+ N->getMask(), ExtSrc0, N->getMemoryVT(),
N->getMemOperand(), ISD::SEXTLOAD);
- // Legalized the chain result - switch anything that used the old chain to
+ // Legalize the chain result - switch anything that used the old chain to
+ // use the new one.
+ ReplaceValueWith(SDValue(N, 1), Res.getValue(1));
+ return Res;
+}
+
+SDValue DAGTypeLegalizer::PromoteIntRes_MGATHER(MaskedGatherSDNode *N) {
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
+ SDValue ExtSrc0 = GetPromotedInteger(N->getValue());
+ assert(NVT == ExtSrc0.getValueType() &&
+ "Gather result type and the passThru agrument type should be the same");
+
+ SDLoc dl(N);
+ SDValue Ops[] = {N->getChain(), ExtSrc0, N->getMask(), N->getBasePtr(),
+ N->getIndex()};
+ SDValue Res = DAG.getMaskedGather(DAG.getVTList(NVT, MVT::Other),
+ N->getMemoryVT(), dl, Ops,
+ N->getMemOperand());
+ // Legalize the chain result - switch anything that used the old chain to
// use the new one.
ReplaceValueWith(SDValue(N, 1), Res.getValue(1));
return Res;
}
+
/// Promote the overflow flag of an overflowing arithmetic node.
SDValue DAGTypeLegalizer::PromoteIntRes_Overflow(SDNode *N) {
// Simply change the return type of the boolean result.
@@ -534,14 +566,6 @@ SDValue DAGTypeLegalizer::PromoteIntRes_SADDSUBO(SDNode *N, unsigned ResNo) {
return Res;
}
-SDValue DAGTypeLegalizer::PromoteIntRes_SDIV(SDNode *N) {
- // Sign extend the input.
- SDValue LHS = SExtPromotedInteger(N->getOperand(0));
- SDValue RHS = SExtPromotedInteger(N->getOperand(1));
- return DAG.getNode(N->getOpcode(), SDLoc(N),
- LHS.getValueType(), LHS, RHS);
-}
-
SDValue DAGTypeLegalizer::PromoteIntRes_SELECT(SDNode *N) {
SDValue LHS = GetPromotedInteger(N->getOperand(1));
SDValue RHS = GetPromotedInteger(N->getOperand(2));
@@ -629,6 +653,22 @@ SDValue DAGTypeLegalizer::PromoteIntRes_SimpleIntBinOp(SDNode *N) {
LHS.getValueType(), LHS, RHS);
}
+SDValue DAGTypeLegalizer::PromoteIntRes_SExtIntBinOp(SDNode *N) {
+ // Sign extend the input.
+ SDValue LHS = SExtPromotedInteger(N->getOperand(0));
+ SDValue RHS = SExtPromotedInteger(N->getOperand(1));
+ return DAG.getNode(N->getOpcode(), SDLoc(N),
+ LHS.getValueType(), LHS, RHS);
+}
+
+SDValue DAGTypeLegalizer::PromoteIntRes_ZExtIntBinOp(SDNode *N) {
+ // Zero extend the input.
+ SDValue LHS = ZExtPromotedInteger(N->getOperand(0));
+ SDValue RHS = ZExtPromotedInteger(N->getOperand(1));
+ return DAG.getNode(N->getOpcode(), SDLoc(N),
+ LHS.getValueType(), LHS, RHS);
+}
+
SDValue DAGTypeLegalizer::PromoteIntRes_SRA(SDNode *N) {
SDValue LHS = N->getOperand(0);
SDValue RHS = N->getOperand(1);
@@ -770,14 +810,6 @@ SDValue DAGTypeLegalizer::PromoteIntRes_XMULO(SDNode *N, unsigned ResNo) {
return Mul;
}
-SDValue DAGTypeLegalizer::PromoteIntRes_UDIV(SDNode *N) {
- // Zero extend the input.
