// selection DAG.
//
//===----------------------------------------------------------------------===//
-
#define DEBUG_TYPE "mips-lower"
#include "MipsISelLowering.h"
+#include "InstPrinter/MipsInstPrinter.h"
+#include "MCTargetDesc/MipsBaseInfo.h"
#include "MipsMachineFunction.h"
+#include "MipsSubtarget.h"
#include "MipsTargetMachine.h"
#include "MipsTargetObjectFile.h"
-#include "MipsSubtarget.h"
-#include "InstPrinter/MipsInstPrinter.h"
-#include "MCTargetDesc/MipsBaseInfo.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/Function.h"
-#include "llvm/GlobalVariable.h"
-#include "llvm/Intrinsics.h"
-#include "llvm/CallingConv.h"
+#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/CodeGen/ValueTypes.h"
+#include "llvm/IR/CallingConv.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/GlobalVariable.h"
+#include "llvm/IR/Intrinsics.h"
+#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
+STATISTIC(NumTailCalls, "Number of tail calls");
+
+static cl::opt<bool>
+LargeGOT("mxgot", cl::Hidden,
+ cl::desc("MIPS: Enable GOT larger than 64k."), cl::init(false));
+
+static const uint16_t O32IntRegs[4] = {
+ Mips::A0, Mips::A1, Mips::A2, Mips::A3
+};
+
+static const uint16_t Mips64IntRegs[8] = {
+ Mips::A0_64, Mips::A1_64, Mips::A2_64, Mips::A3_64,
+ Mips::T0_64, Mips::T1_64, Mips::T2_64, Mips::T3_64
+};
+
+static const uint16_t Mips64DPRegs[8] = {
+ Mips::D12_64, Mips::D13_64, Mips::D14_64, Mips::D15_64,
+ Mips::D16_64, Mips::D17_64, Mips::D18_64, Mips::D19_64
+};
+
// If I is a shifted mask, set the size (Size) and the first bit of the
// mask (Pos), and return true.
// For example, if I is 0x003ff800, (Pos, Size) = (11, 11).
-static bool IsShiftedMask(uint64_t I, uint64_t &Pos, uint64_t &Size) {
+static bool isShiftedMask(uint64_t I, uint64_t &Pos, uint64_t &Size) {
if (!isShiftedMask_64(I))
return false;
return true;
}
-static SDValue GetGlobalReg(SelectionDAG &DAG, EVT Ty) {
+SDValue MipsTargetLowering::getGlobalReg(SelectionDAG &DAG, EVT Ty) const {
MipsFunctionInfo *FI = DAG.getMachineFunction().getInfo<MipsFunctionInfo>();
return DAG.getRegister(FI->getGlobalBaseReg(), Ty);
}
+static SDValue getTargetNode(SDValue Op, SelectionDAG &DAG, unsigned Flag) {
+ EVT Ty = Op.getValueType();
+
+ if (GlobalAddressSDNode *N = dyn_cast<GlobalAddressSDNode>(Op))
+ return DAG.getTargetGlobalAddress(N->getGlobal(), Op.getDebugLoc(), Ty, 0,
+ Flag);
+ if (ExternalSymbolSDNode *N = dyn_cast<ExternalSymbolSDNode>(Op))
+ return DAG.getTargetExternalSymbol(N->getSymbol(), Ty, Flag);
+ if (BlockAddressSDNode *N = dyn_cast<BlockAddressSDNode>(Op))
+ return DAG.getTargetBlockAddress(N->getBlockAddress(), Ty, 0, Flag);
+ if (JumpTableSDNode *N = dyn_cast<JumpTableSDNode>(Op))
+ return DAG.getTargetJumpTable(N->getIndex(), Ty, Flag);
+ if (ConstantPoolSDNode *N = dyn_cast<ConstantPoolSDNode>(Op))
+ return DAG.getTargetConstantPool(N->getConstVal(), Ty, N->getAlignment(),
+ N->getOffset(), Flag);
+
+ llvm_unreachable("Unexpected node type.");
+ return SDValue();
+}
+
+static SDValue getAddrNonPIC(SDValue Op, SelectionDAG &DAG) {
+ DebugLoc DL = Op.getDebugLoc();
+ EVT Ty = Op.getValueType();
+ SDValue Hi = getTargetNode(Op, DAG, MipsII::MO_ABS_HI);
+ SDValue Lo = getTargetNode(Op, DAG, MipsII::MO_ABS_LO);
+ return DAG.getNode(ISD::ADD, DL, Ty,
+ DAG.getNode(MipsISD::Hi, DL, Ty, Hi),
+ DAG.getNode(MipsISD::Lo, DL, Ty, Lo));
+}
+
+SDValue MipsTargetLowering::getAddrLocal(SDValue Op, SelectionDAG &DAG,
+ bool HasMips64) const {
+ DebugLoc DL = Op.getDebugLoc();
+ EVT Ty = Op.getValueType();
+ unsigned GOTFlag = HasMips64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT;
+ SDValue GOT = DAG.getNode(MipsISD::Wrapper, DL, Ty, getGlobalReg(DAG, Ty),
+ getTargetNode(Op, DAG, GOTFlag));
+ SDValue Load = DAG.getLoad(Ty, DL, DAG.getEntryNode(), GOT,
+ MachinePointerInfo::getGOT(), false, false, false,
+ 0);
+ unsigned LoFlag = HasMips64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO;
+ SDValue Lo = DAG.getNode(MipsISD::Lo, DL, Ty, getTargetNode(Op, DAG, LoFlag));
+ return DAG.getNode(ISD::ADD, DL, Ty, Load, Lo);
+}
+
+SDValue MipsTargetLowering::getAddrGlobal(SDValue Op, SelectionDAG &DAG,
+ unsigned Flag) const {
+ DebugLoc DL = Op.getDebugLoc();
+ EVT Ty = Op.getValueType();
+ SDValue Tgt = DAG.getNode(MipsISD::Wrapper, DL, Ty, getGlobalReg(DAG, Ty),
+ getTargetNode(Op, DAG, Flag));
+ return DAG.getLoad(Ty, DL, DAG.getEntryNode(), Tgt,
+ MachinePointerInfo::getGOT(), false, false, false, 0);
+}
+
+SDValue MipsTargetLowering::getAddrGlobalLargeGOT(SDValue Op, SelectionDAG &DAG,
+ unsigned HiFlag,
+ unsigned LoFlag) const {
+ DebugLoc DL = Op.getDebugLoc();
+ EVT Ty = Op.getValueType();
+ SDValue Hi = DAG.getNode(MipsISD::Hi, DL, Ty, getTargetNode(Op, DAG, HiFlag));
+ Hi = DAG.getNode(ISD::ADD, DL, Ty, Hi, getGlobalReg(DAG, Ty));
+ SDValue Wrapper = DAG.getNode(MipsISD::Wrapper, DL, Ty, Hi,
+ getTargetNode(Op, DAG, LoFlag));
+ return DAG.getLoad(Ty, DL, DAG.getEntryNode(), Wrapper,
+ MachinePointerInfo::getGOT(), false, false, false, 0);
+}
+
const char *MipsTargetLowering::getTargetNodeName(unsigned Opcode) const {
switch (Opcode) {
case MipsISD::JmpLink: return "MipsISD::JmpLink";
+ case MipsISD::TailCall: return "MipsISD::TailCall";
case MipsISD::Hi: return "MipsISD::Hi";
case MipsISD::Lo: return "MipsISD::Lo";
case MipsISD::GPRel: return "MipsISD::GPRel";
case MipsISD::ThreadPointer: return "MipsISD::ThreadPointer";
case MipsISD::Ret: return "MipsISD::Ret";
+ case MipsISD::EH_RETURN: return "MipsISD::EH_RETURN";
case MipsISD::FPBrcond: return "MipsISD::FPBrcond";
case MipsISD::FPCmp: return "MipsISD::FPCmp";
case MipsISD::CMovFP_T: return "MipsISD::CMovFP_T";
case MipsISD::CMovFP_F: return "MipsISD::CMovFP_F";
case MipsISD::FPRound: return "MipsISD::FPRound";
+ case MipsISD::ExtractLOHI: return "MipsISD::ExtractLOHI";
+ case MipsISD::InsertLOHI: return "MipsISD::InsertLOHI";
+ case MipsISD::Mult: return "MipsISD::Mult";
+ case MipsISD::Multu: return "MipsISD::Multu";
case MipsISD::MAdd: return "MipsISD::MAdd";
case MipsISD::MAddu: return "MipsISD::MAddu";
case MipsISD::MSub: return "MipsISD::MSub";
case MipsISD::MSubu: return "MipsISD::MSubu";
case MipsISD::DivRem: return "MipsISD::DivRem";
case MipsISD::DivRemU: return "MipsISD::DivRemU";
+ case MipsISD::DivRem16: return "MipsISD::DivRem16";
+ case MipsISD::DivRemU16: return "MipsISD::DivRemU16";
case MipsISD::BuildPairF64: return "MipsISD::BuildPairF64";
case MipsISD::ExtractElementF64: return "MipsISD::ExtractElementF64";
case MipsISD::Wrapper: return "MipsISD::Wrapper";
- case MipsISD::DynAlloc: return "MipsISD::DynAlloc";
case MipsISD::Sync: return "MipsISD::Sync";
case MipsISD::Ext: return "MipsISD::Ext";
case MipsISD::Ins: return "MipsISD::Ins";
case MipsISD::MTHLIP: return "MipsISD::MTHLIP";
case MipsISD::MULT: return "MipsISD::MULT";
case MipsISD::MULTU: return "MipsISD::MULTU";
- case MipsISD::MADD_DSP: return "MipsISD::MADD_DSPDSP";
+ case MipsISD::MADD_DSP: return "MipsISD::MADD_DSP";
case MipsISD::MADDU_DSP: return "MipsISD::MADDU_DSP";
case MipsISD::MSUB_DSP: return "MipsISD::MSUB_DSP";
case MipsISD::MSUBU_DSP: return "MipsISD::MSUBU_DSP";
Subtarget(&TM.getSubtarget<MipsSubtarget>()),
HasMips64(Subtarget->hasMips64()), IsN64(Subtarget->isABI_N64()),
IsO32(Subtarget->isABI_O32()) {
-
// Mips does not have i1 type, so use i32 for
// setcc operations results (slt, sgt, ...).
setBooleanContents(ZeroOrOneBooleanContent);
setBooleanVectorContents(ZeroOrOneBooleanContent); // FIXME: Is this correct?
- // Set up the register classes
- addRegisterClass(MVT::i32, &Mips::CPURegsRegClass);
-
- if (HasMips64)
- addRegisterClass(MVT::i64, &Mips::CPU64RegsRegClass);
-
- if (Subtarget->inMips16Mode()) {
- addRegisterClass(MVT::i32, &Mips::CPU16RegsRegClass);
- }
-
- if (Subtarget->hasDSP()) {
- MVT::SimpleValueType VecTys[2] = {MVT::v2i16, MVT::v4i8};
-
- for (unsigned i = 0; i < array_lengthof(VecTys); ++i) {
- addRegisterClass(VecTys[i], &Mips::DSPRegsRegClass);
-
- // Expand all builtin opcodes.
- for (unsigned Opc = 0; Opc < ISD::BUILTIN_OP_END; ++Opc)
- setOperationAction(Opc, VecTys[i], Expand);
-
- setOperationAction(ISD::LOAD, VecTys[i], Legal);
- setOperationAction(ISD::STORE, VecTys[i], Legal);
- setOperationAction(ISD::BITCAST, VecTys[i], Legal);
- }
- }
-
- if (!TM.Options.UseSoftFloat) {
- addRegisterClass(MVT::f32, &Mips::FGR32RegClass);
-
- // When dealing with single precision only, use libcalls
- if (!Subtarget->isSingleFloat()) {
- if (HasMips64)
- addRegisterClass(MVT::f64, &Mips::FGR64RegClass);
- else
- addRegisterClass(MVT::f64, &Mips::AFGR64RegClass);
- }
- }
-
// Load extented operations for i1 types must be promoted
setLoadExtAction(ISD::EXTLOAD, MVT::i1, Promote);
setLoadExtAction(ISD::ZEXTLOAD, MVT::i1, Promote);
AddPromotedToType(ISD::SETCC, MVT::i1, MVT::i32);
// Mips Custom Operations
+ setOperationAction(ISD::BR_JT, MVT::Other, Custom);
setOperationAction(ISD::GlobalAddress, MVT::i32, Custom);
setOperationAction(ISD::BlockAddress, MVT::i32, Custom);
setOperationAction(ISD::GlobalTLSAddress, MVT::i32, Custom);
setOperationAction(ISD::VASTART, MVT::Other, Custom);
setOperationAction(ISD::FCOPYSIGN, MVT::f32, Custom);
setOperationAction(ISD::FCOPYSIGN, MVT::f64, Custom);
- setOperationAction(ISD::MEMBARRIER, MVT::Other, Custom);
- setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Custom);
- if (!Subtarget->inMips16Mode()) {
- setOperationAction(ISD::LOAD, MVT::i32, Custom);
- setOperationAction(ISD::STORE, MVT::i32, Custom);
- }
if (!TM.Options.NoNaNsFPMath) {
setOperationAction(ISD::FABS, MVT::f32, Custom);
setOperationAction(ISD::SRL_PARTS, MVT::i32, Custom);
}
+ setOperationAction(ISD::ADD, MVT::i32, Custom);
+ if (HasMips64)
+ setOperationAction(ISD::ADD, MVT::i64, Custom);
+
setOperationAction(ISD::SDIV, MVT::i32, Expand);
setOperationAction(ISD::SREM, MVT::i32, Expand);
setOperationAction(ISD::UDIV, MVT::i32, Expand);
setOperationAction(ISD::UREM, MVT::i64, Expand);
// Operations not directly supported by Mips.
- setOperationAction(ISD::BR_JT, MVT::Other, Expand);
- setOperationAction(ISD::BR_CC, MVT::Other, Expand);
+ setOperationAction(ISD::BR_CC, MVT::f32, Expand);
+ setOperationAction(ISD::BR_CC, MVT::f64, Expand);
+ setOperationAction(ISD::BR_CC, MVT::i32, Expand);
+ setOperationAction(ISD::BR_CC, MVT::i64, Expand);
setOperationAction(ISD::SELECT_CC, MVT::Other, Expand);
setOperationAction(ISD::UINT_TO_FP, MVT::i32, Expand);
setOperationAction(ISD::UINT_TO_FP, MVT::i64, Expand);
setOperationAction(ISD::FSIN, MVT::f64, Expand);
setOperationAction(ISD::FCOS, MVT::f32, Expand);
setOperationAction(ISD::FCOS, MVT::f64, Expand);
+ setOperationAction(ISD::FSINCOS, MVT::f32, Expand);
+ setOperationAction(ISD::FSINCOS, MVT::f64, Expand);
setOperationAction(ISD::FPOWI, MVT::f32, Expand);
setOperationAction(ISD::FPOW, MVT::f32, Expand);
setOperationAction(ISD::FPOW, MVT::f64, Expand);
setOperationAction(ISD::EHSELECTION, MVT::i32, Expand);
setOperationAction(ISD::EHSELECTION, MVT::i64, Expand);
+ setOperationAction(ISD::EH_RETURN, MVT::Other, Custom);
+
setOperationAction(ISD::VAARG, MVT::Other, Expand);
setOperationAction(ISD::VACOPY, MVT::Other, Expand);
setOperationAction(ISD::VAEND, MVT::Other, Expand);
setTruncStoreAction(MVT::i64, MVT::i32, Custom);
}
- setTargetDAGCombine(ISD::ADDE);
- setTargetDAGCombine(ISD::SUBE);
setTargetDAGCombine(ISD::SDIVREM);
setTargetDAGCombine(ISD::UDIVREM);
setTargetDAGCombine(ISD::SELECT);
setMinFunctionAlignment(HasMips64 ? 3 : 2);
setStackPointerRegisterToSaveRestore(IsN64 ? Mips::SP_64 : Mips::SP);
- computeRegisterProperties();
setExceptionPointerRegister(IsN64 ? Mips::A0_64 : Mips::A0);
setExceptionSelectorRegister(IsN64 ? Mips::A1_64 : Mips::A1);
- maxStoresPerMemcpy = 16;
+ MaxStoresPerMemcpy = 16;
}
-bool MipsTargetLowering::allowsUnalignedMemoryAccesses(EVT VT) const {
- MVT::SimpleValueType SVT = VT.getSimpleVT().SimpleTy;
-
- if (Subtarget->inMips16Mode())
- return false;
+const MipsTargetLowering *MipsTargetLowering::create(MipsTargetMachine &TM) {
+ if (TM.getSubtargetImpl()->inMips16Mode())
+ return llvm::createMips16TargetLowering(TM);
- switch (SVT) {
- case MVT::i64:
- case MVT::i32:
- return true;
- default:
- return false;
- }
+ return llvm::createMipsSETargetLowering(TM);
}
EVT MipsTargetLowering::getSetCCResultType(EVT VT) const {
- return MVT::i32;
-}
-
-// SelectMadd -
-// Transforms a subgraph in CurDAG if the following pattern is found:
-// (addc multLo, Lo0), (adde multHi, Hi0),
-// where,
-// multHi/Lo: product of multiplication
-// Lo0: initial value of Lo register
-// Hi0: initial value of Hi register
-// Return true if pattern matching was successful.
-static bool SelectMadd(SDNode *ADDENode, SelectionDAG *CurDAG) {
- // ADDENode's second operand must be a flag output of an ADDC node in order
- // for the matching to be successful.
- SDNode *ADDCNode = ADDENode->getOperand(2).getNode();
-
- if (ADDCNode->getOpcode() != ISD::ADDC)
- return false;
-
- SDValue MultHi = ADDENode->getOperand(0);
- SDValue MultLo = ADDCNode->getOperand(0);
- SDNode *MultNode = MultHi.getNode();
- unsigned MultOpc = MultHi.getOpcode();
-
- // MultHi and MultLo must be generated by the same node,
- if (MultLo.getNode() != MultNode)
- return false;
-
- // and it must be a multiplication.
- if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI)
- return false;
-
- // MultLo amd MultHi must be the first and second output of MultNode
- // respectively.
- if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0)
- return false;
-
- // Transform this to a MADD only if ADDENode and ADDCNode are the only users
- // of the values of MultNode, in which case MultNode will be removed in later
- // phases.
- // If there exist users other than ADDENode or ADDCNode, this function returns
- // here, which will result in MultNode being mapped to a single MULT
- // instruction node rather than a pair of MULT and MADD instructions being
- // produced.
- if (!MultHi.hasOneUse() || !MultLo.hasOneUse())
- return false;
-
- SDValue Chain = CurDAG->getEntryNode();
- DebugLoc dl = ADDENode->getDebugLoc();
-
- // create MipsMAdd(u) node
- MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MAddu : MipsISD::MAdd;
-
- SDValue MAdd = CurDAG->getNode(MultOpc, dl, MVT::Glue,
- MultNode->getOperand(0),// Factor 0
- MultNode->getOperand(1),// Factor 1
- ADDCNode->getOperand(1),// Lo0
- ADDENode->getOperand(1));// Hi0
-
- // create CopyFromReg nodes
- SDValue CopyFromLo = CurDAG->getCopyFromReg(Chain, dl, Mips::LO, MVT::i32,
- MAdd);
- SDValue CopyFromHi = CurDAG->getCopyFromReg(CopyFromLo.getValue(1), dl,
- Mips::HI, MVT::i32,
- CopyFromLo.getValue(2));
-
- // replace uses of adde and addc here
- if (!SDValue(ADDCNode, 0).use_empty())
- CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDCNode, 0), CopyFromLo);
-
- if (!SDValue(ADDENode, 0).use_empty())
- CurDAG->ReplaceAllUsesOfValueWith(SDValue(ADDENode, 0), CopyFromHi);
-
- return true;
-}
-
-// SelectMsub -
-// Transforms a subgraph in CurDAG if the following pattern is found:
-// (addc Lo0, multLo), (sube Hi0, multHi),
-// where,
-// multHi/Lo: product of multiplication
-// Lo0: initial value of Lo register
-// Hi0: initial value of Hi register
-// Return true if pattern matching was successful.
-static bool SelectMsub(SDNode *SUBENode, SelectionDAG *CurDAG) {
- // SUBENode's second operand must be a flag output of an SUBC node in order
- // for the matching to be successful.
- SDNode *SUBCNode = SUBENode->getOperand(2).getNode();
-
- if (SUBCNode->getOpcode() != ISD::SUBC)
- return false;
-
- SDValue MultHi = SUBENode->getOperand(1);
- SDValue MultLo = SUBCNode->getOperand(1);
- SDNode *MultNode = MultHi.getNode();
- unsigned MultOpc = MultHi.getOpcode();
-
- // MultHi and MultLo must be generated by the same node,
- if (MultLo.getNode() != MultNode)
- return false;
-
- // and it must be a multiplication.
- if (MultOpc != ISD::SMUL_LOHI && MultOpc != ISD::UMUL_LOHI)
- return false;
-
- // MultLo amd MultHi must be the first and second output of MultNode
- // respectively.
- if (MultHi.getResNo() != 1 || MultLo.getResNo() != 0)
- return false;
-
- // Transform this to a MSUB only if SUBENode and SUBCNode are the only users
- // of the values of MultNode, in which case MultNode will be removed in later
- // phases.
- // If there exist users other than SUBENode or SUBCNode, this function returns
- // here, which will result in MultNode being mapped to a single MULT
- // instruction node rather than a pair of MULT and MSUB instructions being
- // produced.
