combine-stack-adj.c File Reference

Data Structures
struct	csa_reflist
struct	record_stack_refs_data

Functions
static int	stack_memref_p (rtx)
static rtx	single_set_for_csa (rtx)
static void	free_csa_reflist (struct csa_reflist *)
static struct csa_reflist *	record_one_stack_ref (rtx, rtx *, struct csa_reflist *)
static int	try_apply_stack_adjustment (rtx, struct csa_reflist *, HOST_WIDE_INT, HOST_WIDE_INT)
static void	combine_stack_adjustments_for_block (basic_block)
static int	record_stack_refs (rtx *, void *)
static void	combine_stack_adjustments ()
static int	stack_memref_p ()
static rtx	single_set_for_csa ()
static void	free_csa_reflist ()
static struct csa_reflist *	record_one_stack_ref ()
static int	record_stack_refs ()
static void	maybe_move_args_size_note ()
static rtx	prev_active_insn_bb ()
static rtx	next_active_insn_bb ()
static void	force_move_args_size_note ()
static void	combine_stack_adjustments_for_block ()
static bool	gate_handle_stack_adjustments ()
static unsigned int	rest_of_handle_stack_adjustments ()
rtl_opt_pass *	make_pass_stack_adjustments ()

---

Function Documentation

static void combine_stack_adjustments ( )

static

Main entry point for stack adjustment combination.   

References combine_stack_adjustments_for_block().

Referenced by rest_of_handle_stack_adjustments().

static void combine_stack_adjustments_for_block ( basic_block  )

static

Referenced by combine_stack_adjustments().

static void combine_stack_adjustments_for_block ( )

static

Subroutine of combine_stack_adjustments, called for each basic block.   

References delete_insn(), for_each_rtx(), force_move_args_size_note(), free_csa_reflist(), HOST_WIDE_INT, csa_reflist::insn, record_stack_refs_data::insn, maybe_move_args_size_note(), csa_reflist::next, record_stack_refs(), record_stack_refs_data::reflist, reg_mentioned_p(), single_set_for_csa(), and try_apply_stack_adjustment().

static void force_move_args_size_note ( )

static

If INSN has a REG_ARGS_SIZE note, if possible move it to PREV.  Otherwise
   search for a nearby candidate within BB where we can stick the note.   

References add_reg_note(), emit_insn_before(), find_reg_note(), record_stack_refs_data::insn, insn_nothrow_p(), maybe_move_args_size_note(), next_active_insn_bb(), and prev_active_insn_bb().

Referenced by combine_stack_adjustments_for_block().

static void free_csa_reflist ( struct csa_reflist *  )

static

Referenced by combine_stack_adjustments_for_block().

static void free_csa_reflist ( )

static

Free the list of csa_reflist nodes.   

References free(), and csa_reflist::next.

static bool gate_handle_stack_adjustments ( )

static

rtl_opt_pass* make_pass_stack_adjustments

(

)

static void maybe_move_args_size_note ( )

static

If INSN has a REG_ARGS_SIZE note, move it to LAST.
   AFTER is true iff LAST follows INSN in the instruction stream.   

References add_reg_note(), and find_reg_note().

Referenced by combine_stack_adjustments_for_block(), and force_move_args_size_note().

static rtx next_active_insn_bb ( )

static

References active_insn_p().

Referenced by force_move_args_size_note().

static rtx prev_active_insn_bb ( )

static

Return the next (or previous) active insn within BB.   

References active_insn_p().

Referenced by force_move_args_size_note().

static struct csa_reflist* record_one_stack_ref ( rtx  , rtx *  , struct csa_reflist *    )

staticread

Referenced by record_stack_refs().

static struct csa_reflist* record_one_stack_ref ( )

staticread

Create a new csa_reflist node from the given stack reference.
   It is already known that the reference is either a MEM satisfying the
   predicate stack_memref_p or a REG representing the stack pointer.   

References csa_reflist::insn, csa_reflist::next, csa_reflist::ref, and csa_reflist::sp_offset.

static int record_stack_refs ( rtx *  , void *    )

static

Referenced by combine_stack_adjustments_for_block().

static int record_stack_refs ( )

static

References record_stack_refs_data::insn, record_one_stack_ref(), record_stack_refs_data::reflist, reg_mentioned_p(), and stack_memref_p().

static unsigned int rest_of_handle_stack_adjustments ( )

static

References combine_stack_adjustments(), df_analyze(), and df_note_add_problem().

static rtx single_set_for_csa ( rtx  )

static

Referenced by combine_stack_adjustments_for_block(), and try_apply_stack_adjustment().

static rtx single_set_for_csa ( )

static

Recognize either normal single_set or the hack in i386.md for
   tying fp and sp adjustments.   

References SET.

static int stack_memref_p ( rtx  )

static

Referenced by record_stack_refs().

static int stack_memref_p ( )

static

Recognize a MEM of the form (sp) or (plus sp const).   

static int try_apply_stack_adjustment ( rtx  insn, struct csa_reflist *  reflist, HOST_WIDE_INT  new_adjust, HOST_WIDE_INT  delta  )

static

Attempt to apply ADJUST to the stack adjusting insn INSN, as well
   as each of the memories and stack references in REFLIST.  Return true
   on success.   

References apply_change_group(), csa_reflist::insn, lowpart_subreg(), csa_reflist::next, plus_constant(), csa_reflist::ref, replace_equiv_address(), replace_equiv_address_nv(), single_set_for_csa(), csa_reflist::sp_offset, and validate_change().

Referenced by combine_stack_adjustments_for_block().