- SDValue LHS = ZExtPromotedInteger(N->getOperand(0));
- SDValue RHS = ZExtPromotedInteger(N->getOperand(1));
- return DAG.getNode(N->getOpcode(), SDLoc(N),
- LHS.getValueType(), LHS, RHS);
-}
-
SDValue DAGTypeLegalizer::PromoteIntRes_UNDEF(SDNode *N) {
return DAG.getUNDEF(TLI.getTypeToTransformTo(*DAG.getContext(),
N->getValueType(0)));
@@ -875,6 +907,10 @@ bool DAGTypeLegalizer::PromoteIntegerOperand(SDNode *N, unsigned OpNo) {
OpNo); break;
case ISD::MLOAD: Res = PromoteIntOp_MLOAD(cast<MaskedLoadSDNode>(N),
OpNo); break;
+ case ISD::MGATHER: Res = PromoteIntOp_MGATHER(cast<MaskedGatherSDNode>(N),
+ OpNo); break;
+ case ISD::MSCATTER: Res = PromoteIntOp_MSCATTER(cast<MaskedScatterSDNode>(N),
+ OpNo); break;
case ISD::TRUNCATE: Res = PromoteIntOp_TRUNCATE(N); break;
case ISD::FP16_TO_FP:
case ISD::UINT_TO_FP: Res = PromoteIntOp_UINT_TO_FP(N); break;
@@ -1143,56 +1179,49 @@ SDValue DAGTypeLegalizer::PromoteIntOp_STORE(StoreSDNode *N, unsigned OpNo){
N->getMemoryVT(), N->getMemOperand());
}
-SDValue DAGTypeLegalizer::PromoteIntOp_MSTORE(MaskedStoreSDNode *N, unsigned OpNo){
+SDValue DAGTypeLegalizer::PromoteIntOp_MSTORE(MaskedStoreSDNode *N,
+ unsigned OpNo) {
SDValue DataOp = N->getValue();
EVT DataVT = DataOp.getValueType();
SDValue Mask = N->getMask();
- EVT MaskVT = Mask.getValueType();
SDLoc dl(N);
bool TruncateStore = false;
- if (!TLI.isTypeLegal(DataVT)) {
- if (getTypeAction(DataVT) == TargetLowering::TypePromoteInteger) {
- DataOp = GetPromotedInteger(DataOp);
- if (!TLI.isTypeLegal(MaskVT))
- Mask = PromoteTargetBoolean(Mask, DataOp.getValueType());
- TruncateStore = true;
- }
+ if (OpNo == 2) {
+ // Mask comes before the data operand. If the data operand is legal, we just
+ // promote the mask.
+ // When the data operand has illegal type, we should legalize the data
+ // operand first. The mask will be promoted/splitted/widened according to
+ // the data operand type.
+ if (TLI.isTypeLegal(DataVT))
+ Mask = PromoteTargetBoolean(Mask, DataVT);
else {
- assert(getTypeAction(DataVT) == TargetLowering::TypeWidenVector &&
- "Unexpected data legalization in MSTORE");
- DataOp = GetWidenedVector(DataOp);
-
- if (getTypeAction(MaskVT) == TargetLowering::TypeWidenVector)
- Mask = GetWidenedVector(Mask);
- else {
- EVT BoolVT = getSetCCResultType(DataOp.getValueType());
+ if (getTypeAction(DataVT) == TargetLowering::TypePromoteInteger)
+ return PromoteIntOp_MSTORE(N, 3);
- // We can't use ModifyToType() because we should fill the mask with
- // zeroes
- unsigned WidenNumElts = BoolVT.getVectorNumElements();
- unsigned MaskNumElts = MaskVT.getVectorNumElements();
+ else if (getTypeAction(DataVT) == TargetLowering::TypeWidenVector)
+ return WidenVecOp_MSTORE(N, 3);
- unsigned NumConcat = WidenNumElts / MaskNumElts;
- SmallVector<SDValue, 16> Ops(NumConcat);
- SDValue ZeroVal = DAG.getConstant(0, dl, MaskVT);
- Ops[0] = Mask;
- for (unsigned i = 1; i != NumConcat; ++i)
- Ops[i] = ZeroVal;
-
- Mask = DAG.getNode(ISD::CONCAT_VECTORS, dl, BoolVT, Ops);
+ else {
+ assert (getTypeAction(DataVT) == TargetLowering::TypeSplitVector);
+ return SplitVecOp_MSTORE(N, 3);
}
}
+ } else { // Data operand
+ assert(OpNo == 3 && "Unexpected operand for promotion");
+ DataOp = GetPromotedInteger(DataOp);
+ Mask = PromoteTargetBoolean(Mask, DataOp.getValueType());
+ TruncateStore = true;
}
- else
- Mask = PromoteTargetBoolean(N->getMask(), DataOp.getValueType());
+
