// Subclass of MipsTargetLowering specialized for mips32/64.
//
//===----------------------------------------------------------------------===//
+#define DEBUG_TYPE "mips-isel"
#include "MipsSEISelLowering.h"
#include "MipsRegisterInfo.h"
#include "MipsTargetMachine.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetInstrInfo.h"
using namespace llvm;
MipsSETargetLowering::MipsSETargetLowering(MipsTargetMachine &TM)
: MipsTargetLowering(TM) {
// Set up the register classes
-
- clearRegisterClasses();
-
addRegisterClass(MVT::i32, &Mips::GPR32RegClass);
if (HasMips64)
addMSAFloatType(MVT::v2f64, &Mips::MSA128DRegClass);
setTargetDAGCombine(ISD::AND);
+ setTargetDAGCombine(ISD::OR);
setTargetDAGCombine(ISD::SRA);
setTargetDAGCombine(ISD::VSELECT);
setTargetDAGCombine(ISD::XOR);
setOperationAction(ISD::BITCAST, Ty, Legal);
setOperationAction(ISD::EXTRACT_VECTOR_ELT, Ty, Legal);
setOperationAction(ISD::INSERT_VECTOR_ELT, Ty, Legal);
+ setOperationAction(ISD::BUILD_VECTOR, Ty, Custom);
if (Ty != MVT::v8f16) {
setOperationAction(ISD::FABS, Ty, Legal);
setOperationAction(ISD::FADD, Ty, Legal);
setOperationAction(ISD::FDIV, Ty, Legal);
+ setOperationAction(ISD::FEXP2, Ty, Legal);
setOperationAction(ISD::FLOG2, Ty, Legal);
setOperationAction(ISD::FMA, Ty, Legal);
setOperationAction(ISD::FMUL, Ty, Legal);
SDLoc DL(ADDENode);
// Initialize accumulator.
- SDValue ACCIn = CurDAG->getNode(MipsISD::InsertLOHI, DL, MVT::Untyped,
+ SDValue ACCIn = CurDAG->getNode(MipsISD::MTLOHI, DL, MVT::Untyped,
ADDCNode->getOperand(1),
ADDENode->getOperand(1));
// replace uses of adde and addc here
if (!SDValue(ADDCNode, 0).use_empty()) {
- SDValue LoOut = CurDAG->getNode(MipsISD::ExtractLO, DL, MVT::i32, MAdd);
+ SDValue LoOut = CurDAG->getNode(MipsISD::MFLO, DL, MVT::i32, MAdd);
CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDCNode, 0), LoOut);
}
if (!SDValue(ADDENode, 0).use_empty()) {
- SDValue HiOut = CurDAG->getNode(MipsISD::ExtractHI, DL, MVT::i32, MAdd);
+ SDValue HiOut = CurDAG->getNode(MipsISD::MFHI, DL, MVT::i32, MAdd);
CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDENode, 0), HiOut);
}
SDLoc DL(SUBENode);
// Initialize accumulator.
- SDValue ACCIn = CurDAG->getNode(MipsISD::InsertLOHI, DL, MVT::Untyped,
+ SDValue ACCIn = CurDAG->getNode(MipsISD::MTLOHI, DL, MVT::Untyped,
SUBCNode->getOperand(0),
SUBENode->getOperand(0));
// replace uses of sube and subc here
if (!SDValue(SUBCNode, 0).use_empty()) {
- SDValue LoOut = CurDAG->getNode(MipsISD::ExtractLO, DL, MVT::i32, MSub);
+ SDValue LoOut = CurDAG->getNode(MipsISD::MFLO, DL, MVT::i32, MSub);
CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBCNode, 0), LoOut);
}
if (!SDValue(SUBENode, 0).use_empty()) {
- SDValue HiOut = CurDAG->getNode(MipsISD::ExtractHI, DL, MVT::i32, MSub);
+ SDValue HiOut = CurDAG->getNode(MipsISD::MFHI, DL, MVT::i32, MSub);
CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBENode, 0), HiOut);
}
return SDValue();
}
+// Determine if the specified node is a constant vector splat.
