#include "BlackfinISelLowering.h"
#include "BlackfinTargetMachine.h"
#include "llvm/Function.h"
+#include "llvm/Type.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/PseudoSourceValue.h"
#include "llvm/CodeGen/SelectionDAG.h"
-#include "llvm/Target/TargetLoweringObjectFile.h"
+#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
#include "llvm/ADT/VectorExtras.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
BlackfinTargetLowering::BlackfinTargetLowering(TargetMachine &TM)
: TargetLowering(TM, new TargetLoweringObjectFileELF()) {
- setShiftAmountType(MVT::i16);
setBooleanContents(ZeroOrOneBooleanContent);
+ setBooleanVectorContents(ZeroOrOneBooleanContent); // FIXME: Is this correct?
setStackPointerRegisterToSaveRestore(BF::SP);
setIntDivIsCheap(false);
// Blackfin has no intrinsics for these particular operations.
setOperationAction(ISD::MEMBARRIER, MVT::Other, Expand);
+ setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Expand);
setOperationAction(ISD::BSWAP, MVT::i32, Expand);
setOperationAction(ISD::SHL_PARTS, MVT::i32, Expand);
// READCYCLECOUNTER needs special type legalization.
setOperationAction(ISD::READCYCLECOUNTER, MVT::i64, Custom);
- // 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);
// Use the default implementation.
setOperationAction(ISD::VAEND, MVT::Other, Expand);
setOperationAction(ISD::STACKSAVE, MVT::Other, Expand);
setOperationAction(ISD::STACKRESTORE, MVT::Other, Expand);
+
+ setMinFunctionAlignment(2);
}
const char *BlackfinTargetLowering::getTargetNodeName(unsigned Opcode) const {
}
}
-MVT::SimpleValueType BlackfinTargetLowering::getSetCCResultType(EVT VT) const {
+EVT BlackfinTargetLowering::getSetCCResultType(EVT VT) const {
// SETCC always sets the CC register. Technically that is an i1 register, but
// that type is not legal, so we treat it as an i32 register.
return MVT::i32;
}
SDValue BlackfinTargetLowering::LowerGlobalAddress(SDValue Op,
- SelectionDAG &DAG) {
+ SelectionDAG &DAG) const {
DebugLoc DL = Op.getDebugLoc();
- GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
+ const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
- Op = DAG.getTargetGlobalAddress(GV, MVT::i32);
+ Op = DAG.getTargetGlobalAddress(GV, DL, MVT::i32);
return DAG.getNode(BFISD::Wrapper, DL, MVT::i32, Op);
}
-SDValue BlackfinTargetLowering::LowerJumpTable(SDValue Op, SelectionDAG &DAG) {
+SDValue BlackfinTargetLowering::LowerJumpTable(SDValue Op,
+ SelectionDAG &DAG) const {
DebugLoc DL = Op.getDebugLoc();
int JTI = cast<JumpTableSDNode>(Op)->getIndex();
const SmallVectorImpl<ISD::InputArg>
&Ins,
DebugLoc dl, SelectionDAG &DAG,
- SmallVectorImpl<SDValue> &InVals) {
+ SmallVectorImpl<SDValue> &InVals)
+ const {
MachineFunction &MF = DAG.getMachineFunction();
MachineFrameInfo *MFI = MF.getFrameInfo();
SmallVector<CCValAssign, 16> ArgLocs;
- CCState CCInfo(CallConv, isVarArg, getTargetMachine(),
- ArgLocs, *DAG.getContext());
+ CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
+ getTargetMachine(), ArgLocs, *DAG.getContext());
CCInfo.AllocateStack(12, 4); // ABI requires 12 bytes stack space
CCInfo.AnalyzeFormalArguments(Ins, CC_Blackfin);
} else {
assert(VA.isMemLoc() && "CCValAssign must be RegLoc or MemLoc");
unsigned ObjSize = VA.getLocVT().getStoreSize();
- int FI = MFI->CreateFixedObject(ObjSize, VA.getLocMemOffset());
+ int FI = MFI->CreateFixedObject(ObjSize, VA.getLocMemOffset(), true);
SDValue FIN = DAG.getFrameIndex(FI, MVT::i32);
- InVals.push_back(DAG.getLoad(VA.getValVT(), dl, Chain, FIN, NULL, 0));
+ InVals.push_back(DAG.getLoad(VA.getValVT(), dl, Chain, FIN,
+ MachinePointerInfo(),
+ false, false, 0));
}
}
BlackfinTargetLowering::LowerReturn(SDValue Chain,
CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
- DebugLoc dl, SelectionDAG &DAG) {
+ 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.getTarget(),
- RVLocs, *DAG.getContext());
+ CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
+ DAG.getTarget(), RVLocs, *DAG.getContext());
// Analize return values.