- if (!MultHi.hasOneUse() || !MultLo.hasOneUse())
- return false;
-
- SDValue Chain = CurDAG->getEntryNode();
- DebugLoc dl = SUBENode->getDebugLoc();
-
- // create MipsSub(u) node
- MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MSubu : MipsISD::MSub;
-
- SDValue MSub = CurDAG->getNode(MultOpc, dl, MVT::Glue,
- MultNode->getOperand(0),// Factor 0
- MultNode->getOperand(1),// Factor 1
- SUBCNode->getOperand(0),// Lo0
- SUBENode->getOperand(0));// Hi0
-
- // create CopyFromReg nodes
- SDValue CopyFromLo = CurDAG->getCopyFromReg(Chain, dl, Mips::LO, MVT::i32,
- MSub);
- SDValue CopyFromHi = CurDAG->getCopyFromReg(CopyFromLo.getValue(1), dl,
- Mips::HI, MVT::i32,
- CopyFromLo.getValue(2));
-
- // replace uses of sube and subc here
- if (!SDValue(SUBCNode, 0).use_empty())
- CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBCNode, 0), CopyFromLo);
-
- if (!SDValue(SUBENode, 0).use_empty())
- CurDAG->ReplaceAllUsesOfValueWith(SDValue(SUBENode, 0), CopyFromHi);
-
- return true;
-}
-
-static SDValue PerformADDECombine(SDNode *N, SelectionDAG &DAG,
- TargetLowering::DAGCombinerInfo &DCI,
- const MipsSubtarget *Subtarget) {
- if (DCI.isBeforeLegalize())
- return SDValue();
-
- if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 &&
- SelectMadd(N, &DAG))
- return SDValue(N, 0);
-
- return SDValue();
-}
-
-static SDValue PerformSUBECombine(SDNode *N, SelectionDAG &DAG,
- TargetLowering::DAGCombinerInfo &DCI,
- const MipsSubtarget *Subtarget) {
- if (DCI.isBeforeLegalize())
- return SDValue();
-
- if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 &&
- SelectMsub(N, &DAG))
- return SDValue(N, 0);
-
- return SDValue();
+ if (!VT.isVector())
+ return MVT::i32;
+ return VT.changeVectorElementTypeToInteger();
}
-static SDValue PerformDivRemCombine(SDNode *N, SelectionDAG &DAG,
+static SDValue performDivRemCombine(SDNode *N, SelectionDAG &DAG,
TargetLowering::DAGCombinerInfo &DCI,
const MipsSubtarget *Subtarget) {
if (DCI.isBeforeLegalizeOps())
EVT Ty = N->getValueType(0);
unsigned LO = (Ty == MVT::i32) ? Mips::LO : Mips::LO64;
unsigned HI = (Ty == MVT::i32) ? Mips::HI : Mips::HI64;
- unsigned opc = N->getOpcode() == ISD::SDIVREM ? MipsISD::DivRem :
- MipsISD::DivRemU;
- DebugLoc dl = N->getDebugLoc();
+ unsigned Opc = N->getOpcode() == ISD::SDIVREM ? MipsISD::DivRem16 :
+ MipsISD::DivRemU16;
+ DebugLoc DL = N->getDebugLoc();
- SDValue DivRem = DAG.getNode(opc, dl, MVT::Glue,
+ SDValue DivRem = DAG.getNode(Opc, DL, MVT::Glue,
N->getOperand(0), N->getOperand(1));
SDValue InChain = DAG.getEntryNode();
SDValue InGlue = DivRem;
// insert MFLO
if (N->hasAnyUseOfValue(0)) {
- SDValue CopyFromLo = DAG.getCopyFromReg(InChain, dl, LO, Ty,
+ SDValue CopyFromLo = DAG.getCopyFromReg(InChain, DL, LO, Ty,
InGlue);
DAG.ReplaceAllUsesOfValueWith(SDValue(N, 0), CopyFromLo);
InChain = CopyFromLo.getValue(1);
// insert MFHI
if (N->hasAnyUseOfValue(1)) {
- SDValue CopyFromHi = DAG.getCopyFromReg(InChain, dl,
+ SDValue CopyFromHi = DAG.getCopyFromReg(InChain, DL,
HI, Ty, InGlue);
DAG.ReplaceAllUsesOfValueWith(SDValue(N, 1), CopyFromHi);
}
}
-// Returns true if condition code has to be inverted.
-static bool InvertFPCondCode(Mips::CondCode CC) {
+/// This function returns true if the floating point conditional branches and
+/// conditional moves which use condition code CC should be inverted.
+static bool invertFPCondCodeUser(Mips::CondCode CC) {
if (CC >= Mips::FCOND_F && CC <= Mips::FCOND_NGT)
return false;
// Creates and returns an FPCmp node from a setcc node.
// Returns Op if setcc is not a floating point comparison.
-static SDValue CreateFPCmp(SelectionDAG &DAG, const SDValue &Op) {
+static SDValue createFPCmp(SelectionDAG &DAG, const SDValue &Op) {
// must be a SETCC node
if (Op.getOpcode() != ISD::SETCC)
return Op;
return Op;
SDValue RHS = Op.getOperand(1);
- DebugLoc dl = Op.getDebugLoc();
+ DebugLoc DL = Op.getDebugLoc();
// Assume the 3rd operand is a CondCodeSDNode. Add code to check the type of
// node if necessary.
ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(2))->get();
- return DAG.getNode(MipsISD::FPCmp, dl, MVT::Glue, LHS, RHS,
+ return DAG.getNode(MipsISD::FPCmp, DL, MVT::Glue, LHS, RHS,
DAG.getConstant(FPCondCCodeToFCC(CC), MVT::i32));
}
// Creates and returns a CMovFPT/F node.
-static SDValue CreateCMovFP(SelectionDAG &DAG, SDValue Cond, SDValue True,
+static SDValue createCMovFP(SelectionDAG &DAG, SDValue Cond, SDValue True,
SDValue False, DebugLoc DL) {
- bool invert = InvertFPCondCode((Mips::CondCode)
- cast<ConstantSDNode>(Cond.getOperand(2))
- ->getSExtValue());
+ ConstantSDNode *CC = cast<ConstantSDNode>(Cond.getOperand(2));
+ bool invert = invertFPCondCodeUser((Mips::CondCode)CC->getSExtValue());
return DAG.getNode((invert ? MipsISD::CMovFP_F : MipsISD::CMovFP_T), DL,
True.getValueType(), True, False, Cond);
}
-static SDValue PerformSELECTCombine(SDNode *N, SelectionDAG &DAG,
+static SDValue performSELECTCombine(SDNode *N, SelectionDAG &DAG,
TargetLowering::DAGCombinerInfo &DCI,
const MipsSubtarget *Subtarget) {
if (DCI.isBeforeLegalizeOps())
return DAG.getNode(ISD::SELECT, DL, FalseTy, SetCC, False, True);
}
-static SDValue PerformANDCombine(SDNode *N, SelectionDAG &DAG,
+static SDValue performANDCombine(SDNode *N, SelectionDAG &DAG,
TargetLowering::DAGCombinerInfo &DCI,
const MipsSubtarget *Subtarget) {
// Pattern match EXT.
// Op's second operand must be a shifted mask.
if (!(CN = dyn_cast<ConstantSDNode>(Mask)) ||
- !IsShiftedMask(CN->getZExtValue(), SMPos, SMSize))
+ !isShiftedMask(CN->getZExtValue(), SMPos, SMSize))
return SDValue();
// Return if the shifted mask does not start at bit 0 or the sum of its size
DAG.getConstant(SMSize, MVT::i32));
}
-static SDValue PerformORCombine(SDNode *N, SelectionDAG &DAG,
+static SDValue performORCombine(SDNode *N, SelectionDAG &DAG,
TargetLowering::DAGCombinerInfo &DCI,
const MipsSubtarget *Subtarget) {
// Pattern match INS.
return SDValue();
if (!(CN = dyn_cast<ConstantSDNode>(And0.getOperand(1))) ||
- !IsShiftedMask(~CN->getSExtValue(), SMPos0, SMSize0))
+ !isShiftedMask(~CN->getSExtValue(), SMPos0, SMSize0))
return SDValue();
// See if Op's second operand matches (and (shl $src, pos), mask1).
return SDValue();
if (!(CN = dyn_cast<ConstantSDNode>(And1.getOperand(1))) ||
- !IsShiftedMask(CN->getZExtValue(), SMPos1, SMSize1))
+ !isShiftedMask(CN->getZExtValue(), SMPos1, SMSize1))
return SDValue();
// The shift masks must have the same position and size.
DAG.getConstant(SMSize0, MVT::i32), And0.getOperand(0));
}
-static SDValue PerformADDCombine(SDNode *N, SelectionDAG &DAG,
+static SDValue performADDCombine(SDNode *N, SelectionDAG &DAG,
TargetLowering::DAGCombinerInfo &DCI,
const MipsSubtarget *Subtarget) {
// (add v0, (add v1, abs_lo(tjt))) => (add (add v0, v1), abs_lo(tjt))
SDValue MipsTargetLowering::PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI)
const {
SelectionDAG &DAG = DCI.DAG;
- unsigned opc = N->getOpcode();
+ unsigned Opc = N->getOpcode();
- switch (opc) {
+ switch (Opc) {
default: break;
- case ISD::ADDE:
- return PerformADDECombine(N, DAG, DCI, Subtarget);
- case ISD::SUBE:
- return PerformSUBECombine(N, DAG, DCI, Subtarget);
case ISD::SDIVREM:
case ISD::UDIVREM:
- return PerformDivRemCombine(N, DAG, DCI, Subtarget);
+ return performDivRemCombine(N, DAG, DCI, Subtarget);
case ISD::SELECT:
- return PerformSELECTCombine(N, DAG, DCI, Subtarget);
+ return performSELECTCombine(N, DAG, DCI, Subtarget);
case ISD::AND:
- return PerformANDCombine(N, DAG, DCI, Subtarget);
+ return performANDCombine(N, DAG, DCI, Subtarget);
case ISD::OR:
- return PerformORCombine(N, DAG, DCI, Subtarget);
+ return performORCombine(N, DAG, DCI, Subtarget);
case ISD::ADD:
- return PerformADDCombine(N, DAG, DCI, Subtarget);
+ return performADDCombine(N, DAG, DCI, Subtarget);
}
return SDValue();
{
switch (Op.getOpcode())
{
- case ISD::BRCOND: return LowerBRCOND(Op, DAG);
- case ISD::ConstantPool: return LowerConstantPool(Op, DAG);
- case ISD::GlobalAddress: return LowerGlobalAddress(Op, DAG);
- case ISD::BlockAddress: return LowerBlockAddress(Op, DAG);
- case ISD::GlobalTLSAddress: return LowerGlobalTLSAddress(Op, DAG);
- case ISD::JumpTable: return LowerJumpTable(Op, DAG);
- case ISD::SELECT: return LowerSELECT(Op, DAG);
- case ISD::SELECT_CC: return LowerSELECT_CC(Op, DAG);
- case ISD::SETCC: return LowerSETCC(Op, DAG);
- case ISD::VASTART: return LowerVASTART(Op, DAG);
- case ISD::FCOPYSIGN: return LowerFCOPYSIGN(Op, DAG);
- case ISD::FABS: return LowerFABS(Op, DAG);
- case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG);
- case ISD::RETURNADDR: return LowerRETURNADDR(Op, DAG);
- case ISD::MEMBARRIER: return LowerMEMBARRIER(Op, DAG);
- case ISD::ATOMIC_FENCE: return LowerATOMIC_FENCE(Op, DAG);
- case ISD::SHL_PARTS: return LowerShiftLeftParts(Op, DAG);
- case ISD::SRA_PARTS: return LowerShiftRightParts(Op, DAG, true);
- case ISD::SRL_PARTS: return LowerShiftRightParts(Op, DAG, false);
- case ISD::LOAD: return LowerLOAD(Op, DAG);
- case ISD::STORE: return LowerSTORE(Op, DAG);
- case ISD::INTRINSIC_WO_CHAIN: return LowerINTRINSIC_WO_CHAIN(Op, DAG);
- case ISD::INTRINSIC_W_CHAIN: return LowerINTRINSIC_W_CHAIN(Op, DAG);
+ case ISD::BR_JT: return lowerBR_JT(Op, DAG);
+ case ISD::BRCOND: return lowerBRCOND(Op, DAG);
+ case ISD::ConstantPool: return lowerConstantPool(Op, DAG);
+ case ISD::GlobalAddress: return lowerGlobalAddress(Op, DAG);
+ case ISD::BlockAddress: return lowerBlockAddress(Op, DAG);
+ case ISD::GlobalTLSAddress: return lowerGlobalTLSAddress(Op, DAG);
+ case ISD::JumpTable: return lowerJumpTable(Op, DAG);
+ case ISD::SELECT: return lowerSELECT(Op, DAG);
+ case ISD::SELECT_CC: return lowerSELECT_CC(Op, DAG);
+ case ISD::SETCC: return lowerSETCC(Op, DAG);
+ case ISD::VASTART: return lowerVASTART(Op, DAG);
+ case ISD::FCOPYSIGN: return lowerFCOPYSIGN(Op, DAG);
+ case ISD::FABS: return lowerFABS(Op, DAG);
+ case ISD::FRAMEADDR: return lowerFRAMEADDR(Op, DAG);
+ case ISD::RETURNADDR: return lowerRETURNADDR(Op, DAG);
+ case ISD::EH_RETURN: return lowerEH_RETURN(Op, DAG);
+ case ISD::MEMBARRIER: return lowerMEMBARRIER(Op, DAG);
+ case ISD::ATOMIC_FENCE: return lowerATOMIC_FENCE(Op, DAG);
+ case ISD::SHL_PARTS: return lowerShiftLeftParts(Op, DAG);
+ case ISD::SRA_PARTS: return lowerShiftRightParts(Op, DAG, true);
+ case ISD::SRL_PARTS: return lowerShiftRightParts(Op, DAG, false);
+ case ISD::LOAD: return lowerLOAD(Op, DAG);
+ case ISD::STORE: return lowerSTORE(Op, DAG);
+ case ISD::INTRINSIC_WO_CHAIN: return lowerINTRINSIC_WO_CHAIN(Op, DAG);
+ case ISD::INTRINSIC_W_CHAIN: return lowerINTRINSIC_W_CHAIN(Op, DAG);
+ case ISD::ADD: return lowerADD(Op, DAG);
}
return SDValue();
}
// Lower helper functions
//===----------------------------------------------------------------------===//
-// AddLiveIn - This helper function adds the specified physical register to the
+// addLiveIn - This helper function adds the specified physical register to the
// MachineFunction as a live in value. It also creates a corresponding
// virtual register for it.
static unsigned
-AddLiveIn(MachineFunction &MF, unsigned PReg, const TargetRegisterClass *RC)
+addLiveIn(MachineFunction &MF, unsigned PReg, const TargetRegisterClass *RC)
{
- assert(RC->contains(PReg) && "Not the correct regclass!");
unsigned VReg = MF.getRegInfo().createVirtualRegister(RC);
MF.getRegInfo().addLiveIn(PReg, VReg);
return VReg;
}
-// Get fp branch code (not opcode) from condition code.
-static Mips::FPBranchCode GetFPBranchCodeFromCond(Mips::CondCode CC) {
- if (CC >= Mips::FCOND_F && CC <= Mips::FCOND_NGT)
- return Mips::BRANCH_T;
-
- assert((CC >= Mips::FCOND_T && CC <= Mips::FCOND_GT) &&
- "Invalid CondCode.");
-
- return Mips::BRANCH_F;
-}
-
-/*
-static MachineBasicBlock* ExpandCondMov(MachineInstr *MI, MachineBasicBlock *BB,
- DebugLoc dl,
- const MipsSubtarget *Subtarget,
- const TargetInstrInfo *TII,
- bool isFPCmp, unsigned Opc) {
- // There is no need to expand CMov instructions if target has
- // conditional moves.
- if (Subtarget->hasCondMov())
- return BB;
-
- // To "insert" a SELECT_CC instruction, we actually have to insert the
- // diamond control-flow pattern. The incoming instruction knows the
- // destination vreg to set, the condition code register to branch on, the
- // true/false values to select between, and a branch opcode to use.
- const BasicBlock *LLVM_BB = BB->getBasicBlock();
- MachineFunction::iterator It = BB;
- ++It;
-
- // thisMBB:
- // ...
- // TrueVal = ...
- // setcc r1, r2, r3
- // bNE r1, r0, copy1MBB
- // fallthrough --> copy0MBB
- MachineBasicBlock *thisMBB = BB;
- MachineFunction *F = BB->getParent();
- MachineBasicBlock *copy0MBB = F->CreateMachineBasicBlock(LLVM_BB);
- MachineBasicBlock *sinkMBB = F->CreateMachineBasicBlock(LLVM_BB);
- F->insert(It, copy0MBB);
- F->insert(It, sinkMBB);
-
- // Transfer the remainder of BB and its successor edges to sinkMBB.
- sinkMBB->splice(sinkMBB->begin(), BB,
- llvm::next(MachineBasicBlock::iterator(MI)),
- BB->end());
- sinkMBB->transferSuccessorsAndUpdatePHIs(BB);
-
- // Next, add the true and fallthrough blocks as its successors.
- BB->addSuccessor(copy0MBB);
- BB->addSuccessor(sinkMBB);
-
- // Emit the right instruction according to the type of the operands compared
- if (isFPCmp)
- BuildMI(BB, dl, TII->get(Opc)).addMBB(sinkMBB);
- else
- BuildMI(BB, dl, TII->get(Opc)).addReg(MI->getOperand(2).getReg())
- .addReg(Mips::ZERO).addMBB(sinkMBB);
-
- // copy0MBB:
- // %FalseValue = ...
- // # fallthrough to sinkMBB
- BB = copy0MBB;
-
- // Update machine-CFG edges
- BB->addSuccessor(sinkMBB);
-
- // sinkMBB:
- // %Result = phi [ %TrueValue, thisMBB ], [ %FalseValue, copy0MBB ]
- // ...
- BB = sinkMBB;
-
- if (isFPCmp)
- BuildMI(*BB, BB->begin(), dl,
- TII->get(Mips::PHI), MI->getOperand(0).getReg())
- .addReg(MI->getOperand(2).getReg()).addMBB(thisMBB)
- .addReg(MI->getOperand(1).getReg()).addMBB(copy0MBB);
- else
- BuildMI(*BB, BB->begin(), dl,
- TII->get(Mips::PHI), MI->getOperand(0).getReg())
- .addReg(MI->getOperand(3).getReg()).addMBB(thisMBB)
- .addReg(MI->getOperand(1).getReg()).addMBB(copy0MBB);
-
- MI->eraseFromParent(); // The pseudo instruction is gone now.
- return BB;
-}
-*/
-
-MachineBasicBlock *
-MipsTargetLowering::EmitBPOSGE32(MachineInstr *MI, MachineBasicBlock *BB) const{
- // $bb:
- // bposge32_pseudo $vr0
- // =>
- // $bb:
- // bposge32 $tbb
- // $fbb:
- // li $vr2, 0
- // b $sink
- // $tbb:
- // li $vr1, 1
- // $sink:
- // $vr0 = phi($vr2, $fbb, $vr1, $tbb)
-
- MachineRegisterInfo &RegInfo = BB->getParent()->getRegInfo();
- const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
- const TargetRegisterClass *RC = &Mips::CPURegsRegClass;
- DebugLoc DL = MI->getDebugLoc();
- const BasicBlock *LLVM_BB = BB->getBasicBlock();
- MachineFunction::iterator It = llvm::next(MachineFunction::iterator(BB));
- MachineFunction *F = BB->getParent();
- MachineBasicBlock *FBB = F->CreateMachineBasicBlock(LLVM_BB);
- MachineBasicBlock *TBB = F->CreateMachineBasicBlock(LLVM_BB);
- MachineBasicBlock *Sink = F->CreateMachineBasicBlock(LLVM_BB);
- F->insert(It, FBB);
- F->insert(It, TBB);
- F->insert(It, Sink);
-
- // Transfer the remainder of BB and its successor edges to Sink.
- Sink->splice(Sink->begin(), BB, llvm::next(MachineBasicBlock::iterator(MI)),
- BB->end());
- Sink->transferSuccessorsAndUpdatePHIs(BB);
-
- // Add successors.
- BB->addSuccessor(FBB);
- BB->addSuccessor(TBB);
- FBB->addSuccessor(Sink);
- TBB->addSuccessor(Sink);
-
- // Insert the real bposge32 instruction to $BB.
- BuildMI(BB, DL, TII->get(Mips::BPOSGE32)).addMBB(TBB);
-
- // Fill $FBB.
- unsigned VR2 = RegInfo.createVirtualRegister(RC);
- BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::ADDiu), VR2)
- .addReg(Mips::ZERO).addImm(0);
- BuildMI(*FBB, FBB->end(), DL, TII->get(Mips::B)).addMBB(Sink);
-
- // Fill $TBB.
- unsigned VR1 = RegInfo.createVirtualRegister(RC);
- BuildMI(*TBB, TBB->end(), DL, TII->get(Mips::ADDiu), VR1)
- .addReg(Mips::ZERO).addImm(1);
-
- // Insert phi function to $Sink.
- BuildMI(*Sink, Sink->begin(), DL, TII->get(Mips::PHI),
- MI->getOperand(0).getReg())
- .addReg(VR2).addMBB(FBB).addReg(VR1).addMBB(TBB);
-
- MI->eraseFromParent(); // The pseudo instruction is gone now.
