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-rw-r--r--llvm/lib/Target/AArch64/AArch64InstrInfo.h99
1 files changed, 73 insertions, 26 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.h b/llvm/lib/Target/AArch64/AArch64InstrInfo.h
index 66e517e549035..298c04d81708d 100644
--- a/llvm/lib/Target/AArch64/AArch64InstrInfo.h
+++ b/llvm/lib/Target/AArch64/AArch64InstrInfo.h
@@ -19,6 +19,7 @@
#include "llvm/ADT/Optional.h"
#include "llvm/CodeGen/MachineCombinerPattern.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
+#include "llvm/Support/TypeSize.h"
#define GET_INSTRINFO_HEADER
#include "AArch64GenInstrInfo.inc"
@@ -51,8 +52,8 @@ public:
bool isAsCheapAsAMove(const MachineInstr &MI) const override;
- bool isCoalescableExtInstr(const MachineInstr &MI, unsigned &SrcReg,
- unsigned &DstReg, unsigned &SubIdx) const override;
+ bool isCoalescableExtInstr(const MachineInstr &MI, Register &SrcReg,
+ Register &DstReg, unsigned &SubIdx) const override;
bool
areMemAccessesTriviallyDisjoint(const MachineInstr &MIa,
@@ -112,14 +113,19 @@ public:
/// Hint that pairing the given load or store is unprofitable.
static void suppressLdStPair(MachineInstr &MI);
- bool getMemOperandWithOffset(const MachineInstr &MI,
- const MachineOperand *&BaseOp,
- int64_t &Offset,
- const TargetRegisterInfo *TRI) const override;
+ bool getMemOperandsWithOffsetWidth(
+ const MachineInstr &MI, SmallVectorImpl<const MachineOperand *> &BaseOps,
+ int64_t &Offset, bool &OffsetIsScalable, unsigned &Width,
+ const TargetRegisterInfo *TRI) const override;
+ /// If \p OffsetIsScalable is set to 'true', the offset is scaled by `vscale`.
+ /// This is true for some SVE instructions like ldr/str that have a
+ /// 'reg + imm' addressing mode where the immediate is an index to the
+ /// scalable vector located at 'reg + imm * vscale x #bytes'.
bool getMemOperandWithOffsetWidth(const MachineInstr &MI,
const MachineOperand *&BaseOp,
- int64_t &Offset, unsigned &Width,
+ int64_t &Offset, bool &OffsetIsScalable,
+ unsigned &Width,
const TargetRegisterInfo *TRI) const;
/// Return the immediate offset of the base register in a load/store \p LdSt.
@@ -129,12 +135,12 @@ public:
/// \p Scale, \p Width, \p MinOffset, and \p MaxOffset accordingly.
///
/// For unscaled instructions, \p Scale is set to 1.
- static bool getMemOpInfo(unsigned Opcode, unsigned &Scale, unsigned &Width,
+ static bool getMemOpInfo(unsigned Opcode, TypeSize &Scale, unsigned &Width,
int64_t &MinOffset, int64_t &MaxOffset);
- bool shouldClusterMemOps(const MachineOperand &BaseOp1,
- const MachineOperand &BaseOp2,
- unsigned NumLoads) const override;
+ bool shouldClusterMemOps(ArrayRef<const MachineOperand *> BaseOps1,
+ ArrayRef<const MachineOperand *> BaseOps2,
+ unsigned NumLoads, unsigned NumBytes) const override;
void copyPhysRegTuple(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
const DebugLoc &DL, MCRegister DestReg,
@@ -149,13 +155,13 @@ public:
bool KillSrc) const override;
void storeRegToStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MBBI, unsigned SrcReg,
+ MachineBasicBlock::iterator MBBI, Register SrcReg,
bool isKill, int FrameIndex,
const TargetRegisterClass *RC,
const TargetRegisterInfo *TRI) const override;
void loadRegFromStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MBBI, unsigned DestReg,
+ MachineBasicBlock::iterator MBBI, Register DestReg,
int FrameIndex, const TargetRegisterClass *RC,
const TargetRegisterInfo *TRI) const override;
@@ -191,11 +197,12 @@ public:
bool
reverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const override;
bool canInsertSelect(const MachineBasicBlock &, ArrayRef<MachineOperand> Cond,
- unsigned, unsigned, int &, int &, int &) const override;
+ Register, Register, Register, int &, int &,
+ int &) const override;
void insertSelect(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
- const DebugLoc &DL, unsigned DstReg,
- ArrayRef<MachineOperand> Cond, unsigned TrueReg,
- unsigned FalseReg) const override;
+ const DebugLoc &DL, Register DstReg,
+ ArrayRef<MachineOperand> Cond, Register TrueReg,
+ Register FalseReg) const override;
void getNoop(MCInst &NopInst) const override;
bool isSchedulingBoundary(const MachineInstr &MI,
@@ -205,13 +212,13 @@ public:
/// analyzeCompare - For a comparison instruction, return the source registers
/// in SrcReg and SrcReg2, and the value it compares against in CmpValue.
/// Return true if the comparison instruction can be analyzed.
- bool analyzeCompare(const MachineInstr &MI, unsigned &SrcReg,
- unsigned &SrcReg2, int &CmpMask,
+ bool analyzeCompare(const MachineInstr &MI, Register &SrcReg,
+ Register &SrcReg2, int &CmpMask,
int &CmpValue) const override;
/// optimizeCompareInstr - Convert the instruction supplying the argument to
/// the comparison into one that sets the zero bit in the flags register.
