/* Register renaming for the GNU compiler.
- Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+ Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005
+ Free Software Foundation, Inc.
This file is part of GCC.
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
-#define REG_OK_STRICT
-
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "toplev.h"
#include "obstack.h"
-#ifndef REG_MODE_OK_FOR_BASE_P
-#define REG_MODE_OK_FOR_BASE_P(REGNO, MODE) REG_OK_FOR_BASE_P (REGNO)
-#endif
-
-static const char *const reg_class_names[] = REG_CLASS_NAMES;
-
struct du_chain
{
struct du_chain *next_chain;
rtx insn;
rtx *loc;
- ENUM_BITFIELD(reg_class) class : 16;
+ ENUM_BITFIELD(reg_class) cl : 16;
unsigned int need_caller_save_reg:1;
unsigned int earlyclobber:1;
};
HARD_REG_SET *pset = (HARD_REG_SET *) data;
unsigned int regno;
int nregs;
- if (GET_CODE (x) != REG)
+
+ if (GET_CODE (x) == SUBREG)
+ x = SUBREG_REG (x);
+ if (!REG_P (x))
return;
regno = REGNO (x);
- nregs = HARD_REGNO_NREGS (regno, GET_MODE (x));
+ nregs = hard_regno_nregs[regno][GET_MODE (x)];
/* There must not be pseudos at this point. */
- if (regno + nregs > FIRST_PSEUDO_REGISTER)
- abort ();
+ gcc_assert (regno + nregs <= FIRST_PSEUDO_REGISTER);
while (nregs-- > 0)
SET_HARD_REG_BIT (*pset, regno + nregs);
{
rtx reg = XEXP (note, 0);
unsigned int regno = REGNO (reg);
- int nregs = HARD_REGNO_NREGS (regno, GET_MODE (reg));
+ int nregs = hard_regno_nregs[regno][GET_MODE (reg)];
/* There must not be pseudos at this point. */
- if (regno + nregs > FIRST_PSEUDO_REGISTER)
- abort ();
+ gcc_assert (regno + nregs <= FIRST_PSEUDO_REGISTER);
while (nregs-- > 0)
CLEAR_HARD_REG_BIT (*pset, regno + nregs);
HARD_REG_SET live;
REG_SET_TO_HARD_REG_SET (live, b->global_live_at_start);
- insn = b->head;
+ insn = BB_HEAD (b);
while (t)
{
/* Search forward until the next reference to the register to be
CLEAR_HARD_REG_SET (unavailable);
- if (rtl_dump_file)
- fprintf (rtl_dump_file, "\nBasic block %d:\n", bb->index);
+ if (dump_file)
+ fprintf (dump_file, "\nBasic block %d:\n", bb->index);
all_chains = build_def_use (bb);
- if (rtl_dump_file)
+ if (dump_file)
dump_def_use_chain (all_chains);
CLEAR_HARD_REG_SET (unavailable);
{
int i;
- for (i = HARD_REGNO_NREGS (FRAME_POINTER_REGNUM, Pmode); i--;)
+ for (i = hard_regno_nregs[FRAME_POINTER_REGNUM][Pmode]; i--;)
SET_HARD_REG_BIT (unavailable, FRAME_POINTER_REGNUM + i);
#if FRAME_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM
- for (i = HARD_REGNO_NREGS (HARD_FRAME_POINTER_REGNUM, Pmode); i--;)
+ for (i = hard_regno_nregs[HARD_FRAME_POINTER_REGNUM][Pmode]; i--;)
SET_HARD_REG_BIT (unavailable, HARD_FRAME_POINTER_REGNUM + i);
#endif
}
{
n_uses++;
IOR_COMPL_HARD_REG_SET (this_unavailable,
- reg_class_contents[last->class]);
+ reg_class_contents[last->cl]);
}
if (n_uses < 1)
continue;
IOR_COMPL_HARD_REG_SET (this_unavailable,
- reg_class_contents[last->class]);
+ reg_class_contents[last->cl]);
if (this->need_caller_save_reg)
IOR_HARD_REG_SET (this_unavailable, call_used_reg_set);
have a closer look at each register still in there. */
