/* Variable tracking routines for the GNU compiler.
- Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
+ Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
This file is part of GCC.
switch (GET_CODE (*loc))
{
case REG:
- if (cselib_lookup (*loc, GET_MODE (SUBREG_REG (subreg)), 0))
+ if (cselib_lookup (*loc, GET_MODE (SUBREG_REG (subreg)), 0, VOIDmode))
+ return 1;
+ if (!validate_subreg (GET_MODE (subreg), GET_MODE (*loc),
+ *loc, subreg_lowpart_offset (GET_MODE (subreg),
+ GET_MODE (*loc))))
return 1;
return -1;
case PLUS:
&& hard_frame_pointer_adjustment != -1
&& cfa_base_rtx)
return compute_cfa_pointer (hard_frame_pointer_adjustment);
+ gcc_checking_assert (loc != virtual_incoming_args_rtx);
return loc;
case MEM:
mem = loc;
subsequent rounds. */
cselib_val *v;
gcc_assert (!cselib_lookup (node->loc,
- GET_MODE (node->loc), 0));
- v = cselib_lookup (node->loc, GET_MODE (node->loc), 1);
+ GET_MODE (node->loc), 0,
+ VOIDmode));
+ v = cselib_lookup (node->loc, GET_MODE (node->loc), 1,
+ VOIDmode);
cselib_preserve_value (v);
cselib_invalidate_rtx (node->loc);
cval = v->val_rtx;
VALUE_RECURSED_INTO (val) = true;
for (node = var->var_part[0].loc_chain; node; node = node->next)
- if (MEM_P (node->loc) && MEM_EXPR (node->loc) == expr
- && MEM_OFFSET (node->loc) == 0)
+ if (MEM_P (node->loc)
+ && MEM_EXPR (node->loc) == expr
+ && INT_MEM_OFFSET (node->loc) == 0)
{
where = node;
break;
{
for (loc = var->var_part[0].loc_chain; loc; loc = loc->next)
{
- /* We want to remove dying MEMs that doesn't refer to
- DECL. */
+ /* We want to remove dying MEMs that doesn't refer to DECL. */
if (GET_CODE (loc->loc) == MEM
&& (MEM_EXPR (loc->loc) != decl
- || MEM_OFFSET (loc->loc))
+ || INT_MEM_OFFSET (loc->loc) != 0)
&& !mem_dies_at_call (loc->loc))
break;
/* We want to move here MEMs that do refer to DECL. */
if (GET_CODE (loc->loc) != MEM
|| (MEM_EXPR (loc->loc) == decl
- && MEM_OFFSET (loc->loc) == 0)
+ && INT_MEM_OFFSET (loc->loc) == 0)
|| !mem_dies_at_call (loc->loc))
{
if (old_loc != loc->loc && emit_notes)
if (cui->sets)
{
/* This is called after uses are set up and before stores are
- processed bycselib, so it's safe to look up srcs, but not
+ processed by cselib, so it's safe to look up srcs, but not
dsts. So we look up expressions that appear in srcs or in
dest expressions, but we search the sets array for dests of
stores. */
if (cui->store_p)
{
+ /* Some targets represent memset and memcpy patterns
+ by (set (mem:BLK ...) (reg:[QHSD]I ...)) or
+ (set (mem:BLK ...) (const_int ...)) or
+ (set (mem:BLK ...) (mem:BLK ...)). Don't return anything
+ in that case, otherwise we end up with mode mismatches. */
+ if (mode == BLKmode && MEM_P (x))
+ return NULL;
for (i = 0; i < cui->n_sets; i++)
if (cui->sets[i].dest == x)
return cui->sets[i].src_elt;
}
else
- return cselib_lookup (x, mode, 0);
+ return cselib_lookup (x, mode, 0, VOIDmode);
}
return NULL;
else if (MEM_P (loc))
{
cselib_val *addr = cselib_lookup (XEXP (loc, 0),
- get_address_mode (loc), 0);
+ get_address_mode (loc), 0,
+ GET_MODE (loc));
if (addr)
return replace_equiv_address_nv (loc, addr->val_rtx);
else
return NULL;
}
else
- return cselib_subst_to_values (loc);
+ return cselib_subst_to_values (loc, VOIDmode);
}
/* Determine what kind of micro operation to choose for a USE. Return
rtx ploc = PAT_VAR_LOCATION_LOC (loc);
