mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-30 05:29:47 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92573 91177308-0d34-0410-b5e6-96231b3b80d8
1388 lines
60 KiB
C++
1388 lines
60 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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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.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(EVT 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(dbgs() << "Soften float result " << ResNo << ": "; N->dump(&DAG);
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dbgs() << "\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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dbgs() << "SoftenFloatResult #" << ResNo << ": ";
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N->dump(&DAG); dbgs() << "\n";
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#endif
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llvm_unreachable("Do not know how to soften the result of this operator!");
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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::EXTRACT_VECTOR_ELT:
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R = SoftenFloatRes_EXTRACT_VECTOR_ELT(N); 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::FCEIL: R = SoftenFloatRes_FCEIL(N); break;
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case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N); break;
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case ISD::FCOS: R = SoftenFloatRes_FCOS(N); break;
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case ISD::FDIV: R = SoftenFloatRes_FDIV(N); break;
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case ISD::FEXP: R = SoftenFloatRes_FEXP(N); break;
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case ISD::FEXP2: R = SoftenFloatRes_FEXP2(N); break;
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case ISD::FFLOOR: R = SoftenFloatRes_FFLOOR(N); break;
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case ISD::FLOG: R = SoftenFloatRes_FLOG(N); break;
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case ISD::FLOG2: R = SoftenFloatRes_FLOG2(N); break;
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case ISD::FLOG10: R = SoftenFloatRes_FLOG10(N); break;
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case ISD::FMUL: R = SoftenFloatRes_FMUL(N); break;
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case ISD::FNEARBYINT: R = SoftenFloatRes_FNEARBYINT(N); break;
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case ISD::FNEG: R = SoftenFloatRes_FNEG(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::FREM: R = SoftenFloatRes_FREM(N); break;
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case ISD::FRINT: R = SoftenFloatRes_FRINT(N); break;
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case ISD::FSIN: R = SoftenFloatRes_FSIN(N); break;
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case ISD::FSQRT: R = SoftenFloatRes_FSQRT(N); break;
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case ISD::FSUB: R = SoftenFloatRes_FSUB(N); break;
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case ISD::FTRUNC: R = SoftenFloatRes_FTRUNC(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:
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case ISD::UINT_TO_FP: R = SoftenFloatRes_XINT_TO_FP(N); break;
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case ISD::UNDEF: R = SoftenFloatRes_UNDEF(N); break;
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case ISD::VAARG: R = SoftenFloatRes_VAARG(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, N->getDebugLoc(),
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TLI.getTypeToTransformTo(*DAG.getContext(), 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(*DAG.getContext(), N->getValueType(0)));
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_EXTRACT_VECTOR_ELT(SDNode *N) {
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SDValue NewOp = BitConvertVectorToIntegerVector(N->getOperand(0));
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return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, N->getDebugLoc(),
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NewOp.getValueType().getVectorElementType(),
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NewOp, N->getOperand(1));
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FABS(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc(), NVT, Op, Mask);
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FADD(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FCEIL(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
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SDValue Op = GetSoftenedFloat(N->getOperand(0));
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return MakeLibCall(GetFPLibCall(N->getValueType(0),
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RTLIB::CEIL_F32,
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RTLIB::CEIL_F64,
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RTLIB::CEIL_F80,
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RTLIB::CEIL_PPCF128),
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NVT, &Op, 1, false, N->getDebugLoc());
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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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DebugLoc dl = N->getDebugLoc();
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EVT LVT = LHS.getValueType();
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EVT 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, dl, 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, dl, 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, dl, RVT, SignBit,
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DAG.getConstant(SizeDiff, TLI.getShiftAmountTy()));
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SignBit = DAG.getNode(ISD::TRUNCATE, dl, LVT, SignBit);
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} else if (SizeDiff < 0) {
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SignBit = DAG.getNode(ISD::ANY_EXTEND, dl, LVT, SignBit);
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SignBit = DAG.getNode(ISD::SHL, dl, 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, dl, 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, dl, LVT, Mask, DAG.getConstant(1, LVT));
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LHS = DAG.getNode(ISD::AND, dl, LVT, LHS, Mask);
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// Or the value with the sign bit.
