//
//===----------------------------------------------------------------------===//
//
-// This file implements float type expansion and conversion of float types to
-// integer types on behalf of LegalizeTypes.
-// Converting to integer is the act of turning a computation in an illegal
-// floating point type into a computation in an integer type of the same size.
-// For example, turning f32 arithmetic into operations using i32. Also known as
-// "soft float". The result is equivalent to bitcasting the float value to the
-// integer type.
+// This file implements float type expansion and softening for LegalizeTypes.
+// Softening is the act of turning a computation in an illegal floating point
+// type into a computation in an integer type of the same size; also known as
+// "soft float". For example, turning f32 arithmetic into operations using i32.
+// The resulting integer value is the same as what you would get by performing
+// the floating point operation and bitcasting the result to the integer type.
// Expansion is the act of changing a computation in an illegal type to be a
-// computation in multiple registers of a smaller type. For example,
+// computation in two identical registers of a smaller type. For example,
// implementing ppcf128 arithmetic in two f64 registers.
//
//===----------------------------------------------------------------------===//
#include "LegalizeTypes.h"
-#include "llvm/CodeGen/PseudoSourceValue.h"
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
using namespace llvm;
/// GetFPLibCall - Return the right libcall for the given floating point type.
// Result Float to Integer Conversion.
//===----------------------------------------------------------------------===//
-void DAGTypeLegalizer::PromoteFloatResult(SDNode *N, unsigned ResNo) {
- DEBUG(cerr << "Promote float result " << ResNo << ": "; N->dump(&DAG);
+void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) {
+ DEBUG(cerr << "Soften float result " << ResNo << ": "; N->dump(&DAG);
cerr << "\n");
- SDOperand R = SDOperand();
-
- // FIXME: Custom lowering for float-to-int?
-#if 0
- // See if the target wants to custom convert this node to an integer.
- if (TLI.getOperationAction(N->getOpcode(), N->getValueType(0)) ==
- TargetLowering::Custom) {
- // If the target wants to, allow it to lower this itself.
- if (SDNode *P = TLI.FloatToIntOperationResult(N, DAG)) {
- // Everything that once used N now uses P. We are guaranteed that the
- // result value types of N and the result value types of P match.
- ReplaceNodeWith(N, P);
- return;
- }
- }
-#endif
+ SDValue R = SDValue();
switch (N->getOpcode()) {
default:
#ifndef NDEBUG
- cerr << "PromoteFloatResult #" << ResNo << ": ";
+ cerr << "SoftenFloatResult #" << ResNo << ": ";
N->dump(&DAG); cerr << "\n";
#endif
- assert(0 && "Do not know how to convert the result of this operator!");
+ assert(0 && "Do not know how to soften the result of this operator!");
abort();
- case ISD::BIT_CONVERT: R = PromoteFloatRes_BIT_CONVERT(N); break;
- case ISD::BUILD_PAIR: R = PromoteFloatRes_BUILD_PAIR(N); break;
+ case ISD::BIT_CONVERT: R = SoftenFloatRes_BIT_CONVERT(N); break;
+ case ISD::BUILD_PAIR: R = SoftenFloatRes_BUILD_PAIR(N); break;
case ISD::ConstantFP:
- R = PromoteFloatRes_ConstantFP(cast<ConstantFPSDNode>(N));
+ R = SoftenFloatRes_ConstantFP(cast<ConstantFPSDNode>(N));
break;
- case ISD::FCOPYSIGN: R = PromoteFloatRes_FCOPYSIGN(N); break;
- case ISD::LOAD: R = PromoteFloatRes_LOAD(N); break;
- case ISD::SINT_TO_FP:
- case ISD::UINT_TO_FP: R = PromoteFloatRes_XINT_TO_FP(N); break;
-
- case ISD::FADD: R = PromoteFloatRes_FADD(N); break;
- case ISD::FMUL: R = PromoteFloatRes_FMUL(N); break;
- case ISD::FSUB: R = PromoteFloatRes_FSUB(N); break;
+ case ISD::FABS: R = SoftenFloatRes_FABS(N); break;
+ case ISD::FADD: R = SoftenFloatRes_FADD(N); break;
+ case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N); break;
+ case ISD::FDIV: R = SoftenFloatRes_FDIV(N); break;
+ case ISD::FMUL: R = SoftenFloatRes_FMUL(N); break;
+ case ISD::FP_EXTEND: R = SoftenFloatRes_FP_EXTEND(N); break;
+ case ISD::FP_ROUND: R = SoftenFloatRes_FP_ROUND(N); break;
+ case ISD::FPOW: R = SoftenFloatRes_FPOW(N); break;
+ case ISD::FPOWI: R = SoftenFloatRes_FPOWI(N); break;
+ case ISD::FSUB: R = SoftenFloatRes_FSUB(N); break;
+ case ISD::LOAD: R = SoftenFloatRes_LOAD(N); break;
+ case ISD::SELECT: R = SoftenFloatRes_SELECT(N); break;
+ case ISD::SELECT_CC: R = SoftenFloatRes_SELECT_CC(N); break;
+ case ISD::SINT_TO_FP: R = SoftenFloatRes_SINT_TO_FP(N); break;
+ case ISD::UINT_TO_FP: R = SoftenFloatRes_UINT_TO_FP(N); break;
}
// If R is null, the sub-method took care of registering the result.
- if (R.Val)
- SetPromotedFloat(SDOperand(N, ResNo), R);
+ if (R.getNode())
+ SetSoftenedFloat(SDValue(N, ResNo), R);
}
-SDOperand DAGTypeLegalizer::PromoteFloatRes_BIT_CONVERT(SDNode *N) {
+SDValue DAGTypeLegalizer::SoftenFloatRes_BIT_CONVERT(SDNode *N) {
return BitConvertToInteger(N->getOperand(0));
}
-SDOperand DAGTypeLegalizer::PromoteFloatRes_BUILD_PAIR(SDNode *N) {
+SDValue DAGTypeLegalizer::SoftenFloatRes_BUILD_PAIR(SDNode *N) {
// Convert the inputs to integers, and build a new pair out of them.
