//===----------------------------------------------------------------------===//
#include "SparcISelLowering.h"
+#include "SparcMachineFunctionInfo.h"
#include "SparcTargetMachine.h"
-#include "llvm/Function.h"
+#include "MCTargetDesc/SparcBaseInfo.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/SelectionDAG.h"
-#include "llvm/ADT/VectorExtras.h"
+#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/Module.h"
#include "llvm/Support/ErrorHandling.h"
using namespace llvm;
// Calling Convention Implementation
//===----------------------------------------------------------------------===//
+static bool CC_Sparc_Assign_SRet(unsigned &ValNo, MVT &ValVT,
+ MVT &LocVT, CCValAssign::LocInfo &LocInfo,
+ ISD::ArgFlagsTy &ArgFlags, CCState &State)
+{
+ assert (ArgFlags.isSRet());
+
+ //Assign SRet argument
+ State.addLoc(CCValAssign::getCustomMem(ValNo, ValVT,
+ 0,
+ LocVT, LocInfo));
+ return true;
+}
+
+static bool CC_Sparc_Assign_f64(unsigned &ValNo, MVT &ValVT,
+ MVT &LocVT, CCValAssign::LocInfo &LocInfo,
+ ISD::ArgFlagsTy &ArgFlags, CCState &State)
+{
+ static const uint16_t RegList[] = {
+ SP::I0, SP::I1, SP::I2, SP::I3, SP::I4, SP::I5
+ };
+ //Try to get first reg
+ if (unsigned Reg = State.AllocateReg(RegList, 6)) {
+ State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, Reg, LocVT, LocInfo));
+ } else {
+ //Assign whole thing in stack
+ State.addLoc(CCValAssign::getCustomMem(ValNo, ValVT,
+ State.AllocateStack(8,4),
+ LocVT, LocInfo));
+ return true;
+ }
+
+ //Try to get second reg
+ if (unsigned Reg = State.AllocateReg(RegList, 6))
+ State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, Reg, LocVT, LocInfo));
+ else
+ State.addLoc(CCValAssign::getCustomMem(ValNo, ValVT,
+ State.AllocateStack(4,4),
+ LocVT, LocInfo));
+ return true;
+}
+
+// Allocate a full-sized argument for the 64-bit ABI.
+static bool CC_Sparc64_Full(unsigned &ValNo, MVT &ValVT,
+ MVT &LocVT, CCValAssign::LocInfo &LocInfo,
+ ISD::ArgFlagsTy &ArgFlags, CCState &State) {
+ assert((LocVT == MVT::f32 || LocVT.getSizeInBits() == 64) &&
+ "Can't handle non-64 bits locations");
+
+ // Stack space is allocated for all arguments starting from [%fp+BIAS+128].
+ unsigned Offset = State.AllocateStack(8, 8);
+ unsigned Reg = 0;
+
+ if (LocVT == MVT::i64 && Offset < 6*8)
+ // Promote integers to %i0-%i5.
+ Reg = SP::I0 + Offset/8;
+ else if (LocVT == MVT::f64 && Offset < 16*8)
+ // Promote doubles to %d0-%d30. (Which LLVM calls D0-D15).
+ Reg = SP::D0 + Offset/8;
+ else if (LocVT == MVT::f32 && Offset < 16*8)
+ // Promote floats to %f1, %f3, ...
+ Reg = SP::F1 + Offset/4;
+
+ // Promote to register when possible, otherwise use the stack slot.
+ if (Reg) {
+ State.addLoc(CCValAssign::getReg(ValNo, ValVT, Reg, LocVT, LocInfo));
+ return true;
+ }
+
+ // This argument goes on the stack in an 8-byte slot.
+ // When passing floats, LocVT is smaller than 8 bytes. Adjust the offset to
+ // the right-aligned float. The first 4 bytes of the stack slot are undefined.
+ if (LocVT == MVT::f32)
+ Offset += 4;
+
+ State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo));
+ return true;
+}
+
+// Allocate a half-sized argument for the 64-bit ABI.
+//
+// This is used when passing { float, int } structs by value in registers.
+static bool CC_Sparc64_Half(unsigned &ValNo, MVT &ValVT,
+ MVT &LocVT, CCValAssign::LocInfo &LocInfo,
+ ISD::ArgFlagsTy &ArgFlags, CCState &State) {
+ assert(LocVT.getSizeInBits() == 32 && "Can't handle non-32 bits locations");
+ unsigned Offset = State.AllocateStack(4, 4);
+
+ if (LocVT == MVT::f32 && Offset < 16*8) {
+ // Promote floats to %f0-%f31.
+ State.addLoc(CCValAssign::getReg(ValNo, ValVT, SP::F0 + Offset/4,
+ LocVT, LocInfo));
+ return true;
+ }
+
+ if (LocVT == MVT::i32 && Offset < 6*8) {
+ // Promote integers to %i0-%i5, using half the register.
+ unsigned Reg = SP::I0 + Offset/8;
+ LocVT = MVT::i64;
+ LocInfo = CCValAssign::AExt;
+
+ // Set the Custom bit if this i32 goes in the high bits of a register.
+ if (Offset % 8 == 0)
+ State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, Reg,
+ LocVT, LocInfo));
+ else
+ State.addLoc(CCValAssign::getReg(ValNo, ValVT, Reg, LocVT, LocInfo));
+ return true;
+ }
+
+ State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo));
+ return true;
+}
+
#include "SparcGenCallingConv.inc"
-static SDValue LowerRET(SDValue Op, SelectionDAG &DAG) {
+// The calling conventions in SparcCallingConv.td are described in terms of the
+// callee's register window. This function translates registers to the
+// corresponding caller window %o register.
+static unsigned toCallerWindow(unsigned Reg) {
+ assert(SP::I0 + 7 == SP::I7 && SP::O0 + 7 == SP::O7 && "Unexpected enum");
+ if (Reg >= SP::I0 && Reg <= SP::I7)
+ return Reg - SP::I0 + SP::O0;
+ return Reg;
+}
+
+SDValue
+SparcTargetLowering::LowerReturn(SDValue Chain,
+ CallingConv::ID CallConv, bool IsVarArg,
+ const SmallVectorImpl<ISD::OutputArg> &Outs,
+ const SmallVectorImpl<SDValue> &OutVals,
+ DebugLoc DL, SelectionDAG &DAG) const {
+ if (Subtarget->is64Bit())
+ return LowerReturn_64(Chain, CallConv, IsVarArg, Outs, OutVals, DL, DAG);
+ return LowerReturn_32(Chain, CallConv, IsVarArg, Outs, OutVals, DL, DAG);
+}
+
+SDValue
+SparcTargetLowering::LowerReturn_32(SDValue Chain,
+ CallingConv::ID CallConv, bool IsVarArg,
+ const SmallVectorImpl<ISD::OutputArg> &Outs,
+ const SmallVectorImpl<SDValue> &OutVals,
+ DebugLoc DL, SelectionDAG &DAG) const {
+ MachineFunction &MF = DAG.getMachineFunction();
+
// CCValAssign - represent the assignment of the return value to locations.
SmallVector<CCValAssign, 16> RVLocs;
- unsigned CC = DAG.getMachineFunction().getFunction()->getCallingConv();
- bool isVarArg = DAG.getMachineFunction().getFunction()->isVarArg();
- DebugLoc dl = Op.getDebugLoc();
// CCState - Info about the registers and stack slot.
- CCState CCInfo(CC, isVarArg, DAG.getTarget(), RVLocs, DAG.getContext());
+ CCState CCInfo(CallConv, IsVarArg, DAG.getMachineFunction(),
+ DAG.getTarget(), RVLocs, *DAG.getContext());
- // Analize return values of ISD::RET
- CCInfo.AnalyzeReturn(Op.getNode(), RetCC_Sparc32);
+ // Analyze return values.
+ CCInfo.AnalyzeReturn(Outs, RetCC_Sparc32);
+
+ SDValue Flag;
+ SmallVector<SDValue, 4> RetOps(1, Chain);
+ // Make room for the return address offset.
+ RetOps.push_back(SDValue());
+
+ // Copy the result values into the output registers.
+ for (unsigned i = 0; i != RVLocs.size(); ++i) {
+ CCValAssign &VA = RVLocs[i];
+ assert(VA.isRegLoc() && "Can only return in registers!");
+
+ Chain = DAG.getCopyToReg(Chain, DL, VA.getLocReg(),
+ OutVals[i], Flag);
+
+ // Guarantee that all emitted copies are stuck together with flags.
+ Flag = Chain.getValue(1);
+ RetOps.push_back(DAG.getRegister(VA.getLocReg(), VA.getLocVT()));
+ }
- // 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());
+ unsigned RetAddrOffset = 8; //Call Inst + Delay Slot
+ // If the function returns a struct, copy the SRetReturnReg to I0
+ if (MF.getFunction()->hasStructRetAttr()) {
+ SparcMachineFunctionInfo *SFI = MF.getInfo<SparcMachineFunctionInfo>();
+ unsigned Reg = SFI->getSRetReturnReg();
+ if (!Reg)
+ llvm_unreachable("sret virtual register not created in the entry block");
+ SDValue Val = DAG.getCopyFromReg(Chain, DL, Reg, getPointerTy());
+ Chain = DAG.getCopyToReg(Chain, DL, SP::I0, Val, Flag);
+ Flag = Chain.getValue(1);
+ RetOps.push_back(DAG.getRegister(SP::I0, getPointerTy()));
+ RetAddrOffset = 12; // CallInst + Delay Slot + Unimp
}
- SDValue Chain = Op.getOperand(0);
+ RetOps[0] = Chain; // Update chain.
+ RetOps[1] = DAG.getConstant(RetAddrOffset, MVT::i32);
+
+ // Add the flag if we have it.
+ if (Flag.getNode())
+ RetOps.push_back(Flag);
+
+ return DAG.getNode(SPISD::RET_FLAG, DL, MVT::Other,
+ &RetOps[0], RetOps.size());
+}
+
+// Lower return values for the 64-bit ABI.
+// Return values are passed the exactly the same way as function arguments.
+SDValue
+SparcTargetLowering::LowerReturn_64(SDValue Chain,
+ CallingConv::ID CallConv, bool IsVarArg,
+ const SmallVectorImpl<ISD::OutputArg> &Outs,
+ const SmallVectorImpl<SDValue> &OutVals,
+ DebugLoc DL, SelectionDAG &DAG) const {
+ // CCValAssign - represent the assignment of the return value to locations.
+ SmallVector<CCValAssign, 16> RVLocs;
+
+ // CCState - Info about the registers and stack slot.
+ CCState CCInfo(CallConv, IsVarArg, DAG.getMachineFunction(),
+ DAG.getTarget(), RVLocs, *DAG.getContext());
+
+ // Analyze return values.
+ CCInfo.AnalyzeReturn(Outs, CC_Sparc64);
+
SDValue Flag;
+ SmallVector<SDValue, 4> RetOps(1, Chain);
+
+ // The second operand on the return instruction is the return address offset.
+ // The return address is always %i7+8 with the 64-bit ABI.
