case ISD::EXTRACT_VECTOR_ELT:
R = SoftenFloatRes_EXTRACT_VECTOR_ELT(N); break;
case ISD::FABS: R = SoftenFloatRes_FABS(N); break;
+ case ISD::FMINNUM: R = SoftenFloatRes_FMINNUM(N); break;
+ case ISD::FMAXNUM: R = SoftenFloatRes_FMAXNUM(N); break;
case ISD::FADD: R = SoftenFloatRes_FADD(N); break;
case ISD::FCEIL: R = SoftenFloatRes_FCEIL(N); break;
case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N); break;
}
SDValue DAGTypeLegalizer::SoftenFloatRes_ConstantFP(ConstantFPSDNode *N) {
- return DAG.getConstant(N->getValueAPF().bitcastToAPInt(),
+ return DAG.getConstant(N->getValueAPF().bitcastToAPInt(), SDLoc(N),
TLI.getTypeToTransformTo(*DAG.getContext(),
N->getValueType(0)));
}
// Mask = ~(1 << (Size-1))
APInt API = APInt::getAllOnesValue(Size);
- API.clearBit(Size-1);
- SDValue Mask = DAG.getConstant(API, NVT);
+ API.clearBit(Size - 1);
+ SDValue Mask = DAG.getConstant(API, SDLoc(N), NVT);
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return DAG.getNode(ISD::AND, SDLoc(N), NVT, Op, Mask);
}
+SDValue DAGTypeLegalizer::SoftenFloatRes_FMINNUM(SDNode *N) {
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
+ SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
+ GetSoftenedFloat(N->getOperand(1)) };
+ return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
+ RTLIB::FMIN_F32,
+ RTLIB::FMIN_F64,
+ RTLIB::FMIN_F80,
+ RTLIB::FMIN_F128,
+ RTLIB::FMIN_PPCF128),
+ NVT, Ops, 2, false, SDLoc(N)).first;
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FMAXNUM(SDNode *N) {
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
+ SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
+ GetSoftenedFloat(N->getOperand(1)) };
+ return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
+ RTLIB::FMAX_F32,
+ RTLIB::FMAX_F64,
+ RTLIB::FMAX_F80,
+ RTLIB::FMAX_F128,
+ RTLIB::FMAX_PPCF128),
+ NVT, Ops, 2, false, SDLoc(N)).first;
+}
+
SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
unsigned RSize = RVT.getSizeInBits();
// First get the sign bit of second operand.
- SDValue SignBit = DAG.getNode(ISD::SHL, dl, RVT, DAG.getConstant(1, RVT),
- DAG.getConstant(RSize - 1,
- TLI.getShiftAmountTy(RVT)));
+ SDValue SignBit = DAG.getNode(
+ ISD::SHL, dl, RVT, DAG.getConstant(1, dl, RVT),
+ DAG.getConstant(RSize - 1, dl,
+ TLI.getShiftAmountTy(RVT, DAG.getDataLayout())));
SignBit = DAG.getNode(ISD::AND, dl, RVT, RHS, SignBit);
// Shift right or sign-extend it if the two operands have different types.
int SizeDiff = RVT.getSizeInBits() - LVT.getSizeInBits();
if (SizeDiff > 0) {
- SignBit = DAG.getNode(ISD::SRL, dl, RVT, SignBit,
- DAG.getConstant(SizeDiff,
- TLI.getShiftAmountTy(SignBit.getValueType())));
+ SignBit =
+ DAG.getNode(ISD::SRL, dl, RVT, SignBit,
+ DAG.getConstant(SizeDiff, dl,
+ TLI.getShiftAmountTy(SignBit.getValueType(),
+ DAG.getDataLayout())));
SignBit = DAG.getNode(ISD::TRUNCATE, dl, LVT, SignBit);
} else if (SizeDiff < 0) {
SignBit = DAG.getNode(ISD::ANY_EXTEND, dl, LVT, SignBit);
- SignBit = DAG.getNode(ISD::SHL, dl, LVT, SignBit,
- DAG.getConstant(-SizeDiff,
- TLI.getShiftAmountTy(SignBit.getValueType())));
+ SignBit =
+ DAG.getNode(ISD::SHL, dl, LVT, SignBit,
+ DAG.getConstant(-SizeDiff, dl,
+ TLI.getShiftAmountTy(SignBit.getValueType(),
+ DAG.getDataLayout())));
}
// Clear the sign bit of the first operand.
