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rtl.h (REG_NREGS): New macro

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	* rtl.h (REG_NREGS): New macro
	* alias.c (record_set): Use it.
	* cfgcleanup.c (mark_effect): Likewise.
	* combine.c (likely_spilled_retval_1): Likewise.
	(likely_spilled_retval_p, can_change_dest_mode): Likewise.
	(move_deaths, distribute_notes): Likewise.
	* cselib.c (cselib_record_set): Likewise.
	* df-problems.c (df_simulate_one_insn_forwards): Likewise.
	* df-scan.c (df_mark_reg): Likewise.
	* dse.c (look_for_hardregs): Likewise.
	* dwarf2out.c (reg_loc_descriptor): Likewise.
	(multiple_reg_loc_descriptor): Likewise.
	* expr.c (write_complex_part, read_complex_part): Likewise.
	(emit_move_complex): Likewise.
	* haifa-sched.c (setup_ref_regs): Likewise.
	* ira-lives.c (mark_hard_reg_live): Likewise.
	* lra.c (lra_set_insn_recog_data): Likewise.
	* mode-switching.c (create_pre_exit): Likewise.
	* postreload.c (reload_combine_recognize_const_pattern): Likewise.
	(reload_combine_recognize_pattern): Likewise.
	(reload_combine_note_use, move2add_record_mode): Likewise.
	(reload_cse_move2add): Likewise.
	* reg-stack.c (subst_stack_regs_pat): Likewise.
	* regcprop.c (kill_value, copy_value): Likewise.
	(copyprop_hardreg_forward_1): Likewise.
	* regrename.c (verify_reg_in_set, scan_rtx_reg): Likewise.
	(build_def_use): Likewise.
	* sched-deps.c (mark_insn_reg_birth, mark_reg_death): Likewise.
	(deps_analyze_insn): Likewise.
	* sched-rgn.c (check_live_1, update_live_1): Likewise.
	* sel-sched.c (count_occurrences_equiv): Likewise.
	* valtrack.c (dead_debug_insert_temp): Likewise.

From-SVN: r223337
This commit is contained in:
Richard Sandiford 2015-05-19 07:09:06 +00:00 committed by Richard Sandiford
parent 53d1bae901
commit dc8afb709d
23 changed files with 89 additions and 88 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
gcc/ChangeLog
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@ -1,3 +1,38 @@
2015-05-19 Richard Sandiford <richard.sandiford@arm.com>
* rtl.h (REG_NREGS): New macro
* alias.c (record_set): Use it.
* cfgcleanup.c (mark_effect): Likewise.
* combine.c (likely_spilled_retval_1): Likewise.
(likely_spilled_retval_p, can_change_dest_mode): Likewise.
(move_deaths, distribute_notes): Likewise.
* cselib.c (cselib_record_set): Likewise.
* df-problems.c (df_simulate_one_insn_forwards): Likewise.
* df-scan.c (df_mark_reg): Likewise.
* dse.c (look_for_hardregs): Likewise.
* dwarf2out.c (reg_loc_descriptor): Likewise.
(multiple_reg_loc_descriptor): Likewise.
* expr.c (write_complex_part, read_complex_part): Likewise.
(emit_move_complex): Likewise.
* haifa-sched.c (setup_ref_regs): Likewise.
* ira-lives.c (mark_hard_reg_live): Likewise.
* lra.c (lra_set_insn_recog_data): Likewise.
* mode-switching.c (create_pre_exit): Likewise.
* postreload.c (reload_combine_recognize_const_pattern): Likewise.
(reload_combine_recognize_pattern): Likewise.
(reload_combine_note_use, move2add_record_mode): Likewise.
(reload_cse_move2add): Likewise.
* reg-stack.c (subst_stack_regs_pat): Likewise.
* regcprop.c (kill_value, copy_value): Likewise.
(copyprop_hardreg_forward_1): Likewise.
* regrename.c (verify_reg_in_set, scan_rtx_reg): Likewise.
(build_def_use): Likewise.
* sched-deps.c (mark_insn_reg_birth, mark_reg_death): Likewise.
(deps_analyze_insn): Likewise.
* sched-rgn.c (check_live_1, update_live_1): Likewise.
* sel-sched.c (count_occurrences_equiv): Likewise.
* valtrack.c (dead_debug_insert_temp): Likewise.
2015-05-19 Richard Sandiford <richard.sandiford@arm.com>
* cfgcleanup.c (mentions_nonequal_regs): Use END_REGNO.

