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reload.c (find_reloads_subreg_address): Add address_reloaded parameter and return true there if... 

2011-03-24  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	* reload.c (find_reloads_subreg_address): Add address_reloaded
	parameter and return true there if the full address has been
	reloaded.
	(find_reloads_toplev): Pass address_reloaded flag.
	(find_reloads_address_1): Don't use address_reloaded parameter.

From-SVN: r171413
This commit is contained in:
Andreas Krebbel 2011-03-24 16:50:31 +00:00 committed by Andreas Krebbel
parent 111eeb6ee5
commit ccecd6ea88
2 changed files with 24 additions and 10 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2011-03-24 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* reload.c (find_reloads_subreg_address): Add address_reloaded
parameter and return true there if the full address has been
reloaded.
(find_reloads_toplev): Pass address_reloaded flag.
(find_reloads_address_1): Don't use address_reloaded parameter.
2011-03-24 Jeff Law <law@redhat.com> 2011-03-24 Jeff Law <law@redhat.com>
* tree-ssa-live.c (remove_unused_scope_block_p): Remove set but * tree-ssa-live.c (remove_unused_scope_block_p): Remove set but

26
gcc/reload.c
View File

@ -285,7 +285,7 @@ static void find_reloads_address_part (rtx, rtx *, enum reg_class,
enum machine_mode, int, enum machine_mode, int,
enum reload_type, int); enum reload_type, int);
static rtx find_reloads_subreg_address (rtx, int, int, enum reload_type, static rtx find_reloads_subreg_address (rtx, int, int, enum reload_type,
int, rtx); int, rtx, int *);
static void copy_replacements_1 (rtx *, rtx *, int); static void copy_replacements_1 (rtx *, rtx *, int);
static int find_inc_amount (rtx, rtx); static int find_inc_amount (rtx, rtx);
static int refers_to_mem_for_reload_p (rtx); static int refers_to_mem_for_reload_p (rtx);
@ -4759,7 +4759,7 @@ find_reloads_toplev (rtx x, int opnum, enum reload_type type,
|| ! offsettable_memref_p (reg_equiv_mem[regno]) || ! offsettable_memref_p (reg_equiv_mem[regno])
|| num_not_at_initial_offset)))) || num_not_at_initial_offset))))
x = find_reloads_subreg_address (x, 1, opnum, type, ind_levels, x = find_reloads_subreg_address (x, 1, opnum, type, ind_levels,
insn); insn, address_reloaded);
} }
for (copied = 0, i = GET_RTX_LENGTH (code) - 1; i >= 0; i--) for (copied = 0, i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
@ -5995,7 +5995,7 @@ find_reloads_address_1 (enum machine_mode mode, rtx x, int context,
{ {
x = find_reloads_subreg_address (x, 0, opnum, x = find_reloads_subreg_address (x, 0, opnum,
ADDR_TYPE (type), ADDR_TYPE (type),
ind_levels, insn); ind_levels, insn, NULL);
push_reload (x, NULL_RTX, loc, (rtx*) 0, rclass, push_reload (x, NULL_RTX, loc, (rtx*) 0, rclass,
GET_MODE (x), VOIDmode, 0, 0, opnum, type); GET_MODE (x), VOIDmode, 0, 0, opnum, type);
return 1; return 1;
@ -6097,9 +6097,11 @@ find_reloads_address_part (rtx x, rtx *loc, enum reg_class rclass,
static rtx static rtx
find_reloads_subreg_address (rtx x, int force_replace, int opnum, find_reloads_subreg_address (rtx x, int force_replace, int opnum,
enum reload_type type, int ind_levels, rtx insn) enum reload_type type, int ind_levels, rtx insn,
int *address_reloaded)
{ {
int regno = REGNO (SUBREG_REG (x)); int regno = REGNO (SUBREG_REG (x));
int reloaded = 0;
if (reg_equiv_memory_loc[regno]) if (reg_equiv_memory_loc[regno])
{ {
@ -6123,7 +6125,6 @@ find_reloads_subreg_address (rtx x, int force_replace, int opnum,
unsigned inner_size = GET_MODE_SIZE (GET_MODE (SUBREG_REG (x))); unsigned inner_size = GET_MODE_SIZE (GET_MODE (SUBREG_REG (x)));
int offset; int offset;
rtx orig = tem; rtx orig = tem;
int reloaded;
/* For big-endian paradoxical subregs, SUBREG_BYTE does not /* For big-endian paradoxical subregs, SUBREG_BYTE does not
hold the correct (negative) byte offset. */ hold the correct (negative) byte offset. */
@ -6192,11 +6193,13 @@ find_reloads_subreg_address (rtx x, int force_replace, int opnum,
&& !strict_memory_address_addr_space_p && !strict_memory_address_addr_space_p
(GET_MODE (x), XEXP (reg_equiv_mem[regno], 0), (GET_MODE (x), XEXP (reg_equiv_mem[regno], 0),
MEM_ADDR_SPACE (reg_equiv_mem[regno]))) MEM_ADDR_SPACE (reg_equiv_mem[regno])))
push_reload (XEXP (tem, 0), NULL_RTX, &XEXP (tem, 0), (rtx*) 0, {
base_reg_class (GET_MODE (tem), MEM, SCRATCH), push_reload (XEXP (tem, 0), NULL_RTX, &XEXP (tem, 0), (rtx*) 0,
GET_MODE (XEXP (tem, 0)), VOIDmode, 0, 0, base_reg_class (GET_MODE (tem), MEM, SCRATCH),
opnum, type); GET_MODE (XEXP (tem, 0)), VOIDmode, 0, 0,
opnum, type);
reloaded = 1;
}
/* If this is not a toplevel operand, find_reloads doesn't see /* If this is not a toplevel operand, find_reloads doesn't see
this substitution. We have to emit a USE of the pseudo so this substitution. We have to emit a USE of the pseudo so
that delete_output_reload can see it. */ that delete_output_reload can see it. */
@ -6211,6 +6214,9 @@ find_reloads_subreg_address (rtx x, int force_replace, int opnum,
} }
} }
} }
if (reloaded && address_reloaded)
*address_reloaded = 1;
return x; return x;
} }