- return Sink;
-}
-
MachineBasicBlock *
MipsTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
MachineBasicBlock *BB) const {
switch (MI->getOpcode()) {
- default: llvm_unreachable("Unexpected instr type to insert");
+ default:
+ llvm_unreachable("Unexpected instr type to insert");
case Mips::ATOMIC_LOAD_ADD_I8:
case Mips::ATOMIC_LOAD_ADD_I8_P8:
- return EmitAtomicBinaryPartword(MI, BB, 1, Mips::ADDu);
+ return emitAtomicBinaryPartword(MI, BB, 1, Mips::ADDu);
case Mips::ATOMIC_LOAD_ADD_I16:
case Mips::ATOMIC_LOAD_ADD_I16_P8:
- return EmitAtomicBinaryPartword(MI, BB, 2, Mips::ADDu);
+ return emitAtomicBinaryPartword(MI, BB, 2, Mips::ADDu);
case Mips::ATOMIC_LOAD_ADD_I32:
case Mips::ATOMIC_LOAD_ADD_I32_P8:
- return EmitAtomicBinary(MI, BB, 4, Mips::ADDu);
+ return emitAtomicBinary(MI, BB, 4, Mips::ADDu);
case Mips::ATOMIC_LOAD_ADD_I64:
case Mips::ATOMIC_LOAD_ADD_I64_P8:
- return EmitAtomicBinary(MI, BB, 8, Mips::DADDu);
+ return emitAtomicBinary(MI, BB, 8, Mips::DADDu);
case Mips::ATOMIC_LOAD_AND_I8:
case Mips::ATOMIC_LOAD_AND_I8_P8:
- return EmitAtomicBinaryPartword(MI, BB, 1, Mips::AND);
+ return emitAtomicBinaryPartword(MI, BB, 1, Mips::AND);
case Mips::ATOMIC_LOAD_AND_I16:
case Mips::ATOMIC_LOAD_AND_I16_P8:
- return EmitAtomicBinaryPartword(MI, BB, 2, Mips::AND);
+ return emitAtomicBinaryPartword(MI, BB, 2, Mips::AND);
case Mips::ATOMIC_LOAD_AND_I32:
case Mips::ATOMIC_LOAD_AND_I32_P8:
- return EmitAtomicBinary(MI, BB, 4, Mips::AND);
+ return emitAtomicBinary(MI, BB, 4, Mips::AND);
case Mips::ATOMIC_LOAD_AND_I64:
case Mips::ATOMIC_LOAD_AND_I64_P8:
- return EmitAtomicBinary(MI, BB, 8, Mips::AND64);
+ return emitAtomicBinary(MI, BB, 8, Mips::AND64);
case Mips::ATOMIC_LOAD_OR_I8:
case Mips::ATOMIC_LOAD_OR_I8_P8:
- return EmitAtomicBinaryPartword(MI, BB, 1, Mips::OR);
+ return emitAtomicBinaryPartword(MI, BB, 1, Mips::OR);
case Mips::ATOMIC_LOAD_OR_I16:
case Mips::ATOMIC_LOAD_OR_I16_P8:
- return EmitAtomicBinaryPartword(MI, BB, 2, Mips::OR);
+ return emitAtomicBinaryPartword(MI, BB, 2, Mips::OR);
case Mips::ATOMIC_LOAD_OR_I32:
case Mips::ATOMIC_LOAD_OR_I32_P8:
- return EmitAtomicBinary(MI, BB, 4, Mips::OR);
+ return emitAtomicBinary(MI, BB, 4, Mips::OR);
case Mips::ATOMIC_LOAD_OR_I64:
case Mips::ATOMIC_LOAD_OR_I64_P8:
- return EmitAtomicBinary(MI, BB, 8, Mips::OR64);
+ return emitAtomicBinary(MI, BB, 8, Mips::OR64);
case Mips::ATOMIC_LOAD_XOR_I8:
case Mips::ATOMIC_LOAD_XOR_I8_P8:
- return EmitAtomicBinaryPartword(MI, BB, 1, Mips::XOR);
+ return emitAtomicBinaryPartword(MI, BB, 1, Mips::XOR);
case Mips::ATOMIC_LOAD_XOR_I16:
case Mips::ATOMIC_LOAD_XOR_I16_P8:
- return EmitAtomicBinaryPartword(MI, BB, 2, Mips::XOR);
+ return emitAtomicBinaryPartword(MI, BB, 2, Mips::XOR);
case Mips::ATOMIC_LOAD_XOR_I32:
case Mips::ATOMIC_LOAD_XOR_I32_P8:
- return EmitAtomicBinary(MI, BB, 4, Mips::XOR);
+ return emitAtomicBinary(MI, BB, 4, Mips::XOR);
case Mips::ATOMIC_LOAD_XOR_I64:
case Mips::ATOMIC_LOAD_XOR_I64_P8:
- return EmitAtomicBinary(MI, BB, 8, Mips::XOR64);
+ return emitAtomicBinary(MI, BB, 8, Mips::XOR64);
case Mips::ATOMIC_LOAD_NAND_I8:
case Mips::ATOMIC_LOAD_NAND_I8_P8:
- return EmitAtomicBinaryPartword(MI, BB, 1, 0, true);
+ return emitAtomicBinaryPartword(MI, BB, 1, 0, true);
case Mips::ATOMIC_LOAD_NAND_I16:
case Mips::ATOMIC_LOAD_NAND_I16_P8:
- return EmitAtomicBinaryPartword(MI, BB, 2, 0, true);
+ return emitAtomicBinaryPartword(MI, BB, 2, 0, true);
case Mips::ATOMIC_LOAD_NAND_I32:
case Mips::ATOMIC_LOAD_NAND_I32_P8:
- return EmitAtomicBinary(MI, BB, 4, 0, true);
+ return emitAtomicBinary(MI, BB, 4, 0, true);
case Mips::ATOMIC_LOAD_NAND_I64:
case Mips::ATOMIC_LOAD_NAND_I64_P8:
- return EmitAtomicBinary(MI, BB, 8, 0, true);
+ return emitAtomicBinary(MI, BB, 8, 0, true);
case Mips::ATOMIC_LOAD_SUB_I8:
case Mips::ATOMIC_LOAD_SUB_I8_P8:
- return EmitAtomicBinaryPartword(MI, BB, 1, Mips::SUBu);
+ return emitAtomicBinaryPartword(MI, BB, 1, Mips::SUBu);
case Mips::ATOMIC_LOAD_SUB_I16:
case Mips::ATOMIC_LOAD_SUB_I16_P8:
- return EmitAtomicBinaryPartword(MI, BB, 2, Mips::SUBu);
+ return emitAtomicBinaryPartword(MI, BB, 2, Mips::SUBu);
case Mips::ATOMIC_LOAD_SUB_I32:
case Mips::ATOMIC_LOAD_SUB_I32_P8:
- return EmitAtomicBinary(MI, BB, 4, Mips::SUBu);
+ return emitAtomicBinary(MI, BB, 4, Mips::SUBu);
case Mips::ATOMIC_LOAD_SUB_I64:
case Mips::ATOMIC_LOAD_SUB_I64_P8:
- return EmitAtomicBinary(MI, BB, 8, Mips::DSUBu);
+ return emitAtomicBinary(MI, BB, 8, Mips::DSUBu);
case Mips::ATOMIC_SWAP_I8:
case Mips::ATOMIC_SWAP_I8_P8:
- return EmitAtomicBinaryPartword(MI, BB, 1, 0);
+ return emitAtomicBinaryPartword(MI, BB, 1, 0);
case Mips::ATOMIC_SWAP_I16:
case Mips::ATOMIC_SWAP_I16_P8:
- return EmitAtomicBinaryPartword(MI, BB, 2, 0);
+ return emitAtomicBinaryPartword(MI, BB, 2, 0);
case Mips::ATOMIC_SWAP_I32:
case Mips::ATOMIC_SWAP_I32_P8:
- return EmitAtomicBinary(MI, BB, 4, 0);
+ return emitAtomicBinary(MI, BB, 4, 0);
case Mips::ATOMIC_SWAP_I64:
case Mips::ATOMIC_SWAP_I64_P8:
- return EmitAtomicBinary(MI, BB, 8, 0);
+ return emitAtomicBinary(MI, BB, 8, 0);
case Mips::ATOMIC_CMP_SWAP_I8:
case Mips::ATOMIC_CMP_SWAP_I8_P8:
- return EmitAtomicCmpSwapPartword(MI, BB, 1);
+ return emitAtomicCmpSwapPartword(MI, BB, 1);
case Mips::ATOMIC_CMP_SWAP_I16:
case Mips::ATOMIC_CMP_SWAP_I16_P8:
- return EmitAtomicCmpSwapPartword(MI, BB, 2);
+ return emitAtomicCmpSwapPartword(MI, BB, 2);
case Mips::ATOMIC_CMP_SWAP_I32:
case Mips::ATOMIC_CMP_SWAP_I32_P8:
- return EmitAtomicCmpSwap(MI, BB, 4);
+ return emitAtomicCmpSwap(MI, BB, 4);
case Mips::ATOMIC_CMP_SWAP_I64:
case Mips::ATOMIC_CMP_SWAP_I64_P8:
- return EmitAtomicCmpSwap(MI, BB, 8);
- case Mips::BPOSGE32_PSEUDO:
- return EmitBPOSGE32(MI, BB);
+ return emitAtomicCmpSwap(MI, BB, 8);
}
}
// This function also handles Mips::ATOMIC_SWAP_I32 (when BinOpcode == 0), and
// Mips::ATOMIC_LOAD_NAND_I32 (when Nand == true)
MachineBasicBlock *
-MipsTargetLowering::EmitAtomicBinary(MachineInstr *MI, MachineBasicBlock *BB,
+MipsTargetLowering::emitAtomicBinary(MachineInstr *MI, MachineBasicBlock *BB,
unsigned Size, unsigned BinOpcode,
bool Nand) const {
assert((Size == 4 || Size == 8) && "Unsupported size for EmitAtomicBinary.");
MachineRegisterInfo &RegInfo = MF->getRegInfo();
const TargetRegisterClass *RC = getRegClassFor(MVT::getIntegerVT(Size * 8));
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
- DebugLoc dl = MI->getDebugLoc();
+ DebugLoc DL = MI->getDebugLoc();
unsigned LL, SC, AND, NOR, ZERO, BEQ;
if (Size == 4) {
// sc success, storeval, 0(ptr)
// beq success, $0, loopMBB
BB = loopMBB;
- BuildMI(BB, dl, TII->get(LL), OldVal).addReg(Ptr).addImm(0);
+ BuildMI(BB, DL, TII->get(LL), OldVal).addReg(Ptr).addImm(0);
if (Nand) {
// and andres, oldval, incr
// nor storeval, $0, andres
- BuildMI(BB, dl, TII->get(AND), AndRes).addReg(OldVal).addReg(Incr);
- BuildMI(BB, dl, TII->get(NOR), StoreVal).addReg(ZERO).addReg(AndRes);
+ BuildMI(BB, DL, TII->get(AND), AndRes).addReg(OldVal).addReg(Incr);
+ BuildMI(BB, DL, TII->get(NOR), StoreVal).addReg(ZERO).addReg(AndRes);
} else if (BinOpcode) {
// <binop> storeval, oldval, incr
- BuildMI(BB, dl, TII->get(BinOpcode), StoreVal).addReg(OldVal).addReg(Incr);
+ BuildMI(BB, DL, TII->get(BinOpcode), StoreVal).addReg(OldVal).addReg(Incr);
} else {
StoreVal = Incr;
}
- BuildMI(BB, dl, TII->get(SC), Success).addReg(StoreVal).addReg(Ptr).addImm(0);
- BuildMI(BB, dl, TII->get(BEQ)).addReg(Success).addReg(ZERO).addMBB(loopMBB);
+ BuildMI(BB, DL, TII->get(SC), Success).addReg(StoreVal).addReg(Ptr).addImm(0);
+ BuildMI(BB, DL, TII->get(BEQ)).addReg(Success).addReg(ZERO).addMBB(loopMBB);
MI->eraseFromParent(); // The instruction is gone now.
}
MachineBasicBlock *
-MipsTargetLowering::EmitAtomicBinaryPartword(MachineInstr *MI,
+MipsTargetLowering::emitAtomicBinaryPartword(MachineInstr *MI,
MachineBasicBlock *BB,
unsigned Size, unsigned BinOpcode,
bool Nand) const {
MachineRegisterInfo &RegInfo = MF->getRegInfo();
const TargetRegisterClass *RC = getRegClassFor(MVT::i32);
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
- DebugLoc dl = MI->getDebugLoc();
+ DebugLoc DL = MI->getDebugLoc();
unsigned LL = IsN64 ? Mips::LL_P8 : Mips::LL;
unsigned SC = IsN64 ? Mips::SC_P8 : Mips::SC;
// sll incr2,incr,shiftamt
int64_t MaskImm = (Size == 1) ? 255 : 65535;
- BuildMI(BB, dl, TII->get(Mips::ADDiu), MaskLSB2)
+ BuildMI(BB, DL, TII->get(Mips::ADDiu), MaskLSB2)
.addReg(Mips::ZERO).addImm(-4);
- BuildMI(BB, dl, TII->get(Mips::AND), AlignedAddr)
+ BuildMI(BB, DL, TII->get(Mips::AND), AlignedAddr)
.addReg(Ptr).addReg(MaskLSB2);
- BuildMI(BB, dl, TII->get(Mips::ANDi), PtrLSB2).addReg(Ptr).addImm(3);
- BuildMI(BB, dl, TII->get(Mips::SLL), ShiftAmt).addReg(PtrLSB2).addImm(3);
- BuildMI(BB, dl, TII->get(Mips::ORi), MaskUpper)
+ BuildMI(BB, DL, TII->get(Mips::ANDi), PtrLSB2).addReg(Ptr).addImm(3);
+ BuildMI(BB, DL, TII->get(Mips::SLL), ShiftAmt).addReg(PtrLSB2).addImm(3);
+ BuildMI(BB, DL, TII->get(Mips::ORi), MaskUpper)
.addReg(Mips::ZERO).addImm(MaskImm);
- BuildMI(BB, dl, TII->get(Mips::SLLV), Mask)
+ BuildMI(BB, DL, TII->get(Mips::SLLV), Mask)
.addReg(ShiftAmt).addReg(MaskUpper);
- BuildMI(BB, dl, TII->get(Mips::NOR), Mask2).addReg(Mips::ZERO).addReg(Mask);
- BuildMI(BB, dl, TII->get(Mips::SLLV), Incr2).addReg(ShiftAmt).addReg(Incr);
+ BuildMI(BB, DL, TII->get(Mips::NOR), Mask2).addReg(Mips::ZERO).addReg(Mask);
+ BuildMI(BB, DL, TII->get(Mips::SLLV), Incr2).addReg(ShiftAmt).addReg(Incr);
// atomic.load.binop
// loopMBB:
// beq success,$0,loopMBB
BB = loopMBB;
- BuildMI(BB, dl, TII->get(LL), OldVal).addReg(AlignedAddr).addImm(0);
+ BuildMI(BB, DL, TII->get(LL), OldVal).addReg(AlignedAddr).addImm(0);
if (Nand) {
// and andres, oldval, incr2
// nor binopres, $0, andres
// and newval, binopres, mask
- BuildMI(BB, dl, TII->get(Mips::AND), AndRes).addReg(OldVal).addReg(Incr2);
- BuildMI(BB, dl, TII->get(Mips::NOR), BinOpRes)
+ BuildMI(BB, DL, TII->get(Mips::AND), AndRes).addReg(OldVal).addReg(Incr2);
+ BuildMI(BB, DL, TII->get(Mips::NOR), BinOpRes)
.addReg(Mips::ZERO).addReg(AndRes);
- BuildMI(BB, dl, TII->get(Mips::AND), NewVal).addReg(BinOpRes).addReg(Mask);
+ BuildMI(BB, DL, TII->get(Mips::AND), NewVal).addReg(BinOpRes).addReg(Mask);
} else if (BinOpcode) {
// <binop> binopres, oldval, incr2
// and newval, binopres, mask
- BuildMI(BB, dl, TII->get(BinOpcode), BinOpRes).addReg(OldVal).addReg(Incr2);
- BuildMI(BB, dl, TII->get(Mips::AND), NewVal).addReg(BinOpRes).addReg(Mask);
+ BuildMI(BB, DL, TII->get(BinOpcode), BinOpRes).addReg(OldVal).addReg(Incr2);
+ BuildMI(BB, DL, TII->get(Mips::AND), NewVal).addReg(BinOpRes).addReg(Mask);
} else {// atomic.swap
// and newval, incr2, mask
- BuildMI(BB, dl, TII->get(Mips::AND), NewVal).addReg(Incr2).addReg(Mask);
+ BuildMI(BB, DL, TII->get(Mips::AND), NewVal).addReg(Incr2).addReg(Mask);
}
- BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal0)
+ BuildMI(BB, DL, TII->get(Mips::AND), MaskedOldVal0)
.addReg(OldVal).addReg(Mask2);
- BuildMI(BB, dl, TII->get(Mips::OR), StoreVal)
+ BuildMI(BB, DL, TII->get(Mips::OR), StoreVal)
.addReg(MaskedOldVal0).addReg(NewVal);
- BuildMI(BB, dl, TII->get(SC), Success)
+ BuildMI(BB, DL, TII->get(SC), Success)
.addReg(StoreVal).addReg(AlignedAddr).addImm(0);
- BuildMI(BB, dl, TII->get(Mips::BEQ))
+ BuildMI(BB, DL, TII->get(Mips::BEQ))
.addReg(Success).addReg(Mips::ZERO).addMBB(loopMBB);
// sinkMBB:
BB = sinkMBB;
int64_t ShiftImm = (Size == 1) ? 24 : 16;
- BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal1)
+ BuildMI(BB, DL, TII->get(Mips::AND), MaskedOldVal1)
.addReg(OldVal).addReg(Mask);
- BuildMI(BB, dl, TII->get(Mips::SRLV), SrlRes)
+ BuildMI(BB, DL, TII->get(Mips::SRLV), SrlRes)
.addReg(ShiftAmt).addReg(MaskedOldVal1);
- BuildMI(BB, dl, TII->get(Mips::SLL), SllRes)
+ BuildMI(BB, DL, TII->get(Mips::SLL), SllRes)
.addReg(SrlRes).addImm(ShiftImm);
- BuildMI(BB, dl, TII->get(Mips::SRA), Dest)
+ BuildMI(BB, DL, TII->get(Mips::SRA), Dest)
.addReg(SllRes).addImm(ShiftImm);
MI->eraseFromParent(); // The instruction is gone now.
}
MachineBasicBlock *
-MipsTargetLowering::EmitAtomicCmpSwap(MachineInstr *MI,
+MipsTargetLowering::emitAtomicCmpSwap(MachineInstr *MI,
MachineBasicBlock *BB,
unsigned Size) const {
assert((Size == 4 || Size == 8) && "Unsupported size for EmitAtomicCmpSwap.");
MachineRegisterInfo &RegInfo = MF->getRegInfo();
const TargetRegisterClass *RC = getRegClassFor(MVT::getIntegerVT(Size * 8));
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
- DebugLoc dl = MI->getDebugLoc();
+ DebugLoc DL = MI->getDebugLoc();
unsigned LL, SC, ZERO, BNE, BEQ;
if (Size == 4) {
// ll dest, 0(ptr)
// bne dest, oldval, exitMBB
BB = loop1MBB;
- BuildMI(BB, dl, TII->get(LL), Dest).addReg(Ptr).addImm(0);
- BuildMI(BB, dl, TII->get(BNE))
+ BuildMI(BB, DL, TII->get(LL), Dest).addReg(Ptr).addImm(0);
+ BuildMI(BB, DL, TII->get(BNE))
.addReg(Dest).addReg(OldVal).addMBB(exitMBB);
// loop2MBB:
// sc success, newval, 0(ptr)
// beq success, $0, loop1MBB
BB = loop2MBB;
- BuildMI(BB, dl, TII->get(SC), Success)
+ BuildMI(BB, DL, TII->get(SC), Success)
.addReg(NewVal).addReg(Ptr).addImm(0);
- BuildMI(BB, dl, TII->get(BEQ))
+ BuildMI(BB, DL, TII->get(BEQ))
.addReg(Success).addReg(ZERO).addMBB(loop1MBB);
MI->eraseFromParent(); // The instruction is gone now.
}
MachineBasicBlock *
-MipsTargetLowering::EmitAtomicCmpSwapPartword(MachineInstr *MI,
+MipsTargetLowering::emitAtomicCmpSwapPartword(MachineInstr *MI,
MachineBasicBlock *BB,
unsigned Size) const {
assert((Size == 1 || Size == 2) &&
MachineRegisterInfo &RegInfo = MF->getRegInfo();
const TargetRegisterClass *RC = getRegClassFor(MVT::i32);
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
- DebugLoc dl = MI->getDebugLoc();
+ DebugLoc DL = MI->getDebugLoc();
unsigned LL = IsN64 ? Mips::LL_P8 : Mips::LL;
unsigned SC = IsN64 ? Mips::SC_P8 : Mips::SC;
// andi maskednewval,newval,255
// sll shiftednewval,maskednewval,shiftamt
int64_t MaskImm = (Size == 1) ? 255 : 65535;
- BuildMI(BB, dl, TII->get(Mips::ADDiu), MaskLSB2)
+ BuildMI(BB, DL, TII->get(Mips::ADDiu), MaskLSB2)
.addReg(Mips::ZERO).addImm(-4);
- BuildMI(BB, dl, TII->get(Mips::AND), AlignedAddr)
+ BuildMI(BB, DL, TII->get(Mips::AND), AlignedAddr)
.addReg(Ptr).addReg(MaskLSB2);
- BuildMI(BB, dl, TII->get(Mips::ANDi), PtrLSB2).addReg(Ptr).addImm(3);
- BuildMI(BB, dl, TII->get(Mips::SLL), ShiftAmt).addReg(PtrLSB2).addImm(3);
- BuildMI(BB, dl, TII->get(Mips::ORi), MaskUpper)
+ BuildMI(BB, DL, TII->get(Mips::ANDi), PtrLSB2).addReg(Ptr).addImm(3);
+ BuildMI(BB, DL, TII->get(Mips::SLL), ShiftAmt).addReg(PtrLSB2).addImm(3);
+ BuildMI(BB, DL, TII->get(Mips::ORi), MaskUpper)
.addReg(Mips::ZERO).addImm(MaskImm);
- BuildMI(BB, dl, TII->get(Mips::SLLV), Mask)
+ BuildMI(BB, DL, TII->get(Mips::SLLV), Mask)
.addReg(ShiftAmt).addReg(MaskUpper);
- BuildMI(BB, dl, TII->get(Mips::NOR), Mask2).addReg(Mips::ZERO).addReg(Mask);
- BuildMI(BB, dl, TII->get(Mips::ANDi), MaskedCmpVal)
+ BuildMI(BB, DL, TII->get(Mips::NOR), Mask2).addReg(Mips::ZERO).addReg(Mask);
+ BuildMI(BB, DL, TII->get(Mips::ANDi), MaskedCmpVal)
.addReg(CmpVal).addImm(MaskImm);
- BuildMI(BB, dl, TII->get(Mips::SLLV), ShiftedCmpVal)
+ BuildMI(BB, DL, TII->get(Mips::SLLV), ShiftedCmpVal)
.addReg(ShiftAmt).addReg(MaskedCmpVal);
- BuildMI(BB, dl, TII->get(Mips::ANDi), MaskedNewVal)
+ BuildMI(BB, DL, TII->get(Mips::ANDi), MaskedNewVal)
.addReg(NewVal).addImm(MaskImm);
- BuildMI(BB, dl, TII->get(Mips::SLLV), ShiftedNewVal)
+ BuildMI(BB, DL, TII->get(Mips::SLLV), ShiftedNewVal)
.addReg(ShiftAmt).addReg(MaskedNewVal);
// loop1MBB:
// and maskedoldval0,oldval,mask
// bne maskedoldval0,shiftedcmpval,sinkMBB
BB = loop1MBB;
- BuildMI(BB, dl, TII->get(LL), OldVal).addReg(AlignedAddr).addImm(0);
- BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal0)
+ BuildMI(BB, DL, TII->get(LL), OldVal).addReg(AlignedAddr).addImm(0);
+ BuildMI(BB, DL, TII->get(Mips::AND), MaskedOldVal0)
.addReg(OldVal).addReg(Mask);
- BuildMI(BB, dl, TII->get(Mips::BNE))
+ BuildMI(BB, DL, TII->get(Mips::BNE))
.addReg(MaskedOldVal0).addReg(ShiftedCmpVal).addMBB(sinkMBB);
// loop2MBB:
// sc success,storeval,0(alignedaddr)
// beq success,$0,loop1MBB
BB = loop2MBB;
- BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal1)
+ BuildMI(BB, DL, TII->get(Mips::AND), MaskedOldVal1)
.addReg(OldVal).addReg(Mask2);
- BuildMI(BB, dl, TII->get(Mips::OR), StoreVal)
+ BuildMI(BB, DL, TII->get(Mips::OR), StoreVal)
.addReg(MaskedOldVal1).addReg(ShiftedNewVal);
- BuildMI(BB, dl, TII->get(SC), Success)
+ BuildMI(BB, DL, TII->get(SC), Success)
.addReg(StoreVal).addReg(AlignedAddr).addImm(0);
- BuildMI(BB, dl, TII->get(Mips::BEQ))
+ BuildMI(BB, DL, TII->get(Mips::BEQ))
.addReg(Success).addReg(Mips::ZERO).addMBB(loop1MBB);
// sinkMBB:
BB = sinkMBB;
int64_t ShiftImm = (Size == 1) ? 24 : 16;
- BuildMI(BB, dl, TII->get(Mips::SRLV), SrlRes)
+ BuildMI(BB, DL, TII->get(Mips::SRLV), SrlRes)
.addReg(ShiftAmt).addReg(MaskedOldVal0);
- BuildMI(BB, dl, TII->get(Mips::SLL), SllRes)
+ BuildMI(BB, DL, TII->get(Mips::SLL), SllRes)
.addReg(SrlRes).addImm(ShiftImm);
- BuildMI(BB, dl, TII->get(Mips::SRA), Dest)
+ BuildMI(BB, DL, TII->get(Mips::SRA), Dest)
.addReg(SllRes).addImm(ShiftImm);
MI->eraseFromParent(); // The instruction is gone now.
