callregs_t Class Reference

Detailed Description

Register allocation calling convention.

(allocation policy, arrays of GP and FP registers)

Public Attributes
argreg_policy_t	policy
	argument policy
int	nregs
	max number of registers that can be used in a call
intvec_t	gpregs
	array of gp registers
intvec_t	fpregs
	array of fp registers

Public Member Functions
	callregs_t ()
	Constructor.
	callregs_t (cm_t cc)
	Constructor - initialize with the given request (see init_regs())
void	swap (callregs_t &r)
	swap two instances
void	init_regs (cm_t cc)
	Init policy & registers for given CC.
bool	by_slots () const
void	set (argreg_policy_t _policy, const int *gprs, const int *fprs)
	Init policy & registers (arrays are -1-terminated)
void	set_registers (reg_kind_t kind, int first_reg, int last_reg)
void	reset ()
	Set policy and registers to invalid values.
bool	reginds (int *gp_ind, int *fp_ind, int r) const
	Get register indexes within GP/FP arrays. More...

Static Public Member Functions
static int	regcount (cm_t cc)
	Get max number of registers may be used in a function call.
static int	findreg (const intvec_t &regs, int r)

Public Types
enum	reg_kind_t { GPREGS , FPREGS }
	Init registers (sequential)

Protected Member Functions
bool	findregs (int *gp_ind, int *fp_ind, int r, const intvec_t &gprs, const intvec_t &fprs) const
	Search for register r in gprs and fprs. More...

Member Function Documentation

reginds()

bool callregs_t::reginds ( int *  gp_ind, int *  fp_ind, int  r  ) const

inline

Get register indexes within GP/FP arrays.

(-1 -> is not present in the corresponding array)

findregs()

bool callregs_t::findregs ( int *  gp_ind, int *  fp_ind, int  r, const intvec_t &  gprs, const intvec_t &  fprs  ) const

inlineprotected

Search for register r in gprs and fprs.

If found, fill gp_ind and fp_ind based on policy

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The documentation for this class was generated from the following file:

• typeinf.hpp