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basic-block.h (safe_insert_insn_on_edge): Removed.

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2006-04-26  Kenneth Zadeck <zadeck@naturalbridge.com>

	* basic-block.h (safe_insert_insn_on_edge): Removed.
	* cfgrtl.c (mark_killed_regs, safe_insert_insn_on_edge): Removed.

From-SVN: r113276
This commit is contained in:
Kenneth Zadeck 2006-04-26 16:17:01 +00:00 committed by Kenneth Zadeck
parent 7b282ff9a0
commit 3bf7d5e771
3 changed files with 6 additions and 104 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2006-04-26 Kenneth Zadeck <zadeck@naturalbridge.com>
* basic-block.h (safe_insert_insn_on_edge): Removed.
* cfgrtl.c (mark_killed_regs, safe_insert_insn_on_edge): Removed.
2006-04-26 David Edelsohn <edelsohn@gnu.org>
Paolo Bonzini <bonzini@gnu.org>

1
gcc/basic-block.h
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@ -486,7 +486,6 @@ extern void update_bb_for_insn (basic_block);
extern void free_basic_block_vars (void);
extern void insert_insn_on_edge (rtx, edge);
bool safe_insert_insn_on_edge (rtx, edge);
extern void commit_edge_insertions (void);
extern void commit_edge_insertions_watch_calls (void);

103
gcc/cfgrtl.c
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@ -77,7 +77,6 @@ static edge rtl_redirect_edge_and_branch (edge, basic_block);
static basic_block rtl_split_block (basic_block, void *);
static void rtl_dump_bb (basic_block, FILE *, int);
static int rtl_verify_flow_info_1 (void);
static void mark_killed_regs (rtx, rtx, void *);
static void rtl_make_forwarder_block (edge);
/* Return true if NOTE is not one of the ones that must be kept paired,
@ -1337,108 +1336,6 @@ insert_insn_on_edge (rtx pattern, edge e)
end_sequence ();
}
/* Called from safe_insert_insn_on_edge through note_stores, marks live
registers that are killed by the store. */
static void
mark_killed_regs (rtx reg, rtx set ATTRIBUTE_UNUSED, void *data)
{
regset killed = data;
int regno, i;
if (GET_CODE (reg) == SUBREG)
reg = SUBREG_REG (reg);
if (!REG_P (reg))
return;
regno = REGNO (reg);
if (regno >= FIRST_PSEUDO_REGISTER)
SET_REGNO_REG_SET (killed, regno);
else
{
for (i = 0; i < (int) hard_regno_nregs[regno][GET_MODE (reg)]; i++)
SET_REGNO_REG_SET (killed, regno + i);
}
}
/* Similar to insert_insn_on_edge, tries to put INSN to edge E. Additionally
it checks whether this will not clobber the registers that are live on the
edge (i.e. it requires liveness information to be up-to-date) and if there
are some, then it tries to save and restore them. Returns true if
successful. */
bool
safe_insert_insn_on_edge (rtx insn, edge e)
{
rtx x;
regset killed;
rtx save_regs = NULL_RTX;
unsigned regno;
enum machine_mode mode;
reg_set_iterator rsi;
killed = ALLOC_REG_SET (&reg_obstack);
for (x = insn; x; x = NEXT_INSN (x))
if (INSN_P (x))
note_stores (PATTERN (x), mark_killed_regs, killed);
/* Mark all hard registers as killed. Register allocator/reload cannot
cope with the situation when life range of hard register spans operation
for that the appropriate register is needed, i.e. it would be unsafe to
extend the life ranges of hard registers. */
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
if (!fixed_regs[regno]
&& !REGNO_PTR_FRAME_P (regno))
SET_REGNO_REG_SET (killed, regno);
bitmap_and_into (killed, e->dest->il.rtl->global_live_at_start);
EXECUTE_IF_SET_IN_REG_SET (killed, 0, regno, rsi)
{
mode = regno < FIRST_PSEUDO_REGISTER
? reg_raw_mode[regno]
: GET_MODE (regno_reg_rtx[regno]);
if (mode == VOIDmode)
return false;
/* Avoid copying in CCmode if we can't. */
if (!can_copy_p (mode))
return false;
save_regs = alloc_EXPR_LIST (0,
alloc_EXPR_LIST (0,
gen_reg_rtx (mode),
gen_raw_REG (mode, regno)),
save_regs);
}
if (save_regs)
{
rtx from, to;
start_sequence ();
for (x = save_regs; x; x = XEXP (x, 1))
{
from = XEXP (XEXP (x, 0), 1);
to = XEXP (XEXP (x, 0), 0);
emit_move_insn (to, from);
}
emit_insn (insn);
for (x = save_regs; x; x = XEXP (x, 1))
{
from = XEXP (XEXP (x, 0), 0);
to = XEXP (XEXP (x, 0), 1);
emit_move_insn (to, from);
}
insn = get_insns ();
end_sequence ();
free_EXPR_LIST_list (&save_regs);
}
insert_insn_on_edge (insn, e);
FREE_REG_SET (killed);
return true;
}
/* Update the CFG for the instructions queued on edge E. */
static void