+//
+// Returns true and sets Imm if:
+// * N is a ISD::BUILD_VECTOR representing a constant splat
+//
+// This function is quite similar to MipsSEDAGToDAGISel::selectVSplat. The
+// differences are that it assumes the MSA has already been checked and the
+// arbitrary requirement for a maximum of 32-bit integers isn't applied (and
+// must not be in order for binsri.d to be selectable).
+static bool isVSplat(SDValue N, APInt &Imm, bool IsLittleEndian) {
+ BuildVectorSDNode *Node = dyn_cast<BuildVectorSDNode>(N.getNode());
+
+ if (Node == NULL)
+ return false;
+
+ APInt SplatValue, SplatUndef;
+ unsigned SplatBitSize;
+ bool HasAnyUndefs;
+
+ if (!Node->isConstantSplat(SplatValue, SplatUndef, SplatBitSize, HasAnyUndefs,
+ 8, !IsLittleEndian))
+ return false;
+
+ Imm = SplatValue;
+
+ return true;
+}
+
+// Test whether the given node is an all-ones build_vector.
+static bool isVectorAllOnes(SDValue N) {
+ // Look through bitcasts. Endianness doesn't matter because we are looking
+ // for an all-ones value.
+ if (N->getOpcode() == ISD::BITCAST)
+ N = N->getOperand(0);
+
+ BuildVectorSDNode *BVN = dyn_cast<BuildVectorSDNode>(N);
+
+ if (!BVN)
+ return false;
+
+ APInt SplatValue, SplatUndef;
+ unsigned SplatBitSize;
+ bool HasAnyUndefs;
+
+ // Endianness doesn't matter in this context because we are looking for
+ // an all-ones value.
+ if (BVN->isConstantSplat(SplatValue, SplatUndef, SplatBitSize, HasAnyUndefs))
+ return SplatValue.isAllOnesValue();
+
+ return false;
+}
+
+// Test whether N is the bitwise inverse of OfNode.
+static bool isBitwiseInverse(SDValue N, SDValue OfNode) {
+ if (N->getOpcode() != ISD::XOR)
+ return false;
+
+ if (isVectorAllOnes(N->getOperand(0)))
+ return N->getOperand(1) == OfNode;
+
+ if (isVectorAllOnes(N->getOperand(1)))
+ return N->getOperand(0) == OfNode;
+
+ return false;
+}
+
+// Perform combines where ISD::OR is the root node.
+//
+// Performs the following transformations:
+// - (or (and $a, $mask), (and $b, $inv_mask)) => (vselect $mask, $a, $b)
+// where $inv_mask is the bitwise inverse of $mask and the 'or' has a 128-bit
+// vector type.
+static SDValue performORCombine(SDNode *N, SelectionDAG &DAG,
+ TargetLowering::DAGCombinerInfo &DCI,
+ const MipsSubtarget *Subtarget) {
+ if (!Subtarget->hasMSA())
+ return SDValue();
+
+ EVT Ty = N->getValueType(0);
+
+ if (!Ty.is128BitVector())
+ return SDValue();
+
+ SDValue Op0 = N->getOperand(0);
+ SDValue Op1 = N->getOperand(1);
+
+ if (Op0->getOpcode() == ISD::AND && Op1->getOpcode() == ISD::AND) {
+ SDValue Op0Op0 = Op0->getOperand(0);
+ SDValue Op0Op1 = Op0->getOperand(1);
+ SDValue Op1Op0 = Op1->getOperand(0);
+ SDValue Op1Op1 = Op1->getOperand(1);
+ bool IsLittleEndian = !Subtarget->isLittle();
+
+ SDValue IfSet, IfClr, Cond;
+ bool IsConstantMask = false;
+ APInt Mask, InvMask;
+
+ // If Op0Op0 is an appropriate mask, try to find it's inverse in either
+ // Op1Op0, or Op1Op1. Keep track of the Cond, IfSet, and IfClr nodes, while
+ // looking.
+ // IfClr will be set if we find a valid match.
