struct function *);
static struct temp_slot *find_temp_slot_from_address (rtx);
static void put_reg_into_stack (struct function *, rtx, tree, enum machine_mode,
- enum machine_mode, int, unsigned int, int, htab_t);
+ unsigned int, bool, bool, bool, htab_t);
static void schedule_fixup_var_refs (struct function *, rtx, tree, enum machine_mode,
htab_t);
static void fixup_var_refs (rtx, enum machine_mode, int, rtx, htab_t);
ALIGN controls the amount of alignment for the address of the slot:
0 means according to MODE,
-1 means use BIGGEST_ALIGNMENT and round size to multiple of that,
+ -2 means use BITS_PER_UNIT,
positive specifies alignment boundary in bits.
We do not round to stack_boundary here.
alignment = BIGGEST_ALIGNMENT / BITS_PER_UNIT;
size = CEIL_ROUND (size, alignment);
}
+ else if (align == -2)
+ alignment = 1; /* BITS_PER_UNIT / BITS_PER_UNIT */
else
alignment = align / BITS_PER_UNIT;
enum machine_mode promoted_mode, decl_mode;
struct function *function = 0;
tree context;
- int can_use_addressof;
- int volatilep = TREE_CODE (decl) != SAVE_EXPR && TREE_THIS_VOLATILE (decl);
- int usedp = (TREE_USED (decl)
+ bool can_use_addressof_p;
+ bool volatile_p = TREE_CODE (decl) != SAVE_EXPR && TREE_THIS_VOLATILE (decl);
+ bool used_p = (TREE_USED (decl)
|| (TREE_CODE (decl) != SAVE_EXPR && DECL_INITIAL (decl) != 0));
context = decl_function_context (decl);
/* If this variable lives in the current function and we don't need to put it
in the stack for the sake of setjmp or the non-locality, try to keep it in
a register until we know we actually need the address. */
- can_use_addressof
+ can_use_addressof_p
= (function == 0
&& ! (TREE_CODE (decl) != SAVE_EXPR && DECL_NONLOCAL (decl))
&& optimize > 0
/* If we can't use ADDRESSOF, make sure we see through one we already
generated. */
- if (! can_use_addressof && GET_CODE (reg) == MEM
+ if (! can_use_addressof_p
+ && GET_CODE (reg) == MEM
&& GET_CODE (XEXP (reg, 0)) == ADDRESSOF)
reg = XEXP (XEXP (reg, 0), 0);
if (GET_CODE (reg) == REG)
{
- if (can_use_addressof)
+ if (can_use_addressof_p)
gen_mem_addressof (reg, decl, rescan);
else
- put_reg_into_stack (function, reg, TREE_TYPE (decl), promoted_mode,
- decl_mode, volatilep, 0, usedp, 0);
+ put_reg_into_stack (function, reg, TREE_TYPE (decl), decl_mode,
+ 0, volatile_p, used_p, false, 0);
/* If this was previously a MEM but we've removed the ADDRESSOF,
set this address into that MEM so we always use the same
#ifdef FRAME_GROWS_DOWNWARD
/* Since part 0 should have a lower address, do it second. */
put_reg_into_stack (function, hipart, part_type, part_mode,
- part_mode, volatilep, 0, 0, 0);
+ 0, volatile_p, false, false, 0);
put_reg_into_stack (function, lopart, part_type, part_mode,
- part_mode, volatilep, 0, 0, 0);
+ 0, volatile_p, false, true, 0);
#else
put_reg_into_stack (function, lopart, part_type, part_mode,
- part_mode, volatilep, 0, 0, 0);
+ 0, volatile_p, false, false, 0);
put_reg_into_stack (function, hipart, part_type, part_mode,
- part_mode, volatilep, 0, 0, 0);
+ 0, volatile_p, false, true, 0);
#endif
/* Change the CONCAT into a combined MEM for both parts. */
/* Prevent sharing of rtl that might lose. */
if (GET_CODE (XEXP (reg, 0)) == PLUS)
XEXP (reg, 0) = copy_rtx (XEXP (reg, 0));
- if (usedp && rescan)
+ if (used_p && rescan)
{
schedule_fixup_var_refs (function, reg, TREE_TYPE (decl),
promoted_mode, 0);
/* Subroutine of put_var_into_stack. This puts a single pseudo reg REG
into the stack frame of FUNCTION (0 means the current function).
+ TYPE is the user-level data type of the value hold in the register.
DECL_MODE is the machine mode of the user-level data type.
- PROMOTED_MODE is the machine mode of the register.
- VOLATILE_P is nonzero if this is for a "volatile" decl.
- USED_P is nonzero if this reg might have already been used in an insn. */
+ ORIGINAL_REGNO must be set if the real regno is not visible in REG.
+ VOLATILE_P is true if this is for a "volatile" decl.
+ USED_P is true if this reg might have already been used in an insn.
+ CONSECUTIVE_P is true if the stack slot assigned to reg must be
+ consecutive with the previous stack slot. */
static void
put_reg_into_stack (struct function *function, rtx reg, tree type,
- enum machine_mode promoted_mode,
- enum machine_mode decl_mode, int volatile_p,
- unsigned int original_regno, int used_p, htab_t ht)
+ enum machine_mode decl_mode, unsigned int original_regno,
+ bool volatile_p, bool used_p, bool consecutive_p,
+ htab_t ht)
{
struct function *func = function ? function : cfun;
- rtx new = 0;
+ enum machine_mode mode = GET_MODE (reg);
unsigned int regno = original_regno;
+ rtx new = 0;
if (regno == 0)
regno = REGNO (reg);
}
if (new == 0)
- new = assign_stack_local_1 (decl_mode, GET_MODE_SIZE (decl_mode), 0, func);
+ new = assign_stack_local_1 (decl_mode, GET_MODE_SIZE (decl_mode),
+ consecutive_p ? -2 : 0, func);
PUT_CODE (reg, MEM);
PUT_MODE (reg, decl_mode);
}
if (used_p)
- schedule_fixup_var_refs (function, reg, type, promoted_mode, ht);
+ schedule_fixup_var_refs (function, reg, type, mode, ht);
}
/* Make sure that all refs to the variable, previously made
put_addressof_into_stack (rtx r, htab_t ht)
{
tree decl, type;
- int volatile_p, used_p;
+ bool volatile_p, used_p;
rtx reg = XEXP (r, 0);
else
{
type = NULL_TREE;
- volatile_p = 0;
- used_p = 1;
+ volatile_p = false;
+ used_p = true;
}
- put_reg_into_stack (0, reg, type, GET_MODE (reg), GET_MODE (reg),
- volatile_p, ADDRESSOF_REGNO (r), used_p, ht);
+ put_reg_into_stack (0, reg, type, GET_MODE (reg), ADDRESSOF_REGNO (r),
+ volatile_p, used_p, false, ht);
}
/* List of replacements made below in purge_addressof_1 when creating
projects / gcc.git / commitdiff