- bool optimizeCompareInstr(MachineInstr &CmpInstr, unsigned SrcReg,
- unsigned SrcReg2, int CmpMask, int CmpValue,
+ bool optimizeCompareInstr(MachineInstr &CmpInstr, Register SrcReg,
+ Register SrcReg2, int CmpMask, int CmpValue,
const MachineRegisterInfo *MRI) const override;
bool optimizeCondBranch(MachineInstr &MI) const override;
@@ -264,6 +271,8 @@ public:
MachineBasicBlock::iterator &It, MachineFunction &MF,
const outliner::Candidate &C) const override;
bool shouldOutlineFromFunctionByDefault(MachineFunction &MF) const override;
+ /// Returns the vector element size (B, H, S or D) of an SVE opcode.
+ uint64_t getElementSizeForOpcode(unsigned Opc) const;
/// Returns true if the instruction has a shift by immediate that can be
/// executed in one cycle less.
static bool isFalkorShiftExtFast(const MachineInstr &MI);
@@ -288,6 +297,8 @@ protected:
isCopyInstrImpl(const MachineInstr &MI) const override;
private:
+ unsigned getInstBundleLength(const MachineInstr &MI) const;
+
/// Sets the offsets on outlined instructions in \p MBB which use SP
/// so that they will be valid post-outlining.
///
@@ -305,6 +316,12 @@ private:
unsigned findRegisterToSaveLRTo(const outliner::Candidate &C) const;
};
+/// Return true if there is an instruction /after/ \p DefMI and before \p UseMI
+/// which either reads or clobbers NZCV.
+bool isNZCVTouchedInInstructionRange(const MachineInstr &DefMI,
+ const MachineInstr &UseMI,
+ const TargetRegisterInfo *TRI);
+
/// emitFrameOffset - Emit instructions as needed to set DestReg to SrcReg
/// plus Offset. This is intended to be used from within the prolog/epilog
/// insertion (PEI) pass, where a virtual scratch register may be allocated
@@ -369,12 +386,24 @@ static inline bool isCondBranchOpcode(int Opc) {
}
static inline bool isIndirectBranchOpcode(int Opc) {
- return Opc == AArch64::BR;
+ switch (Opc) {
+ case AArch64::BR:
+ case AArch64::BRAA:
+ case AArch64::BRAB:
+ case AArch64::BRAAZ:
+ case AArch64::BRABZ:
+ return true;
+ }
+ return false;
}
+/// Return opcode to be used for indirect calls.
+unsigned getBLRCallOpcode(const MachineFunction &MF);
+
// struct TSFlags {
#define TSFLAG_ELEMENT_SIZE_TYPE(X) (X) // 3-bits
-#define TSFLAG_DESTRUCTIVE_INST_TYPE(X) ((X) << 3) // 1-bit
+#define TSFLAG_DESTRUCTIVE_INST_TYPE(X) ((X) << 3) // 4-bit
+#define TSFLAG_FALSE_LANE_TYPE(X) ((X) << 7) // 2-bits
// }
namespace AArch64 {
@@ -389,13 +418,31 @@ enum ElementSizeType {
};
enum DestructiveInstType {
- DestructiveInstTypeMask = TSFLAG_DESTRUCTIVE_INST_TYPE(0x1),
- NotDestructive = TSFLAG_DESTRUCTIVE_INST_TYPE(0x0),
- Destructive = TSFLAG_DESTRUCTIVE_INST_TYPE(0x1),
+ DestructiveInstTypeMask = TSFLAG_DESTRUCTIVE_INST_TYPE(0xf),
+ NotDestructive = TSFLAG_DESTRUCTIVE_INST_TYPE(0x0),
+ DestructiveOther = TSFLAG_DESTRUCTIVE_INST_TYPE(0x1),
+ DestructiveUnary = TSFLAG_DESTRUCTIVE_INST_TYPE(0x2),
+ DestructiveBinaryImm = TSFLAG_DESTRUCTIVE_INST_TYPE(0x3),
+ DestructiveBinaryShImmUnpred = TSFLAG_DESTRUCTIVE_INST_TYPE(0x4),
+ DestructiveBinary = TSFLAG_DESTRUCTIVE_INST_TYPE(0x5),
+ DestructiveBinaryComm = TSFLAG_DESTRUCTIVE_INST_TYPE(0x6),
+ DestructiveBinaryCommWithRev = TSFLAG_DESTRUCTIVE_INST_TYPE(0x7),
+ DestructiveTernaryCommWithRev = TSFLAG_DESTRUCTIVE_INST_TYPE(0x8),
+};
+
+enum FalseLaneType {
+ FalseLanesMask = TSFLAG_FALSE_LANE_TYPE(0x3),
+ FalseLanesZero = TSFLAG_FALSE_LANE_TYPE(0x1),
+ FalseLanesUndef = TSFLAG_FALSE_LANE_TYPE(0x2),
};
#undef TSFLAG_ELEMENT_SIZE_TYPE
#undef TSFLAG_DESTRUCTIVE_INST_TYPE
+#undef TSFLAG_FALSE_LANE_TYPE
+
+int getSVEPseudoMap(uint16_t Opcode);
+int getSVERevInstr(uint16_t Opcode);
+int getSVENonRevInstr(uint16_t Opcode);
}
} // end namespace llvm
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-30 18:35:43 +0000