+ if (isVSplat(Op0Op0, Mask, IsLittleEndian)) {
+ Cond = Op0Op0;
+ IfSet = Op0Op1;
+
+ if (isVSplat(Op1Op0, InvMask, IsLittleEndian) && Mask == ~InvMask)
+ IfClr = Op1Op1;
+ else if (isVSplat(Op1Op1, InvMask, IsLittleEndian) && Mask == ~InvMask)
+ IfClr = Op1Op0;
+
+ IsConstantMask = true;
+ }
+
+ // If IfClr is not yet set, and Op0Op1 is an appropriate mask, try the same
+ // thing again using this mask.
+ // IfClr will be set if we find a valid match.
+ if (!IfClr.getNode() && isVSplat(Op0Op1, Mask, IsLittleEndian)) {
+ Cond = Op0Op1;
+ IfSet = Op0Op0;
+
+ if (isVSplat(Op1Op0, InvMask, IsLittleEndian) && Mask == ~InvMask)
+ IfClr = Op1Op1;
+ else if (isVSplat(Op1Op1, InvMask, IsLittleEndian) && Mask == ~InvMask)
+ IfClr = Op1Op0;
+
+ IsConstantMask = true;
+ }
+
+ // If IfClr is not yet set, try looking for a non-constant match.
+ // IfClr will be set if we find a valid match amongst the eight
+ // possibilities.
+ if (!IfClr.getNode()) {
+ if (isBitwiseInverse(Op0Op0, Op1Op0)) {
+ Cond = Op1Op0;
+ IfSet = Op1Op1;
+ IfClr = Op0Op1;
+ } else if (isBitwiseInverse(Op0Op1, Op1Op0)) {
+ Cond = Op1Op0;
+ IfSet = Op1Op1;
+ IfClr = Op0Op0;
+ } else if (isBitwiseInverse(Op0Op0, Op1Op1)) {
+ Cond = Op1Op1;
+ IfSet = Op1Op0;
+ IfClr = Op0Op1;
+ } else if (isBitwiseInverse(Op0Op1, Op1Op1)) {
+ Cond = Op1Op1;
+ IfSet = Op1Op0;
+ IfClr = Op0Op0;
+ } else if (isBitwiseInverse(Op1Op0, Op0Op0)) {
+ Cond = Op0Op0;
+ IfSet = Op0Op1;
+ IfClr = Op1Op1;
+ } else if (isBitwiseInverse(Op1Op1, Op0Op0)) {
+ Cond = Op0Op0;
+ IfSet = Op0Op1;
+ IfClr = Op1Op0;
+ } else if (isBitwiseInverse(Op1Op0, Op0Op1)) {
+ Cond = Op0Op1;
+ IfSet = Op0Op0;
+ IfClr = Op1Op1;
+ } else if (isBitwiseInverse(Op1Op1, Op0Op1)) {
+ Cond = Op0Op1;
+ IfSet = Op0Op0;
+ IfClr = Op1Op0;
+ }
+ }
+
+ // At this point, IfClr will be set if we have a valid match.
+ if (!IfClr.getNode())
+ return SDValue();
+
+ assert(Cond.getNode() && IfSet.getNode());
+
+ // Fold degenerate cases.
+ if (IsConstantMask) {
+ if (Mask.isAllOnesValue())
+ return IfSet;
+ else if (Mask == 0)
+ return IfClr;
+ }
+
+ // Transform the DAG into an equivalent VSELECT.