return DAG.getMaskedStore(N->getChain(), dl, DataOp, N->getBasePtr(), Mask,
N->getMemoryVT(), N->getMemOperand(),
TruncateStore);
}
-SDValue DAGTypeLegalizer::PromoteIntOp_MLOAD(MaskedLoadSDNode *N, unsigned OpNo){
+SDValue DAGTypeLegalizer::PromoteIntOp_MLOAD(MaskedLoadSDNode *N,
+ unsigned OpNo) {
assert(OpNo == 2 && "Only know how to promote the mask!");
EVT DataVT = N->getValueType(0);
SDValue Mask = PromoteTargetBoolean(N->getOperand(OpNo), DataVT);
@@ -1201,6 +1230,31 @@ SDValue DAGTypeLegalizer::PromoteIntOp_MLOAD(MaskedLoadSDNode *N, unsigned OpNo)
return SDValue(DAG.UpdateNodeOperands(N, NewOps), 0);
}
+SDValue DAGTypeLegalizer::PromoteIntOp_MGATHER(MaskedGatherSDNode *N,
+ unsigned OpNo) {
+
+ SmallVector<SDValue, 5> NewOps(N->op_begin(), N->op_end());
+ if (OpNo == 2) {
+ // The Mask
+ EVT DataVT = N->getValueType(0);
+ NewOps[OpNo] = PromoteTargetBoolean(N->getOperand(OpNo), DataVT);
+ } else
+ NewOps[OpNo] = GetPromotedInteger(N->getOperand(OpNo));
+ return SDValue(DAG.UpdateNodeOperands(N, NewOps), 0);
+}
+
+SDValue DAGTypeLegalizer::PromoteIntOp_MSCATTER(MaskedScatterSDNode *N,
+ unsigned OpNo) {
+ SmallVector<SDValue, 5> NewOps(N->op_begin(), N->op_end());
+ if (OpNo == 2) {
+ // The Mask
+ EVT DataVT = N->getValue().getValueType();
+ NewOps[OpNo] = PromoteTargetBoolean(N->getOperand(OpNo), DataVT);
+ } else
+ NewOps[OpNo] = GetPromotedInteger(N->getOperand(OpNo));
+ return SDValue(DAG.UpdateNodeOperands(N, NewOps), 0);
+}
+
SDValue DAGTypeLegalizer::PromoteIntOp_TRUNCATE(SDNode *N) {
SDValue Op = GetPromotedInteger(N->getOperand(0));
return DAG.getNode(ISD::TRUNCATE, SDLoc(N), N->getValueType(0), Op);
@@ -1259,6 +1313,7 @@ void DAGTypeLegalizer::ExpandIntegerResult(SDNode *N, unsigned ResNo) {
case ISD::ANY_EXTEND: ExpandIntRes_ANY_EXTEND(N, Lo, Hi); break;
case ISD::AssertSext: ExpandIntRes_AssertSext(N, Lo, Hi); break;
case ISD::AssertZext: ExpandIntRes_AssertZext(N, Lo, Hi); break;
+ case ISD::BITREVERSE: ExpandIntRes_BITREVERSE(N, Lo, Hi); break;
case ISD::BSWAP: ExpandIntRes_BSWAP(N, Lo, Hi); break;
case ISD::Constant: ExpandIntRes_Constant(N, Lo, Hi); break;
case ISD::CTLZ_ZERO_UNDEF:
@@ -1270,6 +1325,7 @@ void DAGTypeLegalizer::ExpandIntegerResult(SDNode *N, unsigned ResNo) {
case ISD::FP_TO_UINT: ExpandIntRes_FP_TO_UINT(N, Lo, Hi); break;
case ISD::LOAD: ExpandIntRes_LOAD(cast<LoadSDNode>(N), Lo, Hi); break;
case ISD::MUL: ExpandIntRes_MUL(N, Lo, Hi); break;
+ case ISD::READCYCLECOUNTER: ExpandIntRes_READCYCLECOUNTER(N, Lo, Hi); break;
case ISD::SDIV: ExpandIntRes_SDIV(N, Lo, Hi); break;
case ISD::SIGN_EXTEND: ExpandIntRes_SIGN_EXTEND(N, Lo, Hi); break;
case ISD::SIGN_EXTEND_INREG: ExpandIntRes_SIGN_EXTEND_INREG(N, Lo, Hi); break;
@@ -1763,12 +1819,6 @@ void DAGTypeLegalizer::ExpandIntRes_ADDSUBE(SDNode *N,
ReplaceValueWith(SDValue(N, 1), Hi.getValue(1));
}
-void DAGTypeLegalizer::ExpandIntRes_MERGE_VALUES(SDNode *N, unsigned ResNo,
- SDValue &Lo, SDValue &Hi) {
- SDValue Res = DisintegrateMERGE_VALUES(N, ResNo);
- SplitInteger(Res, Lo, Hi);
-}
-
void DAGTypeLegalizer::ExpandIntRes_ANY_EXTEND(SDNode *N,
SDValue &Lo, SDValue &Hi) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
@@ -1834,6 +1884,14 @@ void DAGTypeLegalizer::ExpandIntRes_AssertZext(SDNode *N,
}
}
+void DAGTypeLegalizer::ExpandIntRes_BITREVERSE(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDLoc dl(N);
+ GetExpandedInteger(N->getOperand(0), Hi, Lo); // Note swapped operands.