for (new_reg = 0; new_reg < FIRST_PSEUDO_REGISTER; new_reg++)
{
- int nregs = HARD_REGNO_NREGS (new_reg, GET_MODE (*this->loc));
+ int nregs = hard_regno_nregs[new_reg][GET_MODE (*this->loc)];
for (i = nregs - 1; i >= 0; --i)
if (TEST_HARD_REG_BIT (this_unavailable, new_reg + i)
}
}
- if (rtl_dump_file)
+ if (dump_file)
{
- fprintf (rtl_dump_file, "Register %s in insn %d",
+ fprintf (dump_file, "Register %s in insn %d",
reg_names[reg], INSN_UID (last->insn));
if (last->need_caller_save_reg)
- fprintf (rtl_dump_file, " crosses a call");
+ fprintf (dump_file, " crosses a call");
}
if (best_new_reg == reg)
{
tick[reg] = ++this_tick;
- if (rtl_dump_file)
- fprintf (rtl_dump_file, "; no available better choice\n");
+ if (dump_file)
+ fprintf (dump_file, "; no available better choice\n");
continue;
}
do_replace (this, best_new_reg);
tick[best_new_reg] = ++this_tick;
+ regs_ever_live[best_new_reg] = 1;
- if (rtl_dump_file)
- fprintf (rtl_dump_file, ", renamed as %s\n", reg_names[best_new_reg]);
+ if (dump_file)
+ fprintf (dump_file, ", renamed as %s\n", reg_names[best_new_reg]);
}
obstack_free (&rename_obstack, first_obj);
obstack_free (&rename_obstack, NULL);
- if (rtl_dump_file)
- fputc ('\n', rtl_dump_file);
+ if (dump_file)
+ fputc ('\n', dump_file);
count_or_remove_death_notes (NULL, 1);
update_life_info (NULL, UPDATE_LIFE_LOCAL,
- PROP_REG_INFO | PROP_DEATH_NOTES);
+ PROP_DEATH_NOTES);
}
static void
static struct du_chain *closed_chains;
static void
-scan_rtx_reg (rtx insn, rtx *loc, enum reg_class class,
+scan_rtx_reg (rtx insn, rtx *loc, enum reg_class cl,
enum scan_actions action, enum op_type type, int earlyclobber)
{
struct du_chain **p;
rtx x = *loc;
enum machine_mode mode = GET_MODE (x);
int this_regno = REGNO (x);
- int this_nregs = HARD_REGNO_NREGS (this_regno, mode);
+ int this_nregs = hard_regno_nregs[this_regno][mode];
if (action == mark_write)
{
this->next_chain = open_chains;
this->loc = loc;
this->insn = insn;
- this->class = class;
+ this->cl = cl;
this->need_caller_save_reg = 0;
this->earlyclobber = earlyclobber;
open_chains = this;
else
{
int regno = REGNO (*this->loc);
- int nregs = HARD_REGNO_NREGS (regno, GET_MODE (*this->loc));
+ int nregs = hard_regno_nregs[regno][GET_MODE (*this->loc)];
int exact_match = (regno == this_regno && nregs == this_nregs);
if (regno + nregs <= this_regno
if (action == mark_read)
{
- if (! exact_match)
- abort ();
+ gcc_assert (exact_match);
/* ??? Class NO_REGS can happen if the md file makes use of
EXTRA_CONSTRAINTS to match registers. Which is arguably
wrong, but there we are. Since we know not what this may
be replaced with, terminate the chain. */
- if (class != NO_REGS)
+ if (cl != NO_REGS)
{
this = obstack_alloc (&rename_obstack, sizeof (struct du_chain));
this->next_use = 0;
this->next_chain = (*p)->next_chain;
this->loc = loc;
this->insn = insn;
- this->class = class;
+ this->cl = cl;
this->need_caller_save_reg = 0;
while (*p)
p = &(*p)->next_use;
{
this->next_chain = closed_chains;
closed_chains = this;
- if (rtl_dump_file)
- fprintf (rtl_dump_file,
+ if (dump_file)
+ fprintf (dump_file,
"Closing chain %s at insn %d (%s)\n",