//===----------------------------------------------------------------------===//
// Misc Lower Operation implementation
//===----------------------------------------------------------------------===//
+SDValue MipsTargetLowering::lowerBR_JT(SDValue Op, SelectionDAG &DAG) const {
+ SDValue Chain = Op.getOperand(0);
+ SDValue Table = Op.getOperand(1);
+ SDValue Index = Op.getOperand(2);
+ DebugLoc DL = Op.getDebugLoc();
+ EVT PTy = getPointerTy();
+ unsigned EntrySize =
+ DAG.getMachineFunction().getJumpTableInfo()->getEntrySize(*getDataLayout());
+
+ Index = DAG.getNode(ISD::MUL, DL, PTy, Index,
+ DAG.getConstant(EntrySize, PTy));
+ SDValue Addr = DAG.getNode(ISD::ADD, DL, PTy, Index, Table);
+
+ EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), EntrySize * 8);
+ Addr = DAG.getExtLoad(ISD::SEXTLOAD, DL, PTy, Chain, Addr,
+ MachinePointerInfo::getJumpTable(), MemVT, false, false,
+ 0);
+ Chain = Addr.getValue(1);
+
+ if ((getTargetMachine().getRelocationModel() == Reloc::PIC_) || IsN64) {
+ // For PIC, the sequence is:
+ // BRIND(load(Jumptable + index) + RelocBase)
+ // RelocBase can be JumpTable, GOT or some sort of global base.
+ Addr = DAG.getNode(ISD::ADD, DL, PTy, Addr,
+ getPICJumpTableRelocBase(Table, DAG));
+ }
+
+ return DAG.getNode(ISD::BRIND, DL, MVT::Other, Chain, Addr);
+}
+
SDValue MipsTargetLowering::
-LowerBRCOND(SDValue Op, SelectionDAG &DAG) const
+lowerBRCOND(SDValue Op, SelectionDAG &DAG) const
{
// The first operand is the chain, the second is the condition, the third is
// the block to branch to if the condition is true.
SDValue Chain = Op.getOperand(0);
SDValue Dest = Op.getOperand(2);
- DebugLoc dl = Op.getDebugLoc();
+ DebugLoc DL = Op.getDebugLoc();
- SDValue CondRes = CreateFPCmp(DAG, Op.getOperand(1));
+ SDValue CondRes = createFPCmp(DAG, Op.getOperand(1));
// Return if flag is not set by a floating point comparison.
if (CondRes.getOpcode() != MipsISD::FPCmp)
SDValue CCNode = CondRes.getOperand(2);
Mips::CondCode CC =
(Mips::CondCode)cast<ConstantSDNode>(CCNode)->getZExtValue();
- SDValue BrCode = DAG.getConstant(GetFPBranchCodeFromCond(CC), MVT::i32);
-
- return DAG.getNode(MipsISD::FPBrcond, dl, Op.getValueType(), Chain, BrCode,
+ unsigned Opc = invertFPCondCodeUser(CC) ? Mips::BRANCH_F : Mips::BRANCH_T;
+ SDValue BrCode = DAG.getConstant(Opc, MVT::i32);
+ return DAG.getNode(MipsISD::FPBrcond, DL, Op.getValueType(), Chain, BrCode,
Dest, CondRes);
}
SDValue MipsTargetLowering::
-LowerSELECT(SDValue Op, SelectionDAG &DAG) const
+lowerSELECT(SDValue Op, SelectionDAG &DAG) const
{
- SDValue Cond = CreateFPCmp(DAG, Op.getOperand(0));
+ SDValue Cond = createFPCmp(DAG, Op.getOperand(0));
// Return if flag is not set by a floating point comparison.
if (Cond.getOpcode() != MipsISD::FPCmp)
return Op;
- return CreateCMovFP(DAG, Cond, Op.getOperand(1), Op.getOperand(2),
+ return createCMovFP(DAG, Cond, Op.getOperand(1), Op.getOperand(2),
Op.getDebugLoc());
}
SDValue MipsTargetLowering::
-LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const
+lowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const
{
DebugLoc DL = Op.getDebugLoc();
EVT Ty = Op.getOperand(0).getValueType();
Op.getOperand(3));
}
-SDValue MipsTargetLowering::LowerSETCC(SDValue Op, SelectionDAG &DAG) const {
- SDValue Cond = CreateFPCmp(DAG, Op);
+SDValue MipsTargetLowering::lowerSETCC(SDValue Op, SelectionDAG &DAG) const {
+ SDValue Cond = createFPCmp(DAG, Op);
assert(Cond.getOpcode() == MipsISD::FPCmp &&
"Floating point operand expected.");
SDValue True = DAG.getConstant(1, MVT::i32);
SDValue False = DAG.getConstant(0, MVT::i32);
- return CreateCMovFP(DAG, Cond, True, False, Op.getDebugLoc());
+ return createCMovFP(DAG, Cond, True, False, Op.getDebugLoc());
}
-SDValue MipsTargetLowering::LowerGlobalAddress(SDValue Op,
+SDValue MipsTargetLowering::lowerGlobalAddress(SDValue Op,
SelectionDAG &DAG) const {
// FIXME there isn't actually debug info here
- DebugLoc dl = Op.getDebugLoc();
+ DebugLoc DL = Op.getDebugLoc();
const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64) {
- SDVTList VTs = DAG.getVTList(MVT::i32);
-
const MipsTargetObjectFile &TLOF =
(const MipsTargetObjectFile&)getObjFileLowering();
// %gp_rel relocation
if (TLOF.IsGlobalInSmallSection(GV, getTargetMachine())) {
- SDValue GA = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0,
+ SDValue GA = DAG.getTargetGlobalAddress(GV, DL, MVT::i32, 0,
MipsII::MO_GPREL);
- SDValue GPRelNode = DAG.getNode(MipsISD::GPRel, dl, VTs, &GA, 1);
+ SDValue GPRelNode = DAG.getNode(MipsISD::GPRel, DL,
+ DAG.getVTList(MVT::i32), &GA, 1);
SDValue GPReg = DAG.getRegister(Mips::GP, MVT::i32);
- return DAG.getNode(ISD::ADD, dl, MVT::i32, GPReg, GPRelNode);
+ return DAG.getNode(ISD::ADD, DL, MVT::i32, GPReg, GPRelNode);
}
+
// %hi/%lo relocation
- SDValue GAHi = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0,
- MipsII::MO_ABS_HI);
- SDValue GALo = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0,
- MipsII::MO_ABS_LO);
- SDValue HiPart = DAG.getNode(MipsISD::Hi, dl, VTs, &GAHi, 1);
- SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, GALo);
- return DAG.getNode(ISD::ADD, dl, MVT::i32, HiPart, Lo);
+ return getAddrNonPIC(Op, DAG);
}
- EVT ValTy = Op.getValueType();
- bool HasGotOfst = (GV->hasInternalLinkage() ||
- (GV->hasLocalLinkage() && !isa<Function>(GV)));
- unsigned GotFlag = HasMips64 ?
- (HasGotOfst ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT_DISP) :
- (HasGotOfst ? MipsII::MO_GOT : MipsII::MO_GOT16);
- SDValue GA = DAG.getTargetGlobalAddress(GV, dl, ValTy, 0, GotFlag);
- GA = DAG.getNode(MipsISD::Wrapper, dl, ValTy, GetGlobalReg(DAG, ValTy), GA);
- SDValue ResNode = DAG.getLoad(ValTy, dl, DAG.getEntryNode(), GA,
- MachinePointerInfo(), false, false, false, 0);
- // On functions and global targets not internal linked only
- // a load from got/GP is necessary for PIC to work.
- if (!HasGotOfst)
- return ResNode;
- SDValue GALo = DAG.getTargetGlobalAddress(GV, dl, ValTy, 0,
- HasMips64 ? MipsII::MO_GOT_OFST :
- MipsII::MO_ABS_LO);
- SDValue Lo = DAG.getNode(MipsISD::Lo, dl, ValTy, GALo);
- return DAG.getNode(ISD::ADD, dl, ValTy, ResNode, Lo);
-}
-
-SDValue MipsTargetLowering::LowerBlockAddress(SDValue Op,
- SelectionDAG &DAG) const {
- const BlockAddress *BA = cast<BlockAddressSDNode>(Op)->getBlockAddress();
- // FIXME there isn't actually debug info here
- DebugLoc dl = Op.getDebugLoc();
+ if (GV->hasInternalLinkage() || (GV->hasLocalLinkage() && !isa<Function>(GV)))
+ return getAddrLocal(Op, DAG, HasMips64);
- if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64) {
- // %hi/%lo relocation
- SDValue BAHi =
- DAG.getTargetBlockAddress(BA, MVT::i32, 0, MipsII::MO_ABS_HI);
- SDValue BALo =
- DAG.getTargetBlockAddress(BA, MVT::i32, 0, MipsII::MO_ABS_LO);
- SDValue Hi = DAG.getNode(MipsISD::Hi, dl, MVT::i32, BAHi);
- SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, BALo);
- return DAG.getNode(ISD::ADD, dl, MVT::i32, Hi, Lo);
- }
+ if (LargeGOT)
+ return getAddrGlobalLargeGOT(Op, DAG, MipsII::MO_GOT_HI16,
+ MipsII::MO_GOT_LO16);
- EVT ValTy = Op.getValueType();
- unsigned GOTFlag = HasMips64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT;
- unsigned OFSTFlag = HasMips64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO;
- SDValue BAGOTOffset = DAG.getTargetBlockAddress(BA, ValTy, 0, GOTFlag);
- BAGOTOffset = DAG.getNode(MipsISD::Wrapper, dl, ValTy,
- GetGlobalReg(DAG, ValTy), BAGOTOffset);
- SDValue BALOOffset = DAG.getTargetBlockAddress(BA, ValTy, 0, OFSTFlag);
- SDValue Load = DAG.getLoad(ValTy, dl, DAG.getEntryNode(), BAGOTOffset,
- MachinePointerInfo(), false, false, false, 0);
- SDValue Lo = DAG.getNode(MipsISD::Lo, dl, ValTy, BALOOffset);
- return DAG.getNode(ISD::ADD, dl, ValTy, Load, Lo);
+ return getAddrGlobal(Op, DAG,
+ HasMips64 ? MipsII::MO_GOT_DISP : MipsII::MO_GOT16);
+}
+
+SDValue MipsTargetLowering::lowerBlockAddress(SDValue Op,
+ SelectionDAG &DAG) const {
+ if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64)
+ return getAddrNonPIC(Op, DAG);
+
+ return getAddrLocal(Op, DAG, HasMips64);
}
SDValue MipsTargetLowering::
-LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const
+lowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const
{
// If the relocation model is PIC, use the General Dynamic TLS Model or
// Local Dynamic TLS model, otherwise use the Initial Exec or
// Local Exec TLS Model.
GlobalAddressSDNode *GA = cast<GlobalAddressSDNode>(Op);
- DebugLoc dl = GA->getDebugLoc();
+ DebugLoc DL = GA->getDebugLoc();
const GlobalValue *GV = GA->getGlobal();
EVT PtrVT = getPointerTy();
unsigned Flag = (model == TLSModel::LocalDynamic) ? MipsII::MO_TLSLDM
: MipsII::MO_TLSGD;
- SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, Flag);
- SDValue Argument = DAG.getNode(MipsISD::Wrapper, dl, PtrVT,
- GetGlobalReg(DAG, PtrVT), TGA);
+ SDValue TGA = DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0, Flag);
+ SDValue Argument = DAG.getNode(MipsISD::Wrapper, DL, PtrVT,
+ getGlobalReg(DAG, PtrVT), TGA);
unsigned PtrSize = PtrVT.getSizeInBits();
IntegerType *PtrTy = Type::getIntNTy(*DAG.getContext(), PtrSize);
TargetLowering::CallLoweringInfo CLI(DAG.getEntryNode(), PtrTy,
false, false, false, false, 0, CallingConv::C,
- /*isTailCall=*/false, /*doesNotRet=*/false,
+ /*IsTailCall=*/false, /*doesNotRet=*/false,
/*isReturnValueUsed=*/true,
- TlsGetAddr, Args, DAG, dl);
+ TlsGetAddr, Args, DAG, DL);
std::pair<SDValue, SDValue> CallResult = LowerCallTo(CLI);
SDValue Ret = CallResult.first;
if (model != TLSModel::LocalDynamic)
return Ret;
- SDValue TGAHi = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
+ SDValue TGAHi = DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0,
MipsII::MO_DTPREL_HI);
- SDValue Hi = DAG.getNode(MipsISD::Hi, dl, PtrVT, TGAHi);
- SDValue TGALo = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
+ SDValue Hi = DAG.getNode(MipsISD::Hi, DL, PtrVT, TGAHi);
+ SDValue TGALo = DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0,
MipsII::MO_DTPREL_LO);
- SDValue Lo = DAG.getNode(MipsISD::Lo, dl, PtrVT, TGALo);
- SDValue Add = DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Ret);
- return DAG.getNode(ISD::ADD, dl, PtrVT, Add, Lo);
+ SDValue Lo = DAG.getNode(MipsISD::Lo, DL, PtrVT, TGALo);
+ SDValue Add = DAG.getNode(ISD::ADD, DL, PtrVT, Hi, Ret);
+ return DAG.getNode(ISD::ADD, DL, PtrVT, Add, Lo);
}
SDValue Offset;
if (model == TLSModel::InitialExec) {
// Initial Exec TLS Model
- SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
+ SDValue TGA = DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0,
MipsII::MO_GOTTPREL);
- TGA = DAG.getNode(MipsISD::Wrapper, dl, PtrVT, GetGlobalReg(DAG, PtrVT),
+ TGA = DAG.getNode(MipsISD::Wrapper, DL, PtrVT, getGlobalReg(DAG, PtrVT),
TGA);
- Offset = DAG.getLoad(PtrVT, dl,
+ Offset = DAG.getLoad(PtrVT, DL,
DAG.getEntryNode(), TGA, MachinePointerInfo(),
false, false, false, 0);
} else {
// Local Exec TLS Model
assert(model == TLSModel::LocalExec);
- SDValue TGAHi = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
+ SDValue TGAHi = DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0,
MipsII::MO_TPREL_HI);
- SDValue TGALo = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
+ SDValue TGALo = DAG.getTargetGlobalAddress(GV, DL, PtrVT, 0,
MipsII::MO_TPREL_LO);
- SDValue Hi = DAG.getNode(MipsISD::Hi, dl, PtrVT, TGAHi);
- SDValue Lo = DAG.getNode(MipsISD::Lo, dl, PtrVT, TGALo);
- Offset = DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Lo);
+ SDValue Hi = DAG.getNode(MipsISD::Hi, DL, PtrVT, TGAHi);
+ SDValue Lo = DAG.getNode(MipsISD::Lo, DL, PtrVT, TGALo);
+ Offset = DAG.getNode(ISD::ADD, DL, PtrVT, Hi, Lo);
}
- SDValue ThreadPointer = DAG.getNode(MipsISD::ThreadPointer, dl, PtrVT);
- return DAG.getNode(ISD::ADD, dl, PtrVT, ThreadPointer, Offset);
+ SDValue ThreadPointer = DAG.getNode(MipsISD::ThreadPointer, DL, PtrVT);
+ return DAG.getNode(ISD::ADD, DL, PtrVT, ThreadPointer, Offset);
}
SDValue MipsTargetLowering::
-LowerJumpTable(SDValue Op, SelectionDAG &DAG) const
+lowerJumpTable(SDValue Op, SelectionDAG &DAG) const
{
- SDValue HiPart, JTI, JTILo;
- // FIXME there isn't actually debug info here
- DebugLoc dl = Op.getDebugLoc();
- bool IsPIC = getTargetMachine().getRelocationModel() == Reloc::PIC_;
- EVT PtrVT = Op.getValueType();
- JumpTableSDNode *JT = cast<JumpTableSDNode>(Op);
-
- if (!IsPIC && !IsN64) {
- JTI = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, MipsII::MO_ABS_HI);
- HiPart = DAG.getNode(MipsISD::Hi, dl, PtrVT, JTI);
- JTILo = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, MipsII::MO_ABS_LO);
- } else {// Emit Load from Global Pointer
- unsigned GOTFlag = HasMips64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT;
- unsigned OfstFlag = HasMips64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO;
- JTI = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, GOTFlag);
- JTI = DAG.getNode(MipsISD::Wrapper, dl, PtrVT, GetGlobalReg(DAG, PtrVT),
- JTI);
- HiPart = DAG.getLoad(PtrVT, dl, DAG.getEntryNode(), JTI,
- MachinePointerInfo(), false, false, false, 0);
- JTILo = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, OfstFlag);
- }
+ if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64)
+ return getAddrNonPIC(Op, DAG);
- SDValue Lo = DAG.getNode(MipsISD::Lo, dl, PtrVT, JTILo);
- return DAG.getNode(ISD::ADD, dl, PtrVT, HiPart, Lo);
+ return getAddrLocal(Op, DAG, HasMips64);
}
SDValue MipsTargetLowering::
-LowerConstantPool(SDValue Op, SelectionDAG &DAG) const
+lowerConstantPool(SDValue Op, SelectionDAG &DAG) const
{
- SDValue ResNode;
- ConstantPoolSDNode *N = cast<ConstantPoolSDNode>(Op);
- const Constant *C = N->getConstVal();
- // FIXME there isn't actually debug info here
- DebugLoc dl = Op.getDebugLoc();
-
// gp_rel relocation
// FIXME: we should reference the constant pool using small data sections,
// but the asm printer currently doesn't support this feature without
// SDValue GOT = DAG.getGLOBAL_OFFSET_TABLE(MVT::i32);
// ResNode = DAG.getNode(ISD::ADD, MVT::i32, GOT, GPRelNode);
- if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64) {
- SDValue CPHi = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment(),
- N->getOffset(), MipsII::MO_ABS_HI);
- SDValue CPLo = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment(),
- N->getOffset(), MipsII::MO_ABS_LO);
- SDValue HiPart = DAG.getNode(MipsISD::Hi, dl, MVT::i32, CPHi);
- SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, CPLo);
- ResNode = DAG.getNode(ISD::ADD, dl, MVT::i32, HiPart, Lo);
- } else {
- EVT ValTy = Op.getValueType();
- unsigned GOTFlag = HasMips64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT;
- unsigned OFSTFlag = HasMips64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO;
- SDValue CP = DAG.getTargetConstantPool(C, ValTy, N->getAlignment(),
- N->getOffset(), GOTFlag);
- CP = DAG.getNode(MipsISD::Wrapper, dl, ValTy, GetGlobalReg(DAG, ValTy), CP);
- SDValue Load = DAG.getLoad(ValTy, dl, DAG.getEntryNode(), CP,
- MachinePointerInfo::getConstantPool(), false,
- false, false, 0);
- SDValue CPLo = DAG.getTargetConstantPool(C, ValTy, N->getAlignment(),
- N->getOffset(), OFSTFlag);
- SDValue Lo = DAG.getNode(MipsISD::Lo, dl, ValTy, CPLo);
- ResNode = DAG.getNode(ISD::ADD, dl, ValTy, Load, Lo);
- }
+ if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64)
+ return getAddrNonPIC(Op, DAG);
- return ResNode;
+ return getAddrLocal(Op, DAG, HasMips64);
}
-SDValue MipsTargetLowering::LowerVASTART(SDValue Op, SelectionDAG &DAG) const {
+SDValue MipsTargetLowering::lowerVASTART(SDValue Op, SelectionDAG &DAG) const {
MachineFunction &MF = DAG.getMachineFunction();
MipsFunctionInfo *FuncInfo = MF.getInfo<MipsFunctionInfo>();
- DebugLoc dl = Op.getDebugLoc();
+ DebugLoc DL = Op.getDebugLoc();
SDValue FI = DAG.getFrameIndex(FuncInfo->getVarArgsFrameIndex(),
getPointerTy());
// vastart just stores the address of the VarArgsFrameIndex slot into the
// memory location argument.
const Value *SV = cast<SrcValueSDNode>(Op.getOperand(2))->getValue();
- return DAG.getStore(Op.getOperand(0), dl, FI, Op.getOperand(1),
+ return DAG.getStore(Op.getOperand(0), DL, FI, Op.getOperand(1),
MachinePointerInfo(SV), false, false, 0);
}
-static SDValue LowerFCOPYSIGN32(SDValue Op, SelectionDAG &DAG, bool HasR2) {
+static SDValue lowerFCOPYSIGN32(SDValue Op, SelectionDAG &DAG, bool HasR2) {
EVT TyX = Op.getOperand(0).getValueType();
EVT TyY = Op.getOperand(1).getValueType();
SDValue Const1 = DAG.getConstant(1, MVT::i32);
return DAG.getNode(MipsISD::BuildPairF64, DL, MVT::f64, LowX, Res);
}
-static SDValue LowerFCOPYSIGN64(SDValue Op, SelectionDAG &DAG, bool HasR2) {
+static SDValue lowerFCOPYSIGN64(SDValue Op, SelectionDAG &DAG, bool HasR2) {
unsigned WidthX = Op.getOperand(0).getValueSizeInBits();
unsigned WidthY = Op.getOperand(1).getValueSizeInBits();
EVT TyX = MVT::getIntegerVT(WidthX), TyY = MVT::getIntegerVT(WidthY);
}
SDValue
-MipsTargetLowering::LowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const {
+MipsTargetLowering::lowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const {
if (Subtarget->hasMips64())
- return LowerFCOPYSIGN64(Op, DAG, Subtarget->hasMips32r2());
+ return lowerFCOPYSIGN64(Op, DAG, Subtarget->hasMips32r2());
- return LowerFCOPYSIGN32(Op, DAG, Subtarget->hasMips32r2());
+ return lowerFCOPYSIGN32(Op, DAG, Subtarget->hasMips32r2());
}
-static SDValue LowerFABS32(SDValue Op, SelectionDAG &DAG, bool HasR2) {
+static SDValue lowerFABS32(SDValue Op, SelectionDAG &DAG, bool HasR2) {
SDValue Res, Const1 = DAG.getConstant(1, MVT::i32);
DebugLoc DL = Op.getDebugLoc();
return DAG.getNode(MipsISD::BuildPairF64, DL, MVT::f64, LowX, Res);
}
-static SDValue LowerFABS64(SDValue Op, SelectionDAG &DAG, bool HasR2) {
+static SDValue lowerFABS64(SDValue Op, SelectionDAG &DAG, bool HasR2) {
SDValue Res, Const1 = DAG.getConstant(1, MVT::i32);
DebugLoc DL = Op.getDebugLoc();
}
SDValue
-MipsTargetLowering::LowerFABS(SDValue Op, SelectionDAG &DAG) const {
+MipsTargetLowering::lowerFABS(SDValue Op, SelectionDAG &DAG) const {
if (Subtarget->hasMips64() && (Op.getValueType() == MVT::f64))
- return LowerFABS64(Op, DAG, Subtarget->hasMips32r2());
+ return lowerFABS64(Op, DAG, Subtarget->hasMips32r2());
- return LowerFABS32(Op, DAG, Subtarget->hasMips32r2());
+ return lowerFABS32(Op, DAG, Subtarget->hasMips32r2());
}
SDValue MipsTargetLowering::
-LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const {
+lowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const {
// check the depth
assert((cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue() == 0) &&
"Frame address can only be determined for current frame.");
MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
MFI->setFrameAddressIsTaken(true);
EVT VT = Op.getValueType();
- DebugLoc dl = Op.getDebugLoc();
- SDValue FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl,
+ DebugLoc DL = Op.getDebugLoc();
+ SDValue FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), DL,
IsN64 ? Mips::FP_64 : Mips::FP, VT);
return FrameAddr;
}
-SDValue MipsTargetLowering::LowerRETURNADDR(SDValue Op,
+SDValue MipsTargetLowering::lowerRETURNADDR(SDValue Op,
SelectionDAG &DAG) const {
// check the depth
assert((cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue() == 0) &&
MachineFunction &MF = DAG.getMachineFunction();
MachineFrameInfo *MFI = MF.getFrameInfo();
- EVT VT = Op.getValueType();
+ MVT VT = Op.getSimpleValueType();
unsigned RA = IsN64 ? Mips::RA_64 : Mips::RA;
MFI->setReturnAddressIsTaken(true);
return DAG.getCopyFromReg(DAG.getEntryNode(), Op.getDebugLoc(), Reg, VT);
}
+// An EH_RETURN is the result of lowering llvm.eh.return which in turn is
+// generated from __builtin_eh_return (offset, handler)
+// The effect of this is to adjust the stack pointer by "offset"
+// and then branch to "handler".