return DAG.getNode(ISD::BUILD_PAIR,
TLI.getTypeToTransformTo(N->getValueType(0)),
BitConvertToInteger(N->getOperand(1)));
}
-SDOperand DAGTypeLegalizer::PromoteFloatRes_ConstantFP(ConstantFPSDNode *N) {
- return DAG.getConstant(N->getValueAPF().convertToAPInt(),
+SDValue DAGTypeLegalizer::SoftenFloatRes_ConstantFP(ConstantFPSDNode *N) {
+ return DAG.getConstant(N->getValueAPF().bitcastToAPInt(),
TLI.getTypeToTransformTo(N->getValueType(0)));
}
-SDOperand DAGTypeLegalizer::PromoteFloatRes_FADD(SDNode *N) {
+SDValue DAGTypeLegalizer::SoftenFloatRes_FABS(SDNode *N) {
+ MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+ unsigned Size = NVT.getSizeInBits();
+
+ // Mask = ~(1 << (Size-1))
+ SDValue Mask = DAG.getConstant(APInt::getAllOnesValue(Size).clear(Size-1),
+ NVT);
+ SDValue Op = GetSoftenedFloat(N->getOperand(0));
+ return DAG.getNode(ISD::AND, NVT, Op, Mask);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
- SDOperand Ops[2] = { GetPromotedFloat(N->getOperand(0)),
- GetPromotedFloat(N->getOperand(1)) };
+ SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
+ GetSoftenedFloat(N->getOperand(1)) };
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::ADD_F32,
RTLIB::ADD_F64,
RTLIB::ADD_F80,
RTLIB::ADD_PPCF128),
- NVT, Ops, 2, false/*sign irrelevant*/);
+ NVT, Ops, 2, false);
}
-SDOperand DAGTypeLegalizer::PromoteFloatRes_FCOPYSIGN(SDNode *N) {
- SDOperand LHS = GetPromotedFloat(N->getOperand(0));
- SDOperand RHS = BitConvertToInteger(N->getOperand(1));
+SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) {
+ SDValue LHS = GetSoftenedFloat(N->getOperand(0));
+ SDValue RHS = BitConvertToInteger(N->getOperand(1));
MVT LVT = LHS.getValueType();
MVT RVT = RHS.getValueType();
unsigned RSize = RVT.getSizeInBits();
// First get the sign bit of second operand.
- SDOperand SignBit = DAG.getNode(ISD::SHL, RVT, DAG.getConstant(1, RVT),
+ SDValue SignBit = DAG.getNode(ISD::SHL, RVT, DAG.getConstant(1, RVT),
DAG.getConstant(RSize - 1,
TLI.getShiftAmountTy()));
SignBit = DAG.getNode(ISD::AND, RVT, RHS, SignBit);
}
// Clear the sign bit of the first operand.
- SDOperand Mask = DAG.getNode(ISD::SHL, LVT, DAG.getConstant(1, LVT),
+ SDValue Mask = DAG.getNode(ISD::SHL, LVT, DAG.getConstant(1, LVT),
DAG.getConstant(LSize - 1,
TLI.getShiftAmountTy()));
Mask = DAG.getNode(ISD::SUB, LVT, Mask, DAG.getConstant(1, LVT));
return DAG.getNode(ISD::OR, LVT, LHS, SignBit);
}
-SDOperand DAGTypeLegalizer::PromoteFloatRes_FMUL(SDNode *N) {
+SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
- SDOperand Ops[2] = { GetPromotedFloat(N->getOperand(0)),
- GetPromotedFloat(N->getOperand(1)) };
+ SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
+ GetSoftenedFloat(N->getOperand(1)) };
+ return MakeLibCall(GetFPLibCall(N->getValueType(0),
+ RTLIB::DIV_F32,
+ RTLIB::DIV_F64,
+ RTLIB::DIV_F80,
+ RTLIB::DIV_PPCF128),
+ NVT, Ops, 2, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) {
+ MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+ SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
+ GetSoftenedFloat(N->getOperand(1)) };
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::MUL_F32,
RTLIB::MUL_F64,
RTLIB::MUL_F80,
RTLIB::MUL_PPCF128),
- NVT, Ops, 2, false/*sign irrelevant*/);
+ NVT, Ops, 2, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
+ MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+ SDValue Op = N->getOperand(0);
+ RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0));
+ assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!");
+ return MakeLibCall(LC, NVT, &Op, 1, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) {
+ MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+ SDValue Op = N->getOperand(0);
+ RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0));
+ assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!");
+ return MakeLibCall(LC, NVT, &Op, 1, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FPOW(SDNode *N) {
+ MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+ SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
+ GetSoftenedFloat(N->getOperand(1)) };
+ return MakeLibCall(GetFPLibCall(N->getValueType(0),
+ RTLIB::POW_F32,
+ RTLIB::POW_F64,
+ RTLIB::POW_F80,
+ RTLIB::POW_PPCF128),
+ NVT, Ops, 2, false);
}
-SDOperand DAGTypeLegalizer::PromoteFloatRes_FSUB(SDNode *N) {
+SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
- SDOperand Ops[2] = { GetPromotedFloat(N->getOperand(0)),
- GetPromotedFloat(N->getOperand(1)) };
+ SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), N->getOperand(1) };
+ return MakeLibCall(GetFPLibCall(N->getValueType(0),
+ RTLIB::POWI_F32,
+ RTLIB::POWI_F64,
+ RTLIB::POWI_F80,
+ RTLIB::POWI_PPCF128),
+ NVT, Ops, 2, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
+ MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+ SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
+ GetSoftenedFloat(N->getOperand(1)) };
return MakeLibCall(GetFPLibCall(N->getValueType(0),
RTLIB::SUB_F32,
RTLIB::SUB_F64,
RTLIB::SUB_F80,
RTLIB::SUB_PPCF128),
- NVT, Ops, 2, false/*sign irrelevant*/);
+ NVT, Ops, 2, false);
}
-SDOperand DAGTypeLegalizer::PromoteFloatRes_LOAD(SDNode *N) {
+SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) {
LoadSDNode *L = cast<LoadSDNode>(N);
MVT VT = N->getValueType(0);
MVT NVT = TLI.getTypeToTransformTo(VT);
- if (L->getExtensionType() == ISD::NON_EXTLOAD)
- return DAG.getLoad(L->getAddressingMode(), L->getExtensionType(),
- NVT, L->getChain(), L->getBasePtr(), L->getOffset(),
- L->getSrcValue(), L->getSrcValueOffset(), NVT,
- L->isVolatile(), L->getAlignment());
+ SDValue NewL;
+ if (L->getExtensionType() == ISD::NON_EXTLOAD) {
+ NewL = DAG.getLoad(L->getAddressingMode(), L->getExtensionType(),
+ NVT, L->getChain(), L->getBasePtr(), L->getOffset(),
+ L->getSrcValue(), L->getSrcValueOffset(), NVT,
+ L->isVolatile(), L->getAlignment());
+ // Legalized the chain result - switch anything that used the old chain to
+ // use the new one.
+ ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
+ return NewL;
+ }
// Do a non-extending load followed by FP_EXTEND.
- SDOperand NL = DAG.getLoad(L->getAddressingMode(), ISD::NON_EXTLOAD,
- L->getMemoryVT(), L->getChain(),
- L->getBasePtr(), L->getOffset(),
- L->getSrcValue(), L->getSrcValueOffset(),
- L->getMemoryVT(),
- L->isVolatile(), L->getAlignment());
- return BitConvertToInteger(DAG.getNode(ISD::FP_EXTEND, VT, NL));
-}
-
-SDOperand DAGTypeLegalizer::PromoteFloatRes_XINT_TO_FP(SDNode *N) {
- bool isSigned = N->getOpcode() == ISD::SINT_TO_FP;
- MVT DestVT = N->getValueType(0);
- SDOperand Op = N->getOperand(0);
-
- if (Op.getValueType() == MVT::i32) {
- // simple 32-bit [signed|unsigned] integer to float/double expansion
-
- // Get the stack frame index of a 8 byte buffer.