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return DAG.getNode(ISD::OR, dl, LVT, LHS, SignBit);
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FCOS(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
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SDValue Op = GetSoftenedFloat(N->getOperand(0));
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return MakeLibCall(GetFPLibCall(N->getValueType(0),
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RTLIB::COS_F32,
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RTLIB::COS_F64,
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RTLIB::COS_F80,
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RTLIB::COS_PPCF128),
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NVT, &Op, 1, false, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
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SDValue Op = GetSoftenedFloat(N->getOperand(0));
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return MakeLibCall(GetFPLibCall(N->getValueType(0),
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RTLIB::EXP_F32,
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RTLIB::EXP_F64,
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RTLIB::EXP_F80,
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RTLIB::EXP_PPCF128),
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NVT, &Op, 1, false, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FEXP2(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
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SDValue Op = GetSoftenedFloat(N->getOperand(0));
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return MakeLibCall(GetFPLibCall(N->getValueType(0),
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RTLIB::EXP2_F32,
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RTLIB::EXP2_F64,
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RTLIB::EXP2_F80,
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RTLIB::EXP2_PPCF128),
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NVT, &Op, 1, false, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FFLOOR(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
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SDValue Op = GetSoftenedFloat(N->getOperand(0));
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return MakeLibCall(GetFPLibCall(N->getValueType(0),
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RTLIB::FLOOR_F32,
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RTLIB::FLOOR_F64,
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RTLIB::FLOOR_F80,
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RTLIB::FLOOR_PPCF128),
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NVT, &Op, 1, false, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
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SDValue Op = GetSoftenedFloat(N->getOperand(0));
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return MakeLibCall(GetFPLibCall(N->getValueType(0),
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RTLIB::LOG_F32,
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RTLIB::LOG_F64,
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RTLIB::LOG_F80,
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RTLIB::LOG_PPCF128),
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NVT, &Op, 1, false, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG2(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
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SDValue Op = GetSoftenedFloat(N->getOperand(0));
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return MakeLibCall(GetFPLibCall(N->getValueType(0),
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RTLIB::LOG2_F32,
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RTLIB::LOG2_F64,
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RTLIB::LOG2_F80,
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RTLIB::LOG2_PPCF128),
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NVT, &Op, 1, false, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FLOG10(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
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SDValue Op = GetSoftenedFloat(N->getOperand(0));
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return MakeLibCall(GetFPLibCall(N->getValueType(0),
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RTLIB::LOG10_F32,
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RTLIB::LOG10_F64,
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RTLIB::LOG10_F80,
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RTLIB::LOG10_PPCF128),
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NVT, &Op, 1, false, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FNEARBYINT(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
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SDValue Op = GetSoftenedFloat(N->getOperand(0));
