mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-10-20 09:24:58 +00:00
ee4c619b3b
with the result number. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58041 91177308-0d34-0410-b5e6-96231b3b80d8
975 lines
40 KiB
C++
975 lines
40 KiB
C++
//===-------- LegalizeFloatTypes.cpp - Legalization of float types --------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements float type expansion and softening for LegalizeTypes.
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// Softening is the act of turning a computation in an illegal floating point
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// type into a computation in an integer type of the same size; also known as
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// "soft float". For example, turning f32 arithmetic into operations using i32.
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// The resulting integer value is the same as what you would get by performing
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// the floating point operation and bitcasting the result to the integer type.
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// Expansion is the act of changing a computation in an illegal type to be a
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// computation in two identical registers of a smaller type. For example,
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// implementing ppcf128 arithmetic in two f64 registers.
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//
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//===----------------------------------------------------------------------===//
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#include "LegalizeTypes.h"
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using namespace llvm;
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/// GetFPLibCall - Return the right libcall for the given floating point type.
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static RTLIB::Libcall GetFPLibCall(MVT VT,
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RTLIB::Libcall Call_F32,
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RTLIB::Libcall Call_F64,
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RTLIB::Libcall Call_F80,
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RTLIB::Libcall Call_PPCF128) {
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return
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VT == MVT::f32 ? Call_F32 :
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VT == MVT::f64 ? Call_F64 :
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VT == MVT::f80 ? Call_F80 :
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VT == MVT::ppcf128 ? Call_PPCF128 :
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RTLIB::UNKNOWN_LIBCALL;
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}
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//===----------------------------------------------------------------------===//
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// Result Float to Integer Conversion.
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//===----------------------------------------------------------------------===//
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void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) {
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DEBUG(cerr << "Soften float result " << ResNo << ": "; N->dump(&DAG);
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cerr << "\n");
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SDValue R = SDValue();
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switch (N->getOpcode()) {
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default:
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#ifndef NDEBUG
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cerr << "SoftenFloatResult #" << ResNo << ": ";
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N->dump(&DAG); cerr << "\n";
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#endif
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assert(0 && "Do not know how to soften the result of this operator!");
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abort();
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case ISD::BIT_CONVERT: R = SoftenFloatRes_BIT_CONVERT(N); break;
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case ISD::BUILD_PAIR: R = SoftenFloatRes_BUILD_PAIR(N); break;
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case ISD::ConstantFP:
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R = SoftenFloatRes_ConstantFP(cast<ConstantFPSDNode>(N));
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break;
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case ISD::FABS: R = SoftenFloatRes_FABS(N); break;
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case ISD::FADD: R = SoftenFloatRes_FADD(N); break;
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case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N); break;
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case ISD::FDIV: R = SoftenFloatRes_FDIV(N); break;
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case ISD::FMUL: R = SoftenFloatRes_FMUL(N); break;
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case ISD::FP_EXTEND: R = SoftenFloatRes_FP_EXTEND(N); break;
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case ISD::FP_ROUND: R = SoftenFloatRes_FP_ROUND(N); break;
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case ISD::FPOW: R = SoftenFloatRes_FPOW(N); break;
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case ISD::FPOWI: R = SoftenFloatRes_FPOWI(N); break;
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case ISD::FSUB: R = SoftenFloatRes_FSUB(N); break;
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case ISD::LOAD: R = SoftenFloatRes_LOAD(N); break;
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case ISD::SELECT: R = SoftenFloatRes_SELECT(N); break;
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case ISD::SELECT_CC: R = SoftenFloatRes_SELECT_CC(N); break;
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case ISD::SINT_TO_FP: R = SoftenFloatRes_SINT_TO_FP(N); break;
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case ISD::UINT_TO_FP: R = SoftenFloatRes_UINT_TO_FP(N); break;
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}
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// If R is null, the sub-method took care of registering the result.
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if (R.getNode())
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SetSoftenedFloat(SDValue(N, ResNo), R);
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_BIT_CONVERT(SDNode *N) {
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return BitConvertToInteger(N->getOperand(0));
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_BUILD_PAIR(SDNode *N) {
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// Convert the inputs to integers, and build a new pair out of them.