reg_names[REGNO (*this->loc)], INSN_UID (insn),
scan_actions_name[(int) action]);
}
else
{
- if (rtl_dump_file)
- fprintf (rtl_dump_file,
+ if (dump_file)
+ fprintf (dump_file,
"Discarding chain %s at insn %d (%s)\n",
reg_names[REGNO (*this->loc)], INSN_UID (insn),
scan_actions_name[(int) action]);
}
}
-/* Adapted from find_reloads_address_1. CLASS is INDEX_REG_CLASS or
+/* Adapted from find_reloads_address_1. CL is INDEX_REG_CLASS or
BASE_REG_CLASS depending on how the register is being considered. */
static void
-scan_rtx_address (rtx insn, rtx *loc, enum reg_class class,
+scan_rtx_address (rtx insn, rtx *loc, enum reg_class cl,
enum scan_actions action, enum machine_mode mode)
{
rtx x = *loc;
rtx op1 = orig_op1;
rtx *locI = NULL;
rtx *locB = NULL;
+ rtx *locB_reg = NULL;
if (GET_CODE (op0) == SUBREG)
{
int index_op;
if (REG_OK_FOR_INDEX_P (op0)
- && REG_MODE_OK_FOR_BASE_P (op1, mode))
+ && REG_MODE_OK_FOR_REG_BASE_P (op1, mode))
index_op = 0;
else if (REG_OK_FOR_INDEX_P (op1)
- && REG_MODE_OK_FOR_BASE_P (op0, mode))
+ && REG_MODE_OK_FOR_REG_BASE_P (op0, mode))
index_op = 1;
- else if (REG_MODE_OK_FOR_BASE_P (op1, mode))
+ else if (REG_MODE_OK_FOR_REG_BASE_P (op1, mode))
index_op = 0;
- else if (REG_MODE_OK_FOR_BASE_P (op0, mode))
+ else if (REG_MODE_OK_FOR_REG_BASE_P (op0, mode))
index_op = 1;
else if (REG_OK_FOR_INDEX_P (op1))
index_op = 1;
index_op = 0;
locI = &XEXP (x, index_op);
- locB = &XEXP (x, !index_op);
+ locB_reg = &XEXP (x, !index_op);
}
else if (code0 == REG)
{
scan_rtx_address (insn, locI, INDEX_REG_CLASS, action, mode);
if (locB)
scan_rtx_address (insn, locB, MODE_BASE_REG_CLASS (mode), action, mode);
+ if (locB_reg)
+ scan_rtx_address (insn, locB_reg, MODE_BASE_REG_REG_CLASS (mode),
+ action, mode);
return;
}
return;
case REG:
- scan_rtx_reg (insn, loc, class, action, OP_IN, 0);
+ scan_rtx_reg (insn, loc, cl, action, OP_IN, 0);
return;
default:
for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
{
if (fmt[i] == 'e')
- scan_rtx_address (insn, &XEXP (x, i), class, action, mode);
+ scan_rtx_address (insn, &XEXP (x, i), cl, action, mode);
else if (fmt[i] == 'E')
for (j = XVECLEN (x, i) - 1; j >= 0; j--)
- scan_rtx_address (insn, &XVECEXP (x, i, j), class, action, mode);
+ scan_rtx_address (insn, &XVECEXP (x, i, j), cl, action, mode);
}
}
static void
-scan_rtx (rtx insn, rtx *loc, enum reg_class class,
+scan_rtx (rtx insn, rtx *loc, enum reg_class cl,
enum scan_actions action, enum op_type type, int earlyclobber)
{
const char *fmt;
return;
case REG:
- scan_rtx_reg (insn, loc, class, action, type, earlyclobber);
+ scan_rtx_reg (insn, loc, cl, action, type, earlyclobber);
return;
case MEM:
return;
case SET:
- scan_rtx (insn, &SET_SRC (x), class, action, OP_IN, 0);
- scan_rtx (insn, &SET_DEST (x), class, action, OP_OUT, 0);
+ scan_rtx (insn, &SET_SRC (x), cl, action, OP_IN, 0);
+ scan_rtx (insn, &SET_DEST (x), cl, action,
+ GET_CODE (PATTERN (insn)) == COND_EXEC ? OP_INOUT : OP_OUT, 0);
return;
case STRICT_LOW_PART:
- scan_rtx (insn, &XEXP (x, 0), class, action, OP_INOUT, earlyclobber);