7
gcc/alias.c
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@ -1298,12 +1298,7 @@ record_set (rtx dest, const_rtx set, void *data ATTRIBUTE_UNUSED)
gcc_checking_assert (regno < reg_base_value->length ());
/* If this spans multiple hard registers, then we must indicate that every
register has an unusable value. */
if (regno < FIRST_PSEUDO_REGISTER)
n = hard_regno_nregs[regno][GET_MODE (dest)];
else
n = 1;
n = REG_NREGS (dest);
if (n != 1)
{
while (--n >= 0)

6
gcc/cfgcleanup.c
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@ -234,8 +234,7 @@ mark_effect (rtx exp, regset nonequal)
dest = XEXP (exp, 0);
regno = REGNO (dest);
if (HARD_REGISTER_NUM_P (regno))
bitmap_clear_range (nonequal, regno,
hard_regno_nregs[regno][GET_MODE (dest)]);
bitmap_clear_range (nonequal, regno, REG_NREGS (dest));
else
bitmap_clear_bit (nonequal, regno);
}
@ -251,8 +250,7 @@ mark_effect (rtx exp, regset nonequal)
return true;
regno = REGNO (dest);
if (HARD_REGISTER_NUM_P (regno))
bitmap_set_range (nonequal, regno,
hard_regno_nregs[regno][GET_MODE (dest)]);
bitmap_set_range (nonequal, regno, REG_NREGS (dest));
else
bitmap_set_bit (nonequal, regno);
return false;

12
gcc/combine.c
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@ -2364,7 +2364,7 @@ likely_spilled_retval_1 (rtx x, const_rtx set, void *data)
regno = REGNO (x);
if (regno >= info->regno + info->nregs)
return;
nregs = hard_regno_nregs[regno][GET_MODE (x)];
nregs = REG_NREGS (x);
if (regno + nregs <= info->regno)
return;
new_mask = (2U << (nregs - 1)) - 1;
@ -2399,7 +2399,7 @@ likely_spilled_retval_p (rtx_insn *insn)
if (!REG_P (reg) || !targetm.calls.function_value_regno_p (REGNO (reg)))
return 0;
regno = REGNO (reg);
nregs = hard_regno_nregs[regno][GET_MODE (reg)];
nregs = REG_NREGS (reg);
if (nregs == 1)
return 0;
mask = (2U << (nregs - 1)) - 1;
@ -2471,8 +2471,7 @@ can_change_dest_mode (rtx x, int added_sets, machine_mode mode)
registers than the old mode. */
if (regno < FIRST_PSEUDO_REGISTER)
return (HARD_REGNO_MODE_OK (regno, mode)
&& (hard_regno_nregs[regno][GET_MODE (x)]
>= hard_regno_nregs[regno][mode]));
&& REG_NREGS (x) >= hard_regno_nregs[regno][mode]);
/* Or a pseudo that is only used once. */
return (regno < reg_n_sets_max
@ -13474,7 +13473,7 @@ move_deaths (rtx x, rtx maybe_kill_insn, int from_luid, rtx_insn *to_insn,
&& (GET_MODE_SIZE (GET_MODE (XEXP (note, 0)))
< GET_MODE_SIZE (GET_MODE (x)))))
&& regno < FIRST_PSEUDO_REGISTER
&& hard_regno_nregs[regno][GET_MODE (x)] > 1)
&& REG_NREGS (x) > 1)
{
unsigned int ourend = END_HARD_REGNO (x);
unsigned int i, offset;
@ -14069,8 +14068,7 @@ distribute_notes (rtx notes, rtx_insn *from_insn, rtx_insn *i3, rtx_insn *i2,
be dead; so we recourse, and the recursive call then finds
the previous insn that used this register. */
if (place && regno < FIRST_PSEUDO_REGISTER
&& hard_regno_nregs[regno][GET_MODE (XEXP (note, 0))] > 1)
if (place && REG_NREGS (XEXP (note, 0)) > 1)
{
unsigned int endregno = END_HARD_REGNO (XEXP (note, 0));
bool all_used = true;