- SDValue Mask = DAG.getNode(ISD::SHL, dl, LVT, DAG.getConstant(1, LVT),
- DAG.getConstant(LSize - 1,
- TLI.getShiftAmountTy(LVT)));
- Mask = DAG.getNode(ISD::SUB, dl, LVT, Mask, DAG.getConstant(1, LVT));
+ SDValue Mask = DAG.getNode(
+ ISD::SHL, dl, LVT, DAG.getConstant(1, dl, LVT),
+ DAG.getConstant(LSize - 1, dl,
+ TLI.getShiftAmountTy(LVT, DAG.getDataLayout())));
+ Mask = DAG.getNode(ISD::SUB, dl, LVT, Mask, DAG.getConstant(1, dl, LVT));
LHS = DAG.getNode(ISD::AND, dl, LVT, LHS, Mask);
// Or the value with the sign bit.
SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
+ SDLoc dl(N);
// Expand Y = FNEG(X) -> Y = SUB -0.0, X
- SDValue Ops[2] = { DAG.getConstantFP(-0.0, N->getValueType(0)),
+ SDValue Ops[2] = { DAG.getConstantFP(-0.0, dl, N->getValueType(0)),
GetSoftenedFloat(N->getOperand(0)) };
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::SUB_F32,
RTLIB::SUB_F80,
RTLIB::SUB_F128,
RTLIB::SUB_PPCF128),
- NVT, Ops, 2, false, SDLoc(N)).first;
+ NVT, Ops, 2, false, dl).first;
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue Op = N->getOperand(0);
+
+ // There's only a libcall for f16 -> f32, so proceed in two stages. Also, it's
+ // entirely possible for both f16 and f32 to be legal, so use the fully
+ // hard-float FP_EXTEND rather than FP16_TO_FP.
+ if (Op.getValueType() == MVT::f16 && N->getValueType(0) != MVT::f32) {
+ Op = DAG.getNode(ISD::FP_EXTEND, SDLoc(N), MVT::f32, Op);
+ if (getTypeAction(MVT::f32) == TargetLowering::TypeSoftenFloat)
+ SoftenFloatResult(Op.getNode(), 0);
+ }
+
RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0));
+ if (getTypeAction(Op.getValueType()) == TargetLowering::TypeSoftenFloat)
+ Op = GetSoftenedFloat(Op);
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!");
return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, SDLoc(N)).first;
}
SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
SDValue Op = N->getOperand(0);
+ if (N->getValueType(0) == MVT::f16) {
+ // Semi-soften first, to FP_TO_FP16, so that targets which support f16 as a
+ // storage-only type get a chance to select things.
+ return DAG.getNode(ISD::FP_TO_FP16, SDLoc(N), NVT, Op);
+ }
+
RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0));
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!");
return TLI.makeLibCall(DAG, LC, NVT, &Op, 1, false, SDLoc(N)).first;
SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
+ if (N->getValueType(0) == MVT::f16)
+ return DAG.getNode(ISD::FP_TO_FP16, SDLoc(N), NVT, N->getOperand(0));
+
SDValue Op = GetSoftenedFloat(N->getOperand(0));
return TLI.makeLibCall(DAG, GetFPLibCall(N->getValueType(0),
RTLIB::TRUNC_F32,
NVT, dl, L->getChain(), L->getBasePtr(), L->getOffset(),
L->getPointerInfo(), NVT, L->isVolatile(),
L->isNonTemporal(), false, L->getAlignment(),
- L->getTBAAInfo());
+ L->getAAInfo());
// Legalized the chain result - switch anything that used the old chain to
// use the new one.
ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
L->getBasePtr(), L->getOffset(), L->getPointerInfo(),
L->getMemoryVT(), L->isVolatile(),
L->isNonTemporal(), false, L->getAlignment(),
- L->getTBAAInfo());
+ L->getAAInfo());
// Legalized the chain result - switch anything that used the old chain to
// use the new one.
ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
NVT, N->getOperand(0));
return TLI.makeLibCall(DAG, LC,
TLI.getTypeToTransformTo(*DAG.getContext(), RVT),
- &Op, 1, false, dl).first;
+ &Op, 1, Signed, dl).first;
}
case ISD::BITCAST: Res = SoftenFloatOp_BITCAST(N); break;
case ISD::BR_CC: Res = SoftenFloatOp_BR_CC(N); break;
+ case ISD::FP_EXTEND: Res = SoftenFloatOp_FP_EXTEND(N); break;
case ISD::FP_TO_FP16: // Same as FP_ROUND for softening purposes
case ISD::FP_ROUND: Res = SoftenFloatOp_FP_ROUND(N); break;
case ISD::FP_TO_SINT: Res = SoftenFloatOp_FP_TO_SINT(N); break;
GetSoftenedFloat(N->getOperand(0)));
}
+SDValue DAGTypeLegalizer::SoftenFloatOp_FP_EXTEND(SDNode *N) {
+ // If we get here, the result must be legal but the source illegal.