+ return DAG.getNode(ISD::VSELECT, SDLoc(N), Ty, Cond, IfClr, IfSet);
+ }
+
+ return SDValue();
+}
+
static SDValue performSUBECombine(SDNode *N, SelectionDAG &DAG,
TargetLowering::DAGCombinerInfo &DCI,
const MipsSubtarget *Subtarget) {
case ISD::AND:
Val = performANDCombine(N, DAG, DCI, Subtarget);
break;
+ case ISD::OR:
+ Val = performORCombine(N, DAG, DCI, Subtarget);
+ break;
case ISD::SUBE:
return performSUBECombine(N, DAG, DCI, Subtarget);
case ISD::MUL:
break;
}
- if (Val.getNode())
+ if (Val.getNode()) {
+ DEBUG(dbgs() << "\nMipsSE DAG Combine:\n";
+ N->printrWithDepth(dbgs(), &DAG);
+ dbgs() << "\n=> \n";
+ Val.getNode()->printrWithDepth(dbgs(), &DAG);
+ dbgs() << "\n");
return Val;
+ }
return MipsTargetLowering::PerformDAGCombine(N, DCI);
}
return emitINSERT_FW(MI, BB);
case Mips::INSERT_FD_PSEUDO:
return emitINSERT_FD(MI, BB);
+ case Mips::FILL_FW_PSEUDO:
+ return emitFILL_FW(MI, BB);
+ case Mips::FILL_FD_PSEUDO:
+ return emitFILL_FD(MI, BB);
+ case Mips::FEXP2_W_1_PSEUDO:
+ return emitFEXP2_W_1(MI, BB);
+ case Mips::FEXP2_D_1_PSEUDO:
+ return emitFEXP2_D_1(MI, BB);
}
}
SDValue Lo, Hi;
if (HasLo)
- Lo = DAG.getNode(MipsISD::ExtractLO, DL, Ty, Mult);
+ Lo = DAG.getNode(MipsISD::MFLO, DL, Ty, Mult);
if (HasHi)
- Hi = DAG.getNode(MipsISD::ExtractHI, DL, Ty, Mult);
+ Hi = DAG.getNode(MipsISD::MFHI, DL, Ty, Mult);
if (!HasLo || !HasHi)
return HasLo ? Lo : Hi;
DAG.getConstant(0, MVT::i32));
SDValue InHi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, In,
DAG.getConstant(1, MVT::i32));
- return DAG.getNode(MipsISD::InsertLOHI, DL, MVT::Untyped, InLo, InHi);
+ return DAG.getNode(MipsISD::MTLOHI, DL, MVT::Untyped, InLo, InHi);
}
static SDValue extractLOHI(SDValue Op, SDLoc DL, SelectionDAG &DAG) {
- SDValue Lo = DAG.getNode(MipsISD::ExtractLO, DL, MVT::i32, Op);
- SDValue Hi = DAG.getNode(MipsISD::ExtractHI, DL, MVT::i32, Op);
+ SDValue Lo = DAG.getNode(MipsISD::MFLO, DL, MVT::i32, Op);
+ SDValue Hi = DAG.getNode(MipsISD::MFHI, DL, MVT::i32, Op);
return DAG.getNode(ISD::BUILD_PAIR, DL, MVT::i64, Lo, Hi);
}
case Intrinsic::mips_andi_b:
return DAG.getNode(ISD::AND, DL, Op->getValueType(0), Op->getOperand(1),
lowerMSASplatImm(Op, 2, DAG));
+ case Intrinsic::mips_binsli_b:
+ case Intrinsic::mips_binsli_h:
+ case Intrinsic::mips_binsli_w:
+ case Intrinsic::mips_binsli_d: {
+ EVT VecTy = Op->getValueType(0);
+ EVT EltTy = VecTy.getVectorElementType();
+ APInt Mask = APInt::getHighBitsSet(EltTy.getSizeInBits(),
+ Op->getConstantOperandVal(3));
+ return DAG.getNode(ISD::VSELECT, DL, VecTy,
+ DAG.getConstant(Mask, VecTy, true), Op->getOperand(1),
+ Op->getOperand(2));
+ }
+ case Intrinsic::mips_binsri_b:
+ case Intrinsic::mips_binsri_h:
+ case Intrinsic::mips_binsri_w:
+ case Intrinsic::mips_binsri_d: {
+ EVT VecTy = Op->getValueType(0);
+ EVT EltTy = VecTy.getVectorElementType();
+ APInt Mask = APInt::getLowBitsSet(EltTy.getSizeInBits(),
+ Op->getConstantOperandVal(3));
+ return DAG.getNode(ISD::VSELECT, DL, VecTy,
+ DAG.getConstant(Mask, VecTy, true), Op->getOperand(1),
+ Op->getOperand(2));
+ }
+ case Intrinsic::mips_bmnz_v:
+ return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0), Op->getOperand(3),
+ Op->getOperand(2), Op->getOperand(1));
+ case Intrinsic::mips_bmnzi_b:
+ return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0),
+ lowerMSASplatImm(Op, 3, DAG), Op->getOperand(2),
+ Op->getOperand(1));
+ case Intrinsic::mips_bmz_v:
+ return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0), Op->getOperand(3),
+ Op->getOperand(1), Op->getOperand(2));
+ case Intrinsic::mips_bmzi_b:
+ return DAG.getNode(ISD::VSELECT, DL, Op->getValueType(0),
+ lowerMSASplatImm(Op, 3, DAG), Op->getOperand(1),
+ Op->getOperand(2));
case Intrinsic::mips_bnz_b:
case Intrinsic::mips_bnz_h:
case Intrinsic::mips_bnz_w:
// an equivalent v4i32.