+SDValue MipsTargetLowering::lowerEH_RETURN(SDValue Op, SelectionDAG &DAG)
+ const {
+ MachineFunction &MF = DAG.getMachineFunction();
+ MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>();
+
+ MipsFI->setCallsEhReturn();
+ SDValue Chain = Op.getOperand(0);
+ SDValue Offset = Op.getOperand(1);
+ SDValue Handler = Op.getOperand(2);
+ DebugLoc DL = Op.getDebugLoc();
+ EVT Ty = IsN64 ? MVT::i64 : MVT::i32;
+
+ // Store stack offset in V1, store jump target in V0. Glue CopyToReg and
+ // EH_RETURN nodes, so that instructions are emitted back-to-back.
+ unsigned OffsetReg = IsN64 ? Mips::V1_64 : Mips::V1;
+ unsigned AddrReg = IsN64 ? Mips::V0_64 : Mips::V0;
+ Chain = DAG.getCopyToReg(Chain, DL, OffsetReg, Offset, SDValue());
+ Chain = DAG.getCopyToReg(Chain, DL, AddrReg, Handler, Chain.getValue(1));
+ return DAG.getNode(MipsISD::EH_RETURN, DL, MVT::Other, Chain,
+ DAG.getRegister(OffsetReg, Ty),
+ DAG.getRegister(AddrReg, getPointerTy()),
+ Chain.getValue(1));
+}
+
// TODO: set SType according to the desired memory barrier behavior.
SDValue
-MipsTargetLowering::LowerMEMBARRIER(SDValue Op, SelectionDAG &DAG) const {
+MipsTargetLowering::lowerMEMBARRIER(SDValue Op, SelectionDAG &DAG) const {
unsigned SType = 0;
- DebugLoc dl = Op.getDebugLoc();
- return DAG.getNode(MipsISD::Sync, dl, MVT::Other, Op.getOperand(0),
+ DebugLoc DL = Op.getDebugLoc();
+ return DAG.getNode(MipsISD::Sync, DL, MVT::Other, Op.getOperand(0),
DAG.getConstant(SType, MVT::i32));
}
-SDValue MipsTargetLowering::LowerATOMIC_FENCE(SDValue Op,
+SDValue MipsTargetLowering::lowerATOMIC_FENCE(SDValue Op,
SelectionDAG &DAG) const {
// FIXME: Need pseudo-fence for 'singlethread' fences
// FIXME: Set SType for weaker fences where supported/appropriate.
unsigned SType = 0;
- DebugLoc dl = Op.getDebugLoc();
- return DAG.getNode(MipsISD::Sync, dl, MVT::Other, Op.getOperand(0),
+ DebugLoc DL = Op.getDebugLoc();
+ return DAG.getNode(MipsISD::Sync, DL, MVT::Other, Op.getOperand(0),
DAG.getConstant(SType, MVT::i32));
}
-SDValue MipsTargetLowering::LowerShiftLeftParts(SDValue Op,
+SDValue MipsTargetLowering::lowerShiftLeftParts(SDValue Op,
SelectionDAG &DAG) const {
DebugLoc DL = Op.getDebugLoc();
SDValue Lo = Op.getOperand(0), Hi = Op.getOperand(1);
return DAG.getMergeValues(Ops, 2, DL);
}
-SDValue MipsTargetLowering::LowerShiftRightParts(SDValue Op, SelectionDAG &DAG,
+SDValue MipsTargetLowering::lowerShiftRightParts(SDValue Op, SelectionDAG &DAG,
bool IsSRA) const {
DebugLoc DL = Op.getDebugLoc();
SDValue Lo = Op.getOperand(0), Hi = Op.getOperand(1);
}
// Expand an unaligned 32 or 64-bit integer load node.
-SDValue MipsTargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const {
+SDValue MipsTargetLowering::lowerLOAD(SDValue Op, SelectionDAG &DAG) const {
LoadSDNode *LD = cast<LoadSDNode>(Op);
EVT MemVT = LD->getMemoryVT();
}
// Expand an unaligned 32 or 64-bit integer store node.
-SDValue MipsTargetLowering::LowerSTORE(SDValue Op, SelectionDAG &DAG) const {
+SDValue MipsTargetLowering::lowerSTORE(SDValue Op, SelectionDAG &DAG) const {
StoreSDNode *SD = cast<StoreSDNode>(Op);
EVT MemVT = SD->getMemoryVT();
return CreateStoreLR(MipsISD::SDR, DAG, SD, SDL, IsLittle ? 0 : 7);
}
+static SDValue initAccumulator(SDValue In, DebugLoc DL, SelectionDAG &DAG) {
+ SDValue InLo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32, In,
+ 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);
+}
+
+static SDValue extractLOHI(SDValue Op, DebugLoc DL, SelectionDAG &DAG) {
+ SDValue Lo = DAG.getNode(MipsISD::ExtractLOHI, DL, MVT::i32, Op,
+ DAG.getConstant(Mips::sub_lo, MVT::i32));
+ SDValue Hi = DAG.getNode(MipsISD::ExtractLOHI, DL, MVT::i32, Op,
+ DAG.getConstant(Mips::sub_hi, MVT::i32));
+ return DAG.getNode(ISD::BUILD_PAIR, DL, MVT::i64, Lo, Hi);
+}
+
// This function expands mips intrinsic nodes which have 64-bit input operands
// or output values.
//
// v1 = copy hi
// out64 = merge-values (v0, v1)
//
-static SDValue LowerDSPIntr(SDValue Op, SelectionDAG &DAG,
- unsigned Opc, bool HasI64In, bool HasI64Out) {
+static SDValue lowerDSPIntr(SDValue Op, SelectionDAG &DAG, unsigned Opc) {
DebugLoc DL = Op.getDebugLoc();
bool HasChainIn = Op->getOperand(0).getValueType() == MVT::Other;
- SDValue Chain = HasChainIn ? Op->getOperand(0) : DAG.getEntryNode();
SmallVector<SDValue, 3> Ops;
+ unsigned OpNo = 0;
- if (HasI64In) {
- SDValue InLo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32,
- Op->getOperand(1 + HasChainIn),
- DAG.getConstant(0, MVT::i32));
- SDValue InHi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, MVT::i32,
- Op->getOperand(1 + HasChainIn),
- DAG.getConstant(1, MVT::i32));
+ // See if Op has a chain input.
+ if (HasChainIn)
+ Ops.push_back(Op->getOperand(OpNo++));
- Chain = DAG.getCopyToReg(Chain, DL, Mips::LO, InLo, SDValue());
- Chain = DAG.getCopyToReg(Chain, DL, Mips::HI, InHi, Chain.getValue(1));
+ // The next operand is the intrinsic opcode.
+ assert(Op->getOperand(OpNo).getOpcode() == ISD::TargetConstant);
- Ops.push_back(Chain);
- Ops.append(Op->op_begin() + HasChainIn + 2, Op->op_end());
- Ops.push_back(Chain.getValue(1));
- } else {
- Ops.push_back(Chain);
- Ops.append(Op->op_begin() + HasChainIn + 1, Op->op_end());
- }
+ // See if the next operand has type i64.
+ SDValue Opnd = Op->getOperand(++OpNo), In64;
+
+ if (Opnd.getValueType() == MVT::i64)
+ In64 = initAccumulator(Opnd, DL, DAG);
+ else
+ Ops.push_back(Opnd);
+
+ // Push the remaining operands.
+ for (++OpNo ; OpNo < Op->getNumOperands(); ++OpNo)
+ Ops.push_back(Op->getOperand(OpNo));
+
+ // Add In64 to the end of the list.
+ if (In64.getNode())
+ Ops.push_back(In64);
- if (!HasI64Out)
- return DAG.getNode(Opc, DL, Op->value_begin(), Op->getNumValues(),
- Ops.begin(), Ops.size());
+ // Scan output.
+ SmallVector<EVT, 2> ResTys;
- SDValue Intr = DAG.getNode(Opc, DL, DAG.getVTList(MVT::Other, MVT::Glue),
- Ops.begin(), Ops.size());
- SDValue OutLo = DAG.getCopyFromReg(Intr.getValue(0), DL, Mips::LO, MVT::i32,
- Intr.getValue(1));
- SDValue OutHi = DAG.getCopyFromReg(OutLo.getValue(1), DL, Mips::HI, MVT::i32,
- OutLo.getValue(2));
- SDValue Out = DAG.getNode(ISD::BUILD_PAIR, DL, MVT::i64, OutLo, OutHi);
+ for (SDNode::value_iterator I = Op->value_begin(), E = Op->value_end();
+ I != E; ++I)
+ ResTys.push_back((*I == MVT::i64) ? MVT::Untyped : *I);
+
+ // Create node.
+ SDValue Val = DAG.getNode(Opc, DL, ResTys, &Ops[0], Ops.size());
+ SDValue Out = (ResTys[0] == MVT::Untyped) ? extractLOHI(Val, DL, DAG) : Val;
if (!HasChainIn)
return Out;
- SDValue Vals[] = { Out, OutHi.getValue(1) };
+ assert(Val->getValueType(1) == MVT::Other);
+ SDValue Vals[] = { Out, SDValue(Val.getNode(), 1) };
return DAG.getMergeValues(Vals, 2, DL);
}
-SDValue MipsTargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
+SDValue MipsTargetLowering::lowerINTRINSIC_WO_CHAIN(SDValue Op,
SelectionDAG &DAG) const {
switch (cast<ConstantSDNode>(Op->getOperand(0))->getZExtValue()) {
default:
return SDValue();
case Intrinsic::mips_shilo:
- return LowerDSPIntr(Op, DAG, MipsISD::SHILO, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::SHILO);
case Intrinsic::mips_dpau_h_qbl:
- return LowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBL, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBL);
case Intrinsic::mips_dpau_h_qbr:
- return LowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBR, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPAU_H_QBR);
case Intrinsic::mips_dpsu_h_qbl:
- return LowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBL, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBL);
case Intrinsic::mips_dpsu_h_qbr:
- return LowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBR, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPSU_H_QBR);
case Intrinsic::mips_dpa_w_ph:
- return LowerDSPIntr(Op, DAG, MipsISD::DPA_W_PH, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPA_W_PH);
case Intrinsic::mips_dps_w_ph:
- return LowerDSPIntr(Op, DAG, MipsISD::DPS_W_PH, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPS_W_PH);
case Intrinsic::mips_dpax_w_ph:
- return LowerDSPIntr(Op, DAG, MipsISD::DPAX_W_PH, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPAX_W_PH);
case Intrinsic::mips_dpsx_w_ph:
- return LowerDSPIntr(Op, DAG, MipsISD::DPSX_W_PH, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPSX_W_PH);
case Intrinsic::mips_mulsa_w_ph:
- return LowerDSPIntr(Op, DAG, MipsISD::MULSA_W_PH, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::MULSA_W_PH);
case Intrinsic::mips_mult:
- return LowerDSPIntr(Op, DAG, MipsISD::MULT, false, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::Mult);
case Intrinsic::mips_multu:
- return LowerDSPIntr(Op, DAG, MipsISD::MULTU, false, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::Multu);
case Intrinsic::mips_madd:
- return LowerDSPIntr(Op, DAG, MipsISD::MADD_DSP, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::MAdd);
case Intrinsic::mips_maddu:
- return LowerDSPIntr(Op, DAG, MipsISD::MADDU_DSP, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::MAddu);
case Intrinsic::mips_msub:
- return LowerDSPIntr(Op, DAG, MipsISD::MSUB_DSP, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::MSub);
case Intrinsic::mips_msubu:
- return LowerDSPIntr(Op, DAG, MipsISD::MSUBU_DSP, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::MSubu);
}
}
-SDValue MipsTargetLowering::LowerINTRINSIC_W_CHAIN(SDValue Op,
+SDValue MipsTargetLowering::lowerINTRINSIC_W_CHAIN(SDValue Op,
SelectionDAG &DAG) const {
switch (cast<ConstantSDNode>(Op->getOperand(1))->getZExtValue()) {
default:
return SDValue();
case Intrinsic::mips_extp:
- return LowerDSPIntr(Op, DAG, MipsISD::EXTP, true, false);
+ return lowerDSPIntr(Op, DAG, MipsISD::EXTP);
case Intrinsic::mips_extpdp:
- return LowerDSPIntr(Op, DAG, MipsISD::EXTPDP, true, false);
+ return lowerDSPIntr(Op, DAG, MipsISD::EXTPDP);
case Intrinsic::mips_extr_w:
- return LowerDSPIntr(Op, DAG, MipsISD::EXTR_W, true, false);
+ return lowerDSPIntr(Op, DAG, MipsISD::EXTR_W);
case Intrinsic::mips_extr_r_w:
- return LowerDSPIntr(Op, DAG, MipsISD::EXTR_R_W, true, false);
+ return lowerDSPIntr(Op, DAG, MipsISD::EXTR_R_W);
case Intrinsic::mips_extr_rs_w:
- return LowerDSPIntr(Op, DAG, MipsISD::EXTR_RS_W, true, false);
+ return lowerDSPIntr(Op, DAG, MipsISD::EXTR_RS_W);
case Intrinsic::mips_extr_s_h:
- return LowerDSPIntr(Op, DAG, MipsISD::EXTR_S_H, true, false);
+ return lowerDSPIntr(Op, DAG, MipsISD::EXTR_S_H);
case Intrinsic::mips_mthlip:
- return LowerDSPIntr(Op, DAG, MipsISD::MTHLIP, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::MTHLIP);
case Intrinsic::mips_mulsaq_s_w_ph:
- return LowerDSPIntr(Op, DAG, MipsISD::MULSAQ_S_W_PH, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::MULSAQ_S_W_PH);
case Intrinsic::mips_maq_s_w_phl:
- return LowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHL, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHL);
case Intrinsic::mips_maq_s_w_phr:
- return LowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHR, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::MAQ_S_W_PHR);
case Intrinsic::mips_maq_sa_w_phl:
- return LowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHL, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHL);
case Intrinsic::mips_maq_sa_w_phr:
- return LowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHR, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::MAQ_SA_W_PHR);
case Intrinsic::mips_dpaq_s_w_ph:
- return LowerDSPIntr(Op, DAG, MipsISD::DPAQ_S_W_PH, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPAQ_S_W_PH);
case Intrinsic::mips_dpsq_s_w_ph:
- return LowerDSPIntr(Op, DAG, MipsISD::DPSQ_S_W_PH, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPSQ_S_W_PH);
case Intrinsic::mips_dpaq_sa_l_w:
- return LowerDSPIntr(Op, DAG, MipsISD::DPAQ_SA_L_W, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPAQ_SA_L_W);
case Intrinsic::mips_dpsq_sa_l_w:
- return LowerDSPIntr(Op, DAG, MipsISD::DPSQ_SA_L_W, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPSQ_SA_L_W);
case Intrinsic::mips_dpaqx_s_w_ph:
- return LowerDSPIntr(Op, DAG, MipsISD::DPAQX_S_W_PH, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPAQX_S_W_PH);
case Intrinsic::mips_dpaqx_sa_w_ph:
- return LowerDSPIntr(Op, DAG, MipsISD::DPAQX_SA_W_PH, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPAQX_SA_W_PH);
case Intrinsic::mips_dpsqx_s_w_ph:
- return LowerDSPIntr(Op, DAG, MipsISD::DPSQX_S_W_PH, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPSQX_S_W_PH);
case Intrinsic::mips_dpsqx_sa_w_ph:
- return LowerDSPIntr(Op, DAG, MipsISD::DPSQX_SA_W_PH, true, true);
+ return lowerDSPIntr(Op, DAG, MipsISD::DPSQX_SA_W_PH);
}
}
+SDValue MipsTargetLowering::lowerADD(SDValue Op, SelectionDAG &DAG) const {
+ if (Op->getOperand(0).getOpcode() != ISD::FRAMEADDR
+ || cast<ConstantSDNode>
+ (Op->getOperand(0).getOperand(0))->getZExtValue() != 0
+ || Op->getOperand(1).getOpcode() != ISD::FRAME_TO_ARGS_OFFSET)
+ return SDValue();
+
+ // The pattern
+ // (add (frameaddr 0), (frame_to_args_offset))
+ // results from lowering llvm.eh.dwarf.cfa intrinsic. Transform it to
+ // (add FrameObject, 0)
+ // where FrameObject is a fixed StackObject with offset 0 which points to
+ // the old stack pointer.
+ MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
+ EVT ValTy = Op->getValueType(0);
+ int FI = MFI->CreateFixedObject(Op.getValueSizeInBits() / 8, 0, false);
+ SDValue InArgsAddr = DAG.getFrameIndex(FI, ValTy);
+ return DAG.getNode(ISD::ADD, Op->getDebugLoc(), ValTy, InArgsAddr,
+ DAG.getConstant(0, ValTy));
+}
+
//===----------------------------------------------------------------------===//
// Calling Convention Implementation
//===----------------------------------------------------------------------===//
Mips::D6, Mips::D7
};
- // ByVal Args
- if (ArgFlags.isByVal()) {
- State.HandleByVal(ValNo, ValVT, LocVT, LocInfo,
- 1 /*MinSize*/, 4 /*MinAlign*/, ArgFlags);
- unsigned NextReg = (State.getNextStackOffset() + 3) / 4;
- for (unsigned r = State.getFirstUnallocated(IntRegs, IntRegsSize);
- r < std::min(IntRegsSize, NextReg); ++r)
- State.AllocateReg(IntRegs[r]);
- return false;
- }
+ // Do not process byval args here.
+ if (ArgFlags.isByVal())
+ return true;
// Promote i8 and i16
if (LocVT == MVT::i8 || LocVT == MVT::i16) {
} else
llvm_unreachable("Cannot handle this ValVT.");
- unsigned SizeInBytes = ValVT.getSizeInBits() >> 3;
- unsigned Offset;
- if (!ArgFlags.isSRet())
- Offset = State.AllocateStack(SizeInBytes, OrigAlign);
- else
- Offset = State.AllocateStack(SizeInBytes, SizeInBytes);
-
- if (!Reg)
+ if (!Reg) {
+ unsigned Offset = State.AllocateStack(ValVT.getSizeInBits() >> 3,
+ OrigAlign);
State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo));
- else
+ } else
State.addLoc(CCValAssign::getReg(ValNo, ValVT, Reg, LocVT, LocInfo));
- return false; // CC must always match
-}
-
-static const uint16_t Mips64IntRegs[8] =
- {Mips::A0_64, Mips::A1_64, Mips::A2_64, Mips::A3_64,
- Mips::T0_64, Mips::T1_64, Mips::T2_64, Mips::T3_64};
-static const uint16_t Mips64DPRegs[8] =
- {Mips::D12_64, Mips::D13_64, Mips::D14_64, Mips::D15_64,
- Mips::D16_64, Mips::D17_64, Mips::D18_64, Mips::D19_64};
-
-static bool CC_Mips64Byval(unsigned ValNo, MVT ValVT, MVT LocVT,
- CCValAssign::LocInfo LocInfo,
- ISD::ArgFlagsTy ArgFlags, CCState &State) {
- unsigned Align = std::max(ArgFlags.getByValAlign(), (unsigned)8);
- unsigned Size = (ArgFlags.getByValSize() + 7) / 8 * 8;
- unsigned FirstIdx = State.getFirstUnallocated(Mips64IntRegs, 8);
-
- assert(Align <= 16 && "Cannot handle alignments larger than 16.");
-
- // If byval is 16-byte aligned, the first arg register must be even.
- if ((Align == 16) && (FirstIdx % 2)) {
- State.AllocateReg(Mips64IntRegs[FirstIdx], Mips64DPRegs[FirstIdx]);
- ++FirstIdx;
- }
-
- // Mark the registers allocated.
- for (unsigned I = FirstIdx; Size && (I < 8); Size -= 8, ++I)
- State.AllocateReg(Mips64IntRegs[I], Mips64DPRegs[I]);
-
- // Allocate space on caller's stack.
- unsigned Offset = State.AllocateStack(Size, Align);
-
- if (FirstIdx < 8)
- State.addLoc(CCValAssign::getReg(ValNo, ValVT, Mips64IntRegs[FirstIdx],
- LocVT, LocInfo));
- else
- State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo));
-
- return true;
+ return false;
}
#include "MipsGenCallingConv.inc"
-static void
-AnalyzeMips64CallOperands(CCState &CCInfo,
- const SmallVectorImpl<ISD::OutputArg> &Outs) {
- unsigned NumOps = Outs.size();
- for (unsigned i = 0; i != NumOps; ++i) {
- MVT ArgVT = Outs[i].VT;
- ISD::ArgFlagsTy ArgFlags = Outs[i].Flags;
- bool R;
-
- if (Outs[i].IsFixed)
- R = CC_MipsN(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, CCInfo);
- else
- R = CC_MipsN_VarArg(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, CCInfo);
-
- if (R) {
-#ifndef NDEBUG
- dbgs() << "Call operand #" << i << " has unhandled type "
- << EVT(ArgVT).getEVTString();
-#endif
- llvm_unreachable(0);
- }
- }
-}
-
//===----------------------------------------------------------------------===//
// Call Calling Convention Implementation
//===----------------------------------------------------------------------===//
static const unsigned O32IntRegsSize = 4;
-static const uint16_t O32IntRegs[] = {
- Mips::A0, Mips::A1, Mips::A2, Mips::A3
-};
-
// Return next O32 integer argument register.
static unsigned getNextIntArgReg(unsigned Reg) {
assert((Reg == Mips::A0) || (Reg == Mips::A2));
return (Reg == Mips::A0) ? Mips::A1 : Mips::A3;
}
-// Write ByVal Arg to arg registers and stack.