+ Lo = DAG.getNode(ISD::BITREVERSE, dl, Lo.getValueType(), Lo);
+ Hi = DAG.getNode(ISD::BITREVERSE, dl, Hi.getValueType(), Hi);
+}
+
void DAGTypeLegalizer::ExpandIntRes_BSWAP(SDNode *N,
SDValue &Lo, SDValue &Hi) {
SDLoc dl(N);
@@ -1918,8 +1976,7 @@ void DAGTypeLegalizer::ExpandIntRes_FP_TO_SINT(SDNode *N, SDValue &Lo,
RTLIB::Libcall LC = RTLIB::getFPTOSINT(Op.getValueType(), VT);
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fp-to-sint conversion!");
- SplitInteger(TLI.makeLibCall(DAG, LC, VT, &Op, 1, true/*irrelevant*/,
- dl).first,
+ SplitInteger(TLI.makeLibCall(DAG, LC, VT, Op, true/*irrelevant*/, dl).first,
Lo, Hi);
}
@@ -1934,8 +1991,7 @@ void DAGTypeLegalizer::ExpandIntRes_FP_TO_UINT(SDNode *N, SDValue &Lo,
RTLIB::Libcall LC = RTLIB::getFPTOUINT(Op.getValueType(), VT);
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unexpected fp-to-uint conversion!");
- SplitInteger(TLI.makeLibCall(DAG, LC, VT, &Op, 1, false/*irrelevant*/,
- dl).first,
+ SplitInteger(TLI.makeLibCall(DAG, LC, VT, Op, false/*irrelevant*/, dl).first,
Lo, Hi);
}
@@ -2055,7 +2111,7 @@ void DAGTypeLegalizer::ExpandIntRes_LOAD(LoadSDNode *N,
}
}
- // Legalized the chain result - switch anything that used the old chain to
+ // Legalize the chain result - switch anything that used the old chain to
// use the new one.
ReplaceValueWith(SDValue(N, 1), Ch);
}
@@ -2096,11 +2152,21 @@ void DAGTypeLegalizer::ExpandIntRes_MUL(SDNode *N,
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported MUL!");
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
- SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, true/*irrelevant*/,
- dl).first,
+ SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, true/*irrelevant*/, dl).first,
Lo, Hi);
}
+void DAGTypeLegalizer::ExpandIntRes_READCYCLECOUNTER(SDNode *N, SDValue &Lo,
+ SDValue &Hi) {
+ SDLoc DL(N);
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
+ SDVTList VTs = DAG.getVTList(NVT, NVT, MVT::Other);
+ SDValue R = DAG.getNode(N->getOpcode(), DL, VTs, N->getOperand(0));
+ Lo = R.getValue(0);
+ Hi = R.getValue(1);
+ ReplaceValueWith(SDValue(N, 1), R.getValue(2));
+}
+
void DAGTypeLegalizer::ExpandIntRes_SADDSUBO(SDNode *Node,
SDValue &Lo, SDValue &Hi) {
SDValue LHS = Node->getOperand(0);
@@ -2166,7 +2232,7 @@ void DAGTypeLegalizer::ExpandIntRes_SDIV(SDNode *N,
LC = RTLIB::SDIV_I128;
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SDIV!");
- SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, true, dl).first, Lo, Hi);
+ SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, true, dl).first, Lo, Hi);
}
void DAGTypeLegalizer::ExpandIntRes_Shift(SDNode *N,
@@ -2261,8 +2327,7 @@ void DAGTypeLegalizer::ExpandIntRes_Shift(SDNode *N,
if (LC != RTLIB::UNKNOWN_LIBCALL && TLI.getLibcallName(LC)) {
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
- SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, isSigned, dl).first, Lo,
- Hi);
+ SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, isSigned, dl).first, Lo, Hi);