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return DAG.getNode(ISD::BUILD_PAIR,
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TLI.getTypeToTransformTo(N->getValueType(0)),
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BitConvertToInteger(N->getOperand(0)),
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BitConvertToInteger(N->getOperand(1)));
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_ConstantFP(ConstantFPSDNode *N) {
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return DAG.getConstant(N->getValueAPF().bitcastToAPInt(),
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TLI.getTypeToTransformTo(N->getValueType(0)));
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FABS(SDNode *N) {
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MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
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unsigned Size = NVT.getSizeInBits();
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// Mask = ~(1 << (Size-1))
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SDValue Mask = DAG.getConstant(APInt::getAllOnesValue(Size).clear(Size-1),
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NVT);
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SDValue Op = GetSoftenedFloat(N->getOperand(0));
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return DAG.getNode(ISD::AND, NVT, Op, Mask);
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) {
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MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
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SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
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GetSoftenedFloat(N->getOperand(1)) };
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return MakeLibCall(GetFPLibCall(N->getValueType(0),
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RTLIB::ADD_F32,
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RTLIB::ADD_F64,
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RTLIB::ADD_F80,
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RTLIB::ADD_PPCF128),
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NVT, Ops, 2, false);
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) {
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SDValue LHS = GetSoftenedFloat(N->getOperand(0));
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SDValue RHS = BitConvertToInteger(N->getOperand(1));
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MVT LVT = LHS.getValueType();
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MVT RVT = RHS.getValueType();
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unsigned LSize = LVT.getSizeInBits();
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unsigned RSize = RVT.getSizeInBits();
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// First get the sign bit of second operand.
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SDValue SignBit = DAG.getNode(ISD::SHL, RVT, DAG.getConstant(1, RVT),
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DAG.getConstant(RSize - 1,
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TLI.getShiftAmountTy()));
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SignBit = DAG.getNode(ISD::AND, RVT, RHS, SignBit);
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// Shift right or sign-extend it if the two operands have different types.
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int SizeDiff = RVT.getSizeInBits() - LVT.getSizeInBits();
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if (SizeDiff > 0) {
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SignBit = DAG.getNode(ISD::SRL, RVT, SignBit,
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DAG.getConstant(SizeDiff, TLI.getShiftAmountTy()));
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SignBit = DAG.getNode(ISD::TRUNCATE, LVT, SignBit);
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} else if (SizeDiff < 0) {
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SignBit = DAG.getNode(ISD::ANY_EXTEND, LVT, SignBit);
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SignBit = DAG.getNode(ISD::SHL, LVT, SignBit,
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DAG.getConstant(-SizeDiff, TLI.getShiftAmountTy()));
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}
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// Clear the sign bit of the first operand.
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SDValue Mask = DAG.getNode(ISD::SHL, LVT, DAG.getConstant(1, LVT),
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DAG.getConstant(LSize - 1,
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TLI.getShiftAmountTy()));
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Mask = DAG.getNode(ISD::SUB, LVT, Mask, DAG.getConstant(1, LVT));
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LHS = DAG.getNode(ISD::AND, LVT, LHS, Mask);
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// Or the value with the sign bit.