7
gcc/cselib.c
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@ -2371,16 +2371,15 @@ cselib_invalidate_rtx_note_stores (rtx dest, const_rtx ignore ATTRIBUTE_UNUSED,
static void
cselib_record_set (rtx dest, cselib_val *src_elt, cselib_val *dest_addr_elt)
{
int dreg = REG_P (dest) ? (int) REGNO (dest) : -1;
if (src_elt == 0 || side_effects_p (dest))
return;
if (dreg >= 0)
if (REG_P (dest))
{
unsigned int dreg = REGNO (dest);
if (dreg < FIRST_PSEUDO_REGISTER)
{
unsigned int n = hard_regno_nregs[dreg][GET_MODE (dest)];
unsigned int n = REG_NREGS (dest);
if (n > max_value_regs)
max_value_regs = n;

3
gcc/df-problems.c
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@ -3576,8 +3576,7 @@ df_simulate_one_insn_forwards (basic_block bb, rtx_insn *insn, bitmap live)
rtx reg = XEXP (link, 0);
int regno = REGNO (reg);
if (HARD_REGISTER_NUM_P (regno))
bitmap_clear_range (live, regno,
hard_regno_nregs[regno][GET_MODE (reg)]);
bitmap_clear_range (live, regno, REG_NREGS (reg));
else
bitmap_clear_bit (live, regno);
}

5
gcc/df-scan.c
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@ -3516,10 +3516,7 @@ df_mark_reg (rtx reg, void *vset)
gcc_assert (GET_MODE (reg) != BLKmode);
if (regno < FIRST_PSEUDO_REGISTER)
{
int n = hard_regno_nregs[regno][GET_MODE (reg)];
bitmap_set_range (set, regno, n);
}
bitmap_set_range (set, regno, REG_NREGS (reg));
else
bitmap_set_bit (set, regno);
}

6
gcc/dse.c
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@ -1876,11 +1876,7 @@ look_for_hardregs (rtx x, const_rtx pat ATTRIBUTE_UNUSED, void *data)
if (REG_P (x)
&& HARD_REGISTER_P (x))
{
unsigned int regno = REGNO (x);
bitmap_set_range (regs_set, regno,
hard_regno_nregs[regno][GET_MODE (x)]);
}
bitmap_set_range (regs_set, REGNO (x), REG_NREGS (x));
}
/* Helper function for replace_read and record_store.

4
gcc/dwarf2out.c
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@ -11147,7 +11147,7 @@ reg_loc_descriptor (rtx rtl, enum var_init_status initialized)
regs = targetm.dwarf_register_span (rtl);
if (hard_regno_nregs[REGNO (rtl)][GET_MODE (rtl)] > 1 || regs)
if (REG_NREGS (rtl) > 1 || regs)
return multiple_reg_loc_descriptor (rtl, regs, initialized);
else
{
@ -11204,7 +11204,7 @@ multiple_reg_loc_descriptor (rtx rtl, rtx regs,
#endif
gcc_assert ((unsigned) DBX_REGISTER_NUMBER (reg) == dbx_reg_number (rtl));
nregs = hard_regno_nregs[REGNO (rtl)][GET_MODE (rtl)];
nregs = REG_NREGS (rtl);
size = GET_MODE_SIZE (GET_MODE (rtl)) / nregs;

8
gcc/expr.c
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@ -3051,7 +3051,7 @@ write_complex_part (rtx cplx, rtx val, bool imag_p)
where the natural size of floating-point regs is 32-bit. */
|| (REG_P (cplx)
&& REGNO (cplx) < FIRST_PSEUDO_REGISTER
&& hard_regno_nregs[REGNO (cplx)][cmode] % 2 == 0))
&& REG_NREGS (cplx) % 2 == 0))
{
rtx part = simplify_gen_subreg (imode, cplx, cmode,
imag_p ? GET_MODE_SIZE (imode) : 0);
@ -3116,7 +3116,7 @@ read_complex_part (rtx cplx, bool imag_p)
where the natural size of floating-point regs is 32-bit. */
|| (REG_P (cplx)
&& REGNO (cplx) < FIRST_PSEUDO_REGISTER
&& hard_regno_nregs[REGNO (cplx)][cmode] % 2 == 0))
&& REG_NREGS (cplx) % 2 == 0))
{
rtx ret = simplify_gen_subreg (imode, cplx, cmode,
imag_p ? GET_MODE_SIZE (imode) : 0);
@ -3346,10 +3346,10 @@ emit_move_complex (machine_mode mode, rtx x, rtx y)
&& optab_handler (mov_optab, GET_MODE_INNER (mode)) != CODE_FOR_nothing
&& !(REG_P (x)
&& HARD_REGISTER_P (x)
&& hard_regno_nregs[REGNO (x)][mode] == 1)
&& REG_NREGS (x) == 1)
&& !(REG_P (y)
&& HARD_REGISTER_P (y)
&& hard_regno_nregs[REGNO (y)][mode] == 1))
&& REG_NREGS (y) == 1))
try_int = false;
/* Not possible if the values are inherently not adjacent. */
else if (GET_CODE (x) == CONCAT || GET_CODE (y) == CONCAT)