return;
}
@@ -2352,7 +2417,7 @@ void DAGTypeLegalizer::ExpandIntRes_SREM(SDNode *N,
LC = RTLIB::SREM_I128;
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SREM!");
- SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, true, dl).first, Lo, Hi);
+ SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, true, dl).first, Lo, Hi);
}
void DAGTypeLegalizer::ExpandIntRes_TRUNCATE(SDNode *N,
@@ -2499,7 +2564,7 @@ void DAGTypeLegalizer::ExpandIntRes_UDIV(SDNode *N,
LC = RTLIB::UDIV_I128;
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UDIV!");
- SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, false, dl).first, Lo, Hi);
+ SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, false, dl).first, Lo, Hi);
}
void DAGTypeLegalizer::ExpandIntRes_UREM(SDNode *N,
@@ -2525,7 +2590,7 @@ void DAGTypeLegalizer::ExpandIntRes_UREM(SDNode *N,
LC = RTLIB::UREM_I128;
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UREM!");
- SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, 2, false, dl).first, Lo, Hi);
+ SplitInteger(TLI.makeLibCall(DAG, LC, VT, Ops, false, dl).first, Lo, Hi);
}
void DAGTypeLegalizer::ExpandIntRes_ZERO_EXTEND(SDNode *N,
@@ -2605,6 +2670,7 @@ bool DAGTypeLegalizer::ExpandIntegerOperand(SDNode *N, unsigned OpNo) {
case ISD::SCALAR_TO_VECTOR: Res = ExpandOp_SCALAR_TO_VECTOR(N); break;
case ISD::SELECT_CC: Res = ExpandIntOp_SELECT_CC(N); break;
case ISD::SETCC: Res = ExpandIntOp_SETCC(N); break;
+ case ISD::SETCCE: Res = ExpandIntOp_SETCCE(N); break;
case ISD::SINT_TO_FP: Res = ExpandIntOp_SINT_TO_FP(N); break;
case ISD::STORE: Res = ExpandIntOp_STORE(cast<StoreSDNode>(N), OpNo); break;
case ISD::TRUNCATE: Res = ExpandIntOp_TRUNCATE(N); break;
@@ -2732,6 +2798,47 @@ void DAGTypeLegalizer::IntegerExpandSetCCOperands(SDValue &NewLHS,
return;
}
+ if (LHSHi == RHSHi) {
+ // Comparing the low bits is enough.
+ NewLHS = Tmp1;
+ NewRHS = SDValue();
+ return;
+ }
+
+ // Lower with SETCCE if the target supports it.
+ // FIXME: Make all targets support this, then remove the other lowering.
+ if (TLI.getOperationAction(
+ ISD::SETCCE,
+ TLI.getTypeToExpandTo(*DAG.getContext(), LHSLo.getValueType())) ==
+ TargetLowering::Custom) {
+ // SETCCE can detect < and >= directly. For > and <=, flip operands and
+ // condition code.
+ bool FlipOperands = false;
+ switch (CCCode) {
+ case ISD::SETGT: CCCode = ISD::SETLT; FlipOperands = true; break;
+ case ISD::SETUGT: CCCode = ISD::SETULT; FlipOperands = true; break;
+ case ISD::SETLE: CCCode = ISD::SETGE; FlipOperands = true; break;
+ case ISD::SETULE: CCCode = ISD::SETUGE; FlipOperands = true; break;
+ default: break;
+ }
+ if (FlipOperands) {
+ std::swap(LHSLo, RHSLo);
+ std::swap(LHSHi, RHSHi);
+ }
+ // Perform a wide subtraction, feeding the carry from the low part into
+ // SETCCE. The SETCCE operation is essentially looking at the high part of
+ // the result of LHS - RHS. It is negative iff LHS < RHS. It is zero or
+ // positive iff LHS >= RHS.