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return DAG.getNode(ISD::OR, LVT, LHS, SignBit);
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) {
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MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
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SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
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GetSoftenedFloat(N->getOperand(1)) };
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return MakeLibCall(GetFPLibCall(N->getValueType(0),
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RTLIB::DIV_F32,
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RTLIB::DIV_F64,
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RTLIB::DIV_F80,
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RTLIB::DIV_PPCF128),
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NVT, Ops, 2, false);
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) {
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MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
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SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
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GetSoftenedFloat(N->getOperand(1)) };
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return MakeLibCall(GetFPLibCall(N->getValueType(0),
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RTLIB::MUL_F32,
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RTLIB::MUL_F64,
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RTLIB::MUL_F80,
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RTLIB::MUL_PPCF128),
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NVT, Ops, 2, false);
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
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MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
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SDValue Op = N->getOperand(0);
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RTLIB::Libcall LC = RTLIB::getFPEXT(Op.getValueType(), N->getValueType(0));
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assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_EXTEND!");
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return MakeLibCall(LC, NVT, &Op, 1, false);
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) {
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MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
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SDValue Op = N->getOperand(0);
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RTLIB::Libcall LC = RTLIB::getFPROUND(Op.getValueType(), N->getValueType(0));
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assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_ROUND!");
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return MakeLibCall(LC, NVT, &Op, 1, false);
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FPOW(SDNode *N) {
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MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
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SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
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GetSoftenedFloat(N->getOperand(1)) };
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return MakeLibCall(GetFPLibCall(N->getValueType(0),
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RTLIB::POW_F32,
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RTLIB::POW_F64,
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RTLIB::POW_F80,
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RTLIB::POW_PPCF128),
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NVT, Ops, 2, false);
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) {
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MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
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SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)), N->getOperand(1) };
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return MakeLibCall(GetFPLibCall(N->getValueType(0),
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RTLIB::POWI_F32,
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RTLIB::POWI_F64,
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RTLIB::POWI_F80,
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RTLIB::POWI_PPCF128),
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NVT, Ops, 2, false);
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
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MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
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SDValue Ops[2] = { GetSoftenedFloat(N->getOperand(0)),
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GetSoftenedFloat(N->getOperand(1)) };
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return MakeLibCall(GetFPLibCall(N->getValueType(0),
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RTLIB::SUB_F32,
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RTLIB::SUB_F64,
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RTLIB::SUB_F80,
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RTLIB::SUB_PPCF128),
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NVT, Ops, 2, false);
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) {
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LoadSDNode *L = cast<LoadSDNode>(N);
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MVT VT = N->getValueType(0);
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MVT NVT = TLI.getTypeToTransformTo(VT);
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SDValue NewL;
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if (L->getExtensionType() == ISD::NON_EXTLOAD) {
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NewL = DAG.getLoad(L->getAddressingMode(), L->getExtensionType(),
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NVT, L->getChain(), L->getBasePtr(), L->getOffset(),
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L->getSrcValue(), L->getSrcValueOffset(), NVT,
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L->isVolatile(), L->getAlignment());
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// Legalized the chain result - switch anything that used the old chain to
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// use the new one.
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ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
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return NewL;
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}
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// Do a non-extending load followed by FP_EXTEND.
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NewL = DAG.getLoad(L->getAddressingMode(), ISD::NON_EXTLOAD,
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L->getMemoryVT(), L->getChain(),
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L->getBasePtr(), L->getOffset(),
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L->getSrcValue(), L->getSrcValueOffset(),
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L->getMemoryVT(),
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L->isVolatile(), L->getAlignment());
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// Legalized the chain result - switch anything that used the old chain to
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// use the new one.
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ReplaceValueWith(SDValue(N, 1), NewL.getValue(1));
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return BitConvertToInteger(DAG.getNode(ISD::FP_EXTEND, VT, NewL));
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT(SDNode *N) {
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SDValue LHS = GetSoftenedFloat(N->getOperand(1));
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SDValue RHS = GetSoftenedFloat(N->getOperand(2));
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return DAG.getNode(ISD::SELECT, LHS.getValueType(), N->getOperand(0),LHS,RHS);
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT_CC(SDNode *N) {
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SDValue LHS = GetSoftenedFloat(N->getOperand(2));
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SDValue RHS = GetSoftenedFloat(N->getOperand(3));
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return DAG.getNode(ISD::SELECT_CC, LHS.getValueType(), N->getOperand(0),
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N->getOperand(1), LHS, RHS, N->getOperand(4));
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_SINT_TO_FP(SDNode *N) {
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SDValue Op = N->getOperand(0);
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MVT RVT = N->getValueType(0);
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RTLIB::Libcall LC = RTLIB::getSINTTOFP(Op.getValueType(), RVT);
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assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported SINT_TO_FP!");
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return MakeLibCall(LC, TLI.getTypeToTransformTo(RVT), &Op, 1, false);
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_UINT_TO_FP(SDNode *N) {
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SDValue Op = N->getOperand(0);
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MVT RVT = N->getValueType(0);
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RTLIB::Libcall LC = RTLIB::getUINTTOFP(Op.getValueType(), RVT);
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assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported UINT_TO_FP!");
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return MakeLibCall(LC, TLI.getTypeToTransformTo(RVT), &Op, 1, false);
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}
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//===----------------------------------------------------------------------===//
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// Operand Float to Integer Conversion..