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return MakeLibCall(GetFPLibCall(N->getValueType(0),
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RTLIB::NEARBYINT_F32,
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RTLIB::NEARBYINT_F64,
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RTLIB::NEARBYINT_F80,
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RTLIB::NEARBYINT_PPCF128),
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NVT, &Op, 1, false, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FNEG(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
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// Expand Y = FNEG(X) -> Y = SUB -0.0, X
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SDValue Ops[2] = { DAG.getConstantFP(-0.0, N->getValueType(0)),
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GetSoftenedFloat(N->getOperand(0)) };
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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, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FP_EXTEND(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FP_ROUND(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FPOW(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FPOWI(SDNode *N) {
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assert(N->getOperand(1).getValueType() == MVT::i32 &&
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"Unsupported power type!");
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FREM(SDNode *N) {
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EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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::REM_F32,
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RTLIB::REM_F64,
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RTLIB::REM_F80,
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RTLIB::REM_PPCF128),
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NVT, Ops, 2, false, N->getDebugLoc());
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}
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SDValue DAGTypeLegalizer::SoftenFloatRes_FRINT(SDNode *N) {
|
|
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
|
|
SDValue Op = GetSoftenedFloat(N->getOperand(0));
|
|
return MakeLibCall(GetFPLibCall(N->getValueType(0),
|
|
RTLIB::RINT_F32,
|
|
RTLIB::RINT_F64,
|
|
RTLIB::RINT_F80,
|
|
RTLIB::RINT_PPCF128),
|
|
NVT, &Op, 1, false, N->getDebugLoc());
|
|
}
|
|
|
|
SDValue DAGTypeLegalizer::SoftenFloatRes_FSIN(SDNode *N) {
|
|
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
|
|
SDValue Op = GetSoftenedFloat(N->getOperand(0));
|
|
return MakeLibCall(GetFPLibCall(N->getValueType(0),
|
|
RTLIB::SIN_F32,
|
|
RTLIB::SIN_F64,
|
|
RTLIB::SIN_F80,
|
|
RTLIB::SIN_PPCF128),
|
|
NVT, &Op, 1, false, N->getDebugLoc());
|
|
}
|
|
|
|
SDValue DAGTypeLegalizer::SoftenFloatRes_FSQRT(SDNode *N) {
|
|
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
|
|
SDValue Op = GetSoftenedFloat(N->getOperand(0));
|
|
return MakeLibCall(GetFPLibCall(N->getValueType(0),
|
|
RTLIB::SQRT_F32,
|
|
RTLIB::SQRT_F64,
|
|
RTLIB::SQRT_F80,
|
|
RTLIB::SQRT_PPCF128),
|
|
NVT, &Op, 1, false, N->getDebugLoc());
|
|
}
|
|
|
|
SDValue DAGTypeLegalizer::SoftenFloatRes_FSUB(SDNode *N) {
|
|
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc());
|
|
}
|
|
|
|
SDValue DAGTypeLegalizer::SoftenFloatRes_FTRUNC(SDNode *N) {
|
|
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
|
|
SDValue Op = GetSoftenedFloat(N->getOperand(0));
|
|
return MakeLibCall(GetFPLibCall(N->getValueType(0),
|
|
RTLIB::TRUNC_F32,
|
|
RTLIB::TRUNC_F64,
|
|
RTLIB::TRUNC_F80,
|
|
RTLIB::TRUNC_PPCF128),
|
|
NVT, &Op, 1, false, N->getDebugLoc());
|
|
}
|
|
|
|
SDValue DAGTypeLegalizer::SoftenFloatRes_LOAD(SDNode *N) {
|
|
LoadSDNode *L = cast<LoadSDNode>(N);
|
|
EVT VT = N->getValueType(0);
|
|
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
|
|
DebugLoc dl = N->getDebugLoc();
|
|
|
|
SDValue NewL;
|
|
if (L->getExtensionType() == ISD::NON_EXTLOAD) {
|
|
NewL = DAG.getLoad(L->getAddressingMode(), dl, 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.
|
|
NewL = DAG.getLoad(L->getAddressingMode(), dl, 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, dl, VT, NewL));
|
|
}
|
|
|
|
SDValue DAGTypeLegalizer::SoftenFloatRes_SELECT(SDNode *N) {
|
|
SDValue LHS = GetSoftenedFloat(N->getOperand(1));
|
|
SDValue RHS = GetSoftenedFloat(N->getOperand(2));
|
|
return DAG.getNode(ISD::SELECT, N->getDebugLoc(),
|
|
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, N->getDebugLoc(),
|
|
LHS.getValueType(), N->getOperand(0),
|
|
N->getOperand(1), LHS, RHS, N->getOperand(4));
|
|
}
|
|
|
|
SDValue DAGTypeLegalizer::SoftenFloatRes_UNDEF(SDNode *N) {
|
|
return DAG.getUNDEF(TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)));
|
|
}
|
|
|
|
SDValue DAGTypeLegalizer::SoftenFloatRes_VAARG(SDNode *N) {
|
|
SDValue Chain = N->getOperand(0); // Get the chain.