+ scan_rtx (insn, &XEXP (x, 0), cl, action, OP_INOUT, earlyclobber);
return;
case ZERO_EXTRACT:
case SIGN_EXTRACT:
- scan_rtx (insn, &XEXP (x, 0), class, action,
+ scan_rtx (insn, &XEXP (x, 0), cl, action,
type == OP_IN ? OP_IN : OP_INOUT, earlyclobber);
- scan_rtx (insn, &XEXP (x, 1), class, action, OP_IN, 0);
- scan_rtx (insn, &XEXP (x, 2), class, action, OP_IN, 0);
+ scan_rtx (insn, &XEXP (x, 1), cl, action, OP_IN, 0);
+ scan_rtx (insn, &XEXP (x, 2), cl, action, OP_IN, 0);
return;
case POST_INC:
case POST_MODIFY:
case PRE_MODIFY:
/* Should only happen inside MEM. */
- abort ();
+ gcc_unreachable ();
case CLOBBER:
- scan_rtx (insn, &SET_DEST (x), class, action, OP_OUT, 1);
+ scan_rtx (insn, &SET_DEST (x), cl, action,
+ GET_CODE (PATTERN (insn)) == COND_EXEC ? OP_INOUT : OP_OUT, 0);
return;
case EXPR_LIST:
- scan_rtx (insn, &XEXP (x, 0), class, action, type, 0);
+ scan_rtx (insn, &XEXP (x, 0), cl, action, type, 0);
if (XEXP (x, 1))
- scan_rtx (insn, &XEXP (x, 1), class, action, type, 0);
+ scan_rtx (insn, &XEXP (x, 1), cl, action, type, 0);
return;
default:
for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
{
if (fmt[i] == 'e')
- scan_rtx (insn, &XEXP (x, i), class, action, type, 0);
+ scan_rtx (insn, &XEXP (x, i), cl, action, type, 0);
else if (fmt[i] == 'E')
for (j = XVECLEN (x, i) - 1; j >= 0; j--)
- scan_rtx (insn, &XVECEXP (x, i, j), class, action, type, 0);
+ scan_rtx (insn, &XVECEXP (x, i, j), cl, action, type, 0);
}
}
open_chains = closed_chains = NULL;
- for (insn = bb->head; ; insn = NEXT_INSN (insn))
+ for (insn = BB_HEAD (bb); ; insn = NEXT_INSN (insn))
{
if (INSN_P (insn))
{
{
int matches = recog_op_alt[i][alt].matches;
if (matches >= 0)
- recog_op_alt[i][alt].class = recog_op_alt[matches][alt].class;
+ recog_op_alt[i][alt].cl = recog_op_alt[matches][alt].cl;
if (matches >= 0 || recog_op_alt[i][alt].matched >= 0
|| (predicated && recog_data.operand_type[i] == OP_OUT))
recog_data.operand_type[i] = OP_INOUT;
*recog_data.operand_loc[i] = old_operands[i];
/* Step 2B: Can't rename function call argument registers. */
- if (GET_CODE (insn) == CALL_INSN && CALL_INSN_FUNCTION_USAGE (insn))
+ if (CALL_P (insn) && CALL_INSN_FUNCTION_USAGE (insn))
scan_rtx (insn, &CALL_INSN_FUNCTION_USAGE (insn),
NO_REGS, terminate_all_read, OP_IN, 0);
rtx *loc = recog_data.operand_loc[i];
rtx op = *loc;
- if (GET_CODE (op) == REG
+ if (REG_P (op)
&& REGNO (op) == ORIGINAL_REGNO (op)
&& (recog_data.operand_type[i] == OP_IN
|| recog_data.operand_type[i] == OP_INOUT))
rtx *loc = (i < n_ops
? recog_data.operand_loc[opn]
: recog_data.dup_loc[i - n_ops]);
- enum reg_class class = recog_op_alt[opn][alt].class;
+ enum reg_class cl = recog_op_alt[opn][alt].cl;
enum op_type type = recog_data.operand_type[opn];
/* Don't scan match_operand here, since we've no reg class
continue;
if (recog_op_alt[opn][alt].is_address)
- scan_rtx_address (insn, loc, class, mark_read, VOIDmode);
+ scan_rtx_address (insn, loc, cl, mark_read, VOIDmode);
else
- scan_rtx (insn, loc, class, mark_read, type, 0);
+ scan_rtx (insn, loc, cl, mark_read, type, 0);
}
/* Step 4: Close chains for registers that die here.