+ RetOps.push_back(DAG.getConstant(8, MVT::i32));
// Copy the result values into the output registers.
for (unsigned i = 0; i != RVLocs.size(); ++i) {
CCValAssign &VA = RVLocs[i];
assert(VA.isRegLoc() && "Can only return in registers!");
+ SDValue OutVal = OutVals[i];
- // ISD::RET => ret chain, (regnum1,val1), ...
- // So i*2+1 index only the regnums.
- Chain = DAG.getCopyToReg(Chain, dl, VA.getLocReg(),
- Op.getOperand(i*2+1), Flag);
+ // Integer return values must be sign or zero extended by the callee.
+ switch (VA.getLocInfo()) {
+ case CCValAssign::SExt:
+ OutVal = DAG.getNode(ISD::SIGN_EXTEND, DL, VA.getLocVT(), OutVal);
+ break;
+ case CCValAssign::ZExt:
+ OutVal = DAG.getNode(ISD::ZERO_EXTEND, DL, VA.getLocVT(), OutVal);
+ break;
+ case CCValAssign::AExt:
+ OutVal = DAG.getNode(ISD::ANY_EXTEND, DL, VA.getLocVT(), OutVal);
+ default:
+ break;
+ }
+
+ // The custom bit on an i32 return value indicates that it should be passed
+ // in the high bits of the register.
+ if (VA.getValVT() == MVT::i32 && VA.needsCustom()) {
+ OutVal = DAG.getNode(ISD::SHL, DL, MVT::i64, OutVal,
+ DAG.getConstant(32, MVT::i32));
+
+ // The next value may go in the low bits of the same register.
+ // Handle both at once.
+ if (i+1 < RVLocs.size() && RVLocs[i+1].getLocReg() == VA.getLocReg()) {
+ SDValue NV = DAG.getNode(ISD::ZERO_EXTEND, DL, MVT::i64, OutVals[i+1]);
+ OutVal = DAG.getNode(ISD::OR, DL, MVT::i64, OutVal, NV);
+ // Skip the next value, it's already done.
+ ++i;
+ }
+ }
+
+ Chain = DAG.getCopyToReg(Chain, DL, VA.getLocReg(), OutVal, Flag);
// Guarantee that all emitted copies are stuck together with flags.
Flag = Chain.getValue(1);
+ RetOps.push_back(DAG.getRegister(VA.getLocReg(), VA.getLocVT()));
}
+ RetOps[0] = Chain; // Update chain.
+
+ // Add the flag if we have it.
if (Flag.getNode())
- return DAG.getNode(SPISD::RET_FLAG, dl, MVT::Other, Chain, Flag);
- return DAG.getNode(SPISD::RET_FLAG, dl, MVT::Other, Chain);
+ RetOps.push_back(Flag);
+
+ return DAG.getNode(SPISD::RET_FLAG, DL, MVT::Other,
+ &RetOps[0], RetOps.size());
}
-/// LowerArguments - V8 uses a very simple ABI, where all values are passed in
-/// either one or two GPRs, including FP values. TODO: we should pass FP values
-/// in FP registers for fastcc functions.
-SDValue
-SparcTargetLowering::LowerFORMAL_ARGUMENTS(SDValue Op,
- SelectionDAG &DAG) {
+SDValue SparcTargetLowering::
+LowerFormalArguments(SDValue Chain,
+ CallingConv::ID CallConv,
+ bool IsVarArg,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ DebugLoc DL,
+ SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals) const {
+ if (Subtarget->is64Bit())
+ return LowerFormalArguments_64(Chain, CallConv, IsVarArg, Ins,
+ DL, DAG, InVals);
+ return LowerFormalArguments_32(Chain, CallConv, IsVarArg, Ins,
+ DL, DAG, InVals);
+}
+
+/// LowerFormalArguments32 - V8 uses a very simple ABI, where all values are
+/// passed in either one or two GPRs, including FP values. TODO: we should
+/// pass FP values in FP registers for fastcc functions.
+SDValue SparcTargetLowering::
+LowerFormalArguments_32(SDValue Chain,
+ CallingConv::ID CallConv,
+ bool isVarArg,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ DebugLoc dl,
+ SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals) const {
MachineFunction &MF = DAG.getMachineFunction();
MachineRegisterInfo &RegInfo = MF.getRegInfo();
- SDValue Root = Op.getOperand(0);
- bool isVarArg = cast<ConstantSDNode>(Op.getOperand(2))->getZExtValue() != 0;
- unsigned CC = MF.getFunction()->getCallingConv();
- DebugLoc dl = Op.getDebugLoc();
+ SparcMachineFunctionInfo *FuncInfo = MF.getInfo<SparcMachineFunctionInfo>();
// Assign locations to all of the incoming arguments.
SmallVector<CCValAssign, 16> ArgLocs;
- CCState CCInfo(CC, isVarArg, getTargetMachine(), ArgLocs, DAG.getContext());
- CCInfo.AnalyzeFormalArguments(Op.getNode(), CC_Sparc32);
+ CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
+ getTargetMachine(), ArgLocs, *DAG.getContext());
+ CCInfo.AnalyzeFormalArguments(Ins, CC_Sparc32);
- static const unsigned ArgRegs[] = {
- SP::I0, SP::I1, SP::I2, SP::I3, SP::I4, SP::I5
- };
- const unsigned *CurArgReg = ArgRegs, *ArgRegEnd = ArgRegs+6;
- unsigned ArgOffset = 68;
+ const unsigned StackOffset = 92;
- SmallVector<SDValue, 16> ArgValues;
for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
- SDValue ArgValue;
CCValAssign &VA = ArgLocs[i];
- // FIXME: We ignore the register assignments of AnalyzeFormalArguments
- // because it doesn't know how to split a double into two i32 registers.
- MVT ObjectVT = VA.getValVT();
- switch (ObjectVT.getSimpleVT()) {
- default: llvm_unreachable("Unhandled argument type!");
- case MVT::i1:
- case MVT::i8:
- case MVT::i16:
- case MVT::i32:
- if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
- unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
- MF.getRegInfo().addLiveIn(*CurArgReg++, VReg);
- SDValue Arg = DAG.getCopyFromReg(Root, dl, VReg, MVT::i32);
- if (ObjectVT != MVT::i32) {
- unsigned AssertOp = ISD::AssertSext;
- Arg = DAG.getNode(AssertOp, dl, MVT::i32, Arg,
- DAG.getValueType(ObjectVT));
- Arg = DAG.getNode(ISD::TRUNCATE, dl, ObjectVT, Arg);
- }
- ArgValues.push_back(Arg);
- } else {
- int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset);
- SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
- SDValue Load;
- if (ObjectVT == MVT::i32) {
- Load = DAG.getLoad(MVT::i32, dl, Root, FIPtr, NULL, 0);
- } else {
- ISD::LoadExtType LoadOp = ISD::SEXTLOAD;
-
- // Sparc is big endian, so add an offset based on the ObjectVT.
- unsigned Offset = 4-std::max(1U, ObjectVT.getSizeInBits()/8);
- FIPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, FIPtr,
- DAG.getConstant(Offset, MVT::i32));
- Load = DAG.getExtLoad(LoadOp, dl, MVT::i32, Root, FIPtr,
- NULL, 0, ObjectVT);
- Load = DAG.getNode(ISD::TRUNCATE, dl, ObjectVT, Load);
- }
- ArgValues.push_back(Load);
- }
- ArgOffset += 4;
- break;
- case MVT::f32:
- if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
- // FP value is passed in an integer register.
- unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
- MF.getRegInfo().addLiveIn(*CurArgReg++, VReg);
- SDValue Arg = DAG.getCopyFromReg(Root, dl, VReg, MVT::i32);
-
- Arg = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::f32, Arg);
- ArgValues.push_back(Arg);
- } else {
- int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset);
- SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
- SDValue Load = DAG.getLoad(MVT::f32, dl, Root, FIPtr, NULL, 0);
- ArgValues.push_back(Load);
- }
- ArgOffset += 4;
- break;
+ if (i == 0 && Ins[i].Flags.isSRet()) {
+ //Get SRet from [%fp+64]
+ int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, 64, true);
+ SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
+ SDValue Arg = DAG.getLoad(MVT::i32, dl, Chain, FIPtr,
+ MachinePointerInfo(),
+ false, false, false, 0);
+ InVals.push_back(Arg);
+ continue;
+ }
- case MVT::i64:
- case MVT::f64:
- {
- SDValue HiVal;
- if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
- unsigned VRegHi = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
- MF.getRegInfo().addLiveIn(*CurArgReg++, VRegHi);
- HiVal = DAG.getCopyFromReg(Root, dl, VRegHi, MVT::i32);
- } else {
- int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset);
- SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
- HiVal = DAG.getLoad(MVT::i32, dl, Root, FIPtr, NULL, 0);
- }
+ if (VA.isRegLoc()) {
+ if (VA.needsCustom()) {
+ assert(VA.getLocVT() == MVT::f64);
+ unsigned VRegHi = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
+ MF.getRegInfo().addLiveIn(VA.getLocReg(), VRegHi);
+ SDValue HiVal = DAG.getCopyFromReg(Chain, dl, VRegHi, MVT::i32);
+
+ assert(i+1 < e);
+ CCValAssign &NextVA = ArgLocs[++i];
SDValue LoVal;
- if (CurArgReg < ArgRegEnd) { // Lives in an incoming GPR
- unsigned VRegLo = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
- MF.getRegInfo().addLiveIn(*CurArgReg++, VRegLo);
- LoVal = DAG.getCopyFromReg(Root, dl, VRegLo, MVT::i32);
- } else {
- int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset+4);
+ if (NextVA.isMemLoc()) {
+ int FrameIdx = MF.getFrameInfo()->
+ CreateFixedObject(4, StackOffset+NextVA.getLocMemOffset(),true);
SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
- LoVal = DAG.getLoad(MVT::i32, dl, Root, FIPtr, NULL, 0);
+ LoVal = DAG.getLoad(MVT::i32, dl, Chain, FIPtr,
+ MachinePointerInfo(),
+ false, false, false, 0);
+ } else {
+ unsigned loReg = MF.addLiveIn(NextVA.getLocReg(),
+ &SP::IntRegsRegClass);
+ LoVal = DAG.getCopyFromReg(Chain, dl, loReg, MVT::i32);
}
-
- // Compose the two halves together into an i64 unit.
SDValue WholeValue =
DAG.getNode(ISD::BUILD_PAIR, dl, MVT::i64, LoVal, HiVal);
+ WholeValue = DAG.getNode(ISD::BITCAST, dl, MVT::f64, WholeValue);
+ InVals.push_back(WholeValue);
+ continue;
+ }
+ unsigned VReg = RegInfo.createVirtualRegister(&SP::IntRegsRegClass);
+ MF.getRegInfo().addLiveIn(VA.getLocReg(), VReg);
+ SDValue Arg = DAG.getCopyFromReg(Chain, dl, VReg, MVT::i32);
+ if (VA.getLocVT() == MVT::f32)
+ Arg = DAG.getNode(ISD::BITCAST, dl, MVT::f32, Arg);
+ else if (VA.getLocVT() != MVT::i32) {
+ Arg = DAG.getNode(ISD::AssertSext, dl, MVT::i32, Arg,
+ DAG.getValueType(VA.getLocVT()));
+ Arg = DAG.getNode(ISD::TRUNCATE, dl, VA.getLocVT(), Arg);
+ }
+ InVals.push_back(Arg);
+ continue;
+ }
- // If we want a double, do a bit convert.