+ EVT SVT = N->getOperand(0).getValueType();
+ EVT RVT = N->getValueType(0);
+ SDValue Op = GetSoftenedFloat(N->getOperand(0));
+
+ if (SVT == MVT::f16)
+ return DAG.getNode(ISD::FP16_TO_FP, SDLoc(N), RVT, Op);
+
+ RTLIB::Libcall LC = RTLIB::getFPEXT(SVT, RVT);
+ assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND libcall");
+
+ return TLI.makeLibCall(DAG, LC, RVT, &Op, 1, false, SDLoc(N)).first;
+}
+
+
SDValue DAGTypeLegalizer::SoftenFloatOp_FP_ROUND(SDNode *N) {
// We actually deal with the partially-softened FP_TO_FP16 node too, which
// returns an i16 so doesn't meet the constraints necessary for FP_ROUND.
// If softenSetCCOperands returned a scalar, we need to compare the result
// against zero to select between true and false values.
if (!NewRHS.getNode()) {
- NewRHS = DAG.getConstant(0, NewLHS.getValueType());
+ NewRHS = DAG.getConstant(0, SDLoc(N), NewLHS.getValueType());
CCCode = ISD::SETNE;
}
// If softenSetCCOperands returned a scalar, we need to compare the result
// against zero to select between true and false values.
if (!NewRHS.getNode()) {
- NewRHS = DAG.getConstant(0, NewLHS.getValueType());
+ NewRHS = DAG.getConstant(0, SDLoc(N), NewLHS.getValueType());
CCCode = ISD::SETNE;
}
if (ST->isTruncatingStore())
// Do an FP_ROUND followed by a non-truncating store.
Val = BitConvertToInteger(DAG.getNode(ISD::FP_ROUND, dl, ST->getMemoryVT(),
- Val, DAG.getIntPtrConstant(0)));
+ Val, DAG.getIntPtrConstant(0, dl)));
else
Val = GetSoftenedFloat(Val);
case ISD::ConstantFP: ExpandFloatRes_ConstantFP(N, Lo, Hi); break;
case ISD::FABS: ExpandFloatRes_FABS(N, Lo, Hi); break;
+ case ISD::FMINNUM: ExpandFloatRes_FMINNUM(N, Lo, Hi); break;
+ case ISD::FMAXNUM: ExpandFloatRes_FMAXNUM(N, Lo, Hi); break;
case ISD::FADD: ExpandFloatRes_FADD(N, Lo, Hi); break;
case ISD::FCEIL: ExpandFloatRes_FCEIL(N, Lo, Hi); break;
case ISD::FCOPYSIGN: ExpandFloatRes_FCOPYSIGN(N, Lo, Hi); break;
assert(NVT.getSizeInBits() == integerPartWidth &&
"Do not know how to expand this float constant!");
APInt C = cast<ConstantFPSDNode>(N)->getValueAPF().bitcastToAPInt();
+ SDLoc dl(N);
Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
APInt(integerPartWidth, C.getRawData()[1])),
- NVT);
+ dl, NVT);
Hi = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
APInt(integerPartWidth, C.getRawData()[0])),
- NVT);
+ dl, NVT);
}
void DAGTypeLegalizer::ExpandFloatRes_FABS(SDNode *N, SDValue &Lo,
ISD::SETEQ);
}
+void DAGTypeLegalizer::ExpandFloatRes_FMINNUM(SDNode *N, SDValue &Lo,
+ SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::FMIN_F32, RTLIB::FMIN_F64,
+ RTLIB::FMIN_F80, RTLIB::FMIN_F128,
+ RTLIB::FMIN_PPCF128),
+ N, false);
+ GetPairElements(Call, Lo, Hi);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FMAXNUM(SDNode *N, SDValue &Lo,
+ SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::FMAX_F32, RTLIB::FMAX_F64,
+ RTLIB::FMAX_F80, RTLIB::FMAX_F128,
+ RTLIB::FMAX_PPCF128),
+ N, false);
+ GetPairElements(Call, Lo, Hi);
+}
+
void DAGTypeLegalizer::ExpandFloatRes_FADD(SDNode *N, SDValue &Lo,
SDValue &Hi) {
SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
void DAGTypeLegalizer::ExpandFloatRes_FP_EXTEND(SDNode *N, SDValue &Lo,
SDValue &Hi) {
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
- Hi = DAG.getNode(ISD::FP_EXTEND, SDLoc(N), NVT, N->getOperand(0));
+ SDLoc dl(N);
+ Hi = DAG.getNode(ISD::FP_EXTEND, dl, NVT, N->getOperand(0));
Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
- APInt(NVT.getSizeInBits(), 0)), NVT);
+ APInt(NVT.getSizeInBits(), 0)), dl, NVT);
}
void DAGTypeLegalizer::ExpandFloatRes_FPOW(SDNode *N,
// The low part is zero.
Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
- APInt(NVT.getSizeInBits(), 0)), NVT);
+ APInt(NVT.getSizeInBits(), 0)), dl, NVT);
// Modified the chain - switch anything that used the old chain to use the
// new one.
Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
MVT::i32, Src);
Lo = DAG.getConstantFP(APFloat(DAG.EVTToAPFloatSemantics(NVT),
- APInt(NVT.getSizeInBits(), 0)), NVT);
+ APInt(NVT.getSizeInBits(), 0)), dl, NVT);
Hi = DAG.getNode(ISD::SINT_TO_FP, dl, NVT, Src);
} else {
RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
Lo = DAG.getNode(ISD::FADD, dl, VT, Hi,
DAG.getConstantFP(APFloat(APFloat::PPCDoubleDouble,
APInt(128, Parts)),
- MVT::ppcf128));
- Lo = DAG.getSelectCC(dl, Src, DAG.getConstant(0, SrcVT),
+ dl, MVT::ppcf128));
+ Lo = DAG.getSelectCC(dl, Src, DAG.getConstant(0, dl, SrcVT),
Lo, Hi, ISD::SETLT);
GetPairElements(Lo, Lo, Hi);
}
// If ExpandSetCCOperands returned a scalar, we need to compare the result
// against zero to select between true and false values.
if (!NewRHS.getNode()) {
- NewRHS = DAG.getConstant(0, NewLHS.getValueType());
+ NewRHS = DAG.getConstant(0, SDLoc(N), NewLHS.getValueType());
CCCode = ISD::SETNE;
}
SDValue Res = DAG.getNode(ISD::FP_ROUND_INREG, dl, MVT::ppcf128,
N->getOperand(0), DAG.getValueType(MVT::f64));
Res = DAG.getNode(ISD::FP_ROUND, dl, MVT::f64, Res,
- DAG.getIntPtrConstant(1));
+ DAG.getIntPtrConstant(1, dl));
return DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32, Res);
}
"Logic only correct for ppcf128!");
const uint64_t TwoE31[] = {0x41e0000000000000LL, 0};
APFloat APF = APFloat(APFloat::PPCDoubleDouble, APInt(128, TwoE31));
- SDValue Tmp = DAG.getConstantFP(APF, MVT::ppcf128);
+ SDValue Tmp = DAG.getConstantFP(APF, dl, MVT::ppcf128);
// X>=2^31 ? (int)(X-2^31)+0x80000000 : (int)X
// FIXME: generated code sucks.
return DAG.getSelectCC(dl, N->getOperand(0), Tmp,
MVT::ppcf128,
N->getOperand(0),
Tmp)),
- DAG.getConstant(0x80000000, MVT::i32)),
+ DAG.getConstant(0x80000000, dl,
+ MVT::i32)),
DAG.getNode(ISD::FP_TO_SINT, dl,
MVT::i32, N->getOperand(0)),
ISD::SETGE);
// If ExpandSetCCOperands returned a scalar, we need to compare the result
// against zero to select between true and false values.
if (!NewRHS.getNode()) {
- NewRHS = DAG.getConstant(0, NewLHS.getValueType());
+ NewRHS = DAG.getConstant(0, SDLoc(N), NewLHS.getValueType());
CCCode = ISD::SETNE;
}
return DAG.getTruncStore(Chain, SDLoc(N), Hi, Ptr,
ST->getMemoryVT(), ST->getMemOperand());
}
+
+//===----------------------------------------------------------------------===//
+// Float Operand Promotion
+//===----------------------------------------------------------------------===//
+//
+
+static ISD::NodeType GetPromotionOpcode(EVT OpVT, EVT RetVT) {
+ if (OpVT == MVT::f16) {
+ return ISD::FP16_TO_FP;
+ } else if (RetVT == MVT::f16) {
+ return ISD::FP_TO_FP16;
+ }
+
+ report_fatal_error("Attempt at an invalid promotion-related conversion");
+}
+
+bool DAGTypeLegalizer::PromoteFloatOperand(SDNode *N, unsigned OpNo) {
+ SDValue R = SDValue();
+
+ // Nodes that use a promotion-requiring floating point operand, but doesn't
+ // produce a promotion-requiring floating point result, need to be legalized
+ // to use the promoted float operand. Nodes that produce at least one
+ // promotion-requiring floating point result have their operands legalized as
+ // a part of PromoteFloatResult.