-static void
-WriteByValArg(SDValue Chain, DebugLoc dl,
- SmallVector<std::pair<unsigned, SDValue>, 16> &RegsToPass,
- SmallVector<SDValue, 8> &MemOpChains, SDValue StackPtr,
- MachineFrameInfo *MFI, SelectionDAG &DAG, SDValue Arg,
- const CCValAssign &VA, const ISD::ArgFlagsTy &Flags,
- MVT PtrType, bool isLittle) {
- unsigned LocMemOffset = VA.getLocMemOffset();
- unsigned Offset = 0;
- uint32_t RemainingSize = Flags.getByValSize();
- unsigned ByValAlign = Flags.getByValAlign();
-
- // Copy the first 4 words of byval arg to registers A0 - A3.
- // FIXME: Use a stricter alignment if it enables better optimization in passes
- // run later.
- for (; RemainingSize >= 4 && LocMemOffset < 4 * 4;
- Offset += 4, RemainingSize -= 4, LocMemOffset += 4) {
- SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg,
- DAG.getConstant(Offset, MVT::i32));
- SDValue LoadVal = DAG.getLoad(MVT::i32, dl, Chain, LoadPtr,
- MachinePointerInfo(), false, false, false,
- std::min(ByValAlign, (unsigned )4));
- MemOpChains.push_back(LoadVal.getValue(1));
- unsigned DstReg = O32IntRegs[LocMemOffset / 4];
- RegsToPass.push_back(std::make_pair(DstReg, LoadVal));
+SDValue
+MipsTargetLowering::passArgOnStack(SDValue StackPtr, unsigned Offset,
+ SDValue Chain, SDValue Arg, DebugLoc DL,
+ bool IsTailCall, SelectionDAG &DAG) const {
+ if (!IsTailCall) {
+ SDValue PtrOff = DAG.getNode(ISD::ADD, DL, getPointerTy(), StackPtr,
+ DAG.getIntPtrConstant(Offset));
+ return DAG.getStore(Chain, DL, Arg, PtrOff, MachinePointerInfo(), false,
+ false, 0);
}
- if (RemainingSize == 0)
- return;
-
- // If there still is a register available for argument passing, write the
- // remaining part of the structure to it using subword loads and shifts.
- if (LocMemOffset < 4 * 4) {
- assert(RemainingSize <= 3 && RemainingSize >= 1 &&
- "There must be one to three bytes remaining.");
- unsigned LoadSize = (RemainingSize == 3 ? 2 : RemainingSize);
- SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg,
- DAG.getConstant(Offset, MVT::i32));
- unsigned Alignment = std::min(ByValAlign, (unsigned )4);
- SDValue LoadVal = DAG.getExtLoad(ISD::ZEXTLOAD, dl, MVT::i32, Chain,
- LoadPtr, MachinePointerInfo(),
- MVT::getIntegerVT(LoadSize * 8), false,
- false, Alignment);
- MemOpChains.push_back(LoadVal.getValue(1));
-
- // If target is big endian, shift it to the most significant half-word or
- // byte.
- if (!isLittle)
- LoadVal = DAG.getNode(ISD::SHL, dl, MVT::i32, LoadVal,
- DAG.getConstant(32 - LoadSize * 8, MVT::i32));
-
- Offset += LoadSize;
- RemainingSize -= LoadSize;
-
- // Read second subword if necessary.
- if (RemainingSize != 0) {
- assert(RemainingSize == 1 && "There must be one byte remaining.");
- LoadPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg,
- DAG.getConstant(Offset, MVT::i32));
- unsigned Alignment = std::min(ByValAlign, (unsigned )2);
- SDValue Subword = DAG.getExtLoad(ISD::ZEXTLOAD, dl, MVT::i32, Chain,
- LoadPtr, MachinePointerInfo(),
- MVT::i8, false, false, Alignment);
- MemOpChains.push_back(Subword.getValue(1));
- // Insert the loaded byte to LoadVal.
- // FIXME: Use INS if supported by target.
- unsigned ShiftAmt = isLittle ? 16 : 8;
- SDValue Shift = DAG.getNode(ISD::SHL, dl, MVT::i32, Subword,
- DAG.getConstant(ShiftAmt, MVT::i32));
- LoadVal = DAG.getNode(ISD::OR, dl, MVT::i32, LoadVal, Shift);
- }
+ MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
+ int FI = MFI->CreateFixedObject(Arg.getValueSizeInBits() / 8, Offset, false);
+ SDValue FIN = DAG.getFrameIndex(FI, getPointerTy());
+ return DAG.getStore(Chain, DL, Arg, FIN, MachinePointerInfo(),
+ /*isVolatile=*/ true, false, 0);
+}
- unsigned DstReg = O32IntRegs[LocMemOffset / 4];
- RegsToPass.push_back(std::make_pair(DstReg, LoadVal));
- return;
+void MipsTargetLowering::
+getOpndList(SmallVectorImpl<SDValue> &Ops,
+ std::deque< std::pair<unsigned, SDValue> > &RegsToPass,
+ bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage,
+ CallLoweringInfo &CLI, SDValue Callee, SDValue Chain) const {
+ // Insert node "GP copy globalreg" before call to function.
+ //
+ // R_MIPS_CALL* operators (emitted when non-internal functions are called
+ // in PIC mode) allow symbols to be resolved via lazy binding.
+ // The lazy binding stub requires GP to point to the GOT.
+ if (IsPICCall && !InternalLinkage) {
+ unsigned GPReg = IsN64 ? Mips::GP_64 : Mips::GP;
+ EVT Ty = IsN64 ? MVT::i64 : MVT::i32;
+ RegsToPass.push_back(std::make_pair(GPReg, getGlobalReg(CLI.DAG, Ty)));
}
- // Copy remaining part of byval arg using memcpy.
- SDValue Src = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg,
- DAG.getConstant(Offset, MVT::i32));
- SDValue Dst = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr,
- DAG.getIntPtrConstant(LocMemOffset));
- Chain = DAG.getMemcpy(Chain, dl, Dst, Src,
- DAG.getConstant(RemainingSize, MVT::i32),
- std::min(ByValAlign, (unsigned)4),
- /*isVolatile=*/false, /*AlwaysInline=*/false,
- MachinePointerInfo(0), MachinePointerInfo(0));
- MemOpChains.push_back(Chain);
-}
-
-// Copy Mips64 byVal arg to registers and stack.
-void static
-PassByValArg64(SDValue Chain, DebugLoc dl,
- SmallVector<std::pair<unsigned, SDValue>, 16> &RegsToPass,
- SmallVector<SDValue, 8> &MemOpChains, SDValue StackPtr,
- MachineFrameInfo *MFI, SelectionDAG &DAG, SDValue Arg,
- const CCValAssign &VA, const ISD::ArgFlagsTy &Flags,
- EVT PtrTy, bool isLittle) {
- unsigned ByValSize = Flags.getByValSize();
- unsigned Alignment = std::min(Flags.getByValAlign(), (unsigned)8);
- bool IsRegLoc = VA.isRegLoc();
- unsigned Offset = 0; // Offset in # of bytes from the beginning of struct.
- unsigned LocMemOffset = 0;
- unsigned MemCpySize = ByValSize;
-
- if (!IsRegLoc)
- LocMemOffset = VA.getLocMemOffset();
- else {
- const uint16_t *Reg = std::find(Mips64IntRegs, Mips64IntRegs + 8,
- VA.getLocReg());
- const uint16_t *RegEnd = Mips64IntRegs + 8;
-
- // Copy double words to registers.
- for (; (Reg != RegEnd) && (ByValSize >= Offset + 8); ++Reg, Offset += 8) {
- SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, PtrTy, Arg,
- DAG.getConstant(Offset, PtrTy));
- SDValue LoadVal = DAG.getLoad(MVT::i64, dl, Chain, LoadPtr,
- MachinePointerInfo(), false, false, false,
- Alignment);
- MemOpChains.push_back(LoadVal.getValue(1));
- RegsToPass.push_back(std::make_pair(*Reg, LoadVal));
- }
-
- // Return if the struct has been fully copied.
- if (!(MemCpySize = ByValSize - Offset))
- return;
-
- // If there is an argument register available, copy the remainder of the
- // byval argument with sub-doubleword loads and shifts.
- if (Reg != RegEnd) {
- assert((ByValSize < Offset + 8) &&
- "Size of the remainder should be smaller than 8-byte.");
- SDValue Val;
- for (unsigned LoadSize = 4; Offset < ByValSize; LoadSize /= 2) {
- unsigned RemSize = ByValSize - Offset;
-
- if (RemSize < LoadSize)
- continue;
-
- SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, PtrTy, Arg,
- DAG.getConstant(Offset, PtrTy));
- SDValue LoadVal =
- DAG.getExtLoad(ISD::ZEXTLOAD, dl, MVT::i64, Chain, LoadPtr,
- MachinePointerInfo(), MVT::getIntegerVT(LoadSize * 8),
- false, false, Alignment);
- MemOpChains.push_back(LoadVal.getValue(1));
-
- // Offset in number of bits from double word boundary.
- unsigned OffsetDW = (Offset % 8) * 8;
- unsigned Shamt = isLittle ? OffsetDW : 64 - (OffsetDW + LoadSize * 8);
- SDValue Shift = DAG.getNode(ISD::SHL, dl, MVT::i64, LoadVal,
- DAG.getConstant(Shamt, MVT::i32));
-
- Val = Val.getNode() ? DAG.getNode(ISD::OR, dl, MVT::i64, Val, Shift) :
- Shift;
- Offset += LoadSize;
- Alignment = std::min(Alignment, LoadSize);
- }
+ // Build a sequence of copy-to-reg nodes chained together with token
+ // chain and flag operands which copy the outgoing args into registers.
+ // The InFlag in necessary since all emitted instructions must be
+ // stuck together.
+ SDValue InFlag;
- RegsToPass.push_back(std::make_pair(*Reg, Val));
- return;
- }
+ for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) {
+ Chain = CLI.DAG.getCopyToReg(Chain, CLI.DL, RegsToPass[i].first,
+ RegsToPass[i].second, InFlag);
+ InFlag = Chain.getValue(1);
}
- assert(MemCpySize && "MemCpySize must not be zero.");
+ // Add argument registers to the end of the list so that they are
+ // known live into the call.
+ for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i)
+ Ops.push_back(CLI.DAG.getRegister(RegsToPass[i].first,
+ RegsToPass[i].second.getValueType()));
- // Copy remainder of byval arg to it with memcpy.
- SDValue Src = DAG.getNode(ISD::ADD, dl, PtrTy, Arg,
- DAG.getConstant(Offset, PtrTy));
- SDValue Dst = DAG.getNode(ISD::ADD, dl, MVT::i64, StackPtr,
- DAG.getIntPtrConstant(LocMemOffset));
- Chain = DAG.getMemcpy(Chain, dl, Dst, Src,
- DAG.getConstant(MemCpySize, PtrTy), Alignment,
- /*isVolatile=*/false, /*AlwaysInline=*/false,
- MachinePointerInfo(0), MachinePointerInfo(0));
- MemOpChains.push_back(Chain);
+ // Add a register mask operand representing the call-preserved registers.
+ const TargetRegisterInfo *TRI = getTargetMachine().getRegisterInfo();
+ const uint32_t *Mask = TRI->getCallPreservedMask(CLI.CallConv);
+ assert(Mask && "Missing call preserved mask for calling convention");
+ Ops.push_back(CLI.DAG.getRegisterMask(Mask));
+
+ if (InFlag.getNode())
+ Ops.push_back(InFlag);
}
/// LowerCall - functions arguments are copied from virtual regs to
/// (physical regs)/(stack frame), CALLSEQ_START and CALLSEQ_END are emitted.
-/// TODO: isTailCall.
SDValue
MipsTargetLowering::LowerCall(TargetLowering::CallLoweringInfo &CLI,
SmallVectorImpl<SDValue> &InVals) const {
SelectionDAG &DAG = CLI.DAG;
- DebugLoc &dl = CLI.DL;
+ DebugLoc &DL = CLI.DL;
SmallVector<ISD::OutputArg, 32> &Outs = CLI.Outs;
SmallVector<SDValue, 32> &OutVals = CLI.OutVals;
SmallVector<ISD::InputArg, 32> &Ins = CLI.Ins;
SDValue Chain = CLI.Chain;
SDValue Callee = CLI.Callee;
- bool &isTailCall = CLI.IsTailCall;
+ bool &IsTailCall = CLI.IsTailCall;
CallingConv::ID CallConv = CLI.CallConv;
- bool isVarArg = CLI.IsVarArg;
-
- // MIPs target does not yet support tail call optimization.
- isTailCall = false;
+ bool IsVarArg = CLI.IsVarArg;
MachineFunction &MF = DAG.getMachineFunction();
MachineFrameInfo *MFI = MF.getFrameInfo();
const TargetFrameLowering *TFL = MF.getTarget().getFrameLowering();
bool IsPIC = getTargetMachine().getRelocationModel() == Reloc::PIC_;
- MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>();
// Analyze operands of the call, assigning locations to each operand.
SmallVector<CCValAssign, 16> ArgLocs;
- CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
+ CCState CCInfo(CallConv, IsVarArg, DAG.getMachineFunction(),
getTargetMachine(), ArgLocs, *DAG.getContext());
+ MipsCC MipsCCInfo(CallConv, IsO32, CCInfo);
- if (CallConv == CallingConv::Fast)
- CCInfo.AnalyzeCallOperands(Outs, CC_Mips_FastCC);
- else if (IsO32)
- CCInfo.AnalyzeCallOperands(Outs, CC_MipsO32);
- else if (HasMips64)
- AnalyzeMips64CallOperands(CCInfo, Outs);
- else
- CCInfo.AnalyzeCallOperands(Outs, CC_Mips);
+ MipsCCInfo.analyzeCallOperands(Outs, IsVarArg,
+ getTargetMachine().Options.UseSoftFloat,
+ Callee.getNode(), CLI.Args);
// Get a count of how many bytes are to be pushed on the stack.
unsigned NextStackOffset = CCInfo.getNextStackOffset();
- unsigned StackAlignment = TFL->getStackAlignment();
- NextStackOffset = RoundUpToAlignment(NextStackOffset, StackAlignment);
- // Update size of the maximum argument space.
- // For O32, a minimum of four words (16 bytes) of argument space is
- // allocated.
- if (IsO32 && (CallConv != CallingConv::Fast))
- NextStackOffset = std::max(NextStackOffset, (unsigned)16);
+ // Check if it's really possible to do a tail call.
+ if (IsTailCall)
+ IsTailCall =
+ isEligibleForTailCallOptimization(MipsCCInfo, NextStackOffset,
+ *MF.getInfo<MipsFunctionInfo>());
+
+ if (IsTailCall)
+ ++NumTailCalls;
// Chain is the output chain of the last Load/Store or CopyToReg node.
// ByValChain is the output chain of the last Memcpy node created for copying
// byval arguments to the stack.
+ unsigned StackAlignment = TFL->getStackAlignment();
+ NextStackOffset = RoundUpToAlignment(NextStackOffset, StackAlignment);
SDValue NextStackOffsetVal = DAG.getIntPtrConstant(NextStackOffset, true);
- Chain = DAG.getCALLSEQ_START(Chain, NextStackOffsetVal);
- SDValue StackPtr = DAG.getCopyFromReg(Chain, dl,
+ if (!IsTailCall)
+ Chain = DAG.getCALLSEQ_START(Chain, NextStackOffsetVal);
+
+ SDValue StackPtr = DAG.getCopyFromReg(Chain, DL,
IsN64 ? Mips::SP_64 : Mips::SP,
getPointerTy());
- if (MipsFI->getMaxCallFrameSize() < NextStackOffset)
- MipsFI->setMaxCallFrameSize(NextStackOffset);
-
// With EABI is it possible to have 16 args on registers.
- SmallVector<std::pair<unsigned, SDValue>, 16> RegsToPass;
+ std::deque< std::pair<unsigned, SDValue> > RegsToPass;
SmallVector<SDValue, 8> MemOpChains;
+ MipsCC::byval_iterator ByValArg = MipsCCInfo.byval_begin();
// Walk the register/memloc assignments, inserting copies/loads.
for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
if (Flags.isByVal()) {
assert(Flags.getByValSize() &&
"ByVal args of size 0 should have been ignored by front-end.");
- if (IsO32)
- WriteByValArg(Chain, dl, RegsToPass, MemOpChains, StackPtr,
- MFI, DAG, Arg, VA, Flags, getPointerTy(),
- Subtarget->isLittle());
- else
- PassByValArg64(Chain, dl, RegsToPass, MemOpChains, StackPtr,
- MFI, DAG, Arg, VA, Flags, getPointerTy(),
- Subtarget->isLittle());
+ assert(ByValArg != MipsCCInfo.byval_end());
+ assert(!IsTailCall &&
+ "Do not tail-call optimize if there is a byval argument.");
+ passByValArg(Chain, DL, RegsToPass, MemOpChains, StackPtr, MFI, DAG, Arg,
+ MipsCCInfo, *ByValArg, Flags, Subtarget->isLittle());
+ ++ByValArg;
continue;
}
case CCValAssign::Full:
if (VA.isRegLoc()) {
if ((ValVT == MVT::f32 && LocVT == MVT::i32) ||
- (ValVT == MVT::f64 && LocVT == MVT::i64))
- Arg = DAG.getNode(ISD::BITCAST, dl, LocVT, Arg);
+ (ValVT == MVT::f64 && LocVT == MVT::i64) ||
+ (ValVT == MVT::i64 && LocVT == MVT::f64))
+ Arg = DAG.getNode(ISD::BITCAST, DL, LocVT, Arg);
else if (ValVT == MVT::f64 && LocVT == MVT::i32) {
- SDValue Lo = DAG.getNode(MipsISD::ExtractElementF64, dl, MVT::i32,
+ SDValue Lo = DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32,
Arg, DAG.getConstant(0, MVT::i32));
- SDValue Hi = DAG.getNode(MipsISD::ExtractElementF64, dl, MVT::i32,
+ SDValue Hi = DAG.getNode(MipsISD::ExtractElementF64, DL, MVT::i32,
Arg, DAG.getConstant(1, MVT::i32));
if (!Subtarget->isLittle())
std::swap(Lo, Hi);
}
break;
case CCValAssign::SExt:
- Arg = DAG.getNode(ISD::SIGN_EXTEND, dl, LocVT, Arg);
+ Arg = DAG.getNode(ISD::SIGN_EXTEND, DL, LocVT, Arg);
break;
case CCValAssign::ZExt:
- Arg = DAG.getNode(ISD::ZERO_EXTEND, dl, LocVT, Arg);
+ Arg = DAG.getNode(ISD::ZERO_EXTEND, DL, LocVT, Arg);
break;
case CCValAssign::AExt:
- Arg = DAG.getNode(ISD::ANY_EXTEND, dl, LocVT, Arg);
+ Arg = DAG.getNode(ISD::ANY_EXTEND, DL, LocVT, Arg);
break;
}
// emit ISD::STORE whichs stores the
// parameter value to a stack Location
- SDValue PtrOff = DAG.getNode(ISD::ADD, dl, getPointerTy(), StackPtr,
- DAG.getIntPtrConstant(VA.getLocMemOffset()));
- MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff,
- MachinePointerInfo(), false, false, 0));
+ MemOpChains.push_back(passArgOnStack(StackPtr, VA.getLocMemOffset(),
+ Chain, Arg, DL, IsTailCall, DAG));
}
// Transform all store nodes into one single node because all store
// nodes are independent of each other.
if (!MemOpChains.empty())
- Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
+ Chain = DAG.getNode(ISD::TokenFactor, DL, MVT::Other,
&MemOpChains[0], MemOpChains.size());
// If the callee is a GlobalAddress/ExternalSymbol node (quite common, every
// direct call is) turn it into a TargetGlobalAddress/TargetExternalSymbol
// node so that legalize doesn't hack it.
- unsigned char OpFlag;
bool IsPICCall = (IsN64 || IsPIC); // true if calls are translated to jalr $25
- bool GlobalOrExternal = false;
+ bool GlobalOrExternal = false, InternalLinkage = false;
SDValue CalleeLo;
if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
- if (IsPICCall && G->getGlobal()->hasInternalLinkage()) {
- OpFlag = IsO32 ? MipsII::MO_GOT : MipsII::MO_GOT_PAGE;
- unsigned char LoFlag = IsO32 ? MipsII::MO_ABS_LO : MipsII::MO_GOT_OFST;
- Callee = DAG.getTargetGlobalAddress(G->getGlobal(), dl, getPointerTy(), 0,
- OpFlag);
- CalleeLo = DAG.getTargetGlobalAddress(G->getGlobal(), dl, getPointerTy(),
- 0, LoFlag);
- } else {
- OpFlag = IsPICCall ? MipsII::MO_GOT_CALL : MipsII::MO_NO_FLAG;
- Callee = DAG.getTargetGlobalAddress(G->getGlobal(), dl,
- getPointerTy(), 0, OpFlag);
- }
-
+ if (IsPICCall) {
+ InternalLinkage = G->getGlobal()->hasInternalLinkage();
+
+ if (InternalLinkage)
+ Callee = getAddrLocal(Callee, DAG, HasMips64);
+ else if (LargeGOT)
+ Callee = getAddrGlobalLargeGOT(Callee, DAG, MipsII::MO_CALL_HI16,
+ MipsII::MO_CALL_LO16);
+ else
+ Callee = getAddrGlobal(Callee, DAG, MipsII::MO_GOT_CALL);
+ } else
+ Callee = DAG.getTargetGlobalAddress(G->getGlobal(), DL, getPointerTy(), 0,
+ MipsII::MO_NO_FLAG);
GlobalOrExternal = true;
}
else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) {
- if (IsN64 || (!IsO32 && IsPIC))
- OpFlag = MipsII::MO_GOT_DISP;
- else if (!IsPIC) // !N64 && static
- OpFlag = MipsII::MO_NO_FLAG;
- else // O32 & PIC
- OpFlag = MipsII::MO_GOT_CALL;
- Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy(),
- OpFlag);
- GlobalOrExternal = true;
- }
-
- SDValue InFlag;
-
- // Create nodes that load address of callee and copy it to T9
- if (IsPICCall) {
- if (GlobalOrExternal) {
- // Load callee address
- Callee = DAG.getNode(MipsISD::Wrapper, dl, getPointerTy(),
- GetGlobalReg(DAG, getPointerTy()), Callee);
- SDValue LoadValue = DAG.getLoad(getPointerTy(), dl, DAG.getEntryNode(),
- Callee, MachinePointerInfo::getGOT(),
- false, false, false, 0);
-
- // Use GOT+LO if callee has internal linkage.
- if (CalleeLo.getNode()) {
- SDValue Lo = DAG.getNode(MipsISD::Lo, dl, getPointerTy(), CalleeLo);
- Callee = DAG.getNode(ISD::ADD, dl, getPointerTy(), LoadValue, Lo);
- } else
- Callee = LoadValue;
- }
- }
-
- // T9 register operand.