- if (ObjectVT == MVT::f64)
- WholeValue = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::f64, WholeValue);
+ assert(VA.isMemLoc());
- ArgValues.push_back(WholeValue);
+ unsigned Offset = VA.getLocMemOffset()+StackOffset;
+
+ if (VA.needsCustom()) {
+ assert(VA.getValVT() == MVT::f64);
+ //If it is double-word aligned, just load.
+ if (Offset % 8 == 0) {
+ int FI = MF.getFrameInfo()->CreateFixedObject(8,
+ Offset,
+ true);
+ SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
+ SDValue Load = DAG.getLoad(VA.getValVT(), dl, Chain, FIPtr,
+ MachinePointerInfo(),
+ false,false, false, 0);
+ InVals.push_back(Load);
+ continue;
}
- ArgOffset += 8;
- break;
+
+ int FI = MF.getFrameInfo()->CreateFixedObject(4,
+ Offset,
+ true);
+ SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
+ SDValue HiVal = DAG.getLoad(MVT::i32, dl, Chain, FIPtr,
+ MachinePointerInfo(),
+ false, false, false, 0);
+ int FI2 = MF.getFrameInfo()->CreateFixedObject(4,
+ Offset+4,
+ true);
+ SDValue FIPtr2 = DAG.getFrameIndex(FI2, getPointerTy());
+
+ SDValue LoVal = DAG.getLoad(MVT::i32, dl, Chain, FIPtr2,
+ MachinePointerInfo(),
+ false, false, false, 0);
+
+ SDValue WholeValue =
+ DAG.getNode(ISD::BUILD_PAIR, dl, MVT::i64, LoVal, HiVal);
+ WholeValue = DAG.getNode(ISD::BITCAST, dl, MVT::f64, WholeValue);
+ InVals.push_back(WholeValue);
+ continue;
+ }
+
+ int FI = MF.getFrameInfo()->CreateFixedObject(4,
+ Offset,
+ true);
+ SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
+ SDValue Load ;
+ if (VA.getValVT() == MVT::i32 || VA.getValVT() == MVT::f32) {
+ Load = DAG.getLoad(VA.getValVT(), dl, Chain, FIPtr,
+ MachinePointerInfo(),
+ false, false, false, 0);
+ } else {
+ ISD::LoadExtType LoadOp = ISD::SEXTLOAD;
+ // Sparc is big endian, so add an offset based on the ObjectVT.
+ unsigned Offset = 4-std::max(1U, VA.getValVT().getSizeInBits()/8);
+ FIPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, FIPtr,
+ DAG.getConstant(Offset, MVT::i32));
+ Load = DAG.getExtLoad(LoadOp, dl, MVT::i32, Chain, FIPtr,
+ MachinePointerInfo(),
+ VA.getValVT(), false, false,0);
+ Load = DAG.getNode(ISD::TRUNCATE, dl, VA.getValVT(), Load);
}
+ InVals.push_back(Load);
+ }
+
+ if (MF.getFunction()->hasStructRetAttr()) {
+ //Copy the SRet Argument to SRetReturnReg
+ SparcMachineFunctionInfo *SFI = MF.getInfo<SparcMachineFunctionInfo>();
+ unsigned Reg = SFI->getSRetReturnReg();
+ if (!Reg) {
+ Reg = MF.getRegInfo().createVirtualRegister(&SP::IntRegsRegClass);
+ SFI->setSRetReturnReg(Reg);
+ }
+ SDValue Copy = DAG.getCopyToReg(DAG.getEntryNode(), dl, Reg, InVals[0]);
+ Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Copy, Chain);
}
// Store remaining ArgRegs to the stack if this is a varargs function.
if (isVarArg) {
+ static const uint16_t ArgRegs[] = {
+ SP::I0, SP::I1, SP::I2, SP::I3, SP::I4, SP::I5
+ };
+ unsigned NumAllocated = CCInfo.getFirstUnallocated(ArgRegs, 6);
+ const uint16_t *CurArgReg = ArgRegs+NumAllocated, *ArgRegEnd = ArgRegs+6;
+ unsigned ArgOffset = CCInfo.getNextStackOffset();
+ if (NumAllocated == 6)
+ ArgOffset += StackOffset;
+ else {
+ assert(!ArgOffset);
+ ArgOffset = 68+4*NumAllocated;
+ }
+
// Remember the vararg offset for the va_start implementation.
- VarArgsFrameOffset = ArgOffset;
+ FuncInfo->setVarArgsFrameOffset(ArgOffset);
std::vector<SDValue> OutChains;
MF.getRegInfo().addLiveIn(*CurArgReg, VReg);
SDValue Arg = DAG.getCopyFromReg(DAG.getRoot(), dl, VReg, MVT::i32);
- int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset);
+ int FrameIdx = MF.getFrameInfo()->CreateFixedObject(4, ArgOffset,
+ true);
SDValue FIPtr = DAG.getFrameIndex(FrameIdx, MVT::i32);
- OutChains.push_back(DAG.getStore(DAG.getRoot(), dl, Arg, FIPtr, NULL, 0));
+ OutChains.push_back(DAG.getStore(DAG.getRoot(), dl, Arg, FIPtr,
+ MachinePointerInfo(),
+ false, false, 0));
ArgOffset += 4;
}
if (!OutChains.empty()) {
- OutChains.push_back(Root);
- Root = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
- &OutChains[0], OutChains.size());
+ OutChains.push_back(Chain);
+ Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
+ &OutChains[0], OutChains.size());
}
}
- ArgValues.push_back(Root);
-
- // Return the new list of results.
- return DAG.getNode(ISD::MERGE_VALUES, dl, Op.getNode()->getVTList(),
- &ArgValues[0], ArgValues.size()).getValue(Op.getResNo());
+ return Chain;
}
-static SDValue LowerCALL(SDValue Op, SelectionDAG &DAG) {
- CallSDNode *TheCall = cast<CallSDNode>(Op.getNode());
- unsigned CallingConv = TheCall->getCallingConv();
- SDValue Chain = TheCall->getChain();
- SDValue Callee = TheCall->getCallee();
- bool isVarArg = TheCall->isVarArg();
- DebugLoc dl = TheCall->getDebugLoc();
+// Lower formal arguments for the 64 bit ABI.
+SDValue SparcTargetLowering::
+LowerFormalArguments_64(SDValue Chain,
+ CallingConv::ID CallConv,
+ bool IsVarArg,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ DebugLoc DL,
+ SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals) const {
+ MachineFunction &MF = DAG.getMachineFunction();
-#if 0
- // Analyze operands of the call, assigning locations to each operand.
+ // Analyze arguments according to CC_Sparc64.
SmallVector<CCValAssign, 16> ArgLocs;
- CCState CCInfo(CallingConv, isVarArg, DAG.getTarget(), ArgLocs);
- CCInfo.AnalyzeCallOperands(Op.getNode(), CC_Sparc32);
+ CCState CCInfo(CallConv, IsVarArg, DAG.getMachineFunction(),
+ getTargetMachine(), ArgLocs, *DAG.getContext());
+ CCInfo.AnalyzeFormalArguments(Ins, CC_Sparc64);
- // Get the size of the outgoing arguments stack space requirement.
- unsigned ArgsSize = CCInfo.getNextStackOffset();
- // FIXME: We can't use this until f64 is known to take two GPRs.
-#else
- (void)CC_Sparc32;
-
- // Count the size of the outgoing arguments.
- unsigned ArgsSize = 0;
- for (unsigned i = 0, e = TheCall->getNumArgs(); i != e; ++i) {
- switch (TheCall->getArg(i).getValueType().getSimpleVT()) {
- default: llvm_unreachable("Unknown value type!");
- case MVT::i1:
- case MVT::i8:
- case MVT::i16:
- case MVT::i32:
- case MVT::f32:
- ArgsSize += 4;
+ for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
+ CCValAssign &VA = ArgLocs[i];
+ if (VA.isRegLoc()) {
+ // This argument is passed in a register.
+ // All integer register arguments are promoted by the caller to i64.
+
+ // Create a virtual register for the promoted live-in value.
+ unsigned VReg = MF.addLiveIn(VA.getLocReg(),
+ getRegClassFor(VA.getLocVT()));
+ SDValue Arg = DAG.getCopyFromReg(Chain, DL, VReg, VA.getLocVT());
+
+ // Get the high bits for i32 struct elements.
+ if (VA.getValVT() == MVT::i32 && VA.needsCustom())
+ Arg = DAG.getNode(ISD::SRL, DL, VA.getLocVT(), Arg,
+ DAG.getConstant(32, MVT::i32));
+
+ // The caller promoted the argument, so insert an Assert?ext SDNode so we
+ // won't promote the value again in this function.
+ switch (VA.getLocInfo()) {
+ case CCValAssign::SExt:
+ Arg = DAG.getNode(ISD::AssertSext, DL, VA.getLocVT(), Arg,
+ DAG.getValueType(VA.getValVT()));
+ break;
+ case CCValAssign::ZExt:
+ Arg = DAG.getNode(ISD::AssertZext, DL, VA.getLocVT(), Arg,
+ DAG.getValueType(VA.getValVT()));
break;
- case MVT::i64:
- case MVT::f64:
- ArgsSize += 8;
+ default:
break;
+ }
+
+ // Truncate the register down to the argument type.
+ if (VA.isExtInLoc())
+ Arg = DAG.getNode(ISD::TRUNCATE, DL, VA.getValVT(), Arg);
+
+ InVals.push_back(Arg);
+ continue;
}
+
+ // The registers are exhausted. This argument was passed on the stack.
+ assert(VA.isMemLoc());
+ // The CC_Sparc64_Full/Half functions compute stack offsets relative to the
+ // beginning of the arguments area at %fp+BIAS+128.
+ unsigned Offset = VA.getLocMemOffset() + 128;
+ unsigned ValSize = VA.getValVT().getSizeInBits() / 8;
+ // Adjust offset for extended arguments, SPARC is big-endian.
+ // The caller will have written the full slot with extended bytes, but we
+ // prefer our own extending loads.
+ if (VA.isExtInLoc())
+ Offset += 8 - ValSize;
+ int FI = MF.getFrameInfo()->CreateFixedObject(ValSize, Offset, true);
+ InVals.push_back(DAG.getLoad(VA.getValVT(), DL, Chain,
+ DAG.getFrameIndex(FI, getPointerTy()),
+ MachinePointerInfo::getFixedStack(FI),
+ false, false, false, 0));
}
- if (ArgsSize > 4*6)
- ArgsSize -= 4*6; // Space for first 6 arguments is prereserved.