+ switch (N->getOpcode()) {
+ default:
+ llvm_unreachable("Do not know how to promote this operator's operand!");
+
+ case ISD::BITCAST: R = PromoteFloatOp_BITCAST(N, OpNo); break;
+ case ISD::FCOPYSIGN: R = PromoteFloatOp_FCOPYSIGN(N, OpNo); break;
+ case ISD::FP_TO_SINT:
+ case ISD::FP_TO_UINT: R = PromoteFloatOp_FP_TO_XINT(N, OpNo); break;
+ case ISD::FP_EXTEND: R = PromoteFloatOp_FP_EXTEND(N, OpNo); break;
+ case ISD::SELECT_CC: R = PromoteFloatOp_SELECT_CC(N, OpNo); break;
+ case ISD::SETCC: R = PromoteFloatOp_SETCC(N, OpNo); break;
+ case ISD::STORE: R = PromoteFloatOp_STORE(N, OpNo); break;
+ }
+
+ if (R.getNode())
+ ReplaceValueWith(SDValue(N, 0), R);
+ return false;
+}
+
+SDValue DAGTypeLegalizer::PromoteFloatOp_BITCAST(SDNode *N, unsigned OpNo) {
+ SDValue Op = N->getOperand(0);
+ EVT OpVT = Op->getValueType(0);
+
+ EVT IVT = EVT::getIntegerVT(*DAG.getContext(), OpVT.getSizeInBits());
+ assert (IVT == N->getValueType(0) && "Bitcast to type of different size");
+
+ SDValue Promoted = GetPromotedFloat(N->getOperand(0));
+ EVT PromotedVT = Promoted->getValueType(0);
+
+ // Convert the promoted float value to the desired IVT.
+ return DAG.getNode(GetPromotionOpcode(PromotedVT, OpVT), SDLoc(N), IVT,
+ Promoted);
+}
+
+// Promote Operand 1 of FCOPYSIGN. Operand 0 ought to be handled by
+// PromoteFloatRes_FCOPYSIGN.
+SDValue DAGTypeLegalizer::PromoteFloatOp_FCOPYSIGN(SDNode *N, unsigned OpNo) {
+ assert (OpNo == 1 && "Only Operand 1 must need promotion here");
+ SDValue Op1 = GetPromotedFloat(N->getOperand(1));
+
+ return DAG.getNode(N->getOpcode(), SDLoc(N), N->getValueType(0),
+ N->getOperand(0), Op1);
+}
+
+// Convert the promoted float value to the desired integer type
+SDValue DAGTypeLegalizer::PromoteFloatOp_FP_TO_XINT(SDNode *N, unsigned OpNo) {
+ SDValue Op = GetPromotedFloat(N->getOperand(0));
+ return DAG.getNode(N->getOpcode(), SDLoc(N), N->getValueType(0), Op);
+}
+
+SDValue DAGTypeLegalizer::PromoteFloatOp_FP_EXTEND(SDNode *N, unsigned OpNo) {
+ SDValue Op = GetPromotedFloat(N->getOperand(0));
+ EVT VT = N->getValueType(0);
+
+ // Desired VT is same as promoted type. Use promoted float directly.
+ if (VT == Op->getValueType(0))
+ return Op;
+
+ // Else, extend the promoted float value to the desired VT.
+ return DAG.getNode(ISD::FP_EXTEND, SDLoc(N), VT, Op);
+}
+
+// Promote the float operands used for comparison. The true- and false-
+// operands have the same type as the result and are promoted, if needed, by
+// PromoteFloatRes_SELECT_CC
+SDValue DAGTypeLegalizer::PromoteFloatOp_SELECT_CC(SDNode *N, unsigned OpNo) {
+ SDValue LHS = GetPromotedFloat(N->getOperand(0));
+ SDValue RHS = GetPromotedFloat(N->getOperand(1));
+
+ return DAG.getNode(ISD::SELECT_CC, SDLoc(N), N->getValueType(0),
+ LHS, RHS, N->getOperand(2), N->getOperand(3),
+ N->getOperand(4));
+}
+
+// Construct a SETCC that compares the promoted values and sets the conditional
+// code.
+SDValue DAGTypeLegalizer::PromoteFloatOp_SETCC(SDNode *N, unsigned OpNo) {
+ EVT VT = N->getValueType(0);
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
+ SDValue Op0 = GetPromotedFloat(N->getOperand(0));
+ SDValue Op1 = GetPromotedFloat(N->getOperand(1));
+ ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
+
+ return DAG.getSetCC(SDLoc(N), NVT, Op0, Op1, CCCode);
+
+}
+
+// Lower the promoted Float down to the integer value of same size and construct
+// a STORE of the integer value.