CCInfo.AnalyzeReturn(Outs, RetCC_Blackfin);
for (unsigned i = 0; i != RVLocs.size(); ++i) {
CCValAssign &VA = RVLocs[i];
assert(VA.isRegLoc() && "Can only return in registers!");
- SDValue Opi = Outs[i].Val;
+ SDValue Opi = OutVals[i];
// Expand to i32 if necessary
switch (VA.getLocInfo()) {
SDValue
BlackfinTargetLowering::LowerCall(SDValue Chain, SDValue Callee,
CallingConv::ID CallConv, bool isVarArg,
- bool isTailCall,
+ bool &isTailCall,
const SmallVectorImpl<ISD::OutputArg> &Outs,
+ const SmallVectorImpl<SDValue> &OutVals,
const SmallVectorImpl<ISD::InputArg> &Ins,
DebugLoc dl, SelectionDAG &DAG,
- SmallVectorImpl<SDValue> &InVals) {
+ SmallVectorImpl<SDValue> &InVals) const {
+ // Blackfin 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.getTarget(), ArgLocs,
- *DAG.getContext());
+ CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
+ DAG.getTarget(), ArgLocs, *DAG.getContext());
CCInfo.AllocateStack(12, 4); // ABI requires 12 bytes stack space
CCInfo.AnalyzeCallOperands(Outs, CC_Blackfin);
// Walk the register/memloc assignments, inserting copies/loads.
for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
CCValAssign &VA = ArgLocs[i];
- SDValue Arg = Outs[i].Val;
+ SDValue Arg = OutVals[i];
// Promote the value if needed.
switch (VA.getLocInfo()) {
SDValue OffsetN = DAG.getIntPtrConstant(Offset);
OffsetN = DAG.getNode(ISD::ADD, dl, MVT::i32, SPN, OffsetN);
MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, OffsetN,
- PseudoSourceValue::getStack(),
- Offset));
+ MachinePointerInfo(),false, false, 0));
}
}
// 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) {
// 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<EVT> NodeTys;
NodeTys.push_back(MVT::Other); // Returns a chain
- NodeTys.push_back(MVT::Flag); // Returns a flag for retval copy to use.
+ NodeTys.push_back(MVT::Glue); // Returns a flag for retval copy to use.
SDValue Ops[] = { Chain, Callee, InFlag };
Chain = DAG.getNode(BFISD::CALL, dl, NodeTys, Ops,
InFlag.getNode() ? 3 : 2);
// Assign locations to each value returned by this call.
SmallVector<CCValAssign, 16> RVLocs;
- CCState RVInfo(CallConv, isVarArg, DAG.getTarget(), RVLocs,
- *DAG.getContext());
+ CCState RVInfo(CallConv, isVarArg, DAG.getMachineFunction(),
+ DAG.getTarget(), RVLocs, *DAG.getContext());
RVInfo.AnalyzeCallResult(Ins, RetCC_Blackfin);
// Expansion of ADDE / SUBE. This is a bit involved since blackfin doesn't have
// add-with-carry instructions.
-SDValue BlackfinTargetLowering::LowerADDE(SDValue Op, SelectionDAG &DAG) {
+SDValue BlackfinTargetLowering::LowerADDE(SDValue Op, SelectionDAG &DAG) const {
// Operands: lhs, rhs, carry-in (AC0 flag)
// Results: sum, carry-out (AC0 flag)
DebugLoc dl = Op.getDebugLoc();
SDValue(CarryIn, 0));
// Add operands, produce sum and carry flag
- SDNode *Sum = DAG.getMachineNode(Opcode, dl, MVT::i32, MVT::Flag,
+ SDNode *Sum = DAG.getMachineNode(Opcode, dl, MVT::i32, MVT::Glue,
Op.getOperand(0), Op.getOperand(1));
// Store intermediate carry from Sum
/* flag= */ SDValue(Sum, 1));
// Add incoming carry, again producing an output flag
- Sum = DAG.getMachineNode(Opcode, dl, MVT::i32, MVT::Flag,
+ Sum = DAG.getMachineNode(Opcode, dl, MVT::i32, MVT::Glue,
SDValue(Sum, 0), SDValue(CarryIn, 0));
// Update AC0 with the intermediate carry, producing a flag.