- else
- ArgsSize = 0;
-#endif
+ return Chain;
+}
+
+SDValue
+SparcTargetLowering::LowerCall(TargetLowering::CallLoweringInfo &CLI,
+ SmallVectorImpl<SDValue> &InVals) const {
+ if (Subtarget->is64Bit())
+ return LowerCall_64(CLI, InVals);
+ return LowerCall_32(CLI, InVals);
+}
+
+// Lower a call for the 32-bit ABI.
+SDValue
+SparcTargetLowering::LowerCall_32(TargetLowering::CallLoweringInfo &CLI,
+ SmallVectorImpl<SDValue> &InVals) const {
+ SelectionDAG &DAG = CLI.DAG;
+ 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;
+ CallingConv::ID CallConv = CLI.CallConv;
+ bool isVarArg = CLI.IsVarArg;
+
+ // Sparc target does not yet support tail call optimization.
+ isTailCall = false;
+
+ // Analyze operands of the call, assigning locations to each operand.
+ SmallVector<CCValAssign, 16> ArgLocs;
+ CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
+ DAG.getTarget(), ArgLocs, *DAG.getContext());
+ CCInfo.AnalyzeCallOperands(Outs, CC_Sparc32);
+
+ // Get the size of the outgoing arguments stack space requirement.
+ unsigned ArgsSize = CCInfo.getNextStackOffset();
// Keep stack frames 8-byte aligned.
ArgsSize = (ArgsSize+7) & ~7;
+ MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
+
+ //Create local copies for byval args.
+ SmallVector<SDValue, 8> ByValArgs;
+ for (unsigned i = 0, e = Outs.size(); i != e; ++i) {
+ ISD::ArgFlagsTy Flags = Outs[i].Flags;
+ if (!Flags.isByVal())
+ continue;
+
+ SDValue Arg = OutVals[i];
+ unsigned Size = Flags.getByValSize();
+ unsigned Align = Flags.getByValAlign();
+
+ int FI = MFI->CreateStackObject(Size, Align, false);
+ SDValue FIPtr = DAG.getFrameIndex(FI, getPointerTy());
+ SDValue SizeNode = DAG.getConstant(Size, MVT::i32);
+
+ Chain = DAG.getMemcpy(Chain, dl, FIPtr, Arg, SizeNode, Align,
+ false, //isVolatile,
+ (Size <= 32), //AlwaysInline if size <= 32
+ MachinePointerInfo(), MachinePointerInfo());
+ ByValArgs.push_back(FIPtr);
+ }
+
Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(ArgsSize, true));
SmallVector<std::pair<unsigned, SDValue>, 8> RegsToPass;
SmallVector<SDValue, 8> MemOpChains;
-#if 0
+ const unsigned StackOffset = 92;
+ bool hasStructRetAttr = false;
// Walk the register/memloc assignments, inserting copies/loads.
- for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
+ for (unsigned i = 0, realArgIdx = 0, byvalArgIdx = 0, e = ArgLocs.size();
+ i != e;
+ ++i, ++realArgIdx) {
CCValAssign &VA = ArgLocs[i];
+ SDValue Arg = OutVals[realArgIdx];
+
+ ISD::ArgFlagsTy Flags = Outs[realArgIdx].Flags;
- // Arguments start after the 5 first operands of ISD::CALL
- SDValue Arg = TheCall->getArg(i);
+ //Use local copy if it is a byval arg.
+ if (Flags.isByVal())
+ Arg = ByValArgs[byvalArgIdx++];
// Promote the value if needed.
switch (VA.getLocInfo()) {
default: llvm_unreachable("Unknown loc info!");
case CCValAssign::Full: break;
case CCValAssign::SExt:
- Arg = DAG.getNode(ISD::SIGN_EXTEND, VA.getLocVT(), Arg);
+ Arg = DAG.getNode(ISD::SIGN_EXTEND, dl, VA.getLocVT(), Arg);
break;
case CCValAssign::ZExt:
- Arg = DAG.getNode(ISD::ZERO_EXTEND, VA.getLocVT(), Arg);
+ Arg = DAG.getNode(ISD::ZERO_EXTEND, dl, VA.getLocVT(), Arg);
break;
case CCValAssign::AExt:
- Arg = DAG.getNode(ISD::ANY_EXTEND, VA.getLocVT(), Arg);
+ Arg = DAG.getNode(ISD::ANY_EXTEND, dl, VA.getLocVT(), Arg);
+ break;
+ case CCValAssign::BCvt:
+ Arg = DAG.getNode(ISD::BITCAST, dl, VA.getLocVT(), Arg);
break;
}
- // Arguments that can be passed on register must be kept at
- // RegsToPass vector
- if (VA.isRegLoc()) {
- RegsToPass.push_back(std::make_pair(VA.getLocReg(), Arg));
+ if (Flags.isSRet()) {
+ assert(VA.needsCustom());
+ // store SRet argument in %sp+64
+ SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
+ SDValue PtrOff = DAG.getIntPtrConstant(64);
+ PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
+ MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff,
+ MachinePointerInfo(),
+ false, false, 0));
+ hasStructRetAttr = true;
continue;
}
- assert(VA.isMemLoc());
-
- // Create a store off the stack pointer for this argument.
- SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
- // FIXME: VERIFY THAT 68 IS RIGHT.
- SDValue PtrOff = DAG.getIntPtrConstant(VA.getLocMemOffset()+68);
- PtrOff = DAG.getNode(ISD::ADD, MVT::i32, StackPtr, PtrOff);
- MemOpChains.push_back(DAG.getStore(Chain, Arg, PtrOff, NULL, 0));
- }
-
-#else
- static const unsigned ArgRegs[] = {
- SP::I0, SP::I1, SP::I2, SP::I3, SP::I4, SP::I5
- };
- unsigned ArgOffset = 68;
-
- for (unsigned i = 0, e = TheCall->getNumArgs(); i != e; ++i) {
- SDValue Val = TheCall->getArg(i);
- MVT ObjectVT = Val.getValueType();
- SDValue ValToStore(0, 0);
- unsigned ObjSize;
- switch (ObjectVT.getSimpleVT()) {
- default: llvm_unreachable("Unhandled argument type!");
- case MVT::i32:
- ObjSize = 4;
-
- if (RegsToPass.size() >= 6) {
- ValToStore = Val;
- } else {
- RegsToPass.push_back(std::make_pair(ArgRegs[RegsToPass.size()], Val));
- }
- break;
- case MVT::f32:
- ObjSize = 4;
- if (RegsToPass.size() >= 6) {
- ValToStore = Val;
- } else {
- // Convert this to a FP value in an int reg.
- Val = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::i32, Val);
- RegsToPass.push_back(std::make_pair(ArgRegs[RegsToPass.size()], Val));
- }
- break;
- case MVT::f64: {
- ObjSize = 8;
- if (RegsToPass.size() >= 6) {
- ValToStore = Val; // Whole thing is passed in memory.
- break;
+ if (VA.needsCustom()) {
+ assert(VA.getLocVT() == MVT::f64);
+
+ if (VA.isMemLoc()) {
+ unsigned Offset = VA.getLocMemOffset() + StackOffset;
+ //if it is double-word aligned, just store.
+ if (Offset % 8 == 0) {
+ SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
+ SDValue PtrOff = DAG.getIntPtrConstant(Offset);
+ PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
+ MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff,
+ MachinePointerInfo(),
+ false, false, 0));
+ continue;
+ }
}
- // Break into top and bottom parts by storing to the stack and loading
- // out the parts as integers. Top part goes in a reg.
SDValue StackPtr = DAG.CreateStackTemporary(MVT::f64, MVT::i32);
- SDValue Store = DAG.getStore(DAG.getEntryNode(), dl,
- Val, StackPtr, NULL, 0);
+ SDValue Store = DAG.getStore(DAG.getEntryNode(), dl,
+ Arg, StackPtr, MachinePointerInfo(),
+ false, false, 0);
// Sparc is big-endian, so the high part comes first.
- SDValue Hi = DAG.getLoad(MVT::i32, dl, Store, StackPtr, NULL, 0, 0);
+ SDValue Hi = DAG.getLoad(MVT::i32, dl, Store, StackPtr,
+ MachinePointerInfo(), false, false, false, 0);
// Increment the pointer to the other half.
StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr,
DAG.getIntPtrConstant(4));
// Load the low part.
- SDValue Lo = DAG.getLoad(MVT::i32, dl, Store, StackPtr, NULL, 0, 0);
-
- RegsToPass.push_back(std::make_pair(ArgRegs[RegsToPass.size()], Hi));
-
- if (RegsToPass.size() >= 6) {
- ValToStore = Lo;
- ArgOffset += 4;
- ObjSize = 4;
+ SDValue Lo = DAG.getLoad(MVT::i32, dl, Store, StackPtr,
+ MachinePointerInfo(), false, false, false, 0);
+
+ if (VA.isRegLoc()) {
+ RegsToPass.push_back(std::make_pair(VA.getLocReg(), Hi));
+ assert(i+1 != e);
+ CCValAssign &NextVA = ArgLocs[++i];
+ if (NextVA.isRegLoc()) {
+ RegsToPass.push_back(std::make_pair(NextVA.getLocReg(), Lo));
+ } else {
+ //Store the low part in stack.
+ unsigned Offset = NextVA.getLocMemOffset() + StackOffset;
+ SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
+ SDValue PtrOff = DAG.getIntPtrConstant(Offset);
+ PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
+ MemOpChains.push_back(DAG.getStore(Chain, dl, Lo, PtrOff,
+ MachinePointerInfo(),
+ false, false, 0));
+ }
} else {
- RegsToPass.push_back(std::make_pair(ArgRegs[RegsToPass.size()], Lo));
+ unsigned Offset = VA.getLocMemOffset() + StackOffset;
+ // Store the high part.
+ SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
+ SDValue PtrOff = DAG.getIntPtrConstant(Offset);
+ PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
+ MemOpChains.push_back(DAG.getStore(Chain, dl, Hi, PtrOff,
+ MachinePointerInfo(),
+ false, false, 0));
+ // Store the low part.
+ PtrOff = DAG.getIntPtrConstant(Offset+4);
+ PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
+ MemOpChains.push_back(DAG.getStore(Chain, dl, Lo, PtrOff,
+ MachinePointerInfo(),
+ false, false, 0));
}
- break;
+ continue;
}
- case MVT::i64: {
- ObjSize = 8;
- if (RegsToPass.size() >= 6) {
- ValToStore = Val; // Whole thing is passed in memory.
- break;
- }
- // Split the value into top and bottom part. Top part goes in a reg.