|
|
SDValue Ptr = N->getOperand(1); // Get the pointer.
|
|
EVT VT = N->getValueType(0);
|
|
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
|
|
DebugLoc dl = N->getDebugLoc();
|
|
|
|
SDValue NewVAARG;
|
|
NewVAARG = DAG.getVAArg(NVT, dl, Chain, Ptr, N->getOperand(2));
|
|
|
|
// Legalized the chain result - switch anything that used the old chain to
|
|
// use the new one.
|
|
ReplaceValueWith(SDValue(N, 1), NewVAARG.getValue(1));
|
|
return NewVAARG;
|
|
}
|
|
|
|
SDValue DAGTypeLegalizer::SoftenFloatRes_XINT_TO_FP(SDNode *N) {
|
|
bool Signed = N->getOpcode() == ISD::SINT_TO_FP;
|
|
EVT SVT = N->getOperand(0).getValueType();
|
|
EVT RVT = N->getValueType(0);
|
|
EVT NVT = EVT();
|
|
DebugLoc dl = N->getDebugLoc();
|
|
|
|
// If the input is not legal, eg: i1 -> fp, then it needs to be promoted to
|
|
// a larger type, eg: i8 -> fp. Even if it is legal, no libcall may exactly
|
|
// match. Look for an appropriate libcall.
|
|
RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
|
|
for (unsigned t = MVT::FIRST_INTEGER_VALUETYPE;
|
|
t <= MVT::LAST_INTEGER_VALUETYPE && LC == RTLIB::UNKNOWN_LIBCALL; ++t) {
|
|
NVT = (MVT::SimpleValueType)t;
|
|
// The source needs to big enough to hold the operand.
|
|
if (NVT.bitsGE(SVT))
|
|
LC = Signed ? RTLIB::getSINTTOFP(NVT, RVT):RTLIB::getUINTTOFP (NVT, RVT);
|
|
}
|
|
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
|
|
|
|
// Sign/zero extend the argument if the libcall takes a larger type.
|
|
SDValue Op = DAG.getNode(Signed ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
|
|
NVT, N->getOperand(0));
|
|
return MakeLibCall(LC, TLI.getTypeToTransformTo(*DAG.getContext(), RVT), &Op, 1, false, dl);
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Operand Float to Integer Conversion..
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
bool DAGTypeLegalizer::SoftenFloatOperand(SDNode *N, unsigned OpNo) {
|
|
DEBUG(dbgs() << "Soften float operand " << OpNo << ": "; N->dump(&DAG);
|
|
dbgs() << "\n");
|
|
SDValue Res = SDValue();
|
|
|
|
switch (N->getOpcode()) {
|
|
default:
|
|
#ifndef NDEBUG
|
|
dbgs() << "SoftenFloatOperand Op #" << OpNo << ": ";
|
|
N->dump(&DAG); dbgs() << "\n";
|
|
#endif
|
|
llvm_unreachable("Do not know how to soften this operator's operand!");
|
|
|
|
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.getNode()) return false;
|
|
|
|
// If the result is N, the sub-method updated N in place. Tell the legalizer
|
|
// core about this.
|
|
if (Res.getNode() == N)
|
|
return true;
|
|
|
|
assert(Res.getValueType() == N->getValueType(0) && N->getNumValues() == 1 &&
|
|
"Invalid operand expansion");
|
|
|
|
ReplaceValueWith(SDValue(N, 0), Res);
|
|
return false;
|
|
}
|
|
|
|
/// 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, DebugLoc dl) {
|
|
SDValue LHSInt = GetSoftenedFloat(NewLHS);
|
|
SDValue RHSInt = GetSoftenedFloat(NewRHS);
|
|
EVT 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!");
|
|
}
|
|
}
|
|
|
|
// Use the target specific return value for comparions lib calls.
