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Functions
INITIALIZE_PASS (HexagonCallFrameInformation, "hexagon-cfi", "Hexagon call frame information", false, false) FunctionPass *llvm
static Register
getMax32BitSubRegister (Register Reg , const TargetRegisterInfo &TRI , bool hireg=true)
Map a register pair Reg to the subregister that has the greater "number", i.e.
static Register
getMaxCalleeSavedReg (ArrayRef < CalleeSavedInfo > CSI, const TargetRegisterInfo &TRI )
Returns the callee saved register with the largest id in the vector.
static bool
needsStackFrame (const MachineBasicBlock &MBB , const BitVector &CSR, const HexagonRegisterInfo &HRI)
Checks if the basic block contains any instruction that needs a stack frame to be already in place.
static bool
hasTailCall (const MachineBasicBlock &MBB )
Returns true if MBB has a machine instructions that indicates a tail call in the block.
static bool
hasReturn (const MachineBasicBlock &MBB )
Returns true if MBB contains an instruction that returns.
static MachineInstr *
getReturn (MachineBasicBlock &MBB )
Returns the "return" instruction from this block, or nullptr if there isn't any.
static bool
isRestoreCall (unsigned Opc )
static bool
isOptNone (const MachineFunction &MF)
static bool
isOptSize (const MachineFunction &MF)
static bool
isMinSize (const MachineFunction &MF)
static bool
enableAllocFrameElim (const MachineFunction &MF)
static std::optional< MachineBasicBlock::iterator >
findCFILocation (MachineBasicBlock &B )
static const char *
getSpillFunctionFor (Register MaxReg, SpillKind SpillType, bool Stkchk=false)
static bool
needToReserveScavengingSpillSlots (MachineFunction &MF, const HexagonRegisterInfo &HRI, const TargetRegisterClass *RC)
Returns true if there are no caller-saved registers available in class RC.
static void
dump_registers (BitVector &Regs, const TargetRegisterInfo &TRI )
Variables
static cl::opt < bool >
DisableDeallocRet ("disable-hexagon-dealloc-ret", cl::Hidden, cl::desc ("Disable Dealloc Return for Hexagon target"))
static cl::opt < unsigned >
NumberScavengerSlots ("number-scavenger-slots", cl::Hidden, cl::desc ("Set the number of scavenger slots"), cl::init(2))
static cl::opt < int >
SpillFuncThreshold ("spill-func-threshold", cl::Hidden, cl::desc ("Specify O2(not Os) spill func threshold"), cl::init(6))
static cl::opt < int >
SpillFuncThresholdOs ("spill-func-threshold-Os", cl::Hidden, cl::desc ("Specify Os spill func threshold"), cl::init(1))
static cl::opt < bool >
EnableStackOVFSanitizer ("enable-stackovf-sanitizer", cl::Hidden, cl::desc ("Enable runtime checks for stack overflow."), cl::init(false))
static cl::opt < bool >
EnableShrinkWrapping ("hexagon-shrink-frame", cl::init(true), cl::Hidden, cl::desc ("Enable stack frame shrink wrapping"))
static cl::opt < unsigned >
ShrinkLimit ("shrink-frame-limit", cl::init(std::numeric_limits< unsigned >::max()), cl::Hidden, cl::desc ("Max count of stack frame shrink-wraps"))
static cl::opt < bool >
EnableSaveRestoreLong ("enable-save-restore-long", cl::Hidden, cl::desc ("Enable long calls for save-restore stubs."), cl::init(false))
static cl::opt < bool >
EliminateFramePointer ("hexagon-fp-elim", cl::init(true), cl::Hidden, cl::desc ("Refrain from using FP whenever possible"))
static cl::opt < bool >
OptimizeSpillSlots ("hexagon-opt -spill", cl::Hidden, cl::init(true), cl::desc ("Optimize spill slots"))
static cl::opt < unsigned >
SpillOptMax ("spill-opt -max", cl::Hidden, cl::init(std::numeric_limits< unsigned >::max()))
static unsigned
SpillOptCount = 0
◆ DEBUG_TYPE#define DEBUG_TYPE "hexagon-pei"
◆ SpillKind◆ dump_registers()◆ enableAllocFrameElim()◆ findCFILocation()◆ getMax32BitSubRegister()◆ getMaxCalleeSavedReg()◆ getReturn()◆ getSpillFunctionFor()◆ hasReturn()◆ hasTailCall()Returns true if MBB has a machine instructions that indicates a tail call in the block.