return DAG.getNode(ISD::BUILD_VECTOR, DL, ResTy, &Ops[0], Ops.size());
}
+ case Intrinsic::mips_fexp2_w:
+ case Intrinsic::mips_fexp2_d: {
+ EVT ResTy = Op->getValueType(0);
+ return DAG.getNode(
+ ISD::FMUL, SDLoc(Op), ResTy, Op->getOperand(1),
+ DAG.getNode(ISD::FEXP2, SDLoc(Op), ResTy, Op->getOperand(2)));
+ }
case Intrinsic::mips_flog2_w:
case Intrinsic::mips_flog2_d:
return DAG.getNode(ISD::FLOG2, DL, Op->getValueType(0), Op->getOperand(1));
case Intrinsic::mips_ldi_w:
case Intrinsic::mips_ldi_d:
return lowerMSASplatImm(Op, 1, DAG);
+ case Intrinsic::mips_lsa: {
+ EVT ResTy = Op->getValueType(0);
+ return DAG.getNode(ISD::ADD, SDLoc(Op), ResTy, Op->getOperand(1),
+ DAG.getNode(ISD::SHL, SDLoc(Op), ResTy,
+ Op->getOperand(2), Op->getOperand(3)));
+ }
case Intrinsic::mips_maddv_b:
case Intrinsic::mips_maddv_h:
case Intrinsic::mips_maddv_w:
case Intrinsic::mips_slli_d:
return DAG.getNode(ISD::SHL, DL, Op->getValueType(0),
Op->getOperand(1), lowerMSASplatImm(Op, 2, DAG));
+ case Intrinsic::mips_splat_b:
+ case Intrinsic::mips_splat_h:
+ case Intrinsic::mips_splat_w:
+ case Intrinsic::mips_splat_d:
+ // We can't lower via VECTOR_SHUFFLE because it requires constant shuffle
+ // masks, nor can we lower via BUILD_VECTOR & EXTRACT_VECTOR_ELT because
+ // EXTRACT_VECTOR_ELT can't extract i64's on MIPS32.
+ // Instead we lower to MipsISD::VSHF and match from there.
+ return DAG.getNode(MipsISD::VSHF, DL, Op->getValueType(0),
+ lowerMSASplatImm(Op, 2, DAG), Op->getOperand(1),
+ Op->getOperand(1));
case Intrinsic::mips_splati_b:
case Intrinsic::mips_splati_h:
case Intrinsic::mips_splati_w:
case Intrinsic::mips_ld_h:
case Intrinsic::mips_ld_w:
case Intrinsic::mips_ld_d:
- case Intrinsic::mips_ldx_b:
- case Intrinsic::mips_ldx_h:
- case Intrinsic::mips_ldx_w:
- case Intrinsic::mips_ldx_d:
return lowerMSALoadIntr(Op, DAG, Intr);
}
}
case Intrinsic::mips_st_h:
case Intrinsic::mips_st_w:
case Intrinsic::mips_st_d:
- case Intrinsic::mips_stx_b:
- case Intrinsic::mips_stx_h:
- case Intrinsic::mips_stx_w:
- case Intrinsic::mips_stx_d:
return lowerMSAStoreIntr(Op, DAG, Intr);
}
}
/// true.