- SDOperand StackSlot = DAG.CreateStackTemporary(MVT::f64);
-
- // word offset constant for Hi/Lo address computation
- SDOperand Offset =
- DAG.getConstant(MVT(MVT::i32).getSizeInBits() / 8,
- TLI.getPointerTy());
- // set up Hi and Lo (into buffer) address based on endian
- SDOperand Hi = StackSlot;
- SDOperand Lo = DAG.getNode(ISD::ADD, TLI.getPointerTy(), StackSlot, Offset);
- if (TLI.isLittleEndian())
- std::swap(Hi, Lo);
-
- // if signed map to unsigned space
- SDOperand OpMapped;
- if (isSigned) {
- // constant used to invert sign bit (signed to unsigned mapping)
- SDOperand SignBit = DAG.getConstant(0x80000000u, MVT::i32);
- OpMapped = DAG.getNode(ISD::XOR, MVT::i32, Op, SignBit);
- } else {
- OpMapped = Op;
- }
- // store the lo of the constructed double - based on integer input
- SDOperand Store1 = DAG.getStore(DAG.getEntryNode(),
- OpMapped, Lo, NULL, 0);
- // initial hi portion of constructed double
- SDOperand InitialHi = DAG.getConstant(0x43300000u, MVT::i32);
- // store the hi of the constructed double - biased exponent
- SDOperand Store2=DAG.getStore(Store1, InitialHi, Hi, NULL, 0);
- // load the constructed double
- SDOperand Load = DAG.getLoad(MVT::f64, Store2, StackSlot, NULL, 0);
- // FP constant to bias correct the final result
- SDOperand Bias = DAG.getConstantFP(isSigned ?
- BitsToDouble(0x4330000080000000ULL)
- : BitsToDouble(0x4330000000000000ULL),
- MVT::f64);
- // subtract the bias
- SDOperand Sub = DAG.getNode(ISD::FSUB, MVT::f64, Load, Bias);
- // final result
- SDOperand Result;
- // handle final rounding
- if (DestVT == MVT::f64) {
- // do nothing
- Result = Sub;
- } else if (DestVT.bitsLT(MVT::f64)) {
- Result = DAG.getNode(ISD::FP_ROUND, DestVT, Sub,
- DAG.getIntPtrConstant(0));
- } else if (DestVT.bitsGT(MVT::f64)) {
- Result = DAG.getNode(ISD::FP_EXTEND, DestVT, Sub);
- }
- return BitConvertToInteger(Result);
- }
- assert(!isSigned && "Legalize cannot Expand SINT_TO_FP for i64 yet");
- SDOperand Tmp1 = DAG.getNode(ISD::SINT_TO_FP, DestVT, Op);
-
- SDOperand SignSet = DAG.getSetCC(TLI.getSetCCResultType(Op), Op,
- DAG.getConstant(0, Op.getValueType()),
- ISD::SETLT);
- SDOperand Zero = DAG.getIntPtrConstant(0), Four = DAG.getIntPtrConstant(4);
- SDOperand CstOffset = DAG.getNode(ISD::SELECT, Zero.getValueType(),
- SignSet, Four, Zero);
-
- // If the sign bit of the integer is set, the large number will be treated
- // as a negative number. To counteract this, the dynamic code adds an
- // offset depending on the data type.
- uint64_t FF;
- switch (Op.getValueType().getSimpleVT()) {
- default: assert(0 && "Unsupported integer type!");
- case MVT::i8 : FF = 0x43800000ULL; break; // 2^8 (as a float)
- case MVT::i16: FF = 0x47800000ULL; break; // 2^16 (as a float)
- case MVT::i32: FF = 0x4F800000ULL; break; // 2^32 (as a float)
- case MVT::i64: FF = 0x5F800000ULL; break; // 2^64 (as a float)
- }
- if (TLI.isLittleEndian()) FF <<= 32;
- static Constant *FudgeFactor = ConstantInt::get(Type::Int64Ty, FF);
-
- SDOperand CPIdx = DAG.getConstantPool(FudgeFactor, TLI.getPointerTy());
- CPIdx = DAG.getNode(ISD::ADD, TLI.getPointerTy(), CPIdx, CstOffset);
- SDOperand FudgeInReg;
- if (DestVT == MVT::f32)
- FudgeInReg = DAG.getLoad(MVT::f32, DAG.getEntryNode(), CPIdx,
- PseudoSourceValue::getConstantPool(), 0);
- else {
- FudgeInReg = DAG.getExtLoad(ISD::EXTLOAD, DestVT,
- DAG.getEntryNode(), CPIdx,
- PseudoSourceValue::getConstantPool(), 0,
- MVT::f32);
- }
+ NewL = DAG.getLoad(L->getAddressingMode(), ISD::NON_EXTLOAD,
+ L->getMemoryVT(), L->getChain(),
+ L->getBasePtr(), L->getOffset(),
+ L->getSrcValue(), L->getSrcValueOffset(),
+ L->getMemoryVT(),
+ L->isVolatile(), L->getAlignment());
+ // Legalized the chain result - switch anything that used the old chain to
+ // use the new one.
+ ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
+ return BitConvertToInteger(DAG.getNode(ISD::FP_EXTEND, VT, NewL));
+}
- return BitConvertToInteger(DAG.getNode(ISD::FADD, DestVT, Tmp1, FudgeInReg));
+SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT(SDNode *N) {
+ SDValue LHS = GetSoftenedFloat(N->getOperand(1));
+ SDValue RHS = GetSoftenedFloat(N->getOperand(2));
+ return DAG.getNode(ISD::SELECT, LHS.getValueType(), N->getOperand(0),LHS,RHS);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT_CC(SDNode *N) {
+ SDValue LHS = GetSoftenedFloat(N->getOperand(2));
+ SDValue RHS = GetSoftenedFloat(N->getOperand(3));
+ return DAG.getNode(ISD::SELECT_CC, LHS.getValueType(), N->getOperand(0),
+ N->getOperand(1), LHS, RHS, N->getOperand(4));
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_SINT_TO_FP(SDNode *N) {
+ SDValue Op = N->getOperand(0);
+ MVT RVT = N->getValueType(0);
+ RTLIB::Libcall LC = RTLIB::getSINTTOFP(Op.getValueType(), RVT);
+ assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SINT_TO_FP!");
+ return MakeLibCall(LC, TLI.getTypeToTransformTo(RVT), &Op, 1, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatRes_UINT_TO_FP(SDNode *N) {
+ SDValue Op = N->getOperand(0);
+ MVT RVT = N->getValueType(0);
+ RTLIB::Libcall LC = RTLIB::getUINTTOFP(Op.getValueType(), RVT);
+ assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UINT_TO_FP!");
+ return MakeLibCall(LC, TLI.getTypeToTransformTo(RVT), &Op, 1, false);
}
// Operand Float to Integer Conversion..
//===----------------------------------------------------------------------===//
-bool DAGTypeLegalizer::PromoteFloatOperand(SDNode *N, unsigned OpNo) {
- DEBUG(cerr << "Promote float operand " << OpNo << ": "; N->dump(&DAG);
+bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) {
+ DEBUG(cerr << "Soften float operand " << OpNo << ": "; N->dump(&DAG);
cerr << "\n");
- SDOperand Res(0, 0);
+ SDValue Res = SDValue();
- // FIXME: Custom lowering for float-to-int?