Definition at line 331 of file HexagonFrameLowering.cpp .
References I , and MBB .
◆ INITIALIZE_PASS()
INITIALIZE_PASS
(
HexagonCallFrameInformation
,
"hexagon-cfi"
,
"Hexagon call frame information"
,
false
,
false
)
◆ isMinSize()◆ isOptNone()◆ isOptSize()◆ isRestoreCall()◆ needsStackFrame()◆ needToReserveScavengingSpillSlots()◆ DisableDeallocRet
cl::opt < bool > DisableDeallocRet("disable-hexagon-dealloc-ret", cl::Hidden, cl::desc ("Disable Dealloc Return for Hexagon target")) ( "disable-hexagon-dealloc-ret" , cl::Hidden , cl::desc ("Disable Dealloc Return for Hexagon target") )static
◆ EliminateFramePointer
cl::opt < bool > EliminateFramePointer("hexagon-fp-elim", cl::init(true), cl::Hidden, cl::desc ("Refrain from using FP whenever possible")) ( "hexagon-fp-elim" , cl::init(true) , cl::Hidden , cl::desc ("Refrain from using FP whenever possible") )static
◆ EnableSaveRestoreLong
cl::opt < bool > EnableSaveRestoreLong("enable-save-restore-long", cl::Hidden, cl::desc ("Enable long calls for save-restore stubs."), cl::init(false)) ( "enable-save-restore-long" , cl::Hidden , cl::desc ("Enable long calls for save-restore stubs.") , cl::init(false) )static
◆ EnableShrinkWrapping
cl::opt < bool > EnableShrinkWrapping("hexagon-shrink-frame", cl::init(true), cl::Hidden, cl::desc ("Enable stack frame shrink wrapping")) ( "hexagon-shrink-frame" , cl::init(true) , cl::Hidden , cl::desc ("Enable stack frame shrink wrapping") )static
◆ EnableStackOVFSanitizer
cl::opt < bool > EnableStackOVFSanitizer("enable-stackovf-sanitizer", cl::Hidden, cl::desc ("Enable runtime checks for stack overflow."), cl::init(false)) ( "enable-stackovf-sanitizer" , cl::Hidden , cl::desc ("Enable runtime checks for stack overflow.") , cl::init(false) )static
◆ NumberScavengerSlots
cl::opt < unsigned > NumberScavengerSlots("number-scavenger-slots", cl::Hidden, cl::desc ("Set the number of scavenger slots"), cl::init(2)) ( "number-scavenger-slots" , cl::Hidden , cl::desc ("Set the number of scavenger slots") , cl::init(2) )static
◆ OptimizeSpillSlots
cl::opt < bool > OptimizeSpillSlots("hexagon-opt -spill", cl::Hidden, cl::init(true), cl::desc ("Optimize spill slots")) ( "hexagon-opt -spill" , cl::Hidden , cl::init(true) , cl::desc ("Optimize spill slots") )static
◆ ShrinkLimit
cl::opt < unsigned > ShrinkLimit("shrink-frame-limit", cl::init(std::numeric_limits< unsigned >::max()), cl::Hidden, cl::desc ("Max count of stack frame shrink-wraps")) ( "shrink-frame-limit" , cl::init(std::numeric_limits< unsigned >::max()) , cl::Hidden , cl::desc ("Max count of stack frame shrink-wraps") )static
◆ SpillFuncThreshold
cl::opt < int > SpillFuncThreshold("spill-func-threshold", cl::Hidden, cl::desc ("Specify O2(not Os) spill func threshold"), cl::init(6)) ( "spill-func-threshold" , cl::Hidden , cl::desc ("Specify O2(not Os) spill func threshold") , cl::init(6) )static
◆ SpillFuncThresholdOs
cl::opt < int > SpillFuncThresholdOs("spill-func-threshold-Os", cl::Hidden, cl::desc ("Specify Os spill func threshold"), cl::init(1)) ( "spill-func-threshold-Os" , cl::Hidden , cl::desc ("Specify Os spill func threshold") , cl::init(1) )static
◆ SpillOptCount◆ SpillOptMax
cl::opt < unsigned > SpillOptMax("spill-opt -max", cl::Hidden, cl::init(std::numeric_limits< unsigned >::max())) ( "spill-opt -max" , cl::Hidden , cl::init(std::numeric_limits< unsigned >::max()) )static