+SDValue DAGTypeLegalizer::PromoteFloatOp_STORE(SDNode *N, unsigned OpNo) {
+ StoreSDNode *ST = cast<StoreSDNode>(N);
+ SDValue Val = ST->getValue();
+ SDLoc DL(N);
+
+ SDValue Promoted = GetPromotedFloat(Val);
+ EVT VT = ST->getOperand(1)->getValueType(0);
+ EVT IVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits());
+
+ SDValue NewVal;
+ NewVal = DAG.getNode(GetPromotionOpcode(Promoted.getValueType(), VT), DL,
+ IVT, Promoted);
+
+ return DAG.getStore(ST->getChain(), DL, NewVal, ST->getBasePtr(),
+ ST->getMemOperand());
+}
+
+//===----------------------------------------------------------------------===//
+// Float Result Promotion
+//===----------------------------------------------------------------------===//
+
+void DAGTypeLegalizer::PromoteFloatResult(SDNode *N, unsigned ResNo) {
+ SDValue R = SDValue();
+
+ switch (N->getOpcode()) {
+ // These opcodes cannot appear if promotion of FP16 is done in the backend
+ // instead of Clang
+ case ISD::FP16_TO_FP:
+ case ISD::FP_TO_FP16:
+ default:
+ llvm_unreachable("Do not know how to promote this operator's result!");
+
+ case ISD::BITCAST: R = PromoteFloatRes_BITCAST(N); break;
+ case ISD::ConstantFP: R = PromoteFloatRes_ConstantFP(N); break;
+ case ISD::EXTRACT_VECTOR_ELT:
+ R = PromoteFloatRes_EXTRACT_VECTOR_ELT(N); break;
+ case ISD::FCOPYSIGN: R = PromoteFloatRes_FCOPYSIGN(N); break;
+
+ // Unary FP Operations
+ case ISD::FABS:
+ case ISD::FCEIL:
+ case ISD::FCOS:
+ case ISD::FEXP:
+ case ISD::FEXP2:
+ case ISD::FFLOOR:
+ case ISD::FLOG:
+ case ISD::FLOG2:
+ case ISD::FLOG10:
+ case ISD::FNEARBYINT:
+ case ISD::FNEG:
+ case ISD::FRINT:
+ case ISD::FROUND:
+ case ISD::FSIN:
+ case ISD::FSQRT:
+ case ISD::FTRUNC: R = PromoteFloatRes_UnaryOp(N); break;
+
+ // Binary FP Operations
+ case ISD::FADD:
+ case ISD::FDIV:
+ case ISD::FMAXNUM:
+ case ISD::FMINNUM:
+ case ISD::FMUL:
+ case ISD::FPOW:
+ case ISD::FREM:
+ case ISD::FSUB: R = PromoteFloatRes_BinOp(N); break;
+
+ case ISD::FMA: // FMA is same as FMAD
+ case ISD::FMAD: R = PromoteFloatRes_FMAD(N); break;
+
+ case ISD::FPOWI: R = PromoteFloatRes_FPOWI(N); break;
+
+ case ISD::FP_ROUND: R = PromoteFloatRes_FP_ROUND(N); break;
+ case ISD::LOAD: R = PromoteFloatRes_LOAD(N); break;
+ case ISD::SELECT: R = PromoteFloatRes_SELECT(N); break;
+ case ISD::SELECT_CC: R = PromoteFloatRes_SELECT_CC(N); break;
+
+ case ISD::SINT_TO_FP:
+ case ISD::UINT_TO_FP: R = PromoteFloatRes_XINT_TO_FP(N); break;
+ case ISD::UNDEF: R = PromoteFloatRes_UNDEF(N); break;
+
+ }
+
+ if (R.getNode())
+ SetPromotedFloat(SDValue(N, ResNo), R);
+}
+
+// Bitcast from i16 to f16: convert the i16 to a f32 value instead.
+// At this point, it is not possible to determine if the bitcast value is
+// eventually stored to memory or promoted to f32 or promoted to a floating
+// point at a higher precision. Some of these cases are handled by FP_EXTEND,
+// STORE promotion handlers.
+SDValue DAGTypeLegalizer::PromoteFloatRes_BITCAST(SDNode *N) {
+ EVT VT = N->getValueType(0);
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
+ return DAG.getNode(GetPromotionOpcode(VT, NVT), SDLoc(N), NVT,
+ N->getOperand(0));
+}
+
+SDValue DAGTypeLegalizer::PromoteFloatRes_ConstantFP(SDNode *N) {
+ ConstantFPSDNode *CFPNode = cast<ConstantFPSDNode>(N);
+ EVT VT = N->getValueType(0);
+ SDLoc DL(N);
+
+ // Get the (bit-cast) APInt of the APFloat and build an integer constant
+ EVT IVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits());
+ SDValue C = DAG.getConstant(CFPNode->getValueAPF().bitcastToAPInt(), DL,
+ IVT);
+
+ // Convert the Constant to the desired FP type
+ // FIXME We might be able to do the conversion during compilation and get rid
+ // of it from the object code
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
+ return DAG.getNode(GetPromotionOpcode(VT, NVT), DL, NVT, C);
+}
+
+// If the Index operand is a constant, try to redirect the extract operation to
+// the correct legalized vector. If not, bit-convert the input vector to
+// equivalent integer vector. Extract the element as an (bit-cast) integer
+// value and convert it to the promoted type.