-#if 0
- if (TLI.getOperationAction(N->getOpcode(), N->getOperand(OpNo).getValueType())
- == TargetLowering::Custom)
- Res = TLI.LowerOperation(SDOperand(N, 0), DAG);
-#endif
-
- if (Res.Val == 0) {
- switch (N->getOpcode()) {
- default:
+ switch (N->getOpcode()) {
+ default:
#ifndef NDEBUG
- cerr << "PromoteFloatOperand Op #" << OpNo << ": ";
- N->dump(&DAG); cerr << "\n";
+ cerr << "SoftenFloatOperand Op #" << OpNo << ": ";
+ N->dump(&DAG); cerr << "\n";
#endif
- assert(0 && "Do not know how to convert this operator's operand!");
- abort();
+ assert(0 && "Do not know how to soften this operator's operand!");
+ abort();
- case ISD::BIT_CONVERT: Res = PromoteFloatOp_BIT_CONVERT(N); break;
- }
+ case ISD::BIT_CONVERT: Res = SoftenFloatOp_BIT_CONVERT(N); break;
+ case ISD::BR_CC: Res = SoftenFloatOp_BR_CC(N); break;
+ case ISD::FP_ROUND: Res = SoftenFloatOp_FP_ROUND(N); break;
+ case ISD::FP_TO_SINT: Res = SoftenFloatOp_FP_TO_SINT(N); break;
+ case ISD::FP_TO_UINT: Res = SoftenFloatOp_FP_TO_UINT(N); break;
+ case ISD::SELECT_CC: Res = SoftenFloatOp_SELECT_CC(N); break;
+ case ISD::SETCC: Res = SoftenFloatOp_SETCC(N); break;
+ case ISD::STORE: Res = SoftenFloatOp_STORE(N, OpNo); break;
}
// If the result is null, the sub-method took care of registering results etc.
- if (!Res.Val) return false;
+ if (!Res.getNode()) return false;
// If the result is N, the sub-method updated N in place. Check to see if any
// operands are new, and if so, mark them.
- if (Res.Val == N) {
+ if (Res.getNode() == N) {
// Mark N as new and remark N and its operands. This allows us to correctly
// revisit N if it needs another step of promotion and allows us to visit
// any new operands to N.
assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
"Invalid operand expansion");
- ReplaceValueWith(SDOperand(N, 0), Res);
+ ReplaceValueWith(SDValue(N, 0), Res);
return false;
}
-SDOperand DAGTypeLegalizer::PromoteFloatOp_BIT_CONVERT(SDNode *N) {
+/// SoftenSetCCOperands - Soften the operands of a comparison. This code is
+/// shared among BR_CC, SELECT_CC, and SETCC handlers.
+void DAGTypeLegalizer::SoftenSetCCOperands(SDValue &NewLHS, SDValue &NewRHS,
+ ISD::CondCode &CCCode) {
+ SDValue LHSInt = GetSoftenedFloat(NewLHS);
+ SDValue RHSInt = GetSoftenedFloat(NewRHS);
+ MVT VT = NewLHS.getValueType();
+
+ assert((VT == MVT::f32 || VT == MVT::f64) && "Unsupported setcc type!");
+
+ // Expand into one or more soft-fp libcall(s).
+ RTLIB::Libcall LC1 = RTLIB::UNKNOWN_LIBCALL, LC2 = RTLIB::UNKNOWN_LIBCALL;
+ switch (CCCode) {
+ case ISD::SETEQ:
+ case ISD::SETOEQ:
+ LC1 = (VT == MVT::f32) ? RTLIB::OEQ_F32 : RTLIB::OEQ_F64;
+ break;
+ case ISD::SETNE:
+ case ISD::SETUNE:
+ LC1 = (VT == MVT::f32) ? RTLIB::UNE_F32 : RTLIB::UNE_F64;
+ break;
+ case ISD::SETGE:
+ case ISD::SETOGE:
+ LC1 = (VT == MVT::f32) ? RTLIB::OGE_F32 : RTLIB::OGE_F64;
+ break;
+ case ISD::SETLT:
+ case ISD::SETOLT:
+ LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64;
+ break;
+ case ISD::SETLE:
+ case ISD::SETOLE:
+ LC1 = (VT == MVT::f32) ? RTLIB::OLE_F32 : RTLIB::OLE_F64;
+ break;
+ case ISD::SETGT:
+ case ISD::SETOGT:
+ LC1 = (VT == MVT::f32) ? RTLIB::OGT_F32 : RTLIB::OGT_F64;
+ break;
+ case ISD::SETUO:
+ LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64;
+ break;
+ case ISD::SETO:
+ LC1 = (VT == MVT::f32) ? RTLIB::O_F32 : RTLIB::O_F64;
+ break;
+ default:
+ LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64;
+ switch (CCCode) {
+ case ISD::SETONE:
+ // SETONE = SETOLT | SETOGT
+ LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64;
+ // Fallthrough
+ case ISD::SETUGT:
+ LC2 = (VT == MVT::f32) ? RTLIB::OGT_F32 : RTLIB::OGT_F64;
+ break;
+ case ISD::SETUGE:
+ LC2 = (VT == MVT::f32) ? RTLIB::OGE_F32 : RTLIB::OGE_F64;
+ break;
+ case ISD::SETULT:
+ LC2 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64;
+ break;
+ case ISD::SETULE:
+ LC2 = (VT == MVT::f32) ? RTLIB::OLE_F32 : RTLIB::OLE_F64;
+ break;
+ case ISD::SETUEQ:
+ LC2 = (VT == MVT::f32) ? RTLIB::OEQ_F32 : RTLIB::OEQ_F64;
+ break;
+ default: assert(false && "Do not know how to soften this setcc!");
+ }
+ }
+
+ MVT RetVT = MVT::i32; // FIXME: is this the correct return type?
+ SDValue Ops[2] = { LHSInt, RHSInt };
+ NewLHS = MakeLibCall(LC1, RetVT, Ops, 2, false/*sign irrelevant*/);
+ NewRHS = DAG.getConstant(0, RetVT);
+ CCCode = TLI.getCmpLibcallCC(LC1);
+ if (LC2 != RTLIB::UNKNOWN_LIBCALL) {
+ SDValue Tmp = DAG.getNode(ISD::SETCC, TLI.getSetCCResultType(NewLHS),
+ NewLHS, NewRHS, DAG.getCondCode(CCCode));
+ NewLHS = MakeLibCall(LC2, RetVT, Ops, 2, false/*sign irrelevant*/);
+ NewLHS = DAG.getNode(ISD::SETCC, TLI.getSetCCResultType(NewLHS), NewLHS,
+ NewRHS, DAG.getCondCode(TLI.getCmpLibcallCC(LC2)));
+ NewLHS = DAG.getNode(ISD::OR, Tmp.getValueType(), Tmp, NewLHS);
+ NewRHS = SDValue();
+ }
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatOp_BIT_CONVERT(SDNode *N) {
return DAG.getNode(ISD::BIT_CONVERT, N->getValueType(0),
- GetPromotedFloat(N->getOperand(0)));
+ GetSoftenedFloat(N->getOperand(0)));
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatOp_FP_ROUND(SDNode *N) {
+ MVT SVT = N->getOperand(0).getValueType();
+ MVT RVT = N->getValueType(0);
+
+ RTLIB::Libcall LC = RTLIB::getFPROUND(SVT, RVT);
+ assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND libcall");
+
+ SDValue Op = GetSoftenedFloat(N->getOperand(0));
+ return MakeLibCall(LC, RVT, &Op, 1, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatOp_BR_CC(SDNode *N) {
+ SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3);
+ ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get();
+ SoftenSetCCOperands(NewLHS, NewRHS, CCCode);
+
+ // If SoftenSetCCOperands returned a scalar, we need to compare the result
+ // against zero to select between true and false values.