- SDValue T9;
+ if (!IsN64 && !IsPIC) // !N64 && static
+ Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy(),
+ MipsII::MO_NO_FLAG);
+ else if (LargeGOT)
+ Callee = getAddrGlobalLargeGOT(Callee, DAG, MipsII::MO_CALL_HI16,
+ MipsII::MO_CALL_LO16);
+ else // N64 || PIC
+ Callee = getAddrGlobal(Callee, DAG, MipsII::MO_GOT_CALL);
- // T9 should contain the address of the callee function if
- // -reloction-model=pic or it is an indirect call.
- if (IsPICCall || !GlobalOrExternal) {
- // copy to T9
- unsigned T9Reg = IsN64 ? Mips::T9_64 : Mips::T9;
- Chain = DAG.getCopyToReg(Chain, dl, T9Reg, Callee, SDValue(0, 0));
- InFlag = Chain.getValue(1);
-
- if (Subtarget->inMips16Mode())
- T9 = DAG.getRegister(T9Reg, getPointerTy());
- else
- Callee = DAG.getRegister(T9Reg, getPointerTy());
- }
-
- // Insert node "GP copy globalreg" before call to function.
- // Lazy-binding stubs require GP to point to the GOT.
- if (IsPICCall) {
- unsigned GPReg = IsN64 ? Mips::GP_64 : Mips::GP;
- EVT Ty = IsN64 ? MVT::i64 : MVT::i32;
- RegsToPass.push_back(std::make_pair(GPReg, GetGlobalReg(DAG, Ty)));
- }
-
- // Build a sequence of copy-to-reg nodes chained together with token
- // chain and flag operands which copy the outgoing args into registers.
- // The InFlag in necessary since all emitted instructions must be
- // stuck together.
- for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) {
- Chain = DAG.getCopyToReg(Chain, dl, RegsToPass[i].first,
- RegsToPass[i].second, InFlag);
- InFlag = Chain.getValue(1);
+ GlobalOrExternal = true;
}
- // MipsJmpLink = #chain, #target_address, #opt_in_flags...
- // = Chain, Callee, Reg#1, Reg#2, ...
- //
- // Returns a chain & a flag for retval copy to use.
+ SmallVector<SDValue, 8> Ops(1, Chain);
SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Glue);
- SmallVector<SDValue, 8> Ops;
- Ops.push_back(Chain);
- Ops.push_back(Callee);
-
- // Add argument registers to the end of the list so that they are
- // known live into the call.
- for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i)
- Ops.push_back(DAG.getRegister(RegsToPass[i].first,
- RegsToPass[i].second.getValueType()));
- // Add T9 register operand.
- if (T9.getNode())
- Ops.push_back(T9);
+ getOpndList(Ops, RegsToPass, IsPICCall, GlobalOrExternal, InternalLinkage,
+ CLI, Callee, Chain);
- // Add a register mask operand representing the call-preserved registers.
- const TargetRegisterInfo *TRI = getTargetMachine().getRegisterInfo();
- const uint32_t *Mask = TRI->getCallPreservedMask(CallConv);
- assert(Mask && "Missing call preserved mask for calling convention");
- Ops.push_back(DAG.getRegisterMask(Mask));
+ if (IsTailCall)
+ return DAG.getNode(MipsISD::TailCall, DL, MVT::Other, &Ops[0], Ops.size());
- if (InFlag.getNode())
- Ops.push_back(InFlag);
-
- Chain = DAG.getNode(MipsISD::JmpLink, dl, NodeTys, &Ops[0], Ops.size());
- InFlag = Chain.getValue(1);
+ Chain = DAG.getNode(MipsISD::JmpLink, DL, NodeTys, &Ops[0], Ops.size());
+ SDValue InFlag = Chain.getValue(1);
// Create the CALLSEQ_END node.
Chain = DAG.getCALLSEQ_END(Chain, NextStackOffsetVal,
// Handle result values, copying them out of physregs into vregs that we
// return.
- return LowerCallResult(Chain, InFlag, CallConv, isVarArg,
- Ins, dl, DAG, InVals);
+ return LowerCallResult(Chain, InFlag, CallConv, IsVarArg,
+ Ins, DL, DAG, InVals, CLI.Callee.getNode(), CLI.RetTy);
}
/// LowerCallResult - Lower the result values of a call into the
/// appropriate copies out of appropriate physical registers.
SDValue
MipsTargetLowering::LowerCallResult(SDValue Chain, SDValue InFlag,
- CallingConv::ID CallConv, bool isVarArg,
+ CallingConv::ID CallConv, bool IsVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
- DebugLoc dl, SelectionDAG &DAG,
- SmallVectorImpl<SDValue> &InVals) const {
+ DebugLoc DL, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals,
+ const SDNode *CallNode,
+ const Type *RetTy) const {
// Assign locations to each value returned by this call.
SmallVector<CCValAssign, 16> RVLocs;
- CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
+ CCState CCInfo(CallConv, IsVarArg, DAG.getMachineFunction(),
getTargetMachine(), RVLocs, *DAG.getContext());
+ MipsCC MipsCCInfo(CallConv, IsO32, CCInfo);
- CCInfo.AnalyzeCallResult(Ins, RetCC_Mips);
+ MipsCCInfo.analyzeCallResult(Ins, getTargetMachine().Options.UseSoftFloat,
+ CallNode, RetTy);
// Copy all of the result registers out of their specified physreg.
for (unsigned i = 0; i != RVLocs.size(); ++i) {
- Chain = DAG.getCopyFromReg(Chain, dl, RVLocs[i].getLocReg(),
- RVLocs[i].getValVT(), InFlag).getValue(1);
- InFlag = Chain.getValue(2);
- InVals.push_back(Chain.getValue(0));
+ SDValue Val = DAG.getCopyFromReg(Chain, DL, RVLocs[i].getLocReg(),
+ RVLocs[i].getLocVT(), InFlag);
+ Chain = Val.getValue(1);
+ InFlag = Val.getValue(2);
+
+ if (RVLocs[i].getValVT() != RVLocs[i].getLocVT())
+ Val = DAG.getNode(ISD::BITCAST, DL, RVLocs[i].getValVT(), Val);
+
+ InVals.push_back(Val);
}
return Chain;
//===----------------------------------------------------------------------===//
// Formal Arguments Calling Convention Implementation
//===----------------------------------------------------------------------===//
-static void ReadByValArg(MachineFunction &MF, SDValue Chain, DebugLoc dl,
- std::vector<SDValue> &OutChains,
- SelectionDAG &DAG, unsigned NumWords, SDValue FIN,
- const CCValAssign &VA, const ISD::ArgFlagsTy &Flags,
- const Argument *FuncArg) {
- unsigned LocMem = VA.getLocMemOffset();
- unsigned FirstWord = LocMem / 4;
-
- // copy register A0 - A3 to frame object
- for (unsigned i = 0; i < NumWords; ++i) {
- unsigned CurWord = FirstWord + i;
- if (CurWord >= O32IntRegsSize)
- break;
-
- unsigned SrcReg = O32IntRegs[CurWord];
- unsigned Reg = AddLiveIn(MF, SrcReg, &Mips::CPURegsRegClass);
- SDValue StorePtr = DAG.getNode(ISD::ADD, dl, MVT::i32, FIN,
- DAG.getConstant(i * 4, MVT::i32));
- SDValue Store = DAG.getStore(Chain, dl, DAG.getRegister(Reg, MVT::i32),
- StorePtr, MachinePointerInfo(FuncArg, i * 4),
- false, false, 0);
- OutChains.push_back(Store);
- }
-}
-
-// Create frame object on stack and copy registers used for byval passing to it.
-static unsigned
-CopyMips64ByValRegs(MachineFunction &MF, SDValue Chain, DebugLoc dl,
- std::vector<SDValue> &OutChains, SelectionDAG &DAG,
- const CCValAssign &VA, const ISD::ArgFlagsTy &Flags,
- MachineFrameInfo *MFI, bool IsRegLoc,
- SmallVectorImpl<SDValue> &InVals, MipsFunctionInfo *MipsFI,
- EVT PtrTy, const Argument *FuncArg) {
- const uint16_t *Reg = Mips64IntRegs + 8;
- int FOOffset; // Frame object offset from virtual frame pointer.
-
- if (IsRegLoc) {
- Reg = std::find(Mips64IntRegs, Mips64IntRegs + 8, VA.getLocReg());
- FOOffset = (Reg - Mips64IntRegs) * 8 - 8 * 8;
- }
- else
- FOOffset = VA.getLocMemOffset();
-
- // Create frame object.
- unsigned NumRegs = (Flags.getByValSize() + 7) / 8;
- unsigned LastFI = MFI->CreateFixedObject(NumRegs * 8, FOOffset, true);
- SDValue FIN = DAG.getFrameIndex(LastFI, PtrTy);
- InVals.push_back(FIN);
-
- // Copy arg registers.
- for (unsigned I = 0; (Reg != Mips64IntRegs + 8) && (I < NumRegs);
- ++Reg, ++I) {
- unsigned VReg = AddLiveIn(MF, *Reg, &Mips::CPU64RegsRegClass);
- SDValue StorePtr = DAG.getNode(ISD::ADD, dl, PtrTy, FIN,
- DAG.getConstant(I * 8, PtrTy));
- SDValue Store = DAG.getStore(Chain, dl, DAG.getRegister(VReg, MVT::i64),
- StorePtr, MachinePointerInfo(FuncArg, I * 8),
- false, false, 0);
- OutChains.push_back(Store);
- }
-
- return LastFI;
-}
-
/// LowerFormalArguments - transform physical registers into virtual registers
/// and generate load operations for arguments places on the stack.
SDValue
MipsTargetLowering::LowerFormalArguments(SDValue Chain,
CallingConv::ID CallConv,
- bool isVarArg,
+ bool IsVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
- DebugLoc dl, SelectionDAG &DAG,
+ DebugLoc DL, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals)
const {
MachineFunction &MF = DAG.getMachineFunction();
// Assign locations to all of the incoming arguments.
SmallVector<CCValAssign, 16> ArgLocs;
- CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
+ CCState CCInfo(CallConv, IsVarArg, DAG.getMachineFunction(),
getTargetMachine(), ArgLocs, *DAG.getContext());
-
- if (CallConv == CallingConv::Fast)
- CCInfo.AnalyzeFormalArguments(Ins, CC_Mips_FastCC);
- else if (IsO32)
- CCInfo.AnalyzeFormalArguments(Ins, CC_MipsO32);
- else
- CCInfo.AnalyzeFormalArguments(Ins, CC_Mips);
-
+ MipsCC MipsCCInfo(CallConv, IsO32, CCInfo);
Function::const_arg_iterator FuncArg =
DAG.getMachineFunction().getFunction()->arg_begin();
- int LastFI = 0;// MipsFI->LastInArgFI is 0 at the entry of this function.
+ bool UseSoftFloat = getTargetMachine().Options.UseSoftFloat;
+
+ MipsCCInfo.analyzeFormalArguments(Ins, UseSoftFloat, FuncArg);
+ MipsFI->setFormalArgInfo(CCInfo.getNextStackOffset(),
+ MipsCCInfo.hasByValArg());
+
+ unsigned CurArgIdx = 0;
+ MipsCC::byval_iterator ByValArg = MipsCCInfo.byval_begin();
- for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i, ++FuncArg) {
+ for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
CCValAssign &VA = ArgLocs[i];
+ std::advance(FuncArg, Ins[i].OrigArgIndex - CurArgIdx);
+ CurArgIdx = Ins[i].OrigArgIndex;
EVT ValVT = VA.getValVT();
ISD::ArgFlagsTy Flags = Ins[i].Flags;
bool IsRegLoc = VA.isRegLoc();
if (Flags.isByVal()) {
assert(Flags.getByValSize() &&
"ByVal args of size 0 should have been ignored by front-end.");
- if (IsO32) {
- unsigned NumWords = (Flags.getByValSize() + 3) / 4;
- LastFI = MFI->CreateFixedObject(NumWords * 4, VA.getLocMemOffset(),
- true);
- SDValue FIN = DAG.getFrameIndex(LastFI, getPointerTy());
- InVals.push_back(FIN);
- ReadByValArg(MF, Chain, dl, OutChains, DAG, NumWords, FIN, VA, Flags,
- &*FuncArg);
- } else // N32/64
- LastFI = CopyMips64ByValRegs(MF, Chain, dl, OutChains, DAG, VA, Flags,
- MFI, IsRegLoc, InVals, MipsFI,
- getPointerTy(), &*FuncArg);
+ assert(ByValArg != MipsCCInfo.byval_end());
+ copyByValRegs(Chain, DL, OutChains, DAG, Flags, InVals, &*FuncArg,
+ MipsCCInfo, *ByValArg);
+ ++ByValArg;
continue;
}
const TargetRegisterClass *RC;
if (RegVT == MVT::i32)
- RC = &Mips::CPURegsRegClass;
+ RC = Subtarget->inMips16Mode()? &Mips::CPU16RegsRegClass :
+ &Mips::CPURegsRegClass;
else if (RegVT == MVT::i64)
RC = &Mips::CPU64RegsRegClass;
else if (RegVT == MVT::f32)
// Transform the arguments stored on
// physical registers into virtual ones
- unsigned Reg = AddLiveIn(DAG.getMachineFunction(), ArgReg, RC);
- SDValue ArgValue = DAG.getCopyFromReg(Chain, dl, Reg, RegVT);
+ unsigned Reg = addLiveIn(DAG.getMachineFunction(), ArgReg, RC);
+ SDValue ArgValue = DAG.getCopyFromReg(Chain, DL, Reg, RegVT);
// If this is an 8 or 16-bit value, it has been passed promoted
// to 32 bits. Insert an assert[sz]ext to capture this, then
else if (VA.getLocInfo() == CCValAssign::ZExt)
Opcode = ISD::AssertZext;
if (Opcode)
- ArgValue = DAG.getNode(Opcode, dl, RegVT, ArgValue,
+ ArgValue = DAG.getNode(Opcode, DL, RegVT, ArgValue,
DAG.getValueType(ValVT));
- ArgValue = DAG.getNode(ISD::TRUNCATE, dl, ValVT, ArgValue);
+ ArgValue = DAG.getNode(ISD::TRUNCATE, DL, ValVT, ArgValue);
}
- // Handle floating point arguments passed in integer registers.
+ // Handle floating point arguments passed in integer registers and
+ // long double arguments passed in floating point registers.
if ((RegVT == MVT::i32 && ValVT == MVT::f32) ||
- (RegVT == MVT::i64 && ValVT == MVT::f64))
- ArgValue = DAG.getNode(ISD::BITCAST, dl, ValVT, ArgValue);
+ (RegVT == MVT::i64 && ValVT == MVT::f64) ||
+ (RegVT == MVT::f64 && ValVT == MVT::i64))
+ ArgValue = DAG.getNode(ISD::BITCAST, DL, ValVT, ArgValue);
else if (IsO32 && RegVT == MVT::i32 && ValVT == MVT::f64) {
- unsigned Reg2 = AddLiveIn(DAG.getMachineFunction(),
+ unsigned Reg2 = addLiveIn(DAG.getMachineFunction(),
getNextIntArgReg(ArgReg), RC);
- SDValue ArgValue2 = DAG.getCopyFromReg(Chain, dl, Reg2, RegVT);
+ SDValue ArgValue2 = DAG.getCopyFromReg(Chain, DL, Reg2, RegVT);
if (!Subtarget->isLittle())
std::swap(ArgValue, ArgValue2);
- ArgValue = DAG.getNode(MipsISD::BuildPairF64, dl, MVT::f64,
+ ArgValue = DAG.getNode(MipsISD::BuildPairF64, DL, MVT::f64,
ArgValue, ArgValue2);
}
assert(VA.isMemLoc());
// The stack pointer offset is relative to the caller stack frame.
- LastFI = MFI->CreateFixedObject(ValVT.getSizeInBits()/8,
+ int FI = MFI->CreateFixedObject(ValVT.getSizeInBits()/8,
VA.getLocMemOffset(), true);
// Create load nodes to retrieve arguments from the stack
- SDValue FIN = DAG.getFrameIndex(LastFI, getPointerTy());
- InVals.push_back(DAG.getLoad(ValVT, dl, Chain, FIN,
- MachinePointerInfo::getFixedStack(LastFI),
+ SDValue FIN = DAG.getFrameIndex(FI, getPointerTy());
+ InVals.push_back(DAG.getLoad(ValVT, DL, Chain, FIN,
+ MachinePointerInfo::getFixedStack(FI),
false, false, false, 0));
}
}
if (DAG.getMachineFunction().getFunction()->hasStructRetAttr()) {
unsigned Reg = MipsFI->getSRetReturnReg();
if (!Reg) {
- Reg = MF.getRegInfo().createVirtualRegister(getRegClassFor(MVT::i32));
+ Reg = MF.getRegInfo().
+ createVirtualRegister(getRegClassFor(IsN64 ? MVT::i64 : MVT::i32));
MipsFI->setSRetReturnReg(Reg);
}
- SDValue Copy = DAG.getCopyToReg(DAG.getEntryNode(), dl, Reg, InVals[0]);
- Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Copy, Chain);
- }
-
- if (isVarArg) {
- unsigned NumOfRegs = IsO32 ? 4 : 8;
- const uint16_t *ArgRegs = IsO32 ? O32IntRegs : Mips64IntRegs;
- unsigned Idx = CCInfo.getFirstUnallocated(ArgRegs, NumOfRegs);
- int FirstRegSlotOffset = IsO32 ? 0 : -64 ; // offset of $a0's slot.
- const TargetRegisterClass *RC = IsO32 ?
- (const TargetRegisterClass*)&Mips::CPURegsRegClass :
- (const TargetRegisterClass*)&Mips::CPU64RegsRegClass;
- unsigned RegSize = RC->getSize();
- int RegSlotOffset = FirstRegSlotOffset + Idx * RegSize;
-
- // Offset of the first variable argument from stack pointer.
- int FirstVaArgOffset;
-
- if (IsO32 || (Idx == NumOfRegs)) {
- FirstVaArgOffset =
- (CCInfo.getNextStackOffset() + RegSize - 1) / RegSize * RegSize;
- } else
- FirstVaArgOffset = RegSlotOffset;
-
- // Record the frame index of the first variable argument
- // which is a value necessary to VASTART.
- LastFI = MFI->CreateFixedObject(RegSize, FirstVaArgOffset, true);
- MipsFI->setVarArgsFrameIndex(LastFI);
-
- // Copy the integer registers that have not been used for argument passing
- // to the argument register save area. For O32, the save area is allocated
- // in the caller's stack frame, while for N32/64, it is allocated in the
- // callee's stack frame.
- for (int StackOffset = RegSlotOffset;
- Idx < NumOfRegs; ++Idx, StackOffset += RegSize) {
- unsigned Reg = AddLiveIn(DAG.getMachineFunction(), ArgRegs[Idx], RC);
- SDValue ArgValue = DAG.getCopyFromReg(Chain, dl, Reg,
- MVT::getIntegerVT(RegSize * 8));
- LastFI = MFI->CreateFixedObject(RegSize, StackOffset, true);
- SDValue PtrOff = DAG.getFrameIndex(LastFI, getPointerTy());
- OutChains.push_back(DAG.getStore(Chain, dl, ArgValue, PtrOff,
- MachinePointerInfo(), false, false, 0));
- }
+ SDValue Copy = DAG.getCopyToReg(DAG.getEntryNode(), DL, Reg, InVals[0]);
+ Chain = DAG.getNode(ISD::TokenFactor, DL, MVT::Other, Copy, Chain);
}
- MipsFI->setLastInArgFI(LastFI);
+ if (IsVarArg)
+ writeVarArgRegs(OutChains, MipsCCInfo, Chain, DL, DAG);
// All stores are grouped in one node to allow the matching between
// the size of Ins and InVals. This only happens when on varg functions
if (!OutChains.empty()) {
OutChains.push_back(Chain);
- Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
+ Chain = DAG.getNode(ISD::TokenFactor, DL, MVT::Other,
&OutChains[0], OutChains.size());
}
bool
MipsTargetLowering::CanLowerReturn(CallingConv::ID CallConv,
- MachineFunction &MF, bool isVarArg,
+ MachineFunction &MF, bool IsVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
LLVMContext &Context) const {
SmallVector<CCValAssign, 16> RVLocs;
- CCState CCInfo(CallConv, isVarArg, MF, getTargetMachine(),
+ CCState CCInfo(CallConv, IsVarArg, MF, getTargetMachine(),
RVLocs, Context);
return CCInfo.CheckReturn(Outs, RetCC_Mips);
}
SDValue
MipsTargetLowering::LowerReturn(SDValue Chain,
- CallingConv::ID CallConv, bool isVarArg,
+ CallingConv::ID CallConv, bool IsVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
- DebugLoc dl, SelectionDAG &DAG) const {
-
+ DebugLoc DL, SelectionDAG &DAG) const {
// CCValAssign - represent the assignment of
// the return value to a location
SmallVector<CCValAssign, 16> RVLocs;
+ MachineFunction &MF = DAG.getMachineFunction();
// CCState - Info about the registers and stack slot.
- CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
- getTargetMachine(), RVLocs, *DAG.getContext());
+ CCState CCInfo(CallConv, IsVarArg, MF, getTargetMachine(), RVLocs,
+ *DAG.getContext());
+ MipsCC MipsCCInfo(CallConv, IsO32, CCInfo);
- // Analize return values.
- CCInfo.AnalyzeReturn(Outs, RetCC_Mips);
-
- // If this is the first return lowered for this function, add
- // the regs to the liveout set for the function.
- if (DAG.getMachineFunction().getRegInfo().liveout_empty()) {
- for (unsigned i = 0; i != RVLocs.size(); ++i)
- if (RVLocs[i].isRegLoc())
- DAG.getMachineFunction().getRegInfo().addLiveOut(RVLocs[i].getLocReg());
- }
+ // Analyze return values.
+ MipsCCInfo.analyzeReturn(Outs, getTargetMachine().Options.UseSoftFloat,
+ MF.getFunction()->getReturnType());
SDValue Flag;
+ SmallVector<SDValue, 4> RetOps(1, Chain);
// Copy the result values into the output registers.
for (unsigned i = 0; i != RVLocs.size(); ++i) {
+ SDValue Val = OutVals[i];
CCValAssign &VA = RVLocs[i];
assert(VA.isRegLoc() && "Can only return in registers!");
- Chain = DAG.getCopyToReg(Chain, dl, VA.getLocReg(), OutVals[i], Flag);
+ if (RVLocs[i].getValVT() != RVLocs[i].getLocVT())
+ Val = DAG.getNode(ISD::BITCAST, DL, RVLocs[i].getLocVT(), Val);
+
+ Chain = DAG.getCopyToReg(Chain, DL, VA.getLocReg(), Val, Flag);
- // guarantee that all emitted copies are
- // stuck together, avoiding something bad
+ // Guarantee that all emitted copies are stuck together with flags.
Flag = Chain.getValue(1);
+ RetOps.push_back(DAG.getRegister(VA.getLocReg(), VA.getLocVT()));
}
// The mips ABIs for returning structs by value requires that we copy
// the sret argument into $v0 for the return. We saved the argument into
// a virtual register in the entry block, so now we copy the value out
// and into $v0.