+SDValue DAGTypeLegalizer::PromoteFloatRes_EXTRACT_VECTOR_ELT(SDNode *N) {
+ SDLoc DL(N);
+
+ // If the index is constant, try to extract the value from the legalized
+ // vector type.
+ if (isa<ConstantSDNode>(N->getOperand(1))) {
+ SDValue Vec = N->getOperand(0);
+ SDValue Idx = N->getOperand(1);
+ EVT VecVT = Vec->getValueType(0);
+ EVT EltVT = VecVT.getVectorElementType();
+
+ uint64_t IdxVal = cast<ConstantSDNode>(Idx)->getZExtValue();
+
+ switch (getTypeAction(VecVT)) {
+ default: break;
+ case TargetLowering::TypeScalarizeVector: {
+ SDValue Res = GetScalarizedVector(N->getOperand(0));
+ ReplaceValueWith(SDValue(N, 0), Res);
+ return SDValue();
+ }
+ case TargetLowering::TypeWidenVector: {
+ Vec = GetWidenedVector(Vec);
+ SDValue Res = DAG.getNode(N->getOpcode(), DL, EltVT, Vec, Idx);
+ ReplaceValueWith(SDValue(N, 0), Res);
+ return SDValue();
+ }
+ case TargetLowering::TypeSplitVector: {
+ SDValue Lo, Hi;
+ GetSplitVector(Vec, Lo, Hi);
+
+ uint64_t LoElts = Lo.getValueType().getVectorNumElements();
+ SDValue Res;
+ if (IdxVal < LoElts)
+ Res = DAG.getNode(N->getOpcode(), DL, EltVT, Lo, Idx);
+ else
+ Res = DAG.getNode(N->getOpcode(), DL, EltVT, Hi,
+ DAG.getConstant(IdxVal - LoElts, DL,
+ Idx.getValueType()));
+ ReplaceValueWith(SDValue(N, 0), Res);
+ return SDValue();
+ }
+
+ }
+ }
+
+ // Bit-convert the input vector to the equivalent integer vector
+ SDValue NewOp = BitConvertVectorToIntegerVector(N->getOperand(0));
+ EVT IVT = NewOp.getValueType().getVectorElementType();
+
+ // Extract the element as an (bit-cast) integer value
+ SDValue NewVal = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, IVT,
+ NewOp, N->getOperand(1));
+
+ // Convert the element to the desired FP type
+ EVT VT = N->getValueType(0);
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
+ return DAG.getNode(GetPromotionOpcode(VT, NVT), SDLoc(N), NVT, NewVal);
+}
+
+// FCOPYSIGN(X, Y) returns the value of X with the sign of Y. If the result
+// needs promotion, so does the argument X. Note that Y, if needed, will be
+// handled during operand promotion.
+SDValue DAGTypeLegalizer::PromoteFloatRes_FCOPYSIGN(SDNode *N) {
+ EVT VT = N->getValueType(0);
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
+ SDValue Op0 = GetPromotedFloat(N->getOperand(0));
+
+ SDValue Op1 = N->getOperand(1);
+
+ return DAG.getNode(N->getOpcode(), SDLoc(N), NVT, Op0, Op1);
+}
+
+// Unary operation where the result and the operand have PromoteFloat type
+// action. Construct a new SDNode with the promoted float value of the old
+// operand.
+SDValue DAGTypeLegalizer::PromoteFloatRes_UnaryOp(SDNode *N) {
+ EVT VT = N->getValueType(0);
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
+ SDValue Op = GetPromotedFloat(N->getOperand(0));
+
+ return DAG.getNode(N->getOpcode(), SDLoc(N), NVT, Op);
+}
+
+// Binary operations where the result and both operands have PromoteFloat type
+// action. Construct a new SDNode with the promoted float values of the old
+// operands.