+ if (NewRHS.getNode() == 0) {
+ NewRHS = DAG.getConstant(0, NewLHS.getValueType());
+ CCCode = ISD::SETNE;
+ }
+
+ // Update N to have the operands specified.
+ return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0),
+ DAG.getCondCode(CCCode), NewLHS, NewRHS,
+ N->getOperand(4));
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_SINT(SDNode *N) {
+ MVT RVT = N->getValueType(0);
+ RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT);
+ assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!");
+ SDValue Op = GetSoftenedFloat(N->getOperand(0));
+ return MakeLibCall(LC, RVT, &Op, 1, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_UINT(SDNode *N) {
+ MVT RVT = N->getValueType(0);
+ RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT);
+ assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!");
+ SDValue Op = GetSoftenedFloat(N->getOperand(0));
+ return MakeLibCall(LC, RVT, &Op, 1, false);
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatOp_SELECT_CC(SDNode *N) {
+ SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
+ ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get();
+ SoftenSetCCOperands(NewLHS, NewRHS, CCCode);
+
+ // If SoftenSetCCOperands returned a scalar, we need to compare the result
+ // against zero to select between true and false values.
+ if (NewRHS.getNode() == 0) {
+ NewRHS = DAG.getConstant(0, NewLHS.getValueType());
+ CCCode = ISD::SETNE;
+ }
+
+ // Update N to have the operands specified.
+ return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS,
+ N->getOperand(2), N->getOperand(3),
+ DAG.getCondCode(CCCode));
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatOp_SETCC(SDNode *N) {
+ SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
+ ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
+ SoftenSetCCOperands(NewLHS, NewRHS, CCCode);
+
+ // If SoftenSetCCOperands returned a scalar, use it.
+ if (NewRHS.getNode() == 0) {
+ assert(NewLHS.getValueType() == N->getValueType(0) &&
+ "Unexpected setcc expansion!");
+ return NewLHS;
+ }
+
+ // Otherwise, update N to have the operands specified.
+ return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS,
+ DAG.getCondCode(CCCode));
+}
+
+SDValue DAGTypeLegalizer::SoftenFloatOp_STORE(SDNode *N, unsigned OpNo) {
+ assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
+ assert(OpNo == 1 && "Can only soften the stored value!");
+ StoreSDNode *ST = cast<StoreSDNode>(N);
+ SDValue Val = ST->getValue();
+
+ if (ST->isTruncatingStore())
+ // Do an FP_ROUND followed by a non-truncating store.
+ Val = BitConvertToInteger(DAG.getNode(ISD::FP_ROUND, ST->getMemoryVT(),
+ Val, DAG.getIntPtrConstant(0)));
+ else
+ Val = GetSoftenedFloat(Val);
+
+ return DAG.getStore(ST->getChain(), Val, ST->getBasePtr(),
+ ST->getSrcValue(), ST->getSrcValueOffset(),
+ ST->isVolatile(), ST->getAlignment());
}
/// know that (at least) one result needs expansion.
void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) {
DEBUG(cerr << "Expand float result: "; N->dump(&DAG); cerr << "\n");
- SDOperand Lo, Hi;
- Lo = Hi = SDOperand();
+ SDValue Lo, Hi;
+ Lo = Hi = SDValue();
// See if the target wants to custom expand this node.
- if (TLI.getOperationAction(N->getOpcode(), N->getValueType(0)) ==
- TargetLowering::Custom) {
+ if (TLI.getOperationAction(N->getOpcode(), N->getValueType(ResNo)) ==
+ TargetLowering::Custom) {
// If the target wants to, allow it to lower this itself.
- if (SDNode *P = TLI.ExpandOperationResult(N, DAG)) {
+ if (SDNode *P = TLI.ReplaceNodeResults(N, DAG)) {
// Everything that once used N now uses P. We are guaranteed that the
// result value types of N and the result value types of P match.
ReplaceNodeWith(N, P);
#endif
assert(0 && "Do not know how to expand the result of this operator!");
abort();
+
+ case ISD::MERGE_VALUES: SplitRes_MERGE_VALUES(N, Lo, Hi); break;
+ case ISD::UNDEF: SplitRes_UNDEF(N, Lo, Hi); break;
+ case ISD::SELECT: SplitRes_SELECT(N, Lo, Hi); break;
+ case ISD::SELECT_CC: SplitRes_SELECT_CC(N, Lo, Hi); break;
+
+ case ISD::BIT_CONVERT: ExpandRes_BIT_CONVERT(N, Lo, Hi); break;
+ case ISD::BUILD_PAIR: ExpandRes_BUILD_PAIR(N, Lo, Hi); break;
+ case ISD::EXTRACT_ELEMENT: ExpandRes_EXTRACT_ELEMENT(N, Lo, Hi); break;
+ case ISD::EXTRACT_VECTOR_ELT: ExpandRes_EXTRACT_VECTOR_ELT(N, Lo, Hi); break;
+ case ISD::VAARG: ExpandRes_VAARG(N, Lo, Hi); break;
+
+ case ISD::ConstantFP: ExpandFloatRes_ConstantFP(N, Lo, Hi); break;
+ case ISD::FABS: ExpandFloatRes_FABS(N, Lo, Hi); break;
+ case ISD::FADD: ExpandFloatRes_FADD(N, Lo, Hi); break;
+ case ISD::FCEIL: ExpandFloatRes_FCEIL(N, Lo, Hi); break;
+ case ISD::FCOS: ExpandFloatRes_FCOS(N, Lo, Hi); break;
+ case ISD::FDIV: ExpandFloatRes_FDIV(N, Lo, Hi); break;
+ case ISD::FEXP: ExpandFloatRes_FEXP(N, Lo, Hi); break;
+ case ISD::FEXP2: ExpandFloatRes_FEXP2(N, Lo, Hi); break;
+ case ISD::FFLOOR: ExpandFloatRes_FFLOOR(N, Lo, Hi); break;
+ case ISD::FLOG: ExpandFloatRes_FLOG(N, Lo, Hi); break;
+ case ISD::FLOG2: ExpandFloatRes_FLOG2(N, Lo, Hi); break;
+ case ISD::FLOG10: ExpandFloatRes_FLOG10(N, Lo, Hi); break;
+ case ISD::FMUL: ExpandFloatRes_FMUL(N, Lo, Hi); break;
+ case ISD::FNEARBYINT: ExpandFloatRes_FNEARBYINT(N, Lo, Hi); break;
+ case ISD::FNEG: ExpandFloatRes_FNEG(N, Lo, Hi); break;
+ case ISD::FP_EXTEND: ExpandFloatRes_FP_EXTEND(N, Lo, Hi); break;
+ case ISD::FPOW: ExpandFloatRes_FPOW(N, Lo, Hi); break;
+ case ISD::FPOWI: ExpandFloatRes_FPOWI(N, Lo, Hi); break;
+ case ISD::FRINT: ExpandFloatRes_FRINT(N, Lo, Hi); break;
+ case ISD::FSIN: ExpandFloatRes_FABS(N, Lo, Hi); break;
+ case ISD::FSQRT: ExpandFloatRes_FSQRT(N, Lo, Hi); break;
+ case ISD::FSUB: ExpandFloatRes_FSUB(N, Lo, Hi); break;
+ case ISD::FTRUNC: ExpandFloatRes_FTRUNC(N, Lo, Hi); break;
+ case ISD::LOAD: ExpandFloatRes_LOAD(N, Lo, Hi); break;
+ case ISD::SINT_TO_FP:
+ case ISD::UINT_TO_FP: ExpandFloatRes_XINT_TO_FP(N, Lo, Hi); break;
}
// If Lo/Hi is null, the sub-method took care of registering results etc.