/* Step 4B: If this is a call, any chain live at this point
requires a caller-saved reg. */
- if (GET_CODE (insn) == CALL_INSN)
+ if (CALL_P (insn))
{
struct du_chain *p;
for (p = open_chains; p; p = p->next_chain)
{
rtx *loc = recog_data.operand_loc[i];
rtx op = *loc;
- enum reg_class class = recog_op_alt[i][alt].class;
+ enum reg_class cl = recog_op_alt[i][alt].cl;
- if (GET_CODE (op) == REG
+ if (REG_P (op)
&& REGNO (op) == ORIGINAL_REGNO (op))
continue;
- scan_rtx (insn, loc, class, mark_write, OP_OUT,
+ scan_rtx (insn, loc, cl, mark_write, OP_OUT,
recog_op_alt[i][alt].earlyclobber);
}
}
- else if (GET_CODE (insn) != CALL_INSN)
+ else if (!CALL_P (insn))
for (i = 0; i < n_ops + recog_data.n_dups; i++)
{
int opn = i < n_ops ? i : recog_data.dup_num[i - n_ops];
rtx *loc = (i < n_ops
? recog_data.operand_loc[opn]
: recog_data.dup_loc[i - n_ops]);
- enum reg_class class = recog_op_alt[opn][alt].class;
+ enum reg_class cl = recog_op_alt[opn][alt].cl;
if (recog_data.operand_type[opn] == OP_OUT)
- scan_rtx (insn, loc, class, mark_write, OP_OUT,
+ scan_rtx (insn, loc, cl, mark_write, OP_OUT,
recog_op_alt[opn][alt].earlyclobber);
}
scan_rtx (insn, &XEXP (note, 0), NO_REGS, terminate_dead,
OP_IN, 0);
}
- if (insn == bb->end)
+ if (insn == BB_END (bb))
break;
}
return closed_chains;
}
-/* Dump all def/use chains in CHAINS to RTL_DUMP_FILE. They are
+/* Dump all def/use chains in CHAINS to DUMP_FILE. They are
printed in reverse order as that's how we build them. */
static void
{
struct du_chain *this = chains;
int r = REGNO (*this->loc);
- int nregs = HARD_REGNO_NREGS (r, GET_MODE (*this->loc));
- fprintf (rtl_dump_file, "Register %s (%d):", reg_names[r], nregs);
+ int nregs = hard_regno_nregs[r][GET_MODE (*this->loc)];
+ fprintf (dump_file, "Register %s (%d):", reg_names[r], nregs);
while (this)
{
- fprintf (rtl_dump_file, " %d [%s]", INSN_UID (this->insn),
- reg_class_names[this->class]);
+ fprintf (dump_file, " %d [%s]", INSN_UID (this->insn),
+ reg_class_names[this->cl]);
this = this->next_use;
}
- fprintf (rtl_dump_file, "\n");
+ fprintf (dump_file, "\n");
chains = chains->next_chain;
}
}
unsigned int max_value_regs;
};
-static void kill_value_regno (unsigned, struct value_data *);
+static void kill_value_one_regno (unsigned, struct value_data *);
+static void kill_value_regno (unsigned, unsigned, struct value_data *);
static void kill_value (rtx, struct value_data *);
static void set_value_regno (unsigned, enum machine_mode, struct value_data *);
static void init_value_data (struct value_data *);
static void validate_value_data (struct value_data *);
#endif
-/* Kill register REGNO. This involves removing it from any value lists,
- and resetting the value mode to VOIDmode. */
+/* Kill register REGNO. This involves removing it from any value
+ lists, and resetting the value mode to VOIDmode. This is only a
+ helper function; it does not handle any hard registers overlapping
+ with REGNO. */
static void