- SDValue Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, MVT::i32, Val,
- DAG.getConstant(1, MVT::i32));
- SDValue Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, MVT::i32, Val,
- DAG.getConstant(0, MVT::i32));
- RegsToPass.push_back(std::make_pair(ArgRegs[RegsToPass.size()], Hi));
-
- if (RegsToPass.size() >= 6) {
- ValToStore = Lo;
- ArgOffset += 4;
- ObjSize = 4;
- } else {
- RegsToPass.push_back(std::make_pair(ArgRegs[RegsToPass.size()], Lo));
+ // Arguments that can be passed on register must be kept at
+ // RegsToPass vector
+ if (VA.isRegLoc()) {
+ if (VA.getLocVT() != MVT::f32) {
+ RegsToPass.push_back(std::make_pair(VA.getLocReg(), Arg));
+ continue;
}
- break;
- }
+ Arg = DAG.getNode(ISD::BITCAST, dl, MVT::i32, Arg);
+ RegsToPass.push_back(std::make_pair(VA.getLocReg(), Arg));
+ continue;
}
- if (ValToStore.getNode()) {
- SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
- SDValue PtrOff = DAG.getConstant(ArgOffset, MVT::i32);
- PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
- MemOpChains.push_back(DAG.getStore(Chain, dl, ValToStore,
- PtrOff, NULL, 0));
- }
- ArgOffset += ObjSize;
+ assert(VA.isMemLoc());
+
+ // Create a store off the stack pointer for this argument.
+ SDValue StackPtr = DAG.getRegister(SP::O6, MVT::i32);
+ SDValue PtrOff = DAG.getIntPtrConstant(VA.getLocMemOffset()+StackOffset);
+ PtrOff = DAG.getNode(ISD::ADD, dl, MVT::i32, StackPtr, PtrOff);
+ MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff,
+ MachinePointerInfo(),
+ false, false, 0));
}
-#endif
+
// Emit all stores, make sure the occur before any copies into physregs.
if (!MemOpChains.empty())
// 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 emited instructions must be
+ // The InFlag in necessary since all emitted instructions must be
// stuck together.
SDValue InFlag;
for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) {
- unsigned Reg = RegsToPass[i].first;
- // Remap I0->I7 -> O0->O7.
- if (Reg >= SP::I0 && Reg <= SP::I7)
- Reg = Reg-SP::I0+SP::O0;
-
+ unsigned Reg = toCallerWindow(RegsToPass[i].first);
Chain = DAG.getCopyToReg(Chain, dl, Reg, RegsToPass[i].second, InFlag);
InFlag = Chain.getValue(1);
}
+ unsigned SRetArgSize = (hasStructRetAttr)? getSRetArgSize(DAG, Callee):0;
+
// If the callee is a GlobalAddress node (quite common, every direct call is)
// turn it into a TargetGlobalAddress node so that legalize doesn't hack it.
// Likewise ExternalSymbol -> TargetExternalSymbol.
if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee))
- Callee = DAG.getTargetGlobalAddress(G->getGlobal(), MVT::i32);
+ Callee = DAG.getTargetGlobalAddress(G->getGlobal(), dl, MVT::i32);
else if (ExternalSymbolSDNode *E = dyn_cast<ExternalSymbolSDNode>(Callee))
Callee = DAG.getTargetExternalSymbol(E->getSymbol(), MVT::i32);
- std::vector<MVT> NodeTys;
- NodeTys.push_back(MVT::Other); // Returns a chain
- NodeTys.push_back(MVT::Flag); // Returns a flag for retval copy to use.
- SDValue Ops[] = { Chain, Callee, InFlag };
- Chain = DAG.getNode(SPISD::CALL, dl, NodeTys, Ops, InFlag.getNode() ? 3 : 2);
+ // Returns a chain & a flag for retval copy to use
+ SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Glue);
+ SmallVector<SDValue, 8> Ops;
+ Ops.push_back(Chain);
+ Ops.push_back(Callee);
+ if (hasStructRetAttr)
+ Ops.push_back(DAG.getTargetConstant(SRetArgSize, MVT::i32));
+ for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i)
+ Ops.push_back(DAG.getRegister(toCallerWindow(RegsToPass[i].first),
+ RegsToPass[i].second.getValueType()));
+ if (InFlag.getNode())
+ Ops.push_back(InFlag);
+
+ Chain = DAG.getNode(SPISD::CALL, dl, NodeTys, &Ops[0], Ops.size());
InFlag = Chain.getValue(1);
Chain = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(ArgsSize, true),
// Assign locations to each value returned by this call.
SmallVector<CCValAssign, 16> RVLocs;
- CCState RVInfo(CallingConv, isVarArg, DAG.getTarget(),
- RVLocs, DAG.getContext());
+ CCState RVInfo(CallConv, isVarArg, DAG.getMachineFunction(),
+ DAG.getTarget(), RVLocs, *DAG.getContext());
- RVInfo.AnalyzeCallResult(TheCall, RetCC_Sparc32);
- SmallVector<SDValue, 8> ResultVals;
+ RVInfo.AnalyzeCallResult(Ins, RetCC_Sparc32);
// Copy all of the result registers out of their specified physreg.
for (unsigned i = 0; i != RVLocs.size(); ++i) {
- unsigned Reg = RVLocs[i].getLocReg();
-
- // Remap I0->I7 -> O0->O7.
- if (Reg >= SP::I0 && Reg <= SP::I7)
- Reg = Reg-SP::I0+SP::O0;
-
- Chain = DAG.getCopyFromReg(Chain, dl, Reg,
+ Chain = DAG.getCopyFromReg(Chain, dl, toCallerWindow(RVLocs[i].getLocReg()),
RVLocs[i].getValVT(), InFlag).getValue(1);
InFlag = Chain.getValue(2);
- ResultVals.push_back(Chain.getValue(0));
+ InVals.push_back(Chain.getValue(0));
}
- ResultVals.push_back(Chain);
+ return Chain;
+}
+
+unsigned
+SparcTargetLowering::getSRetArgSize(SelectionDAG &DAG, SDValue Callee) const
+{
+ const Function *CalleeFn = 0;
+ if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
+ CalleeFn = dyn_cast<Function>(G->getGlobal());
+ } else if (ExternalSymbolSDNode *E =
+ dyn_cast<ExternalSymbolSDNode>(Callee)) {
+ const Function *Fn = DAG.getMachineFunction().getFunction();
+ const Module *M = Fn->getParent();
+ CalleeFn = M->getFunction(E->getSymbol());
+ }
- // Merge everything together with a MERGE_VALUES node.
- return DAG.getNode(ISD::MERGE_VALUES, dl,
- TheCall->getVTList(), &ResultVals[0],
- ResultVals.size());
+ if (!CalleeFn)
+ return 0;
+
+ assert(CalleeFn->hasStructRetAttr() &&
+ "Callee does not have the StructRet attribute.");
+
+ PointerType *Ty = cast<PointerType>(CalleeFn->arg_begin()->getType());
+ Type *ElementTy = Ty->getElementType();
+ return getDataLayout()->getTypeAllocSize(ElementTy);
}
+// Lower a call for the 64-bit ABI.
+SDValue
+SparcTargetLowering::LowerCall_64(TargetLowering::CallLoweringInfo &CLI,
+ SmallVectorImpl<SDValue> &InVals) const {
+ SelectionDAG &DAG = CLI.DAG;
+ DebugLoc DL = CLI.DL;
+ SDValue Chain = CLI.Chain;
+ // Analyze operands of the call, assigning locations to each operand.
+ SmallVector<CCValAssign, 16> ArgLocs;
+ CCState CCInfo(CLI.CallConv, CLI.IsVarArg, DAG.getMachineFunction(),
+ DAG.getTarget(), ArgLocs, *DAG.getContext());
+ CCInfo.AnalyzeCallOperands(CLI.Outs, CC_Sparc64);
+
+ // Get the size of the outgoing arguments stack space requirement.
+ // The stack offset computed by CC_Sparc64 includes all arguments.
+ // Called functions expect 6 argument words to exist in the stack frame, used
+ // or not.
+ unsigned ArgsSize = std::max(6*8u, CCInfo.getNextStackOffset());
+
+ // Keep stack frames 16-byte aligned.
+ ArgsSize = RoundUpToAlignment(ArgsSize, 16);
+
+ // Adjust the stack pointer to make room for the arguments.
+ // FIXME: Use hasReservedCallFrame to avoid %sp adjustments around all calls
+ // with more than 6 arguments.
+ Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(ArgsSize, true));
+
+ // Collect the set of registers to pass to the function and their values.
+ // This will be emitted as a sequence of CopyToReg nodes glued to the call
+ // instruction.
+ SmallVector<std::pair<unsigned, SDValue>, 8> RegsToPass;
+
+ // Collect chains from all the memory opeations that copy arguments to the
+ // stack. They must follow the stack pointer adjustment above and precede the
+ // call instruction itself.
+ SmallVector<SDValue, 8> MemOpChains;
+
+ for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
+ const CCValAssign &VA = ArgLocs[i];
+ SDValue Arg = CLI.OutVals[i];
+
+ // Promote the value if needed.
+ switch (VA.getLocInfo()) {
+ default:
+ llvm_unreachable("Unknown location info!");
+ case CCValAssign::Full:
+ break;
+ case CCValAssign::SExt:
+ Arg = DAG.getNode(ISD::SIGN_EXTEND, DL, VA.getLocVT(), Arg);
+ break;
+ case CCValAssign::ZExt:
+ Arg = DAG.getNode(ISD::ZERO_EXTEND, DL, VA.getLocVT(), Arg);
+ break;
+ case CCValAssign::AExt:
+ Arg = DAG.getNode(ISD::ANY_EXTEND, DL, VA.getLocVT(), Arg);
+ break;
+ case CCValAssign::BCvt:
+ Arg = DAG.getNode(ISD::BITCAST, DL, VA.getLocVT(), Arg);
+ break;
+ }
+
+ if (VA.isRegLoc()) {
+ // The custom bit on an i32 return value indicates that it should be
+ // passed in the high bits of the register.
+ if (VA.getValVT() == MVT::i32 && VA.needsCustom()) {
+ Arg = DAG.getNode(ISD::SHL, DL, MVT::i64, Arg,
+ DAG.getConstant(32, MVT::i32));
+
+ // The next value may go in the low bits of the same register.
+ // Handle both at once.
+ if (i+1 < ArgLocs.size() && ArgLocs[i+1].isRegLoc() &&
+ ArgLocs[i+1].getLocReg() == VA.getLocReg()) {
+ SDValue NV = DAG.getNode(ISD::ZERO_EXTEND, DL, MVT::i64,
+ CLI.OutVals[i+1]);
+ Arg = DAG.getNode(ISD::OR, DL, MVT::i64, Arg, NV);
+ // Skip the next value, it's already done.
+ ++i;
+ }
+ }
+ RegsToPass.push_back(std::make_pair(toCallerWindow(VA.getLocReg()), Arg));
+ continue;
+ }
+
+ assert(VA.isMemLoc());
+
+ // Create a store off the stack pointer for this argument.
+ SDValue StackPtr = DAG.getRegister(SP::O6, getPointerTy());
+ // The argument area starts at %fp+BIAS+128 in the callee frame,
+ // %sp+BIAS+128 in ours.
+ SDValue PtrOff = DAG.getIntPtrConstant(VA.getLocMemOffset() +
+ Subtarget->getStackPointerBias() +
+ 128);
+ PtrOff = DAG.getNode(ISD::ADD, DL, getPointerTy(), StackPtr, PtrOff);
+ MemOpChains.push_back(DAG.getStore(Chain, DL, Arg, PtrOff,
+ MachinePointerInfo(),
+ false, false, 0));
+ }
+
+ // Emit all stores, make sure they occur before the call.