|
|
EVT RetVT = TLI.getCmpLibcallReturnType();
|
|
SDValue Ops[2] = { LHSInt, RHSInt };
|
|
NewLHS = MakeLibCall(LC1, RetVT, Ops, 2, false/*sign irrelevant*/, dl);
|
|
NewRHS = DAG.getConstant(0, RetVT);
|
|
CCCode = TLI.getCmpLibcallCC(LC1);
|
|
if (LC2 != RTLIB::UNKNOWN_LIBCALL) {
|
|
SDValue Tmp = DAG.getNode(ISD::SETCC, dl, TLI.getSetCCResultType(RetVT),
|
|
NewLHS, NewRHS, DAG.getCondCode(CCCode));
|
|
NewLHS = MakeLibCall(LC2, RetVT, Ops, 2, false/*sign irrelevant*/, dl);
|
|
NewLHS = DAG.getNode(ISD::SETCC, dl, TLI.getSetCCResultType(RetVT), NewLHS,
|
|
NewRHS, DAG.getCondCode(TLI.getCmpLibcallCC(LC2)));
|
|
NewLHS = DAG.getNode(ISD::OR, dl, Tmp.getValueType(), Tmp, NewLHS);
|
|
NewRHS = SDValue();
|
|
}
|
|
}
|
|
|
|
SDValue DAGTypeLegalizer::SoftenFloatOp_BIT_CONVERT(SDNode *N) {
|
|
return DAG.getNode(ISD::BIT_CONVERT, N->getDebugLoc(), N->getValueType(0),
|
|
GetSoftenedFloat(N->getOperand(0)));
|
|
}
|
|
|
|
SDValue DAGTypeLegalizer::SoftenFloatOp_FP_ROUND(SDNode *N) {
|
|
EVT SVT = N->getOperand(0).getValueType();
|
|
EVT 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, N->getDebugLoc());
|
|
}
|
|
|
|
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, N->getDebugLoc());
|
|
|
|
// 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) {
|
|
EVT 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, N->getDebugLoc());
|
|
}
|
|
|
|
SDValue DAGTypeLegalizer::SoftenFloatOp_FP_TO_UINT(SDNode *N) {
|
|
EVT 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, N->getDebugLoc());
|
|
}
|
|
|
|
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, N->getDebugLoc());
|
|
|
|
// 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, N->getDebugLoc());
|
|
|
|
// 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();
|
|
DebugLoc dl = N->getDebugLoc();
|
|
|
|
if (ST->isTruncatingStore())
|
|
// Do an FP_ROUND followed by a non-truncating store.
|
|
Val = BitConvertToInteger(DAG.getNode(ISD::FP_ROUND, dl, ST->getMemoryVT(),
|
|
Val, DAG.getIntPtrConstant(0)));
|
|
else
|
|
Val = GetSoftenedFloat(Val);
|
|
|
|
return DAG.getStore(ST->getChain(), dl, 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(dbgs() << "Expand float result: "; N->dump(&DAG); dbgs() << "\n");
|
|
SDValue Lo, Hi;
|
|
Lo = Hi = SDValue();
|
|
|
|
// See if the target wants to custom expand this node.