static bool isSplatVector(const BuildVectorSDNode *N) {
unsigned int nOps = N->getNumOperands();
- assert(nOps > 1 && "isSplat has 0 or 1 sized build vector");
+ assert(nOps > 1 && "isSplatVector has 0 or 1 sized build vector");
SDValue Operand0 = N->getOperand(0);
// =>
// subreg_to_reg $wt:sub_lo, $fs
// insve_w $wd[$n], $wd_in, $wt[0]
-MachineBasicBlock * MipsSETargetLowering::
-emitINSERT_FW(MachineInstr *MI, MachineBasicBlock *BB) const{
+MachineBasicBlock *
+MipsSETargetLowering::emitINSERT_FW(MachineInstr *MI,
+ MachineBasicBlock *BB) const {
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
DebugLoc DL = MI->getDebugLoc();
unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass);
BuildMI(*BB, MI, DL, TII->get(Mips::SUBREG_TO_REG), Wt)
- .addImm(0).addReg(Fs).addImm(Mips::sub_lo);
+ .addImm(0)
+ .addReg(Fs)
+ .addImm(Mips::sub_lo);
BuildMI(*BB, MI, DL, TII->get(Mips::INSVE_W), Wd)
- .addReg(Wd_in).addImm(Lane).addReg(Wt);
+ .addReg(Wd_in)
+ .addImm(Lane)
+ .addReg(Wt);
- MI->eraseFromParent(); // The pseudo instruction is gone now.
+ MI->eraseFromParent(); // The pseudo instruction is gone now.
return BB;
}
// =>
// subreg_to_reg $wt:sub_64, $fs
// insve_d $wd[$n], $wd_in, $wt[0]
-MachineBasicBlock * MipsSETargetLowering::
-emitINSERT_FD(MachineInstr *MI, MachineBasicBlock *BB) const{
+MachineBasicBlock *
+MipsSETargetLowering::emitINSERT_FD(MachineInstr *MI,
+ MachineBasicBlock *BB) const {
assert(Subtarget->isFP64bit());
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
BuildMI(*BB, MI, DL, TII->get(Mips::SUBREG_TO_REG), Wt)
- .addImm(0).addReg(Fs).addImm(Mips::sub_64);
+ .addImm(0)
+ .addReg(Fs)
+ .addImm(Mips::sub_64);
BuildMI(*BB, MI, DL, TII->get(Mips::INSVE_D), Wd)
- .addReg(Wd_in).addImm(Lane).addReg(Wt);
+ .addReg(Wd_in)
+ .addImm(Lane)
+ .addReg(Wt);
+
+ MI->eraseFromParent(); // The pseudo instruction is gone now.
+ return BB;
+}
+
+// Emit the FILL_FW pseudo instruction.
+//
+// fill_fw_pseudo $wd, $fs
+// =>
+// implicit_def $wt1
+// insert_subreg $wt2:subreg_lo, $wt1, $fs
+// splati.w $wd, $wt2[0]
+MachineBasicBlock *
+MipsSETargetLowering::emitFILL_FW(MachineInstr *MI,
+ MachineBasicBlock *BB) const {
+ const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
+ MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
+ DebugLoc DL = MI->getDebugLoc();
+ unsigned Wd = MI->getOperand(0).getReg();
+ unsigned Fs = MI->getOperand(1).getReg();
+ unsigned Wt1 = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass);
+ unsigned Wt2 = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass);
+
+ BuildMI(*BB, MI, DL, TII->get(Mips::IMPLICIT_DEF), Wt1);
+ BuildMI(*BB, MI, DL, TII->get(Mips::INSERT_SUBREG), Wt2)
+ .addReg(Wt1)
+ .addReg(Fs)
+ .addImm(Mips::sub_lo);
+ BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_W), Wd).addReg(Wt2).addImm(0);
+
+ MI->eraseFromParent(); // The pseudo instruction is gone now.
+ return BB;
+}
+
+// Emit the FILL_FD pseudo instruction.