- if (Lo.Val)
- SetExpandedFloat(SDOperand(N, ResNo), Lo, Hi);
+ if (Lo.getNode())
+ SetExpandedFloat(SDValue(N, ResNo), Lo, Hi);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo,
+ SDValue &Hi) {
+ MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+ assert(NVT.getSizeInBits() == integerPartWidth &&
+ "Do not know how to expand this float constant!");
+ APInt C = cast<ConstantFPSDNode>(N)->getValueAPF().bitcastToAPInt();
+ Lo = DAG.getConstantFP(APFloat(APInt(integerPartWidth, 1,
+ &C.getRawData()[1])), NVT);
+ Hi = DAG.getConstantFP(APFloat(APInt(integerPartWidth, 1,
+ &C.getRawData()[0])), NVT);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FABS(SDNode *N, SDValue &Lo,
+ SDValue &Hi) {
+ assert(N->getValueType(0) == MVT::ppcf128 &&
+ "Logic only correct for ppcf128!");
+ SDValue Tmp;
+ GetExpandedFloat(N->getOperand(0), Lo, Tmp);
+ Hi = DAG.getNode(ISD::FABS, Tmp.getValueType(), Tmp);
+ // Lo = Hi==fabs(Hi) ? Lo : -Lo;
+ Lo = DAG.getNode(ISD::SELECT_CC, Lo.getValueType(), Tmp, Hi, Lo,
+ DAG.getNode(ISD::FNEG, Lo.getValueType(), Lo),
+ DAG.getCondCode(ISD::SETEQ));
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FADD(SDNode *N, SDValue &Lo,
+ SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::ADD_F32, RTLIB::ADD_F64,
+ RTLIB::ADD_F80, RTLIB::ADD_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FCEIL(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::CEIL_F32, RTLIB::CEIL_F64,
+ RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FCOS(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::COS_F32, RTLIB::COS_F64,
+ RTLIB::COS_F80, RTLIB::COS_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FDIV(SDNode *N, SDValue &Lo,
+ SDValue &Hi) {
+ SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
+ SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
+ RTLIB::DIV_F32,
+ RTLIB::DIV_F64,
+ RTLIB::DIV_F80,
+ RTLIB::DIV_PPCF128),
+ N->getValueType(0), Ops, 2, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FEXP(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::EXP_F32, RTLIB::EXP_F64,
+ RTLIB::EXP_F80, RTLIB::EXP_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FEXP2(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::EXP2_F32, RTLIB::EXP2_F64,
+ RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FFLOOR(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::FLOOR_F32,RTLIB::FLOOR_F64,
+ RTLIB::FLOOR_F80,RTLIB::FLOOR_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FLOG(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::LOG_F32, RTLIB::LOG_F64,
+ RTLIB::LOG_F80, RTLIB::LOG_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FLOG2(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::LOG2_F32, RTLIB::LOG2_F64,
+ RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FLOG10(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::LOG10_F32,RTLIB::LOG10_F64,
+ RTLIB::LOG10_F80,RTLIB::LOG10_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FMUL(SDNode *N, SDValue &Lo,
+ SDValue &Hi) {
+ SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
+ SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
+ RTLIB::MUL_F32,
+ RTLIB::MUL_F64,
+ RTLIB::MUL_F80,
+ RTLIB::MUL_PPCF128),
+ N->getValueType(0), Ops, 2, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FNEARBYINT(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::NEARBYINT_F32,
+ RTLIB::NEARBYINT_F64,
+ RTLIB::NEARBYINT_F80,
+ RTLIB::NEARBYINT_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FNEG(SDNode *N, SDValue &Lo,
+ SDValue &Hi) {
+ GetExpandedFloat(N->getOperand(0), Lo, Hi);
+ Lo = DAG.getNode(ISD::FNEG, Lo.getValueType(), Lo);
+ Hi = DAG.getNode(ISD::FNEG, Hi.getValueType(), Hi);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FP_EXTEND(SDNode *N, SDValue &Lo,
+ SDValue &Hi) {
+ MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
+ Hi = DAG.getNode(ISD::FP_EXTEND, NVT, N->getOperand(0));
+ Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FPOW(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::POW_F32, RTLIB::POW_F64,
+ RTLIB::POW_F80, RTLIB::POW_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FPOWI(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::POWI_F32, RTLIB::POWI_F64,
+ RTLIB::POWI_F80, RTLIB::POWI_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FRINT(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::RINT_F32, RTLIB::RINT_F64,
+ RTLIB::RINT_F80, RTLIB::RINT_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FSIN(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::SIN_F32, RTLIB::SIN_F64,
+ RTLIB::SIN_F80, RTLIB::SIN_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FSQRT(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::SQRT_F32, RTLIB::SQRT_F64,
+ RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FSUB(SDNode *N, SDValue &Lo,
+ SDValue &Hi) {
+ SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
+ SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
+ RTLIB::SUB_F32,
+ RTLIB::SUB_F64,
+ RTLIB::SUB_F80,
+ RTLIB::SUB_PPCF128),
+ N->getValueType(0), Ops, 2, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_FTRUNC(SDNode *N,
+ SDValue &Lo, SDValue &Hi) {
+ SDValue Call = LibCallify(GetFPLibCall(N->getValueType(0),
+ RTLIB::TRUNC_F32, RTLIB::TRUNC_F64,
+ RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128),
+ N, false);
+ assert(Call.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Call.getOperand(0); Hi = Call.getOperand(1);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_LOAD(SDNode *N, SDValue &Lo,
+ SDValue &Hi) {
+ if (ISD::isNormalLoad(N)) {
+ ExpandRes_NormalLoad(N, Lo, Hi);
+ return;
+ }
+
+ assert(ISD::isUNINDEXEDLoad(N) && "Indexed load during type legalization!");
+ LoadSDNode *LD = cast<LoadSDNode>(N);
+ SDValue Chain = LD->getChain();
+ SDValue Ptr = LD->getBasePtr();
+
+ MVT NVT = TLI.getTypeToTransformTo(LD->getValueType(0));
+ assert(NVT.isByteSized() && "Expanded type not byte sized!");
+ assert(LD->getMemoryVT().bitsLE(NVT) && "Float type not round?");
+
+ Hi = DAG.getExtLoad(LD->getExtensionType(), NVT, Chain, Ptr,
+ LD->getSrcValue(), LD->getSrcValueOffset(),
+ LD->getMemoryVT(),
+ LD->isVolatile(), LD->getAlignment());
+
+ // Remember the chain.