3
gcc/haifa-sched.c
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@ -1040,8 +1040,7 @@ setup_ref_regs (rtx x)
{
regno = REGNO (x);
if (HARD_REGISTER_NUM_P (regno))
bitmap_set_range (region_ref_regs, regno,
hard_regno_nregs[regno][GET_MODE (x)]);
bitmap_set_range (region_ref_regs, regno, REG_NREGS (x));
else
bitmap_set_bit (region_ref_regs, REGNO (x));
return;

2
gcc/ira-lives.c
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@ -352,7 +352,7 @@ mark_hard_reg_live (rtx reg)
if (! TEST_HARD_REG_BIT (ira_no_alloc_regs, regno))
{
int last = regno + hard_regno_nregs[regno][GET_MODE (reg)];
int last = END_REGNO (reg);
enum reg_class aclass, pclass;
while (regno < last)

5
gcc/lra.c
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@ -1104,10 +1104,7 @@ lra_set_insn_recog_data (rtx_insn *insn)
regno = REGNO (XEXP (XEXP (link, 0), 0));
lra_assert (regno < FIRST_PSEUDO_REGISTER);
/* It is an argument register. */
for (i = (hard_regno_nregs
[regno][GET_MODE (XEXP (XEXP (link, 0), 0))]) - 1;
i >= 0;
i--)
for (i = REG_NREGS (XEXP (XEXP (link, 0), 0)) - 1; i >= 0; i--)
arg_hard_regs[n_hard_regs++] = regno + i;
}
if (n_hard_regs != 0)

2
gcc/mode-switching.c
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@ -267,7 +267,7 @@ create_pre_exit (int n_entities, int *entity_map, const int *num_modes)
&& GET_CODE ((ret_reg = XEXP (PATTERN (last_insn), 0))) == REG)
{
int ret_start = REGNO (ret_reg);
int nregs = hard_regno_nregs[ret_start][GET_MODE (ret_reg)];
int nregs = REG_NREGS (ret_reg);
int ret_end = ret_start + nregs;
bool short_block = false;
bool multi_reg_return = false;

11
gcc/postreload.c
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@ -971,7 +971,7 @@ reload_combine_recognize_const_pattern (rtx_insn *insn)
reg = SET_DEST (set);
src = SET_SRC (set);
if (!REG_P (reg)
|| hard_regno_nregs[REGNO (reg)][GET_MODE (reg)] != 1
|| REG_NREGS (reg) != 1
|| GET_MODE (reg) != Pmode
|| reg == stack_pointer_rtx)
return false;
@ -1106,8 +1106,7 @@ reload_combine_recognize_pattern (rtx_insn *insn)
reg = SET_DEST (set);
src = SET_SRC (set);
if (!REG_P (reg)
|| hard_regno_nregs[REGNO (reg)][GET_MODE (reg)] != 1)
if (!REG_P (reg) || REG_NREGS (reg) != 1)
return false;
regno = REGNO (reg);
@ -1563,7 +1562,7 @@ reload_combine_note_use (rtx *xp, rtx_insn *insn, int ruid, rtx containing_mem)
/* No spurious USEs of pseudo registers may remain. */
gcc_assert (regno < FIRST_PSEUDO_REGISTER);
nregs = hard_regno_nregs[regno][GET_MODE (x)];
nregs = REG_NREGS (x);
/* We can't substitute into multi-hard-reg uses. */
if (nregs > 1)
@ -1695,7 +1694,7 @@ move2add_record_mode (rtx reg)
else if (REG_P (reg))
{
regno = REGNO (reg);
nregs = hard_regno_nregs[regno][mode];
nregs = REG_NREGS (reg);
}
else
gcc_unreachable ();
@ -2135,7 +2134,7 @@ reload_cse_move2add (rtx_insn *first)
number of calls to gen_rtx_SET to avoid memory
allocation if possible. */
&& SCALAR_INT_MODE_P (GET_MODE (XEXP (cnd, 0)))
&& hard_regno_nregs[REGNO (XEXP (cnd, 0))][GET_MODE (XEXP (cnd, 0))] == 1
&& REG_NREGS (XEXP (cnd, 0)) == 1
&& CONST_INT_P (XEXP (cnd, 1)))
{
rtx implicit_set =