if (! VAR_LOC_UNKNOWN_P (ploc))
{
- cselib_val *val = cselib_lookup (ploc, GET_MODE (loc), 1);
+ cselib_val *val = cselib_lookup (ploc, GET_MODE (loc), 1,
+ VOIDmode);
/* ??? flag_float_store and volatile mems are never
given values, but we could in theory use them for
if (REG_P (loc)
|| (find_use_val (loc, GET_MODE (loc), cui)
&& cselib_lookup (XEXP (loc, 0),
- get_address_mode (loc), 0)))
+ get_address_mode (loc), 0,
+ GET_MODE (loc))))
return MO_VAL_SET;
}
else
rtx mloc = vloc;
enum machine_mode address_mode = get_address_mode (mloc);
cselib_val *val
- = cselib_lookup (XEXP (mloc, 0), address_mode, 0);
+ = cselib_lookup (XEXP (mloc, 0), address_mode, 0,
+ GET_MODE (mloc));
if (val && !cselib_preserved_value_p (val))
{
micro_operation moa;
preserve_value (val);
- mloc = cselib_subst_to_values (XEXP (mloc, 0));
+ mloc = cselib_subst_to_values (XEXP (mloc, 0),
+ GET_MODE (mloc));
moa.type = MO_VAL_USE;
moa.insn = cui->insn;
moa.u.loc = gen_rtx_CONCAT (address_mode,
rtx mloc = oloc;
enum machine_mode address_mode = get_address_mode (mloc);
cselib_val *val
- = cselib_lookup (XEXP (mloc, 0), address_mode, 0);
+ = cselib_lookup (XEXP (mloc, 0), address_mode, 0,
+ GET_MODE (mloc));
if (val && !cselib_preserved_value_p (val))
{
micro_operation moa;
preserve_value (val);
- mloc = cselib_subst_to_values (XEXP (mloc, 0));
+ mloc = cselib_subst_to_values (XEXP (mloc, 0),
+ GET_MODE (mloc));
moa.type = MO_VAL_USE;
moa.insn = cui->insn;
moa.u.loc = gen_rtx_CONCAT (address_mode,
if (!SCALAR_INT_MODE_P (GET_MODE (src)) || XEXP (src, 0) == cfa_base_rtx)
return NULL_RTX;
- v = cselib_lookup (XEXP (src, 0), GET_MODE (XEXP (src, 0)), 0);
+ v = cselib_lookup (XEXP (src, 0), GET_MODE (XEXP (src, 0)), 0, VOIDmode);
if (!v || !cselib_preserved_value_p (v))
return NULL_RTX;
rtx mloc = loc;
enum machine_mode address_mode = get_address_mode (mloc);
cselib_val *val = cselib_lookup (XEXP (mloc, 0),
- address_mode, 0);
+ address_mode, 0,
+ GET_MODE (mloc));
if (val && !cselib_preserved_value_p (val))
{
preserve_value (val);
mo.type = MO_VAL_USE;
- mloc = cselib_subst_to_values (XEXP (mloc, 0));
+ mloc = cselib_subst_to_values (XEXP (mloc, 0),
+ GET_MODE (mloc));
mo.u.loc = gen_rtx_CONCAT (address_mode, val->val_rtx, mloc);
mo.insn = cui->insn;
if (dump_file && (dump_flags & TDF_DETAILS))
if (GET_CODE (PATTERN (cui->insn)) == COND_EXEC)
{
- cselib_val *oval = cselib_lookup (oloc, GET_MODE (oloc), 0);
+ cselib_val *oval = cselib_lookup (oloc, GET_MODE (oloc), 0, VOIDmode);
gcc_assert (oval != v);
gcc_assert (REG_P (oloc) || MEM_P (oloc));
if (offset)
return;
- val = cselib_lookup (var_lowpart (mode, incoming), mode, true);
+ val = cselib_lookup (var_lowpart (mode, incoming), mode, true,
+ VOIDmode);
/* ??? Float-typed values in memory are not handled by
cselib. */
frame_pointer_needed
? hard_frame_pointer_rtx : stack_pointer_rtx);
val = cselib_lookup_from_insn (cfa_base_rtx, GET_MODE (cfa_base_rtx), 1,
- get_insns ());
+ VOIDmode, get_insns ());
preserve_value (val);
cselib_preserve_cfa_base_value (val, REGNO (cfa_base_rtx));
var_reg_decl_set (&VTI (ENTRY_BLOCK_PTR)->out, cfa_base_rtx,
static bool
gate_handle_var_tracking (void)
{
- return (flag_var_tracking);
+ return (flag_var_tracking && !targetm.delay_vartrack);
}
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