regset.h File Reference

Go to the source code of this file.

Typedefs
typedef bitmap_head	regset_head
typedef bitmap	regset
typedef bitmap_iterator	reg_set_iterator

Functions
void	reg_set_to_hard_reg_set (HARD_REG_SET *, const_bitmap)
void	dump_regset (regset, FILE *)

Variables
regset	regs_invalidated_by_call_regset
regset	fixed_reg_set_regset
bitmap_obstack	reg_obstack

---

Typedef Documentation

typedef bitmap_iterator reg_set_iterator

typedef bitmap regset

A pointer to a regset_head.   

typedef bitmap_head regset_head

TODO: regset is just a bitmap in its implementation.  The compiler does
   not consistently use one or the other, i.e. sometimes variables are
   declared as bitmap but they are actually regsets and regset accessors
   are used, and vice versa, or mixed (see e.g. spilled_regs in IRA).

   This should be cleaned up, either by just dropping the regset type, or
   by changing all bitmaps that are really regsets to the regset type.  For
   the latter option, a good start would be to change everything allocated
   on the reg_obstack to regset.   

Head of register set linked list.   

---

Function Documentation

void dump_regset	(	regset	,
		FILE *
	)

In df-core.c (which should use regset consistently instead of bitmap...)   

void reg_set_to_hard_reg_set	(	HARD_REG_SET *	,
		const_bitmap
	)

Copy the hard registers in a register set to the hard register set.   

---

Variable Documentation

regset fixed_reg_set_regset

Same information as FIXED_REG_SET but in regset form.   

Referenced by copy_fixed_regs().

bitmap_obstack reg_obstack

An obstack for regsets.   

The obstack on which regsets are allocated.   

Referenced by assign_by_spills(), assign_spill_hard_regs(), calculate_bb_reg_pressure(), calculate_loop_reg_pressure(), can_move_insns_across(), dead_or_predicable(), dse_step0(), dse_step1(), expand_function(), find_exits(), init_deps_global(), initialize_lra_reg_info_element(), lra(), lra_assign(), lra_coalesce(), lra_constraints(), lra_eliminate(), lra_inheritance(), lra_undo_inheritance(), peephole2_optimize(), remove_scratches(), replace_read(), simplify_using_initial_values(), spill_pseudos(), undo_optional_reloads(), and update_bad_spill_attribute().

regset regs_invalidated_by_call_regset

 @verbatim Same information as REGS_INVALIDATED_BY_CALL but in regset form to be used

in dataflow more conveniently.

Same information as REGS_INVALIDATED_BY_CALL but in regset form to be used
   in dataflow more conveniently.   

Referenced by df_lr_confluence_n(), df_md_confluence_n(), df_rd_local_compute(), and df_scan_start_dump().