3
gcc/reg-stack.c
View File

@ -1470,8 +1470,7 @@ subst_stack_regs_pat (rtx_insn *insn, stack_ptr regstack, rtx pat)
case CALL:
{
int count;
for (count = hard_regno_nregs[REGNO (*dest)][GET_MODE (*dest)];
--count >= 0;)
for (count = REG_NREGS (*dest); --count >= 0;)
{
regstack->reg[++regstack->top] = REGNO (*dest) + count;
SET_HARD_REG_BIT (regstack->reg_set, REGNO (*dest) + count);

14
gcc/regcprop.c
View File

@ -207,12 +207,7 @@ kill_value (const_rtx x, struct value_data *vd)
x = tmp ? tmp : SUBREG_REG (x);
}
if (REG_P (x))
{
unsigned int regno = REGNO (x);
unsigned int n = hard_regno_nregs[regno][GET_MODE (x)];
kill_value_regno (regno, n, vd);
}
kill_value_regno (REGNO (x), REG_NREGS (x), vd);
}
/* Remember that REGNO is valid in MODE. */
@ -333,8 +328,8 @@ copy_value (rtx dest, rtx src, struct value_data *vd)
return;
/* If SRC and DEST overlap, don't record anything. */
dn = hard_regno_nregs[dr][GET_MODE (dest)];
sn = hard_regno_nregs[sr][GET_MODE (dest)];
dn = REG_NREGS (dest);
sn = REG_NREGS (src);
if ((dr > sr && dr < sr + sn)
|| (sr > dr && sr < dr + dn))
return;
@ -1035,8 +1030,7 @@ copyprop_hardreg_forward_1 (basic_block bb, struct value_data *vd)
copy_value (dest, SET_SRC (x), vd);
ksvd.ignore_set_reg = dest;
set_regno = REGNO (dest);
set_nregs
= hard_regno_nregs[set_regno][GET_MODE (dest)];
set_nregs = REG_NREGS (dest);
break;
}
}

14
gcc/regrename.c
View File

@ -983,7 +983,7 @@ verify_reg_in_set (rtx op, HARD_REG_SET *pset)
return false;
regno = REGNO (op);
nregs = hard_regno_nregs[regno][GET_MODE (op)];
nregs = REG_NREGS (op);
all_live = all_dead = true;
while (nregs-- > 0)
if (TEST_HARD_REG_BIT (*pset, regno + nregs))
@ -1036,9 +1036,8 @@ scan_rtx_reg (rtx_insn *insn, rtx *loc, enum reg_class cl, enum scan_actions act
{
struct du_head **p;
rtx x = *loc;
machine_mode mode = GET_MODE (x);
unsigned this_regno = REGNO (x);
int this_nregs = hard_regno_nregs[this_regno][mode];
int this_nregs = REG_NREGS (x);
if (action == mark_write)
{
@ -1624,13 +1623,8 @@ build_def_use (basic_block bb)
&& !(untracked_operands & (1 << i))
&& REG_P (op)
&& !verify_reg_tracked (op))
{
machine_mode mode = GET_MODE (op);
unsigned this_regno = REGNO (op);
unsigned this_nregs = hard_regno_nregs[this_regno][mode];
create_new_chain (this_regno, this_nregs, NULL, NULL,
NO_REGS);
}
create_new_chain (REGNO (op), REG_NREGS (op), NULL, NULL,
NO_REGS);
}
if (fail_current_block)

8
gcc/rtl.h
View File

@ -1697,6 +1697,14 @@ inline rtx_insn *JUMP_LABEL_AS_INSN (const rtx_insn *insn)
(df_ref_change_reg_with_loc (REGNO (RTX), N, RTX), XCUINT (RTX, 0, REG) = N)
#define SET_REGNO_RAW(RTX,N) (XCUINT (RTX, 0, REG) = N)
/* Return the number of consecutive registers in a REG. This is always
1 for pseudo registers and is determined by HARD_REGNO_NREGS for
hard registers. */
#define REG_NREGS(RTX) \
(REGNO (RTX) < FIRST_PSEUDO_REGISTER \
? (unsigned int) hard_regno_nregs[REGNO (RTX)][GET_MODE (RTX)] \
: 1)
/* ORIGINAL_REGNO holds the number the register originally had; for a
pseudo register turned into a hard reg this will hold the old pseudo
register number. */