+ if (!MemOpChains.empty())
+ Chain = DAG.getNode(ISD::TokenFactor, DL, MVT::Other,
+ &MemOpChains[0], MemOpChains.size());
+
+ // Build a sequence of CopyToReg nodes glued together with token chain and
+ // glue operands which copy the outgoing args into registers. The InGlue is
+ // necessary since all emitted instructions must be stuck together in order
+ // to pass the live physical registers.
+ SDValue InGlue;
+ for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) {
+ Chain = DAG.getCopyToReg(Chain, DL,
+ RegsToPass[i].first, RegsToPass[i].second, InGlue);
+ InGlue = Chain.getValue(1);
+ }
+
+ // If the callee is a GlobalAddress node (quite common, every direct call is)
+ // turn it into a TargetGlobalAddress node so that legalize doesn't hack it.
+ // Likewise ExternalSymbol -> TargetExternalSymbol.
+ SDValue Callee = CLI.Callee;
+ if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee))
+ Callee = DAG.getTargetGlobalAddress(G->getGlobal(), DL, getPointerTy());
+ else if (ExternalSymbolSDNode *E = dyn_cast<ExternalSymbolSDNode>(Callee))
+ Callee = DAG.getTargetExternalSymbol(E->getSymbol(), getPointerTy());
+
+ // Build the operands for the call instruction itself.
+ SmallVector<SDValue, 8> Ops;
+ Ops.push_back(Chain);
+ Ops.push_back(Callee);
+ for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i)
+ Ops.push_back(DAG.getRegister(RegsToPass[i].first,
+ RegsToPass[i].second.getValueType()));
+
+ // Make sure the CopyToReg nodes are glued to the call instruction which
+ // consumes the registers.
+ if (InGlue.getNode())
+ Ops.push_back(InGlue);
+
+ // Now the call itself.
+ SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Glue);
+ Chain = DAG.getNode(SPISD::CALL, DL, NodeTys, &Ops[0], Ops.size());
+ InGlue = Chain.getValue(1);
+
+ // Revert the stack pointer immediately after the call.
+ Chain = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(ArgsSize, true),
+ DAG.getIntPtrConstant(0, true), InGlue);
+ InGlue = Chain.getValue(1);
+
+ // Now extract the return values. This is more or less the same as
+ // LowerFormalArguments_64.
+
+ // Assign locations to each value returned by this call.
+ SmallVector<CCValAssign, 16> RVLocs;
+ CCState RVInfo(CLI.CallConv, CLI.IsVarArg, DAG.getMachineFunction(),
+ DAG.getTarget(), RVLocs, *DAG.getContext());
+ RVInfo.AnalyzeCallResult(CLI.Ins, CC_Sparc64);
+
+ // Copy all of the result registers out of their specified physreg.
+ for (unsigned i = 0; i != RVLocs.size(); ++i) {
+ CCValAssign &VA = RVLocs[i];
+ unsigned Reg = toCallerWindow(VA.getLocReg());
+
+ // When returning 'inreg {i32, i32 }', two consecutive i32 arguments can
+ // reside in the same register in the high and low bits. Reuse the
+ // CopyFromReg previous node to avoid duplicate copies.
+ SDValue RV;
+ if (RegisterSDNode *SrcReg = dyn_cast<RegisterSDNode>(Chain.getOperand(1)))
+ if (SrcReg->getReg() == Reg && Chain->getOpcode() == ISD::CopyFromReg)
+ RV = Chain.getValue(0);
+
+ // But usually we'll create a new CopyFromReg for a different register.
+ if (!RV.getNode()) {
+ RV = DAG.getCopyFromReg(Chain, DL, Reg, RVLocs[i].getLocVT(), InGlue);
+ Chain = RV.getValue(1);
+ InGlue = Chain.getValue(2);
+ }
+
+ // Get the high bits for i32 struct elements.
+ if (VA.getValVT() == MVT::i32 && VA.needsCustom())
+ RV = DAG.getNode(ISD::SRL, DL, VA.getLocVT(), RV,
+ DAG.getConstant(32, MVT::i32));
+
+ // The callee promoted the return value, so insert an Assert?ext SDNode so
+ // we won't promote the value again in this function.
+ switch (VA.getLocInfo()) {
+ case CCValAssign::SExt:
+ RV = DAG.getNode(ISD::AssertSext, DL, VA.getLocVT(), RV,
+ DAG.getValueType(VA.getValVT()));
+ break;
+ case CCValAssign::ZExt:
+ RV = DAG.getNode(ISD::AssertZext, DL, VA.getLocVT(), RV,
+ DAG.getValueType(VA.getValVT()));
+ break;
+ default:
+ break;
+ }
+
+ // Truncate the register down to the return value type.
+ if (VA.isExtInLoc())
+ RV = DAG.getNode(ISD::TRUNCATE, DL, VA.getValVT(), RV);
+
+ InVals.push_back(RV);
+ }
+
+ return Chain;
+}
//===----------------------------------------------------------------------===//
// TargetLowering Implementation
}
}
-
SparcTargetLowering::SparcTargetLowering(TargetMachine &TM)
- : TargetLowering(TM) {
+ : TargetLowering(TM, new TargetLoweringObjectFileELF()) {
+ Subtarget = &TM.getSubtarget<SparcSubtarget>();
// Set up the register classes.
- addRegisterClass(MVT::i32, SP::IntRegsRegisterClass);
- addRegisterClass(MVT::f32, SP::FPRegsRegisterClass);
- addRegisterClass(MVT::f64, SP::DFPRegsRegisterClass);
+ addRegisterClass(MVT::i32, &SP::IntRegsRegClass);
+ addRegisterClass(MVT::f32, &SP::FPRegsRegClass);
+ addRegisterClass(MVT::f64, &SP::DFPRegsRegClass);
+ if (Subtarget->is64Bit())
+ addRegisterClass(MVT::i64, &SP::I64RegsRegClass);
// Turn FP extload into load/fextend
setLoadExtAction(ISD::EXTLOAD, MVT::f32, Expand);
setTruncStoreAction(MVT::f64, MVT::f32, Expand);
// Custom legalize GlobalAddress nodes into LO/HI parts.
- setOperationAction(ISD::GlobalAddress, MVT::i32, Custom);
- setOperationAction(ISD::GlobalTLSAddress, MVT::i32, Custom);
- setOperationAction(ISD::ConstantPool , MVT::i32, Custom);
+ setOperationAction(ISD::GlobalAddress, getPointerTy(), Custom);
+ setOperationAction(ISD::GlobalTLSAddress, getPointerTy(), Custom);
+ setOperationAction(ISD::ConstantPool, getPointerTy(), Custom);
// Sparc doesn't have sext_inreg, replace them with shl/sra
setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i16, Expand);
setOperationAction(ISD::FP_TO_UINT, MVT::i32, Expand);
setOperationAction(ISD::UINT_TO_FP, MVT::i32, Expand);
- setOperationAction(ISD::BIT_CONVERT, MVT::f32, Expand);
- setOperationAction(ISD::BIT_CONVERT, MVT::i32, Expand);
+ setOperationAction(ISD::BITCAST, MVT::f32, Expand);
+ setOperationAction(ISD::BITCAST, MVT::i32, Expand);
// Sparc has no select or setcc: expand to SELECT_CC.
setOperationAction(ISD::SELECT, MVT::i32, Expand);
setOperationAction(ISD::SELECT_CC, MVT::f32, Custom);
setOperationAction(ISD::SELECT_CC, MVT::f64, Custom);
- // SPARC has no intrinsics for these particular operations.
+ if (Subtarget->is64Bit()) {
+ setOperationAction(ISD::BR_CC, MVT::i64, Custom);
+ setOperationAction(ISD::SELECT_CC, MVT::i64, Custom);
+ }
+
+ // FIXME: There are instructions available for ATOMIC_FENCE
+ // on SparcV8 and later.
setOperationAction(ISD::MEMBARRIER, MVT::Other, Expand);
+ setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Expand);
setOperationAction(ISD::FSIN , MVT::f64, Expand);
setOperationAction(ISD::FCOS , MVT::f64, Expand);
+ setOperationAction(ISD::FSINCOS, MVT::f64, Expand);
setOperationAction(ISD::FREM , MVT::f64, Expand);
+ setOperationAction(ISD::FMA , MVT::f64, Expand);
setOperationAction(ISD::FSIN , MVT::f32, Expand);
setOperationAction(ISD::FCOS , MVT::f32, Expand);
+ setOperationAction(ISD::FSINCOS, MVT::f32, Expand);
setOperationAction(ISD::FREM , MVT::f32, Expand);
+ setOperationAction(ISD::FMA , MVT::f32, Expand);
setOperationAction(ISD::CTPOP, MVT::i32, Expand);
setOperationAction(ISD::CTTZ , MVT::i32, Expand);
+ setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i32, Expand);
setOperationAction(ISD::CTLZ , MVT::i32, Expand);
+ setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i32, Expand);
setOperationAction(ISD::ROTL , MVT::i32, Expand);
setOperationAction(ISD::ROTR , MVT::i32, Expand);
setOperationAction(ISD::BSWAP, MVT::i32, Expand);
setOperationAction(ISD::UMUL_LOHI, MVT::i32, Expand);
setOperationAction(ISD::SMUL_LOHI, MVT::i32, Expand);
- // We don't have line number support yet.
- setOperationAction(ISD::DBG_STOPPOINT, MVT::Other, Expand);
- setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
- setOperationAction(ISD::DBG_LABEL, MVT::Other, Expand);
setOperationAction(ISD::EH_LABEL, MVT::Other, Expand);
- // RET must be custom lowered, to meet ABI requirements
- setOperationAction(ISD::RET , MVT::Other, Custom);
-
// VASTART needs to be custom lowered to use the VarArgsFrameIndex.
setOperationAction(ISD::VASTART , MVT::Other, Custom);
// VAARG needs to be lowered to not do unaligned accesses for doubles.
setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32 , Custom);
// No debug info support yet.