- if (DAG.getMachineFunction().getFunction()->hasStructRetAttr()) {
- MachineFunction &MF = DAG.getMachineFunction();
+ if (MF.getFunction()->hasStructRetAttr()) {
MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>();
unsigned Reg = MipsFI->getSRetReturnReg();
if (!Reg)
llvm_unreachable("sret virtual register not created in the entry block");
- SDValue Val = DAG.getCopyFromReg(Chain, dl, Reg, getPointerTy());
+ SDValue Val = DAG.getCopyFromReg(Chain, DL, Reg, getPointerTy());
+ unsigned V0 = IsN64 ? Mips::V0_64 : Mips::V0;
- Chain = DAG.getCopyToReg(Chain, dl, Mips::V0, Val, Flag);
+ Chain = DAG.getCopyToReg(Chain, DL, V0, Val, Flag);
Flag = Chain.getValue(1);
+ RetOps.push_back(DAG.getRegister(V0, getPointerTy()));
}
- // Return on Mips is always a "jr $ra"
+ RetOps[0] = Chain; // Update chain.
+
+ // Add the flag if we have it.
if (Flag.getNode())
- return DAG.getNode(MipsISD::Ret, dl, MVT::Other, Chain, Flag);
+ RetOps.push_back(Flag);
- // Return Void
- return DAG.getNode(MipsISD::Ret, dl, MVT::Other, Chain);
+ // Return on Mips is always a "jr $ra"
+ return DAG.getNode(MipsISD::Ret, DL, MVT::Other, &RetOps[0], RetOps.size());
}
//===----------------------------------------------------------------------===//
case 'l':
case 'x':
return C_RegisterClass;
+ case 'R':
+ return C_Memory;
}
}
return TargetLowering::getConstraintType(Constraint);
if (isa<ConstantInt>(CallOperandVal))
weight = CW_Constant;
break;
+ case 'R':
+ weight = CW_Memory;
+ break;
}
return weight;
}
TargetLowering::LowerAsmOperandForConstraint(Op, Constraint, Ops, DAG);
}
+bool
+MipsTargetLowering::isLegalAddressingMode(const AddrMode &AM, Type *Ty) const {
+ // No global is ever allowed as a base.
+ if (AM.BaseGV)
+ return false;
+
+ switch (AM.Scale) {
+ case 0: // "r+i" or just "i", depending on HasBaseReg.
+ break;
+ case 1:
+ if (!AM.HasBaseReg) // allow "r+i".
+ break;
+ return false; // disallow "r+r" or "r+r+i".
+ default:
+ return false;
+ }
+
+ return true;
+}
+
bool
MipsTargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const {
// The Mips target isn't yet aware of offsets.
}
EVT MipsTargetLowering::getOptimalMemOpType(uint64_t Size, unsigned DstAlign,
- unsigned SrcAlign, bool IsZeroVal,
+ unsigned SrcAlign,
+ bool IsMemset, bool ZeroMemset,
bool MemcpyStrSrc,
MachineFunction &MF) const {
if (Subtarget->hasMips64())
return TargetLowering::getJumpTableEncoding();
}
+
+/// This function returns true if CallSym is a long double emulation routine.
+static bool isF128SoftLibCall(const char *CallSym) {
+ const char *const LibCalls[] =
+ {"__addtf3", "__divtf3", "__eqtf2", "__extenddftf2", "__extendsftf2",
+ "__fixtfdi", "__fixtfsi", "__fixtfti", "__fixunstfdi", "__fixunstfsi",
+ "__fixunstfti", "__floatditf", "__floatsitf", "__floattitf",
+ "__floatunditf", "__floatunsitf", "__floatuntitf", "__getf2", "__gttf2",
+ "__letf2", "__lttf2", "__multf3", "__netf2", "__powitf2", "__subtf3",
+ "__trunctfdf2", "__trunctfsf2", "__unordtf2",
+ "ceill", "copysignl", "cosl", "exp2l", "expl", "floorl", "fmal", "fmodl",
+ "log10l", "log2l", "logl", "nearbyintl", "powl", "rintl", "sinl", "sqrtl",
+ "truncl"};
+
+ const char * const *End = LibCalls + array_lengthof(LibCalls);
+
+ // Check that LibCalls is sorted alphabetically.
+ MipsTargetLowering::LTStr Comp;
+
+#ifndef NDEBUG
+ for (const char * const *I = LibCalls; I < End - 1; ++I)
+ assert(Comp(*I, *(I + 1)));
+#endif
+
+ return std::binary_search(LibCalls, End, CallSym, Comp);
+}
+
+/// This function returns true if Ty is fp128 or i128 which was originally a
+/// fp128.
+static bool originalTypeIsF128(const Type *Ty, const SDNode *CallNode) {
+ if (Ty->isFP128Ty())
+ return true;
+
+ const ExternalSymbolSDNode *ES =
+ dyn_cast_or_null<const ExternalSymbolSDNode>(CallNode);
+
+ // If the Ty is i128 and the function being called is a long double emulation
+ // routine, then the original type is f128.
+ return (ES && Ty->isIntegerTy(128) && isF128SoftLibCall(ES->getSymbol()));
+}
+
+MipsTargetLowering::MipsCC::MipsCC(CallingConv::ID CC, bool IsO32_,
+ CCState &Info)
+ : CCInfo(Info), CallConv(CC), IsO32(IsO32_) {
+ // Pre-allocate reserved argument area.
+ CCInfo.AllocateStack(reservedArgArea(), 1);
+}
+
+void MipsTargetLowering::MipsCC::
+analyzeCallOperands(const SmallVectorImpl<ISD::OutputArg> &Args,
+ bool IsVarArg, bool IsSoftFloat, const SDNode *CallNode,
+ std::vector<ArgListEntry> &FuncArgs) {
+ assert((CallConv != CallingConv::Fast || !IsVarArg) &&
+ "CallingConv::Fast shouldn't be used for vararg functions.");
+
+ unsigned NumOpnds = Args.size();
+ llvm::CCAssignFn *FixedFn = fixedArgFn(), *VarFn = varArgFn();
+
+ for (unsigned I = 0; I != NumOpnds; ++I) {
+ MVT ArgVT = Args[I].VT;
+ ISD::ArgFlagsTy ArgFlags = Args[I].Flags;
+ bool R;
+
+ if (ArgFlags.isByVal()) {
+ handleByValArg(I, ArgVT, ArgVT, CCValAssign::Full, ArgFlags);
+ continue;
+ }
+
+ if (IsVarArg && !Args[I].IsFixed)
+ R = VarFn(I, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, CCInfo);
+ else {
+ MVT RegVT = getRegVT(ArgVT, FuncArgs[Args[I].OrigArgIndex].Ty, CallNode,
+ IsSoftFloat);
+ R = FixedFn(I, ArgVT, RegVT, CCValAssign::Full, ArgFlags, CCInfo);
+ }
+
+ if (R) {
+#ifndef NDEBUG
+ dbgs() << "Call operand #" << I << " has unhandled type "
+ << EVT(ArgVT).getEVTString();
+#endif
+ llvm_unreachable(0);
+ }
+ }
+}
+
+void MipsTargetLowering::MipsCC::
+analyzeFormalArguments(const SmallVectorImpl<ISD::InputArg> &Args,
+ bool IsSoftFloat, Function::const_arg_iterator FuncArg) {
+ unsigned NumArgs = Args.size();
+ llvm::CCAssignFn *FixedFn = fixedArgFn();
+ unsigned CurArgIdx = 0;
+
+ for (unsigned I = 0; I != NumArgs; ++I) {
+ MVT ArgVT = Args[I].VT;
+ ISD::ArgFlagsTy ArgFlags = Args[I].Flags;
+ std::advance(FuncArg, Args[I].OrigArgIndex - CurArgIdx);
+ CurArgIdx = Args[I].OrigArgIndex;
+
+ if (ArgFlags.isByVal()) {
+ handleByValArg(I, ArgVT, ArgVT, CCValAssign::Full, ArgFlags);
+ continue;
+ }
+
+ MVT RegVT = getRegVT(ArgVT, FuncArg->getType(), 0, IsSoftFloat);
+
+ if (!FixedFn(I, ArgVT, RegVT, CCValAssign::Full, ArgFlags, CCInfo))
+ continue;
+
+#ifndef NDEBUG
+ dbgs() << "Formal Arg #" << I << " has unhandled type "
+ << EVT(ArgVT).getEVTString();
+#endif
+ llvm_unreachable(0);
+ }
+}
+
+template<typename Ty>
+void MipsTargetLowering::MipsCC::
+analyzeReturn(const SmallVectorImpl<Ty> &RetVals, bool IsSoftFloat,
+ const SDNode *CallNode, const Type *RetTy) const {
+ CCAssignFn *Fn;
+
+ if (IsSoftFloat && originalTypeIsF128(RetTy, CallNode))
+ Fn = RetCC_F128Soft;
+ else
+ Fn = RetCC_Mips;
+
+ for (unsigned I = 0, E = RetVals.size(); I < E; ++I) {
+ MVT VT = RetVals[I].VT;
+ ISD::ArgFlagsTy Flags = RetVals[I].Flags;
+ MVT RegVT = this->getRegVT(VT, RetTy, CallNode, IsSoftFloat);
+
+ if (Fn(I, VT, RegVT, CCValAssign::Full, Flags, this->CCInfo)) {
+#ifndef NDEBUG
+ dbgs() << "Call result #" << I << " has unhandled type "
+ << EVT(VT).getEVTString() << '\n';
+#endif
+ llvm_unreachable(0);
+ }
+ }
+}
+
+void MipsTargetLowering::MipsCC::
+analyzeCallResult(const SmallVectorImpl<ISD::InputArg> &Ins, bool IsSoftFloat,
+ const SDNode *CallNode, const Type *RetTy) const {
+ analyzeReturn(Ins, IsSoftFloat, CallNode, RetTy);
+}
+
+void MipsTargetLowering::MipsCC::
+analyzeReturn(const SmallVectorImpl<ISD::OutputArg> &Outs, bool IsSoftFloat,
+ const Type *RetTy) const {
+ analyzeReturn(Outs, IsSoftFloat, 0, RetTy);
+}
+
+void
+MipsTargetLowering::MipsCC::handleByValArg(unsigned ValNo, MVT ValVT,
+ MVT LocVT,
+ CCValAssign::LocInfo LocInfo,
+ ISD::ArgFlagsTy ArgFlags) {
+ assert(ArgFlags.getByValSize() && "Byval argument's size shouldn't be 0.");
+
+ struct ByValArgInfo ByVal;
+ unsigned RegSize = regSize();
+ unsigned ByValSize = RoundUpToAlignment(ArgFlags.getByValSize(), RegSize);
+ unsigned Align = std::min(std::max(ArgFlags.getByValAlign(), RegSize),
+ RegSize * 2);
+
+ if (useRegsForByval())
+ allocateRegs(ByVal, ByValSize, Align);
+
+ // Allocate space on caller's stack.
+ ByVal.Address = CCInfo.AllocateStack(ByValSize - RegSize * ByVal.NumRegs,
+ Align);
+ CCInfo.addLoc(CCValAssign::getMem(ValNo, ValVT, ByVal.Address, LocVT,
+ LocInfo));
+ ByValArgs.push_back(ByVal);
+}
+
+unsigned MipsTargetLowering::MipsCC::numIntArgRegs() const {
+ return IsO32 ? array_lengthof(O32IntRegs) : array_lengthof(Mips64IntRegs);
+}
+
+unsigned MipsTargetLowering::MipsCC::reservedArgArea() const {
+ return (IsO32 && (CallConv != CallingConv::Fast)) ? 16 : 0;
+}
+
+const uint16_t *MipsTargetLowering::MipsCC::intArgRegs() const {
+ return IsO32 ? O32IntRegs : Mips64IntRegs;
+}
+
+llvm::CCAssignFn *MipsTargetLowering::MipsCC::fixedArgFn() const {
+ if (CallConv == CallingConv::Fast)
+ return CC_Mips_FastCC;
+
+ return IsO32 ? CC_MipsO32 : CC_MipsN;
+}
+
+llvm::CCAssignFn *MipsTargetLowering::MipsCC::varArgFn() const {
+ return IsO32 ? CC_MipsO32 : CC_MipsN_VarArg;
+}
+
+const uint16_t *MipsTargetLowering::MipsCC::shadowRegs() const {
+ return IsO32 ? O32IntRegs : Mips64DPRegs;
+}
+
+void MipsTargetLowering::MipsCC::allocateRegs(ByValArgInfo &ByVal,
+ unsigned ByValSize,
+ unsigned Align) {
+ unsigned RegSize = regSize(), NumIntArgRegs = numIntArgRegs();
+ const uint16_t *IntArgRegs = intArgRegs(), *ShadowRegs = shadowRegs();
+ assert(!(ByValSize % RegSize) && !(Align % RegSize) &&
+ "Byval argument's size and alignment should be a multiple of"
+ "RegSize.");
+
+ ByVal.FirstIdx = CCInfo.getFirstUnallocated(IntArgRegs, NumIntArgRegs);
+
+ // If Align > RegSize, the first arg register must be even.
+ if ((Align > RegSize) && (ByVal.FirstIdx % 2)) {
+ CCInfo.AllocateReg(IntArgRegs[ByVal.FirstIdx], ShadowRegs[ByVal.FirstIdx]);
+ ++ByVal.FirstIdx;
+ }
+
+ // Mark the registers allocated.
+ for (unsigned I = ByVal.FirstIdx; ByValSize && (I < NumIntArgRegs);
+ ByValSize -= RegSize, ++I, ++ByVal.NumRegs)
+ CCInfo.AllocateReg(IntArgRegs[I], ShadowRegs[I]);
+}
+
+MVT MipsTargetLowering::MipsCC::getRegVT(MVT VT, const Type *OrigTy,
+ const SDNode *CallNode,
+ bool IsSoftFloat) const {
+ if (IsSoftFloat || IsO32)
+ return VT;
+
+ // Check if the original type was fp128.
+ if (originalTypeIsF128(OrigTy, CallNode)) {
+ assert(VT == MVT::i64);
+ return MVT::f64;
+ }
+
+ return VT;
+}
+
+void MipsTargetLowering::
+copyByValRegs(SDValue Chain, DebugLoc DL, std::vector<SDValue> &OutChains,
+ SelectionDAG &DAG, const ISD::ArgFlagsTy &Flags,
+ SmallVectorImpl<SDValue> &InVals, const Argument *FuncArg,
+ const MipsCC &CC, const ByValArgInfo &ByVal) const {
+ MachineFunction &MF = DAG.getMachineFunction();
+ MachineFrameInfo *MFI = MF.getFrameInfo();
+ unsigned RegAreaSize = ByVal.NumRegs * CC.regSize();
+ unsigned FrameObjSize = std::max(Flags.getByValSize(), RegAreaSize);
+ int FrameObjOffset;
+
+ if (RegAreaSize)
+ FrameObjOffset = (int)CC.reservedArgArea() -
+ (int)((CC.numIntArgRegs() - ByVal.FirstIdx) * CC.regSize());
+ else
+ FrameObjOffset = ByVal.Address;
+
+ // Create frame object.
+ EVT PtrTy = getPointerTy();
+ int FI = MFI->CreateFixedObject(FrameObjSize, FrameObjOffset, true);
+ SDValue FIN = DAG.getFrameIndex(FI, PtrTy);
+ InVals.push_back(FIN);
+
+ if (!ByVal.NumRegs)
+ return;
+
+ // Copy arg registers.
+ MVT RegTy = MVT::getIntegerVT(CC.regSize() * 8);
+ const TargetRegisterClass *RC = getRegClassFor(RegTy);
+
+ for (unsigned I = 0; I < ByVal.NumRegs; ++I) {
+ unsigned ArgReg = CC.intArgRegs()[ByVal.FirstIdx + I];
+ unsigned VReg = addLiveIn(MF, ArgReg, RC);
+ unsigned Offset = I * CC.regSize();
+ SDValue StorePtr = DAG.getNode(ISD::ADD, DL, PtrTy, FIN,
+ DAG.getConstant(Offset, PtrTy));
+ SDValue Store = DAG.getStore(Chain, DL, DAG.getRegister(VReg, RegTy),
+ StorePtr, MachinePointerInfo(FuncArg, Offset),
+ false, false, 0);
+ OutChains.push_back(Store);
+ }
+}
+
+// Copy byVal arg to registers and stack.
+void MipsTargetLowering::
+passByValArg(SDValue Chain, DebugLoc DL,
+ std::deque< std::pair<unsigned, SDValue> > &RegsToPass,
+ SmallVector<SDValue, 8> &MemOpChains, SDValue StackPtr,
+ MachineFrameInfo *MFI, SelectionDAG &DAG, SDValue Arg,
+ const MipsCC &CC, const ByValArgInfo &ByVal,
+ const ISD::ArgFlagsTy &Flags, bool isLittle) const {
+ unsigned ByValSize = Flags.getByValSize();
+ unsigned Offset = 0; // Offset in # of bytes from the beginning of struct.
+ unsigned RegSize = CC.regSize();
+ unsigned Alignment = std::min(Flags.getByValAlign(), RegSize);
+ EVT PtrTy = getPointerTy(), RegTy = MVT::getIntegerVT(RegSize * 8);
+
+ if (ByVal.NumRegs) {
+ const uint16_t *ArgRegs = CC.intArgRegs();
+ bool LeftoverBytes = (ByVal.NumRegs * RegSize > ByValSize);
+ unsigned I = 0;
+
+ // Copy words to registers.
+ for (; I < ByVal.NumRegs - LeftoverBytes; ++I, Offset += RegSize) {
+ SDValue LoadPtr = DAG.getNode(ISD::ADD, DL, PtrTy, Arg,
+ DAG.getConstant(Offset, PtrTy));
+ SDValue LoadVal = DAG.getLoad(RegTy, DL, Chain, LoadPtr,
+ MachinePointerInfo(), false, false, false,
+ Alignment);
+ MemOpChains.push_back(LoadVal.getValue(1));
+ unsigned ArgReg = ArgRegs[ByVal.FirstIdx + I];
+ RegsToPass.push_back(std::make_pair(ArgReg, LoadVal));
+ }
+
+ // Return if the struct has been fully copied.
+ if (ByValSize == Offset)
+ return;
+
+ // Copy the remainder of the byval argument with sub-word loads and shifts.
+ if (LeftoverBytes) {
+ assert((ByValSize > Offset) && (ByValSize < Offset + RegSize) &&
+ "Size of the remainder should be smaller than RegSize.");
+ SDValue Val;
+
+ for (unsigned LoadSize = RegSize / 2, TotalSizeLoaded = 0;
+ Offset < ByValSize; LoadSize /= 2) {
+ unsigned RemSize = ByValSize - Offset;
+
+ if (RemSize < LoadSize)
+ continue;
+
+ // Load subword.
+ SDValue LoadPtr = DAG.getNode(ISD::ADD, DL, PtrTy, Arg,
+ DAG.getConstant(Offset, PtrTy));
+ SDValue LoadVal =
+ DAG.getExtLoad(ISD::ZEXTLOAD, DL, RegTy, Chain, LoadPtr,
+ MachinePointerInfo(), MVT::getIntegerVT(LoadSize * 8),
+ false, false, Alignment);
+ MemOpChains.push_back(LoadVal.getValue(1));
+
+ // Shift the loaded value.
+ unsigned Shamt;
+
+ if (isLittle)
+ Shamt = TotalSizeLoaded;
+ else
+ Shamt = (RegSize - (TotalSizeLoaded + LoadSize)) * 8;
+
+ SDValue Shift = DAG.getNode(ISD::SHL, DL, RegTy, LoadVal,
+ DAG.getConstant(Shamt, MVT::i32));
+
+ if (Val.getNode())
+ Val = DAG.getNode(ISD::OR, DL, RegTy, Val, Shift);
+ else
+ Val = Shift;
+
+ Offset += LoadSize;
+ TotalSizeLoaded += LoadSize;
+ Alignment = std::min(Alignment, LoadSize);
+ }
+
+ unsigned ArgReg = ArgRegs[ByVal.FirstIdx + I];
+ RegsToPass.push_back(std::make_pair(ArgReg, Val));
+ return;
+ }
+ }
+
+ // Copy remainder of byval arg to it with memcpy.
+ unsigned MemCpySize = ByValSize - Offset;
+ SDValue Src = DAG.getNode(ISD::ADD, DL, PtrTy, Arg,
+ DAG.getConstant(Offset, PtrTy));
+ SDValue Dst = DAG.getNode(ISD::ADD, DL, PtrTy, StackPtr,
+ DAG.getIntPtrConstant(ByVal.Address));
+ Chain = DAG.getMemcpy(Chain, DL, Dst, Src,
+ DAG.getConstant(MemCpySize, PtrTy), Alignment,
+ /*isVolatile=*/false, /*AlwaysInline=*/false,
+ MachinePointerInfo(0), MachinePointerInfo(0));
+ MemOpChains.push_back(Chain);
+}
+
+void
+MipsTargetLowering::writeVarArgRegs(std::vector<SDValue> &OutChains,
+ const MipsCC &CC, SDValue Chain,
+ DebugLoc DL, SelectionDAG &DAG) const {
+ unsigned NumRegs = CC.numIntArgRegs();
+ const uint16_t *ArgRegs = CC.intArgRegs();
+ const CCState &CCInfo = CC.getCCInfo();
+ unsigned Idx = CCInfo.getFirstUnallocated(ArgRegs, NumRegs);
+ unsigned RegSize = CC.regSize();
+ MVT RegTy = MVT::getIntegerVT(RegSize * 8);
+ const TargetRegisterClass *RC = getRegClassFor(RegTy);
+ MachineFunction &MF = DAG.getMachineFunction();
+ MachineFrameInfo *MFI = MF.getFrameInfo();
+ MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>();
+
+ // Offset of the first variable argument from stack pointer.
+ int VaArgOffset;
+
+ if (NumRegs == Idx)
+ VaArgOffset = RoundUpToAlignment(CCInfo.getNextStackOffset(), RegSize);
+ else
+ VaArgOffset =
+ (int)CC.reservedArgArea() - (int)(RegSize * (NumRegs - Idx));
+
+ // Record the frame index of the first variable argument
+ // which is a value necessary to VASTART.
+ int FI = MFI->CreateFixedObject(RegSize, VaArgOffset, true);
+ MipsFI->setVarArgsFrameIndex(FI);
+
+ // Copy the integer registers that have not been used for argument passing
+ // to the argument register save area. For O32, the save area is allocated
+ // in the caller's stack frame, while for N32/64, it is allocated in the
+ // callee's stack frame.
+ for (unsigned I = Idx; I < NumRegs; ++I, VaArgOffset += RegSize) {
+ unsigned Reg = addLiveIn(MF, ArgRegs[I], RC);
+ SDValue ArgValue = DAG.getCopyFromReg(Chain, DL, Reg, RegTy);
+ FI = MFI->CreateFixedObject(RegSize, VaArgOffset, true);
+ SDValue PtrOff = DAG.getFrameIndex(FI, getPointerTy());
+ SDValue Store = DAG.getStore(Chain, DL, ArgValue, PtrOff,
+ MachinePointerInfo(), false, false, 0);
+ cast<StoreSDNode>(Store.getNode())->getMemOperand()->setValue(0);
+ OutChains.push_back(Store);
+ }
+}
projects / oota-llvm.git / blobdiff