+ Chain = Hi.getValue(1);
+
+ // The low part is zero.
+ Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT);
+
+ // Modified the chain - switch anything that used the old chain to use the
+ // new one.
+ ReplaceValueWith(SDValue(LD, 1), Chain);
+}
+
+void DAGTypeLegalizer::ExpandFloatRes_XINT_TO_FP(SDNode *N, SDValue &Lo,
+ SDValue &Hi) {
+ assert(N->getValueType(0) == MVT::ppcf128 && "Unsupported XINT_TO_FP!");
+ MVT VT = N->getValueType(0);
+ MVT NVT = TLI.getTypeToTransformTo(VT);
+ SDValue Src = N->getOperand(0);
+ MVT SrcVT = Src.getValueType();
+
+ // First do an SINT_TO_FP, whether the original was signed or unsigned.
+ if (SrcVT.bitsLE(MVT::i32)) {
+ // The integer can be represented exactly in an f64.
+ Src = DAG.getNode(ISD::SIGN_EXTEND, MVT::i32, Src);
+ Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT);
+ Hi = DAG.getNode(ISD::SINT_TO_FP, NVT, Src);
+ } else {
+ RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
+ if (SrcVT.bitsLE(MVT::i64)) {
+ Src = DAG.getNode(ISD::SIGN_EXTEND, MVT::i64, Src);
+ LC = RTLIB::SINTTOFP_I64_PPCF128;
+ } else if (SrcVT.bitsLE(MVT::i128)) {
+ Src = DAG.getNode(ISD::SIGN_EXTEND, MVT::i128, Src);
+ LC = RTLIB::SINTTOFP_I128_PPCF128;
+ }
+ assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
+
+ Hi = MakeLibCall(LC, VT, &Src, 1, true);
+ assert(Hi.getNode()->getOpcode() == ISD::BUILD_PAIR &&
+ "Call lowered wrongly!");
+ Lo = Hi.getOperand(0); Hi = Hi.getOperand(1);
+ }
+
+ if (N->getOpcode() == ISD::SINT_TO_FP)
+ return;
+
+ // Unsigned - fix up the SINT_TO_FP value just calculated.
+ Hi = DAG.getNode(ISD::BUILD_PAIR, VT, Lo, Hi);
+ SrcVT = Src.getValueType();
+
+ // x>=0 ? (ppcf128)(iN)x : (ppcf128)(iN)x + 2^N; N=32,64,128.
+ static const uint64_t TwoE32[] = { 0x41f0000000000000LL, 0 };
+ static const uint64_t TwoE64[] = { 0x43f0000000000000LL, 0 };
+ static const uint64_t TwoE128[] = { 0x47f0000000000000LL, 0 };
+ const uint64_t *Parts = 0;
+
+ switch (SrcVT.getSimpleVT()) {
+ default:
+ assert(false && "Unsupported UINT_TO_FP!");
+ case MVT::i32:
+ Parts = TwoE32;
+ break;
+ case MVT::i64:
+ Parts = TwoE64;
+ break;
+ case MVT::i128:
+ Parts = TwoE128;
+ break;
+ }
+
+ Lo = DAG.getNode(ISD::FADD, VT, Hi,
+ DAG.getConstantFP(APFloat(APInt(128, 2, Parts)),
+ MVT::ppcf128));
+ Lo = DAG.getNode(ISD::SELECT_CC, VT, Src, DAG.getConstant(0, SrcVT), Lo, Hi,
+ DAG.getCondCode(ISD::SETLT));
+ Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, NVT, Lo, DAG.getIntPtrConstant(1));
+ Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, NVT, Lo, DAG.getIntPtrConstant(0));
}
/// need promotion or expansion as well as the specified one.
bool DAGTypeLegalizer::ExpandFloatOperand(SDNode *N, unsigned OpNo) {
DEBUG(cerr << "Expand float operand: "; N->dump(&DAG); cerr << "\n");
- SDOperand Res(0, 0);
+ SDValue Res = SDValue();
if (TLI.getOperationAction(N->getOpcode(), N->getOperand(OpNo).getValueType())
== TargetLowering::Custom)
- Res = TLI.LowerOperation(SDOperand(N, 0), DAG);
+ Res = TLI.LowerOperation(SDValue(N, 0), DAG);
- if (Res.Val == 0) {
+ if (Res.getNode() == 0) {
switch (N->getOpcode()) {
default:
#ifndef NDEBUG
#endif
assert(0 && "Do not know how to expand this operator's operand!");
abort();
+
+ case ISD::BIT_CONVERT: Res = ExpandOp_BIT_CONVERT(N); break;
+ case ISD::BUILD_VECTOR: Res = ExpandOp_BUILD_VECTOR(N); break;
+ case ISD::EXTRACT_ELEMENT: Res = ExpandOp_EXTRACT_ELEMENT(N); break;
+
+ case ISD::BR_CC: Res = ExpandFloatOp_BR_CC(N); break;
+ case ISD::FP_ROUND: Res = ExpandFloatOp_FP_ROUND(N); break;
+ case ISD::FP_TO_SINT: Res = ExpandFloatOp_FP_TO_SINT(N); break;
+ case ISD::FP_TO_UINT: Res = ExpandFloatOp_FP_TO_UINT(N); break;
+ case ISD::SELECT_CC: Res = ExpandFloatOp_SELECT_CC(N); break;
+ case ISD::SETCC: Res = ExpandFloatOp_SETCC(N); break;
+ case ISD::STORE: Res = ExpandFloatOp_STORE(cast<StoreSDNode>(N),
+ OpNo); break;
}
}
// If the result is null, the sub-method took care of registering results etc.
- if (!Res.Val) return false;
+ if (!Res.getNode()) return false;
// If the result is N, the sub-method updated N in place. Check to see if any
// operands are new, and if so, mark them.
- if (Res.Val == N) {
+ if (Res.getNode() == N) {
// Mark N as new and remark N and its operands. This allows us to correctly
// revisit N if it needs another step of expansion and allows us to visit
// any new operands to N.
assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
"Invalid operand expansion");
- ReplaceValueWith(SDOperand(N, 0), Res);
+ ReplaceValueWith(SDValue(N, 0), Res);
return false;
}
+
+/// FloatExpandSetCCOperands - Expand the operands of a comparison. This code
+/// is shared among BR_CC, SELECT_CC, and SETCC handlers.
+void DAGTypeLegalizer::FloatExpandSetCCOperands(SDValue &NewLHS,
+ SDValue &NewRHS,
+ ISD::CondCode &CCCode) {
+ SDValue LHSLo, LHSHi, RHSLo, RHSHi;
+ GetExpandedFloat(NewLHS, LHSLo, LHSHi);
+ GetExpandedFloat(NewRHS, RHSLo, RHSHi);
+
+ MVT VT = NewLHS.getValueType();
+ assert(VT == MVT::ppcf128 && "Unsupported setcc type!");
+
+ // FIXME: This generated code sucks. We want to generate
+ // FCMPU crN, hi1, hi2
+ // BNE crN, L:
+ // FCMPU crN, lo1, lo2
+ // The following can be improved, but not that much.
