#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/IR/CallingConv.h"
+#include "llvm/IR/Instruction.h"
#include "llvm/Target/TargetLowering.h"
namespace llvm {
WrapperLarge, // 4-instruction MOVZ/MOVK sequence for 64-bit addresses.
CALL, // Function call.
- // Almost the same as a normal call node, except that a TLSDesc relocation is
- // needed so the linker can relax it correctly if possible.
- TLSDESC_CALL,
+ // Produces the full sequence of instructions for getting the thread pointer
+ // offset of a variable into X0, using the TLSDesc model.
+ TLSDESC_CALLSEQ,
ADRP, // Page address of a TargetGlobalAddress operand.
ADDlow, // Add the low 12 bits of a TargetGlobalAddress operand.
LOADgot, // Load from automatically generated descriptor (e.g. Global
FCMLEz,
FCMLTz,
+ // Vector across-lanes addition
+ // Only the lower result lane is defined.
+ SADDV,
+ UADDV,
+
+ // Vector across-lanes min/max
+ // Only the lower result lane is defined.
+ SMINV,
+ UMINV,
+ SMAXV,
+ UMAXV,
+
// Vector bitwise negation
NOT,
SITOF,
UITOF,
+ /// Natural vector cast. ISD::BITCAST is not natural in the big-endian
+ /// world w.r.t vectors; which causes additional REV instructions to be
+ /// generated to compensate for the byte-swapping. But sometimes we do
+ /// need to re-interpret the data in SIMD vector registers in big-endian
+ /// mode without emitting such REV instructions.
+ NVCAST,
+
+ SMULL,
+ UMULL,
+
// NEON Load/Store with post-increment base updates
LD2post = ISD::FIRST_TARGET_MEMORY_OPCODE,
LD3post,
bool RequireStrictAlign;
public:
- explicit AArch64TargetLowering(TargetMachine &TM);
+ explicit AArch64TargetLowering(const TargetMachine &TM,
+ const AArch64Subtarget &STI);
/// Selects the correct CCAssignFn for a given CallingConvention value.
CCAssignFn *CCAssignFnForCall(CallingConv::ID CC, bool IsVarArg) const;
MVT getScalarShiftAmountTy(EVT LHSTy) const override;
/// allowsMisalignedMemoryAccesses - Returns true if the target allows
- /// unaligned memory accesses. of the specified type.
+ /// unaligned memory accesses of the specified type.
bool allowsMisalignedMemoryAccesses(EVT VT, unsigned AddrSpace = 0,
unsigned Align = 1,
bool *Fast = nullptr) const override {
/// getFunctionAlignment - Return the Log2 alignment of this function.
unsigned getFunctionAlignment(const Function *F) const;
- /// getMaximalGlobalOffset - Returns the maximal possible offset which can
- /// be used for loads / stores from the global.
- unsigned getMaximalGlobalOffset() const override;
-
/// Returns true if a cast between SrcAS and DestAS is a noop.
bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override {
// Addrspacecasts are always noops.
bool isTruncateFree(Type *Ty1, Type *Ty2) const override;
bool isTruncateFree(EVT VT1, EVT VT2) const override;
+ bool isProfitableToHoist(Instruction *I) const override;
+
bool isZExtFree(Type *Ty1, Type *Ty2) const override;
bool isZExtFree(EVT VT1, EVT VT2) const override;
bool isZExtFree(SDValue Val, EVT VT2) const override;
bool shouldConvertConstantLoadToIntImm(const APInt &Imm,
Type *Ty) const override;
+ bool hasLoadLinkedStoreConditional() const override;
Value *emitLoadLinked(IRBuilder<> &Builder, Value *Addr,
AtomicOrdering Ord) const override;
Value *emitStoreConditional(IRBuilder<> &Builder, Value *Val,
Value *Addr, AtomicOrdering Ord) const override;
- bool shouldExpandAtomicInIR(Instruction *Inst) const override;
+ bool shouldExpandAtomicLoadInIR(LoadInst *LI) const override;
+ bool shouldExpandAtomicStoreInIR(StoreInst *SI) const override;
+ TargetLoweringBase::AtomicRMWExpansionKind
+ shouldExpandAtomicRMWInIR(AtomicRMWInst *AI) const override;
bool useLoadStackGuardNode() const override;
TargetLoweringBase::LegalizeTypeAction
getPreferredVectorAction(EVT VT) const override;
private:
+ bool isExtFreeImpl(const Instruction *Ext) const override;
+
/// Subtarget - Keep a pointer to the AArch64Subtarget around so that we can
/// make the right decision when generating code for different targets.
const AArch64Subtarget *Subtarget;
SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerDarwinGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerELFGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const;
- SDValue LowerELFTLSDescCall(SDValue SymAddr, SDValue DescAddr, SDLoc DL,
- SelectionDAG &DAG) const;
+ SDValue LowerELFTLSDescCallSeq(SDValue SymAddr, SDLoc DL,
+ SelectionDAG &DAG) const;
SDValue LowerSETCC(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerSELECT(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerSELECT_CC(ISD::CondCode CC, SDValue LHS, SDValue RHS,
+ SDValue TVal, SDValue FVal, SDLoc dl,
+ SelectionDAG &DAG) const;
SDValue LowerJumpTable(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerBlockAddress(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerFSINCOS(SDValue Op, SelectionDAG &DAG) const;
SDValue BuildSDIVPow2(SDNode *N, const APInt &Divisor, SelectionDAG &DAG,
- std::vector<SDNode *> *Created) const;
+ std::vector<SDNode *> *Created) const override;
+ bool combineRepeatedFPDivisors(unsigned NumUsers) const override;
ConstraintType
getConstraintType(const std::string &Constraint) const override;
const char *constraint) const override;
std::pair<unsigned, const TargetRegisterClass *>
- getRegForInlineAsmConstraint(const std::string &Constraint,
+ getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI,
+ const std::string &Constraint,
MVT VT) const override;
void LowerAsmOperandForConstraint(SDValue Op, std::string &Constraint,
std::vector<SDValue> &Ops,
SelectionDAG &DAG) const override;
+ unsigned getInlineAsmMemConstraint(
+ const std::string &ConstraintCode) const override {
+ if (ConstraintCode == "Q")
+ return InlineAsm::Constraint_Q;
+ // FIXME: clang has code for 'Ump', 'Utf', 'Usa', and 'Ush' but these are
+ // followed by llvm_unreachable so we'll leave them unimplemented in
+ // the backend for now.
+ return TargetLowering::getInlineAsmMemConstraint(ConstraintCode);
+ }
+
bool isUsedByReturnOnly(SDNode *N, SDValue &Chain) const override;
bool mayBeEmittedAsTailCall(CallInst *CI) const override;
bool getIndexedAddressParts(SDNode *Op, SDValue &Base, SDValue &Offset,
void ReplaceNodeResults(SDNode *N, SmallVectorImpl<SDValue> &Results,
SelectionDAG &DAG) const override;
+
+ bool functionArgumentNeedsConsecutiveRegisters(Type *Ty,
+ CallingConv::ID CallConv,
+ bool isVarArg) const override;
};
namespace AArch64 {
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