|
|
if (CustomLowerNode(N, N->getValueType(ResNo), true))
|
|
return;
|
|
|
|
switch (N->getOpcode()) {
|
|
default:
|
|
#ifndef NDEBUG
|
|
dbgs() << "ExpandFloatResult #" << ResNo << ": ";
|
|
N->dump(&DAG); dbgs() << "\n";
|
|
#endif
|
|
llvm_unreachable("Do not know how to expand the result of this operator!");
|
|
|
|
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_FSIN(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.getNode())
|
|
SetExpandedFloat(SDValue(N, ResNo), Lo, Hi);
|
|
}
|
|
|
|
void DAGTypeLegalizer::ExpandFloatRes_ConstantFP(SDNode *N, SDValue &Lo,
|
|
SDValue &Hi) {
|
|
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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!");
|
|
DebugLoc dl = N->getDebugLoc();
|
|
SDValue Tmp;
|
|
GetExpandedFloat(N->getOperand(0), Lo, Tmp);
|
|
Hi = DAG.getNode(ISD::FABS, dl, Tmp.getValueType(), Tmp);
|
|
// Lo = Hi==fabs(Hi) ? Lo : -Lo;
|
|
Lo = DAG.getNode(ISD::SELECT_CC, dl, Lo.getValueType(), Tmp, Hi, Lo,
|
|
DAG.getNode(ISD::FNEG, dl, 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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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,
|
|
N->getDebugLoc());
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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,
|
|
N->getDebugLoc());
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
void DAGTypeLegalizer::ExpandFloatRes_FNEG(SDNode *N, SDValue &Lo,
|
|
SDValue &Hi) {
|
|
DebugLoc dl = N->getDebugLoc();
|
|
GetExpandedFloat(N->getOperand(0), Lo, Hi);
|
|
Lo = DAG.getNode(ISD::FNEG, dl, Lo.getValueType(), Lo);
|
|
Hi = DAG.getNode(ISD::FNEG, dl, Hi.getValueType(), Hi);
|
|
}
|
|
|
|
void DAGTypeLegalizer::ExpandFloatRes_FP_EXTEND(SDNode *N, SDValue &Lo,
|
|
SDValue &Hi) {
|
|
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
|
|
Hi = DAG.getNode(ISD::FP_EXTEND, N->getDebugLoc(), 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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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,
|
|
N->getDebugLoc());
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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);
|
|
GetPairElements(Call, Lo, Hi);
|
|
}
|
|
|
|
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();
|
|
DebugLoc dl = N->getDebugLoc();
|
|
|
|
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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(), dl, 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!");
|
|
EVT VT = N->getValueType(0);
|
|
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), VT);
|
|
SDValue Src = N->getOperand(0);
|
|
EVT SrcVT = Src.getValueType();
|
|
bool isSigned = N->getOpcode() == ISD::SINT_TO_FP;
|
|
DebugLoc dl = N->getDebugLoc();
|
|
|
|
// First do an SINT_TO_FP, whether the original was signed or unsigned.
|
|
// When promoting partial word types to i32 we must honor the signedness,
|
|
// though.
|
|
if (SrcVT.bitsLE(MVT::i32)) {
|
|
// The integer can be represented exactly in an f64.
|
|
Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
|
|
MVT::i32, Src);
|
|
Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT);
|
|
Hi = DAG.getNode(ISD::SINT_TO_FP, dl, NVT, Src);
|
|
} else {
|
|
RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
|
|
if (SrcVT.bitsLE(MVT::i64)) {
|
|
Src = DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, dl,
|
|
MVT::i64, Src);
|
|
LC = RTLIB::SINTTOFP_I64_PPCF128;
|
|
} else if (SrcVT.bitsLE(MVT::i128)) {
|
|
Src = DAG.getNode(ISD::SIGN_EXTEND, dl, MVT::i128, Src);
|
|
LC = RTLIB::SINTTOFP_I128_PPCF128;
|
|
}
|
|
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported XINT_TO_FP!");
|
|
|
|
Hi = MakeLibCall(LC, VT, &Src, 1, true, dl);
|
|
GetPairElements(Hi, Lo, Hi);
|
|
}
|
|
|
|
if (isSigned)
|
|
return;
|
|
|
|
// Unsigned - fix up the SINT_TO_FP value just calculated.