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//===----------------------------------------------------------------------===//
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bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) {
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DEBUG(cerr << "Soften float operand " << OpNo << ": "; N->dump(&DAG);
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cerr << "\n");
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SDValue Res = SDValue();
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switch (N->getOpcode()) {
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default:
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#ifndef NDEBUG
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cerr << "SoftenFloatOperand Op #" << OpNo << ": ";
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N->dump(&DAG); cerr << "\n";
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#endif
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assert(0 && "Do not know how to soften this operator's operand!");
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abort();
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case ISD::BIT_CONVERT: Res = SoftenFloatOp_BIT_CONVERT(N); break;
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case ISD::BR_CC: Res = SoftenFloatOp_BR_CC(N); break;
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case ISD::FP_ROUND: Res = SoftenFloatOp_FP_ROUND(N); break;
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case ISD::FP_TO_SINT: Res = SoftenFloatOp_FP_TO_SINT(N); break;
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case ISD::FP_TO_UINT: Res = SoftenFloatOp_FP_TO_UINT(N); break;
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case ISD::SELECT_CC: Res = SoftenFloatOp_SELECT_CC(N); break;
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case ISD::SETCC: Res = SoftenFloatOp_SETCC(N); break;
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case ISD::STORE: Res = SoftenFloatOp_STORE(N, OpNo); break;
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}
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// If the result is null, the sub-method took care of registering results etc.
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if (!Res.getNode()) return false;
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// If the result is N, the sub-method updated N in place. Check to see if any
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// operands are new, and if so, mark them.
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if (Res.getNode() == N) {
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// Mark N as new and remark N and its operands. This allows us to correctly
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// revisit N if it needs another step of promotion and allows us to visit
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// any new operands to N.
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ReanalyzeNode(N);
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return true;
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}
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assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
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"Invalid operand expansion");
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ReplaceValueWith(SDValue(N, 0), Res);
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return false;
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}
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/// SoftenSetCCOperands - Soften the operands of a comparison. This code is
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/// shared among BR_CC, SELECT_CC, and SETCC handlers.
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void DAGTypeLegalizer::SoftenSetCCOperands(SDValue &NewLHS, SDValue &NewRHS,
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ISD::CondCode &CCCode) {
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SDValue LHSInt = GetSoftenedFloat(NewLHS);
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SDValue RHSInt = GetSoftenedFloat(NewRHS);
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MVT VT = NewLHS.getValueType();
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assert((VT == MVT::f32 || VT == MVT::f64) && "Unsupported setcc type!");
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// Expand into one or more soft-fp libcall(s).
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RTLIB::Libcall LC1 = RTLIB::UNKNOWN_LIBCALL, LC2 = RTLIB::UNKNOWN_LIBCALL;
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switch (CCCode) {
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case ISD::SETEQ:
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case ISD::SETOEQ:
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LC1 = (VT == MVT::f32) ? RTLIB::OEQ_F32 : RTLIB::OEQ_F64;
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break;
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case ISD::SETNE:
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case ISD::SETUNE:
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LC1 = (VT == MVT::f32) ? RTLIB::UNE_F32 : RTLIB::UNE_F64;
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break;
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case ISD::SETGE:
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case ISD::SETOGE:
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LC1 = (VT == MVT::f32) ? RTLIB::OGE_F32 : RTLIB::OGE_F64;
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break;
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case ISD::SETLT:
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case ISD::SETOLT:
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LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64;
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break;
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case ISD::SETLE:
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case ISD::SETOLE:
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LC1 = (VT == MVT::f32) ? RTLIB::OLE_F32 : RTLIB::OLE_F64;
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break;
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case ISD::SETGT:
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case ISD::SETOGT:
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LC1 = (VT == MVT::f32) ? RTLIB::OGT_F32 : RTLIB::OGT_F64;
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break;
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case ISD::SETUO:
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LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64;
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break;
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case ISD::SETO:
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LC1 = (VT == MVT::f32) ? RTLIB::O_F32 : RTLIB::O_F64;
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break;
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default:
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LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : RTLIB::UO_F64;
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switch (CCCode) {
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case ISD::SETONE:
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// SETONE = SETOLT | SETOGT
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LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : RTLIB::OLT_F64;
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// Fallthrough
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case ISD::SETUGT:
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LC2 = (VT == MVT::f32) ? RTLIB::OGT_F32 : RTLIB::OGT_F64;
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break;
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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),
|
|
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());
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Float Result Expansion
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ExpandFloatResult - This method is called when the specified result of the
|
|
/// specified node is found to need expansion. At this point, the node may also
|
|
/// have invalid operands or may have other results that need promotion, we just
|
|
/// 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");
|
|
SDValue Lo, Hi;
|
|
Lo = Hi = SDValue();
|
|
|
|
// See if the target wants to custom expand this node.