+ SDValue Tmp1, Tmp2, Tmp3;
+ Tmp1 = DAG.getSetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, ISD::SETOEQ);
+ Tmp2 = DAG.getSetCC(TLI.getSetCCResultType(LHSLo), LHSLo, RHSLo, CCCode);
+ Tmp3 = DAG.getNode(ISD::AND, Tmp1.getValueType(), Tmp1, Tmp2);
+ Tmp1 = DAG.getSetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, ISD::SETUNE);
+ Tmp2 = DAG.getSetCC(TLI.getSetCCResultType(LHSHi), LHSHi, RHSHi, CCCode);
+ Tmp1 = DAG.getNode(ISD::AND, Tmp1.getValueType(), Tmp1, Tmp2);
+ NewLHS = DAG.getNode(ISD::OR, Tmp1.getValueType(), Tmp1, Tmp3);
+ NewRHS = SDValue(); // LHS is the result, not a compare.
+}
+
+SDValue DAGTypeLegalizer::ExpandFloatOp_BR_CC(SDNode *N) {
+ SDValue NewLHS = N->getOperand(2), NewRHS = N->getOperand(3);
+ ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(1))->get();
+ FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode);
+
+ // If ExpandSetCCOperands returned a scalar, we need to compare the result
+ // against zero to select between true and false values.
+ if (NewRHS.getNode() == 0) {
+ NewRHS = DAG.getConstant(0, NewLHS.getValueType());
+ CCCode = ISD::SETNE;
+ }
+
+ // Update N to have the operands specified.
+ return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0),
+ DAG.getCondCode(CCCode), NewLHS, NewRHS,
+ N->getOperand(4));
+}
+
+SDValue DAGTypeLegalizer::ExpandFloatOp_FP_ROUND(SDNode *N) {
+ assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
+ "Logic only correct for ppcf128!");
+ SDValue Lo, Hi;
+ GetExpandedFloat(N->getOperand(0), Lo, Hi);
+ // Round it the rest of the way (e.g. to f32) if needed.
+ return DAG.getNode(ISD::FP_ROUND, N->getValueType(0), Hi, N->getOperand(1));
+}
+
+SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) {
+ MVT RVT = N->getValueType(0);
+
+ // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on
+ // PPC (the libcall is not available). FIXME: Do this in a less hacky way.
+ if (RVT == MVT::i32) {
+ assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
+ "Logic only correct for ppcf128!");
+ SDValue Res = DAG.getNode(ISD::FP_ROUND_INREG, MVT::ppcf128,
+ N->getOperand(0), DAG.getValueType(MVT::f64));
+ Res = DAG.getNode(ISD::FP_ROUND, MVT::f64, Res, DAG.getIntPtrConstant(1));
+ return DAG.getNode(ISD::FP_TO_SINT, MVT::i32, Res);
+ }
+
+ RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT);
+ assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!");
+ return MakeLibCall(LC, RVT, &N->getOperand(0), 1, false);
+}
+
+SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) {
+ MVT RVT = N->getValueType(0);
+
+ // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on
+ // PPC (the libcall is not available). FIXME: Do this in a less hacky way.
+ if (RVT == MVT::i32) {
+ assert(N->getOperand(0).getValueType() == MVT::ppcf128 &&
+ "Logic only correct for ppcf128!");
+ const uint64_t TwoE31[] = {0x41e0000000000000LL, 0};
+ APFloat APF = APFloat(APInt(128, 2, TwoE31));
+ SDValue Tmp = DAG.getConstantFP(APF, MVT::ppcf128);
+ // X>=2^31 ? (int)(X-2^31)+0x80000000 : (int)X
+ // FIXME: generated code sucks.
+ return DAG.getNode(ISD::SELECT_CC, MVT::i32, N->getOperand(0), Tmp,
+ DAG.getNode(ISD::ADD, MVT::i32,
+ DAG.getNode(ISD::FP_TO_SINT, MVT::i32,
+ DAG.getNode(ISD::FSUB,
+ MVT::ppcf128,
+ N->getOperand(0),
+ Tmp)),
+ DAG.getConstant(0x80000000, MVT::i32)),
+ DAG.getNode(ISD::FP_TO_SINT, MVT::i32, N->getOperand(0)),
+ DAG.getCondCode(ISD::SETGE));
+ }
+
+ RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT);
+ assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!");
+ return MakeLibCall(LC, N->getValueType(0), &N->getOperand(0), 1, false);
+}
+
+SDValue DAGTypeLegalizer::ExpandFloatOp_SELECT_CC(SDNode *N) {
+ SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
+ ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(4))->get();
+ FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode);
+
+ // If ExpandSetCCOperands returned a scalar, we need to compare the result
+ // against zero to select between true and false values.
+ if (NewRHS.getNode() == 0) {
+ NewRHS = DAG.getConstant(0, NewLHS.getValueType());
+ CCCode = ISD::SETNE;
+ }
+
+ // Update N to have the operands specified.
+ return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS,
+ N->getOperand(2), N->getOperand(3),
+ DAG.getCondCode(CCCode));
+}
+
+SDValue DAGTypeLegalizer::ExpandFloatOp_SETCC(SDNode *N) {
+ SDValue NewLHS = N->getOperand(0), NewRHS = N->getOperand(1);
+ ISD::CondCode CCCode = cast<CondCodeSDNode>(N->getOperand(2))->get();
+ FloatExpandSetCCOperands(NewLHS, NewRHS, CCCode);
+
+ // If ExpandSetCCOperands returned a scalar, use it.
+ if (NewRHS.getNode() == 0) {
+ assert(NewLHS.getValueType() == N->getValueType(0) &&
+ "Unexpected setcc expansion!");
+ return NewLHS;
+ }
+
+ // Otherwise, update N to have the operands specified.
+ return DAG.UpdateNodeOperands(SDValue(N, 0), NewLHS, NewRHS,
+ DAG.getCondCode(CCCode));
+}
+
+SDValue DAGTypeLegalizer::ExpandFloatOp_STORE(SDNode *N, unsigned OpNo) {
+ if (ISD::isNormalStore(N))
+ return ExpandOp_NormalStore(N, OpNo);
+
+ assert(ISD::isUNINDEXEDStore(N) && "Indexed store during type legalization!");
+ assert(OpNo == 1 && "Can only expand the stored value so far");
+ StoreSDNode *ST = cast<StoreSDNode>(N);
+
+ SDValue Chain = ST->getChain();
+ SDValue Ptr = ST->getBasePtr();
+
+ MVT NVT = TLI.getTypeToTransformTo(ST->getValue().getValueType());
+ assert(NVT.isByteSized() && "Expanded type not byte sized!");
+ assert(ST->getMemoryVT().bitsLE(NVT) && "Float type not round?");
+
+ SDValue Lo, Hi;
+ GetExpandedOp(ST->getValue(), Lo, Hi);
+
+ return DAG.getTruncStore(Chain, Hi, Ptr,
+ ST->getSrcValue(), ST->getSrcValueOffset(),
+ ST->getMemoryVT(),
+ ST->isVolatile(), ST->getAlignment());
+}
projects / oota-llvm.git / blobdiff