|
|
Hi = DAG.getNode(ISD::BUILD_PAIR, dl, 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().SimpleTy) {
|
|
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, dl, VT, Hi,
|
|
DAG.getConstantFP(APFloat(APInt(128, 2, Parts)),
|
|
MVT::ppcf128));
|
|
Lo = DAG.getNode(ISD::SELECT_CC, dl, VT, Src, DAG.getConstant(0, SrcVT),
|
|
Lo, Hi, DAG.getCondCode(ISD::SETLT));
|
|
GetPairElements(Lo, Lo, Hi);
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// 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(dbgs() << "Expand float operand: "; N->dump(&DAG); dbgs() << "\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
|
|
dbgs() << "ExpandFloatOperand Op #" << OpNo << ": ";
|
|
N->dump(&DAG); dbgs() << "\n";
|
|
#endif
|
|
llvm_unreachable("Do not know how to expand this operator's operand!");
|
|
|
|
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. Tell the legalizer
|
|
// core about this.
|
|
if (Res.getNode() == 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,
|
|
DebugLoc dl) {
|
|
SDValue LHSLo, LHSHi, RHSLo, RHSHi;
|
|
GetExpandedFloat(NewLHS, LHSLo, LHSHi);
|
|
GetExpandedFloat(NewRHS, RHSLo, RHSHi);
|
|
|
|
EVT 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(dl, TLI.getSetCCResultType(LHSHi.getValueType()),
|
|
LHSHi, RHSHi, ISD::SETOEQ);
|
|
Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSLo.getValueType()),
|
|
LHSLo, RHSLo, CCCode);
|
|
Tmp3 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2);
|
|
Tmp1 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSHi.getValueType()),
|
|
LHSHi, RHSHi, ISD::SETUNE);
|
|
Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(LHSHi.getValueType()),
|
|
LHSHi, RHSHi, CCCode);
|
|
Tmp1 = DAG.getNode(ISD::AND, dl, Tmp1.getValueType(), Tmp1, Tmp2);
|
|
NewLHS = DAG.getNode(ISD::OR, dl, 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, N->getDebugLoc());
|
|
|
|
// 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->getDebugLoc(),
|
|
N->getValueType(0), Hi, N->getOperand(1));
|
|
}
|
|
|
|
SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) {
|
|
EVT RVT = N->getValueType(0);
|
|
DebugLoc dl = N->getDebugLoc();
|
|
|
|
// 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, dl, MVT::ppcf128,
|
|
N->getOperand(0), DAG.getValueType(MVT::f64));
|
|
Res = DAG.getNode(ISD::FP_ROUND, dl, MVT::f64, Res,
|
|
DAG.getIntPtrConstant(1));
|
|
return DAG.getNode(ISD::FP_TO_SINT, dl, 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, dl);
|
|
}
|
|
|
|
SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) {
|
|
EVT RVT = N->getValueType(0);
|
|
DebugLoc dl = N->getDebugLoc();
|
|
|
|
// 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, dl, MVT::i32, N->getOperand(0), Tmp,
|
|
DAG.getNode(ISD::ADD, dl, MVT::i32,
|
|
DAG.getNode(ISD::FP_TO_SINT, dl, MVT::i32,
|
|
DAG.getNode(ISD::FSUB, dl,
|
|
MVT::ppcf128,
|
|
N->getOperand(0),
|
|
Tmp)),
|
|
DAG.getConstant(0x80000000, MVT::i32)),
|
|
DAG.getNode(ISD::FP_TO_SINT, dl,
|
|
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, dl);
|
|
}
|
|
|
|
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, N->getDebugLoc());
|
|
|
|
// 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, N->getDebugLoc());
|
|
|
|
// 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();
|
|
|
|
EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), 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, N->getDebugLoc(), Hi, Ptr,
|
|
ST->getSrcValue(), ST->getSrcValueOffset(),
|
|
ST->getMemoryVT(),
|
|
ST->isVolatile(), ST->getAlignment());
|
|
}
|