- SDNode *CarryOut = DAG.getMachineNode(BF::OR_ac0_cc, dl, MVT::Flag,
+ SDNode *CarryOut = DAG.getMachineNode(BF::OR_ac0_cc, dl, MVT::Glue,
SDValue(Carry1, 0));
// Compose (i32, flag) pair
return DAG.getMergeValues(ops, 2, dl);
}
-SDValue BlackfinTargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) {
+SDValue BlackfinTargetLowering::LowerOperation(SDValue Op,
+ SelectionDAG &DAG) const {
switch (Op.getOpcode()) {
default:
Op.getNode()->dump();
void
BlackfinTargetLowering::ReplaceNodeResults(SDNode *N,
SmallVectorImpl<SDValue> &Results,
- SelectionDAG &DAG) {
+ SelectionDAG &DAG) const {
DebugLoc dl = N->getDebugLoc();
switch (N->getOpcode()) {
default:
}
}
-/// getFunctionAlignment - Return the Log2 alignment of this function.
-unsigned BlackfinTargetLowering::getFunctionAlignment(const Function *F) const {
- return 2;
-}
-
//===----------------------------------------------------------------------===//
// Blackfin Inline Assembly Support
//===----------------------------------------------------------------------===//
return TargetLowering::getConstraintType(Constraint);
}
+/// Examine constraint type and operand type and determine a weight value.
+/// This object must already have been set up with the operand type
+/// and the current alternative constraint selected.
+TargetLowering::ConstraintWeight
+BlackfinTargetLowering::getSingleConstraintMatchWeight(
+ AsmOperandInfo &info, const char *constraint) const {
+ ConstraintWeight weight = CW_Invalid;
+ Value *CallOperandVal = info.CallOperandVal;
+ // If we don't have a value, we can't do a match,
+ // but allow it at the lowest weight.
+ if (CallOperandVal == NULL)
+ return CW_Default;
+ // Look at the constraint type.
+ switch (*constraint) {
+ default:
+ weight = TargetLowering::getSingleConstraintMatchWeight(info, constraint);
+ break;
+
+ // Blackfin-specific constraints
+ case 'a':
+ case 'd':
+ case 'z':
+ case 'D':
+ case 'W':
+ case 'e':
+ case 'b':
+ case 'v':
+ case 'f':
+ case 'c':
+ case 't':
+ case 'u':
+ case 'k':
+ case 'x':
+ case 'y':
+ case 'w':
+ return CW_Register;
+ case 'A':
+ case 'B':
+ case 'C':
+ case 'Z':
+ case 'Y':
+ return CW_SpecificReg;
+ }
+ return weight;
+}
+
/// getRegForInlineAsmConstraint - Return register no and class for a C_Register
/// constraint.
std::pair<unsigned, const TargetRegisterClass*> BlackfinTargetLowering::
case 'w': return Pair(0U, ALLRegisterClass);
case 'Z': return Pair(P3, PRegisterClass);
case 'Y': return Pair(P1, PRegisterClass);
+ case 'z': return Pair(0U, zConsRegisterClass);
+ case 'D': return Pair(0U, DConsRegisterClass);
+ case 'W': return Pair(0U, WConsRegisterClass);
+ case 'c': return Pair(0U, cConsRegisterClass);
+ case 't': return Pair(0U, tConsRegisterClass);
+ case 'u': return Pair(0U, uConsRegisterClass);
+ case 'k': return Pair(0U, kConsRegisterClass);
+ case 'y': return Pair(0U, yConsRegisterClass);
}
// Not implemented: q0-q7, qA. Use {R2} etc instead.
- // Constraints z, D, W, c, t, u, k, and y use non-existing classes, defer to
- // getRegClassForInlineAsmConstraint()
return TargetLowering::getRegForInlineAsmConstraint(Constraint, VT);
}
-std::vector<unsigned> BlackfinTargetLowering::
-getRegClassForInlineAsmConstraint(const std::string &Constraint, EVT VT) const {
- using namespace BF;
-
- if (Constraint.size() != 1)
- return std::vector<unsigned>();
-
- switch (Constraint[0]) {
- case 'z': return make_vector<unsigned>(P0, P1, P2, 0);
- case 'D': return make_vector<unsigned>(R0, R2, R4, R6, 0);
- case 'W': return make_vector<unsigned>(R1, R3, R5, R7, 0);
- case 'c': return make_vector<unsigned>(I0, I1, I2, I3,
- B0, B1, B2, B3,
- L0, L1, L2, L3, 0);
- case 't': return make_vector<unsigned>(LT0, LT1, 0);
- case 'u': return make_vector<unsigned>(LB0, LB1, 0);
- case 'k': return make_vector<unsigned>(LC0, LC1, 0);
- case 'y': return make_vector<unsigned>(RETS, RETN, RETI, RETX, RETE,
- ASTAT, SEQSTAT, USP, 0);
- }
-
- return std::vector<unsigned>();
-}
-
bool BlackfinTargetLowering::
isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const {
// The Blackfin target isn't yet aware of offsets.
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