+ SDVTList VTList = DAG.getVTList(LHSLo.getValueType(), MVT::Glue);
+ SDValue LowCmp = DAG.getNode(ISD::SUBC, dl, VTList, LHSLo, RHSLo);
+ SDValue Res =
+ DAG.getNode(ISD::SETCCE, dl, getSetCCResultType(LHSLo.getValueType()),
+ LHSHi, RHSHi, LowCmp.getValue(1), DAG.getCondCode(CCCode));
+ NewLHS = Res;
+ NewRHS = SDValue();
+ return;
+ }
+
NewLHS = TLI.SimplifySetCC(getSetCCResultType(LHSHi.getValueType()),
LHSHi, RHSHi, ISD::SETEQ, false,
DagCombineInfo, dl);
@@ -2796,6 +2903,24 @@ SDValue DAGTypeLegalizer::ExpandIntOp_SETCC(SDNode *N) {
DAG.getCondCode(CCCode)), 0);
}
+SDValue DAGTypeLegalizer::ExpandIntOp_SETCCE(SDNode *N) {
+ SDValue LHS = N->getOperand(0);
+ SDValue RHS = N->getOperand(1);
+ SDValue Carry = N->getOperand(2);
+ SDValue Cond = N->getOperand(3);
+ SDLoc dl = SDLoc(N);
+
+ SDValue LHSLo, LHSHi, RHSLo, RHSHi;
+ GetExpandedInteger(LHS, LHSLo, LHSHi);
+ GetExpandedInteger(RHS, RHSLo, RHSHi);
+
+ // Expand to a SUBE for the low part and a smaller SETCCE for the high.
+ SDVTList VTList = DAG.getVTList(LHSLo.getValueType(), MVT::Glue);
+ SDValue LowCmp = DAG.getNode(ISD::SUBE, dl, VTList, LHSLo, RHSLo, Carry);
+ return DAG.getNode(ISD::SETCCE, dl, N->getValueType(0), LHSHi, RHSHi,
+ LowCmp.getValue(1), Cond);
+}
+
SDValue DAGTypeLegalizer::ExpandIntOp_Shift(SDNode *N) {
// The value being shifted is legal, but the shift amount is too big.
// It follows that either the result of the shift is undefined, or the
@@ -2820,7 +2945,7 @@ SDValue DAGTypeLegalizer::ExpandIntOp_SINT_TO_FP(SDNode *N) {
RTLIB::Libcall LC = RTLIB::getSINTTOFP(Op.getValueType(), DstVT);
assert(LC != RTLIB::UNKNOWN_LIBCALL &&
"Don't know how to expand this SINT_TO_FP!");
- return TLI.makeLibCall(DAG, LC, DstVT, &Op, 1, true, SDLoc(N)).first;
+ return TLI.makeLibCall(DAG, LC, DstVT, Op, true, SDLoc(N)).first;
}
SDValue DAGTypeLegalizer::ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo) {
@@ -2980,11 +3105,10 @@ SDValue DAGTypeLegalizer::ExpandIntOp_UINT_TO_FP(SDNode *N) {
// Load the value out, extending it from f32 to the destination float type.
// FIXME: Avoid the extend by constructing the right constant pool?
- SDValue Fudge = DAG.getExtLoad(ISD::EXTLOAD, dl, DstVT, DAG.getEntryNode(),
- FudgePtr,
- MachinePointerInfo::getConstantPool(),
- MVT::f32,
- false, false, false, Alignment);
+ SDValue Fudge = DAG.getExtLoad(
+ ISD::EXTLOAD, dl, DstVT, DAG.getEntryNode(), FudgePtr,
+ MachinePointerInfo::getConstantPool(DAG.getMachineFunction()), MVT::f32,
+ false, false, false, Alignment);
return DAG.getNode(ISD::FADD, dl, DstVT, SignedConv, Fudge);
}
@@ -2992,7 +3116,7 @@ SDValue DAGTypeLegalizer::ExpandIntOp_UINT_TO_FP(SDNode *N) {
RTLIB::Libcall LC = RTLIB::getUINTTOFP(SrcVT, DstVT);
assert(LC != RTLIB::UNKNOWN_LIBCALL &&
"Don't know how to expand this UINT_TO_FP!");
- return TLI.makeLibCall(DAG, LC, DstVT, &Op, 1, true, dl).first;
+ return TLI.makeLibCall(DAG, LC, DstVT, Op, true, dl).first;
}
SDValue DAGTypeLegalizer::ExpandIntOp_ATOMIC_STORE(SDNode *N) {
generated by cgit v1.3 (git 2.53.0) at 2026-05-31 21:23:15 +0000