- setOperationAction(ISD::DBG_STOPPOINT, MVT::Other, Expand);
- setOperationAction(ISD::DBG_LABEL, MVT::Other, Expand);
setOperationAction(ISD::EH_LABEL, MVT::Other, Expand);
- setOperationAction(ISD::DECLARE, MVT::Other, Expand);
setStackPointerRegisterToSaveRestore(SP::O6);
if (TM.getSubtarget<SparcSubtarget>().isV9())
setOperationAction(ISD::CTPOP, MVT::i32, Legal);
+ setMinFunctionAlignment(2);
+
computeRegisterProperties();
}
case SPISD::CMPICC: return "SPISD::CMPICC";
case SPISD::CMPFCC: return "SPISD::CMPFCC";
case SPISD::BRICC: return "SPISD::BRICC";
+ case SPISD::BRXCC: return "SPISD::BRXCC";
case SPISD::BRFCC: return "SPISD::BRFCC";
case SPISD::SELECT_ICC: return "SPISD::SELECT_ICC";
+ case SPISD::SELECT_XCC: return "SPISD::SELECT_XCC";
case SPISD::SELECT_FCC: return "SPISD::SELECT_FCC";
case SPISD::Hi: return "SPISD::Hi";
case SPISD::Lo: return "SPISD::Lo";
case SPISD::ITOF: return "SPISD::ITOF";
case SPISD::CALL: return "SPISD::CALL";
case SPISD::RET_FLAG: return "SPISD::RET_FLAG";
+ case SPISD::GLOBAL_BASE_REG: return "SPISD::GLOBAL_BASE_REG";
+ case SPISD::FLUSHW: return "SPISD::FLUSHW";
}
}
/// be zero. Op is expected to be a target specific node. Used by DAG
/// combiner.
void SparcTargetLowering::computeMaskedBitsForTargetNode(const SDValue Op,
- const APInt &Mask,
APInt &KnownZero,
APInt &KnownOne,
const SelectionDAG &DAG,
unsigned Depth) const {
APInt KnownZero2, KnownOne2;
- KnownZero = KnownOne = APInt(Mask.getBitWidth(), 0); // Don't know anything.
+ KnownZero = KnownOne = APInt(KnownZero.getBitWidth(), 0);
switch (Op.getOpcode()) {
default: break;
case SPISD::SELECT_ICC:
+ case SPISD::SELECT_XCC:
case SPISD::SELECT_FCC:
- DAG.ComputeMaskedBits(Op.getOperand(1), Mask, KnownZero, KnownOne,
- Depth+1);
- DAG.ComputeMaskedBits(Op.getOperand(0), Mask, KnownZero2, KnownOne2,
- Depth+1);
+ DAG.ComputeMaskedBits(Op.getOperand(1), KnownZero, KnownOne, Depth+1);
+ DAG.ComputeMaskedBits(Op.getOperand(0), KnownZero2, KnownOne2, Depth+1);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
assert((KnownZero2 & KnownOne2) == 0 && "Bits known to be one AND zero?");
static void LookThroughSetCC(SDValue &LHS, SDValue &RHS,
ISD::CondCode CC, unsigned &SPCC) {
if (isa<ConstantSDNode>(RHS) &&
- cast<ConstantSDNode>(RHS)->getZExtValue() == 0 &&
+ cast<ConstantSDNode>(RHS)->isNullValue() &&
CC == ISD::SETNE &&
- ((LHS.getOpcode() == SPISD::SELECT_ICC &&
+ (((LHS.getOpcode() == SPISD::SELECT_ICC ||
+ LHS.getOpcode() == SPISD::SELECT_XCC) &&
LHS.getOperand(3).getOpcode() == SPISD::CMPICC) ||
(LHS.getOpcode() == SPISD::SELECT_FCC &&
LHS.getOperand(3).getOpcode() == SPISD::CMPFCC)) &&
isa<ConstantSDNode>(LHS.getOperand(0)) &&
isa<ConstantSDNode>(LHS.getOperand(1)) &&
- cast<ConstantSDNode>(LHS.getOperand(0))->getZExtValue() == 1 &&
- cast<ConstantSDNode>(LHS.getOperand(1))->getZExtValue() == 0) {
+ cast<ConstantSDNode>(LHS.getOperand(0))->isOne() &&
+ cast<ConstantSDNode>(LHS.getOperand(1))->isNullValue()) {
SDValue CMPCC = LHS.getOperand(3);
SPCC = cast<ConstantSDNode>(LHS.getOperand(2))->getZExtValue();
LHS = CMPCC.getOperand(0);
}
}
-static SDValue LowerGLOBALADDRESS(SDValue Op, SelectionDAG &DAG) {
- GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
- // FIXME there isn't really any debug info here
- DebugLoc dl = Op.getDebugLoc();
- SDValue GA = DAG.getTargetGlobalAddress(GV, MVT::i32);
- SDValue Hi = DAG.getNode(SPISD::Hi, dl, MVT::i32, GA);
- SDValue Lo = DAG.getNode(SPISD::Lo, dl, MVT::i32, GA);
- return DAG.getNode(ISD::ADD, dl, MVT::i32, Lo, Hi);
+// Convert to a target node and set target flags.
+SDValue SparcTargetLowering::withTargetFlags(SDValue Op, unsigned TF,
+ SelectionDAG &DAG) const {
+ if (const GlobalAddressSDNode *GA = dyn_cast<GlobalAddressSDNode>(Op))
+ return DAG.getTargetGlobalAddress(GA->getGlobal(),
+ GA->getDebugLoc(),
+ GA->getValueType(0),
+ GA->getOffset(), TF);
+ llvm_unreachable("Unhandled address SDNode");
+}
+
+// Split Op into high and low parts according to HiTF and LoTF.
+// Return an ADD node combining the parts.
+SDValue SparcTargetLowering::makeHiLoPair(SDValue Op,
+ unsigned HiTF, unsigned LoTF,
+ SelectionDAG &DAG) const {
+ DebugLoc DL = Op.getDebugLoc();
+ EVT VT = Op.getValueType();
+ SDValue Hi = DAG.getNode(SPISD::Hi, DL, VT, withTargetFlags(Op, HiTF, DAG));
+ SDValue Lo = DAG.getNode(SPISD::Lo, DL, VT, withTargetFlags(Op, LoTF, DAG));
+ return DAG.getNode(ISD::ADD, DL, VT, Hi, Lo);
+}
+
+SDValue SparcTargetLowering::LowerGlobalAddress(SDValue Op,
+ SelectionDAG &DAG) const {
+ SDValue HiLo = makeHiLoPair(Op, SPII::MO_HI, SPII::MO_LO, DAG);
+ if (getTargetMachine().getRelocationModel() != Reloc::PIC_)
+ return HiLo;
+
+ DebugLoc DL = Op.getDebugLoc();
+ SDValue GlobalBase = DAG.getNode(SPISD::GLOBAL_BASE_REG, DL, getPointerTy());
+ SDValue AbsAddr = DAG.getNode(ISD::ADD, DL, getPointerTy(), GlobalBase, HiLo);
+ return DAG.getLoad(getPointerTy(), DL, DAG.getEntryNode(),
+ AbsAddr, MachinePointerInfo(), false, false, false, 0);
}
-static SDValue LowerCONSTANTPOOL(SDValue Op, SelectionDAG &DAG) {
+SDValue SparcTargetLowering::LowerConstantPool(SDValue Op,
+ SelectionDAG &DAG) const {
ConstantPoolSDNode *N = cast<ConstantPoolSDNode>(Op);
// FIXME there isn't really any debug info here
DebugLoc dl = Op.getDebugLoc();
- Constant *C = N->getConstVal();
+ const Constant *C = N->getConstVal();
SDValue CP = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment());
SDValue Hi = DAG.getNode(SPISD::Hi, dl, MVT::i32, CP);
SDValue Lo = DAG.getNode(SPISD::Lo, dl, MVT::i32, CP);
- return DAG.getNode(ISD::ADD, dl, MVT::i32, Lo, Hi);
+ if (getTargetMachine().getRelocationModel() != Reloc::PIC_)
+ return DAG.getNode(ISD::ADD, dl, MVT::i32, Lo, Hi);
+
+ SDValue GlobalBase = DAG.getNode(SPISD::GLOBAL_BASE_REG, dl,
+ getPointerTy());
+ SDValue RelAddr = DAG.getNode(ISD::ADD, dl, MVT::i32, Lo, Hi);
+ SDValue AbsAddr = DAG.getNode(ISD::ADD, dl, MVT::i32,
+ GlobalBase, RelAddr);
+ return DAG.getLoad(getPointerTy(), dl, DAG.getEntryNode(),
+ AbsAddr, MachinePointerInfo(), false, false, false, 0);
}
static SDValue LowerFP_TO_SINT(SDValue Op, SelectionDAG &DAG) {
// Convert the fp value to integer in an FP register.
assert(Op.getValueType() == MVT::i32);
Op = DAG.getNode(SPISD::FTOI, dl, MVT::f32, Op.getOperand(0));
- return DAG.getNode(ISD::BIT_CONVERT, dl, MVT::i32, Op);
+ return DAG.getNode(ISD::BITCAST, dl, MVT::i32, Op);
}
static SDValue LowerSINT_TO_FP(SDValue Op, SelectionDAG &DAG) {
DebugLoc dl = Op.getDebugLoc();
assert(Op.getOperand(0).getValueType() == MVT::i32);
- SDValue Tmp = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::f32, Op.getOperand(0));
+ SDValue Tmp = DAG.getNode(ISD::BITCAST, dl, MVT::f32, Op.getOperand(0));
// Convert the int value to FP in an FP register.
return DAG.getNode(SPISD::ITOF, dl, Op.getValueType(), Tmp);
}
// Get the condition flag.
SDValue CompareFlag;
- if (LHS.getValueType() == MVT::i32) {
- std::vector<MVT> VTs;
- VTs.push_back(MVT::i32);
- VTs.push_back(MVT::Flag);
+ if (LHS.getValueType().isInteger()) {
+ EVT VTs[] = { LHS.getValueType(), MVT::Glue };
SDValue Ops[2] = { LHS, RHS };
CompareFlag = DAG.getNode(SPISD::CMPICC, dl, VTs, Ops, 2).getValue(1);
if (SPCC == ~0U) SPCC = IntCondCCodeToICC(CC);
- Opc = SPISD::BRICC;
+ // 32-bit compares use the icc flags, 64-bit uses the xcc flags.
+ Opc = LHS.getValueType() == MVT::i32 ? SPISD::BRICC : SPISD::BRXCC;
} else {
- CompareFlag = DAG.getNode(SPISD::CMPFCC, dl, MVT::Flag, LHS, RHS);
+ CompareFlag = DAG.getNode(SPISD::CMPFCC, dl, MVT::Glue, LHS, RHS);
if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
Opc = SPISD::BRFCC;
}
LookThroughSetCC(LHS, RHS, CC, SPCC);
SDValue CompareFlag;
- if (LHS.getValueType() == MVT::i32) {
- std::vector<MVT> VTs;
- VTs.push_back(LHS.getValueType()); // subcc returns a value
- VTs.push_back(MVT::Flag);
+ if (LHS.getValueType().isInteger()) {
+ // subcc returns a value
+ EVT VTs[] = { LHS.getValueType(), MVT::Glue };
SDValue Ops[2] = { LHS, RHS };
CompareFlag = DAG.getNode(SPISD::CMPICC, dl, VTs, Ops, 2).getValue(1);
- Opc = SPISD::SELECT_ICC;
+ Opc = LHS.getValueType() == MVT::i32 ?