+SDValue DAGTypeLegalizer::PromoteFloatRes_BinOp(SDNode *N) {
+ EVT VT = N->getValueType(0);
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
+ SDValue Op0 = GetPromotedFloat(N->getOperand(0));
+ SDValue Op1 = GetPromotedFloat(N->getOperand(1));
+
+ return DAG.getNode(N->getOpcode(), SDLoc(N), NVT, Op0, Op1);
+}
+
+SDValue DAGTypeLegalizer::PromoteFloatRes_FMAD(SDNode *N) {
+ EVT VT = N->getValueType(0);
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
+ SDValue Op0 = GetPromotedFloat(N->getOperand(0));
+ SDValue Op1 = GetPromotedFloat(N->getOperand(1));
+ SDValue Op2 = GetPromotedFloat(N->getOperand(2));
+
+ return DAG.getNode(N->getOpcode(), SDLoc(N), NVT, Op0, Op1, Op2);
+}
+
+// Promote the Float (first) operand and retain the Integer (second) operand
+SDValue DAGTypeLegalizer::PromoteFloatRes_FPOWI(SDNode *N) {
+ EVT VT = N->getValueType(0);
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
+ SDValue Op0 = GetPromotedFloat(N->getOperand(0));
+ SDValue Op1 = N->getOperand(1);
+
+ return DAG.getNode(N->getOpcode(), SDLoc(N), NVT, Op0, Op1);
+}
+
+// Explicit operation to reduce precision. Reduce the value to half precision
+// and promote it back to the legal type.
+SDValue DAGTypeLegalizer::PromoteFloatRes_FP_ROUND(SDNode *N) {
+ SDLoc DL(N);
+
+ SDValue Op = N->getOperand(0);
+ EVT VT = N->getValueType(0);
+ EVT OpVT = Op->getValueType(0);
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
+ EVT IVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits());
+
+ // Round promoted float to desired precision
+ SDValue Round = DAG.getNode(GetPromotionOpcode(OpVT, VT), DL, IVT, Op);
+ // Promote it back to the legal output type
+ return DAG.getNode(GetPromotionOpcode(VT, NVT), DL, NVT, Round);
+}
+
+SDValue DAGTypeLegalizer::PromoteFloatRes_LOAD(SDNode *N) {
+ LoadSDNode *L = cast<LoadSDNode>(N);
+ EVT VT = N->getValueType(0);
+
+ // Load the value as an integer value with the same number of bits
+ EVT IVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits());
+ SDValue newL = DAG.getLoad(L->getAddressingMode(), L->getExtensionType(),
+ IVT, SDLoc(N), L->getChain(), L->getBasePtr(),
+ L->getOffset(), L->getPointerInfo(), IVT, L->isVolatile(),
+ L->isNonTemporal(), false, L->getAlignment(),
+ L->getAAInfo());
+ // Legalize the chain result by replacing uses of the old value chain with the
+ // new one
+ ReplaceValueWith(SDValue(N, 1), newL.getValue(1));
+
+ // Convert the integer value to the desired FP type
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
+ return DAG.getNode(GetPromotionOpcode(VT, NVT), SDLoc(N), NVT, newL);
+}
+
+// Construct a new SELECT node with the promoted true- and false- values.
+SDValue DAGTypeLegalizer::PromoteFloatRes_SELECT(SDNode *N) {
+ SDValue TrueVal = GetPromotedFloat(N->getOperand(1));
+ SDValue FalseVal = GetPromotedFloat(N->getOperand(2));
+
+ return DAG.getNode(ISD::SELECT, SDLoc(N), TrueVal->getValueType(0),
+ N->getOperand(0), TrueVal, FalseVal);
+}
+
+// Construct a new SELECT_CC node with the promoted true- and false- values.
+// The operands used for comparison are promoted by PromoteFloatOp_SELECT_CC.
+SDValue DAGTypeLegalizer::PromoteFloatRes_SELECT_CC(SDNode *N) {
+ SDValue TrueVal = GetPromotedFloat(N->getOperand(2));
+ SDValue FalseVal = GetPromotedFloat(N->getOperand(3));
+
+ return DAG.getNode(ISD::SELECT_CC, SDLoc(N), N->getValueType(0),
+ N->getOperand(0), N->getOperand(1), TrueVal, FalseVal,
+ N->getOperand(4));
+}
+
+// Construct a SDNode that transforms the SINT or UINT operand to the promoted
+// float type.
+SDValue DAGTypeLegalizer::PromoteFloatRes_XINT_TO_FP(SDNode *N) {
+ EVT VT = N->getValueType(0);
+ EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
+ return DAG.getNode(N->getOpcode(), SDLoc(N), NVT, N->getOperand(0));
+}
+
+SDValue DAGTypeLegalizer::PromoteFloatRes_UNDEF(SDNode *N) {
+ return DAG.getUNDEF(TLI.getTypeToTransformTo(*DAG.getContext(),
+ N->getValueType(0)));
+}
+
projects / oota-llvm.git / blobdiff