7
gcc/sched-deps.c
View File

@ -2125,8 +2125,7 @@ mark_insn_reg_birth (rtx insn, rtx reg, bool clobber_p, bool unused_p)
regno = REGNO (reg);
if (regno < FIRST_PSEUDO_REGISTER)
mark_insn_hard_regno_birth (insn, regno,
hard_regno_nregs[regno][GET_MODE (reg)],
mark_insn_hard_regno_birth (insn, regno, REG_NREGS (reg),
clobber_p, unused_p);
else
mark_insn_pseudo_birth (insn, regno, clobber_p, unused_p);
@ -2185,7 +2184,7 @@ mark_reg_death (rtx reg)
regno = REGNO (reg);
if (regno < FIRST_PSEUDO_REGISTER)
mark_hard_regno_death (regno, hard_regno_nregs[regno][GET_MODE (reg)]);
mark_hard_regno_death (regno, REG_NREGS (reg));
else
mark_pseudo_death (regno);
}
@ -3645,7 +3644,7 @@ deps_analyze_insn (struct deps_desc *deps, rtx_insn *insn)
rtx_insn_list *cond_deps = NULL;
t = XEXP (t, 0);
regno = REGNO (t);
nregs = hard_regno_nregs[regno][GET_MODE (t)];
nregs = REG_NREGS (t);
while (nregs-- > 0)
{
struct deps_reg *reg_last = &deps->reg_last[regno + nregs];

5
gcc/sched-rgn.c
View File

@ -1720,7 +1720,7 @@ check_live_1 (int src, rtx x)
if (regno < FIRST_PSEUDO_REGISTER)
{
/* Check for hard registers. */
int j = hard_regno_nregs[regno][GET_MODE (reg)];
int j = REG_NREGS (reg);
while (--j >= 0)
{
for (i = 0; i < candidate_table[src].split_bbs.nr_members; i++)
@ -1803,8 +1803,7 @@ update_live_1 (int src, rtx x)
basic_block b = candidate_table[src].update_bbs.first_member[i];
if (HARD_REGISTER_NUM_P (regno))
bitmap_set_range (df_get_live_in (b), regno,
hard_regno_nregs[regno][GET_MODE (reg)]);
bitmap_set_range (df_get_live_in (b), regno, REG_NREGS (reg));
else
bitmap_set_bit (df_get_live_in (b), regno);
}

4
gcc/sel-sched.c
View File

@ -825,9 +825,7 @@ count_occurrences_equiv (const_rtx what, const_rtx where)
{
/* Bail out if mode is different or more than one register is
used. */
if (GET_MODE (x) != GET_MODE (what)
|| (HARD_REGISTER_P (x)
&& hard_regno_nregs[REGNO (x)][GET_MODE (x)] > 1))
if (GET_MODE (x) != GET_MODE (what) || REG_NREGS (x) > 1)
return 0;
count += 1;
}

6
gcc/valtrack.c
View File

@ -671,9 +671,7 @@ dead_debug_insert_temp (struct dead_debug_local *debug, unsigned int uregno,
the debug temp to. ??? We could bind the debug_expr to a
CONCAT or PARALLEL with the split multi-registers, and
replace them as we found the corresponding sets. */
else if (REGNO (reg) < FIRST_PSEUDO_REGISTER
&& (hard_regno_nregs[REGNO (reg)][GET_MODE (reg)]
!= hard_regno_nregs[REGNO (reg)][GET_MODE (dest)]))
else if (REG_NREGS (reg) != REG_NREGS (dest))
breg = NULL;
/* Ok, it's the same (hardware) REG, but with a different
mode, so SUBREG it. */
@ -695,7 +693,7 @@ dead_debug_insert_temp (struct dead_debug_local *debug, unsigned int uregno,
setting REG in its mode would, we won't know what to bind
the debug temp to. */
else if (REGNO (reg) < FIRST_PSEUDO_REGISTER
&& (hard_regno_nregs[REGNO (reg)][GET_MODE (reg)]
&& (REG_NREGS (reg)
!= hard_regno_nregs[REGNO (reg)][GET_MODE (dest)]))
breg = NULL;
/* Yay, we can use SRC, just adjust its mode. */