+ SPISD::SELECT_ICC : SPISD::SELECT_XCC;
if (SPCC == ~0U) SPCC = IntCondCCodeToICC(CC);
} else {
- CompareFlag = DAG.getNode(SPISD::CMPFCC, dl, MVT::Flag, LHS, RHS);
+ CompareFlag = DAG.getNode(SPISD::CMPFCC, dl, MVT::Glue, LHS, RHS);
Opc = SPISD::SELECT_FCC;
if (SPCC == ~0U) SPCC = FPCondCCodeToFCC(CC);
}
}
static SDValue LowerVASTART(SDValue Op, SelectionDAG &DAG,
- SparcTargetLowering &TLI) {
+ const SparcTargetLowering &TLI) {
+ MachineFunction &MF = DAG.getMachineFunction();
+ SparcMachineFunctionInfo *FuncInfo = MF.getInfo<SparcMachineFunctionInfo>();
+
// vastart just stores the address of the VarArgsFrameIndex slot into the
// memory location argument.
DebugLoc dl = Op.getDebugLoc();
- SDValue Offset = DAG.getNode(ISD::ADD, dl, MVT::i32,
- DAG.getRegister(SP::I6, MVT::i32),
- DAG.getConstant(TLI.getVarArgsFrameOffset(),
- MVT::i32));
+ SDValue Offset =
+ DAG.getNode(ISD::ADD, dl, MVT::i32,
+ DAG.getRegister(SP::I6, MVT::i32),
+ DAG.getConstant(FuncInfo->getVarArgsFrameOffset(),
+ MVT::i32));
const Value *SV = cast<SrcValueSDNode>(Op.getOperand(2))->getValue();
- return DAG.getStore(Op.getOperand(0), dl, Offset, Op.getOperand(1), SV, 0);
+ return DAG.getStore(Op.getOperand(0), dl, Offset, Op.getOperand(1),
+ MachinePointerInfo(SV), false, false, 0);
}
static SDValue LowerVAARG(SDValue Op, SelectionDAG &DAG) {
SDNode *Node = Op.getNode();
- MVT VT = Node->getValueType(0);
+ EVT VT = Node->getValueType(0);
SDValue InChain = Node->getOperand(0);
SDValue VAListPtr = Node->getOperand(1);
const Value *SV = cast<SrcValueSDNode>(Node->getOperand(2))->getValue();
DebugLoc dl = Node->getDebugLoc();
- SDValue VAList = DAG.getLoad(MVT::i32, dl, InChain, VAListPtr, SV, 0);
+ SDValue VAList = DAG.getLoad(MVT::i32, dl, InChain, VAListPtr,
+ MachinePointerInfo(SV), false, false, false, 0);
// Increment the pointer, VAList, to the next vaarg
SDValue NextPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, VAList,
DAG.getConstant(VT.getSizeInBits()/8,
MVT::i32));
// Store the incremented VAList to the legalized pointer
InChain = DAG.getStore(VAList.getValue(1), dl, NextPtr,
- VAListPtr, SV, 0);
+ VAListPtr, MachinePointerInfo(SV), false, false, 0);
// Load the actual argument out of the pointer VAList, unless this is an
// f64 load.
if (VT != MVT::f64)
- return DAG.getLoad(VT, dl, InChain, VAList, NULL, 0);
+ return DAG.getLoad(VT, dl, InChain, VAList, MachinePointerInfo(),
+ false, false, false, 0);
// Otherwise, load it as i64, then do a bitconvert.
- SDValue V = DAG.getLoad(MVT::i64, dl, InChain, VAList, NULL, 0);
+ SDValue V = DAG.getLoad(MVT::i64, dl, InChain, VAList, MachinePointerInfo(),
+ false, false, false, 0);
// Bit-Convert the value to f64.
SDValue Ops[2] = {
- DAG.getNode(ISD::BIT_CONVERT, dl, MVT::f64, V),
+ DAG.getNode(ISD::BITCAST, dl, MVT::f64, V),
V.getValue(1)
};
return DAG.getMergeValues(Ops, 2, dl);
}
+static SDValue getFLUSHW(SDValue Op, SelectionDAG &DAG) {
+ DebugLoc dl = Op.getDebugLoc();
+ SDValue Chain = DAG.getNode(SPISD::FLUSHW,
+ dl, MVT::Other, DAG.getEntryNode());
+ return Chain;
+}
+
+static SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) {
+ MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
+ MFI->setFrameAddressIsTaken(true);
+
+ EVT VT = Op.getValueType();
+ DebugLoc dl = Op.getDebugLoc();
+ unsigned FrameReg = SP::I6;
+
+ uint64_t depth = Op.getConstantOperandVal(0);
+
+ SDValue FrameAddr;
+ if (depth == 0)
+ FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, FrameReg, VT);
+ else {
+ // flush first to make sure the windowed registers' values are in stack
+ SDValue Chain = getFLUSHW(Op, DAG);
+ FrameAddr = DAG.getCopyFromReg(Chain, dl, FrameReg, VT);
+
+ for (uint64_t i = 0; i != depth; ++i) {
+ SDValue Ptr = DAG.getNode(ISD::ADD,
+ dl, MVT::i32,
+ FrameAddr, DAG.getIntPtrConstant(56));
+ FrameAddr = DAG.getLoad(MVT::i32, dl,
+ Chain,
+ Ptr,
+ MachinePointerInfo(), false, false, false, 0);
+ }
+ }
+ return FrameAddr;
+}
+
+static SDValue LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) {
+ MachineFrameInfo *MFI = DAG.getMachineFunction().getFrameInfo();
+ MFI->setReturnAddressIsTaken(true);
+
+ EVT VT = Op.getValueType();
+ DebugLoc dl = Op.getDebugLoc();
+ unsigned RetReg = SP::I7;
+
+ uint64_t depth = Op.getConstantOperandVal(0);
+
+ SDValue RetAddr;
+ if (depth == 0)
+ RetAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, RetReg, VT);
+ else {
+ // flush first to make sure the windowed registers' values are in stack
+ SDValue Chain = getFLUSHW(Op, DAG);
+ RetAddr = DAG.getCopyFromReg(Chain, dl, SP::I6, VT);
+
+ for (uint64_t i = 0; i != depth; ++i) {
+ SDValue Ptr = DAG.getNode(ISD::ADD,
+ dl, MVT::i32,
+ RetAddr,
+ DAG.getIntPtrConstant((i == depth-1)?60:56));
+ RetAddr = DAG.getLoad(MVT::i32, dl,
+ Chain,
+ Ptr,
+ MachinePointerInfo(), false, false, false, 0);
+ }
+ }
+ return RetAddr;
+}
+
SDValue SparcTargetLowering::
-LowerOperation(SDValue Op, SelectionDAG &DAG) {
+LowerOperation(SDValue Op, SelectionDAG &DAG) const {
switch (Op.getOpcode()) {
default: llvm_unreachable("Should not custom lower this!");
- // Frame & Return address. Currently unimplemented
- case ISD::RETURNADDR: return SDValue();
- case ISD::FRAMEADDR: return SDValue();
+ case ISD::RETURNADDR: return LowerRETURNADDR(Op, DAG);
+ case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG);
case ISD::GlobalTLSAddress:
llvm_unreachable("TLS not implemented for Sparc.");
- case ISD::GlobalAddress: return LowerGLOBALADDRESS(Op, DAG);
- case ISD::ConstantPool: return LowerCONSTANTPOOL(Op, DAG);
+ case ISD::GlobalAddress: return LowerGlobalAddress(Op, DAG);
+ case ISD::ConstantPool: return LowerConstantPool(Op, DAG);
case ISD::FP_TO_SINT: return LowerFP_TO_SINT(Op, DAG);
case ISD::SINT_TO_FP: return LowerSINT_TO_FP(Op, DAG);
case ISD::BR_CC: return LowerBR_CC(Op, DAG);
case ISD::VASTART: return LowerVASTART(Op, DAG, *this);
case ISD::VAARG: return LowerVAARG(Op, DAG);
case ISD::DYNAMIC_STACKALLOC: return LowerDYNAMIC_STACKALLOC(Op, DAG);
- case ISD::CALL: return LowerCALL(Op, DAG);
- case ISD::FORMAL_ARGUMENTS: return LowerFORMAL_ARGUMENTS(Op, DAG);
- case ISD::RET: return LowerRET(Op, DAG);
}
}
MachineFunction *F = BB->getParent();
MachineBasicBlock *copy0MBB = F->CreateMachineBasicBlock(LLVM_BB);
MachineBasicBlock *sinkMBB = F->CreateMachineBasicBlock(LLVM_BB);
- BuildMI(BB, dl, TII.get(BROpcode)).addMBB(sinkMBB).addImm(CC);
F->insert(It, copy0MBB);
F->insert(It, sinkMBB);
- // Update machine-CFG edges by transferring all successors of the current
- // block to the new block which will contain the Phi node for the select.
- sinkMBB->transferSuccessors(BB);
- // Next, add the true and fallthrough blocks as its successors.
+
+ // 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);
+
+ // Add the true and fallthrough blocks as its successors.
BB->addSuccessor(copy0MBB);
BB->addSuccessor(sinkMBB);
+ BuildMI(BB, dl, TII.get(BROpcode)).addMBB(sinkMBB).addImm(CC);
+
// copy0MBB:
// %FalseValue = ...
// # fallthrough to sinkMBB
// %Result = phi [ %FalseValue, copy0MBB ], [ %TrueValue, thisMBB ]
// ...
BB = sinkMBB;
- BuildMI(BB, dl, TII.get(SP::PHI), MI->getOperand(0).getReg())
+ BuildMI(*BB, BB->begin(), dl, TII.get(SP::PHI), MI->getOperand(0).getReg())
.addReg(MI->getOperand(2).getReg()).addMBB(copy0MBB)
.addReg(MI->getOperand(1).getReg()).addMBB(thisMBB);
- F->DeleteMachineInstr(MI); // The pseudo instruction is gone now.
+ MI->eraseFromParent(); // The pseudo instruction is gone now.
return BB;
}
std::pair<unsigned, const TargetRegisterClass*>
SparcTargetLowering::getRegForInlineAsmConstraint(const std::string &Constraint,
- MVT VT) const {
+ EVT VT) const {
if (Constraint.size() == 1) {
switch (Constraint[0]) {
case 'r':
- return std::make_pair(0U, SP::IntRegsRegisterClass);
+ return std::make_pair(0U, &SP::IntRegsRegClass);
}
}
return TargetLowering::getRegForInlineAsmConstraint(Constraint, VT);
}
-std::vector<unsigned> SparcTargetLowering::
-getRegClassForInlineAsmConstraint(const std::string &Constraint,
- MVT VT) const {
- if (Constraint.size() != 1)
- return std::vector<unsigned>();
-
- switch (Constraint[0]) {
- default: break;
- case 'r':
- return make_vector<unsigned>(SP::L0, SP::L1, SP::L2, SP::L3,
- SP::L4, SP::L5, SP::L6, SP::L7,
- SP::I0, SP::I1, SP::I2, SP::I3,
- SP::I4, SP::I5,
- SP::O0, SP::O1, SP::O2, SP::O3,
- SP::O4, SP::O5, SP::O7, 0);
- }
-
- return std::vector<unsigned>();
-}
-
bool
SparcTargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const {
// The Sparc target isn't yet aware of offsets.
return false;
}
-
-/// getFunctionAlignment - Return the Log2 alignment of this function.
-unsigned SparcTargetLowering::getFunctionAlignment(const Function *) const {
- return 4;
-}
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