|
|
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.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);
|
|
return;
|
|
}
|
|
}
|
|
|
|
switch (N->getOpcode()) {
|
|
default:
|
|
#ifndef NDEBUG
|
|
cerr << "ExpandFloatResult #" << ResNo << ": ";
|
|
N->dump(&DAG); cerr << "\n";
|
|
#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::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::FDIV: ExpandFloatRes_FDIV(N, Lo, Hi); break;
|
|
case ISD::FMUL: ExpandFloatRes_FMUL(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::FSUB: ExpandFloatRes_FSUB(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.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_FADD(SDNode *N, SDValue &Lo,
|
|
SDValue &Hi) {
|
|
SDValue Ops[2] = { N->getOperand(0), N->getOperand(1) };
|
|
SDValue Call = MakeLibCall(GetFPLibCall(N->getValueType(0),
|
|
RTLIB::ADD_F32,
|
|
RTLIB::ADD_F64,
|
|
RTLIB::ADD_F80,
|
|
RTLIB::ADD_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_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_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_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_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_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_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?");
|
|
|
|
Lo = DAG.getExtLoad(LD->getExtensionType(), NVT, Chain, Ptr,
|
|
LD->getSrcValue(), LD->getSrcValueOffset(),
|
|
LD->getMemoryVT(),
|
|
LD->isVolatile(), LD->getAlignment());
|
|
|
|
// Remember the chain.
|
|
Chain = Lo.getValue(1);
|
|
|
|
// The high part is undefined.
|
|
Hi = DAG.getNode(ISD::UNDEF, 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;
|
|
case MVT::i64:
|
|
Parts = TwoE64;
|
|
case MVT::i128:
|
|
Parts = TwoE128;
|
|
}
|
|
|
|
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));
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Float Operand Expansion
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ExpandFloatOperand - This method is called when the specified operand of the
|
|
/// specified node is found to need expansion. At this point, all of the result
|
|
/// types of the node are known to be legal, but other operands of the node may
|
|
/// 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");
|
|
SDValue Res = SDValue();
|
|
|
|
if (TLI.getOperationAction(N->getOpcode(), N->getOperand(OpNo).getValueType())
|
|
== TargetLowering::Custom)
|
|
Res = TLI.LowerOperation(SDValue(N, 0), DAG);
|
|
|
|
if (Res.getNode() == 0) {
|
|
switch (N->getOpcode()) {
|
|
default:
|
|
#ifndef NDEBUG
|
|
cerr << "ExpandFloatOperand Op #" << OpNo << ": ";
|
|
N->dump(&DAG); cerr << "\n";
|
|
#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.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.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.
|
|
ReanalyzeNode(N);
|
|
return true;
|
|
}
|
|
|
|
assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
|
|
"Invalid operand expansion");
|
|
|
|
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
|
|
// FCMP crN, hi1, hi2
|
|
// BNE crN, L:
|
|
// FCMP 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::SETEQ);
|
|
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::SETNE);
|
|
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);
|
|
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);
|
|
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, Lo, Ptr,
|
|
ST->getSrcValue(), ST->getSrcValueOffset(),
|
|
ST->getMemoryVT(),
|
|
ST->isVolatile(), ST->getAlignment());
|
|
}
|