+//
+// fill_fd_pseudo $wd, $fs
+// =>
+// implicit_def $wt1
+// insert_subreg $wt2:subreg_64, $wt1, $fs
+// splati.d $wd, $wt2[0]
+MachineBasicBlock *
+MipsSETargetLowering::emitFILL_FD(MachineInstr *MI,
+ MachineBasicBlock *BB) const {
+ assert(Subtarget->isFP64bit());
+
+ const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
+ MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
+ DebugLoc DL = MI->getDebugLoc();
+ unsigned Wd = MI->getOperand(0).getReg();
+ unsigned Fs = MI->getOperand(1).getReg();
+ unsigned Wt1 = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
+ unsigned Wt2 = RegInfo.createVirtualRegister(&Mips::MSA128DRegClass);
+
+ BuildMI(*BB, MI, DL, TII->get(Mips::IMPLICIT_DEF), Wt1);
+ BuildMI(*BB, MI, DL, TII->get(Mips::INSERT_SUBREG), Wt2)
+ .addReg(Wt1)
+ .addReg(Fs)
+ .addImm(Mips::sub_64);
+ BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_D), Wd).addReg(Wt2).addImm(0);
MI->eraseFromParent(); // The pseudo instruction is gone now.
return BB;
}
+
+// Emit the FEXP2_W_1 pseudo instructions.
+//
+// fexp2_w_1_pseudo $wd, $wt
+// =>
+// ldi.w $ws, 1
+// fexp2.w $wd, $ws, $wt
+MachineBasicBlock *
+MipsSETargetLowering::emitFEXP2_W_1(MachineInstr *MI,
+ MachineBasicBlock *BB) const {
+ const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
+ MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
+ const TargetRegisterClass *RC = &Mips::MSA128WRegClass;
+ unsigned Ws1 = RegInfo.createVirtualRegister(RC);
+ unsigned Ws2 = RegInfo.createVirtualRegister(RC);
+ DebugLoc DL = MI->getDebugLoc();
+
+ // Splat 1.0 into a vector
+ BuildMI(*BB, MI, DL, TII->get(Mips::LDI_W), Ws1).addImm(1);
+ BuildMI(*BB, MI, DL, TII->get(Mips::FFINT_U_W), Ws2).addReg(Ws1);
+
+ // Emit 1.0 * fexp2(Wt)
+ BuildMI(*BB, MI, DL, TII->get(Mips::FEXP2_W), MI->getOperand(0).getReg())
+ .addReg(Ws2)
+ .addReg(MI->getOperand(1).getReg());
+
+ MI->eraseFromParent(); // The pseudo instruction is gone now.
+ return BB;
+}
+
+// Emit the FEXP2_D_1 pseudo instructions.
+//
+// fexp2_d_1_pseudo $wd, $wt
+// =>
+// ldi.d $ws, 1
+// fexp2.d $wd, $ws, $wt
+MachineBasicBlock *
+MipsSETargetLowering::emitFEXP2_D_1(MachineInstr *MI,
+ MachineBasicBlock *BB) const {
+ const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
+ MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
+ const TargetRegisterClass *RC = &Mips::MSA128DRegClass;
+ unsigned Ws1 = RegInfo.createVirtualRegister(RC);
+ unsigned Ws2 = RegInfo.createVirtualRegister(RC);
+ DebugLoc DL = MI->getDebugLoc();
+
+ // Splat 1.0 into a vector
+ BuildMI(*BB, MI, DL, TII->get(Mips::LDI_D), Ws1).addImm(1);
+ BuildMI(*BB, MI, DL, TII->get(Mips::FFINT_U_D), Ws2).addReg(Ws1);
+
+ // Emit 1.0 * fexp2(Wt)
+ BuildMI(*BB, MI, DL, TII->get(Mips::FEXP2_D), MI->getOperand(0).getReg())
+ .addReg(Ws2)
+ .addReg(MI->getOperand(1).getReg());
+
+ MI->eraseFromParent(); // The pseudo instruction is gone now.
+ return BB;
+}
projects / oota-llvm.git / blobdiff