-kill_value_regno (unsigned int regno, struct value_data *vd)
+kill_value_one_regno (unsigned int regno, struct value_data *vd)
{
unsigned int i, next;
#endif
}
-/* Kill X. This is a convenience function for kill_value_regno
+/* Kill the value in register REGNO for NREGS, and any other registers
+ whose values overlap. */
+
+static void
+kill_value_regno (unsigned int regno, unsigned int nregs,
+ struct value_data *vd)
+{
+ unsigned int j;
+
+ /* Kill the value we're told to kill. */
+ for (j = 0; j < nregs; ++j)
+ kill_value_one_regno (regno + j, vd);
+
+ /* Kill everything that overlapped what we're told to kill. */
+ if (regno < vd->max_value_regs)
+ j = 0;
+ else
+ j = regno - vd->max_value_regs;
+ for (; j < regno; ++j)
+ {
+ unsigned int i, n;
+ if (vd->e[j].mode == VOIDmode)
+ continue;
+ n = hard_regno_nregs[j][vd->e[j].mode];
+ if (j + n > regno)
+ for (i = 0; i < n; ++i)
+ kill_value_one_regno (j + i, vd);
+ }
+}
+
+/* Kill X. This is a convenience function wrapping kill_value_regno
so that we mind the mode the register is in. */
static void
kill_value (rtx x, struct value_data *vd)
{
- /* SUBREGS are supposed to have been eliminated by now. But some
- ports, e.g. i386 sse, use them to smuggle vector type information
- through to instruction selection. Each such SUBREG should simplify,
- so if we get a NULL we've done something wrong elsewhere. */
+ rtx orig_rtx = x;
if (GET_CODE (x) == SUBREG)
- x = simplify_subreg (GET_MODE (x), SUBREG_REG (x),
- GET_MODE (SUBREG_REG (x)), SUBREG_BYTE (x));
+ {
+ x = simplify_subreg (GET_MODE (x), SUBREG_REG (x),
+ GET_MODE (SUBREG_REG (x)), SUBREG_BYTE (x));
+ if (x == NULL_RTX)
+ x = SUBREG_REG (orig_rtx);
+ }
if (REG_P (x))
{
unsigned int regno = REGNO (x);
- unsigned int n = HARD_REGNO_NREGS (regno, GET_MODE (x));
- unsigned int i, j;
+ unsigned int n = hard_regno_nregs[regno][GET_MODE (x)];
- /* Kill the value we're told to kill. */
- for (i = 0; i < n; ++i)
- kill_value_regno (regno + i, vd);
-
- /* Kill everything that overlapped what we're told to kill. */
- if (regno < vd->max_value_regs)
- j = 0;
- else
- j = regno - vd->max_value_regs;
- for (; j < regno; ++j)
- {
- if (vd->e[j].mode == VOIDmode)
- continue;
- n = HARD_REGNO_NREGS (j, vd->e[j].mode);
- if (j + n > regno)
- for (i = 0; i < n; ++i)
- kill_value_regno (j + i, vd);
- }
+ kill_value_regno (regno, n, vd);
}
}
vd->e[regno].mode = mode;
- nregs = HARD_REGNO_NREGS (regno, mode);
+ nregs = hard_regno_nregs[regno][mode];
if (nregs > vd->max_value_regs)
vd->max_value_regs = nregs;
}
rtx x = *px;
struct value_data *vd = data;
- if (GET_RTX_CLASS (GET_CODE (x)) == 'a')
+ if (GET_RTX_CLASS (GET_CODE (x)) == RTX_AUTOINC)
{
x = XEXP (x, 0);
kill_value (x, 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 = hard_regno_nregs[dr][GET_MODE (dest)];
+ sn = hard_regno_nregs[sr][GET_MODE (dest)];
if ((dr > sr && dr < sr + sn)
|| (sr > dr && sr < dr + dn))
return;
We can't properly represent the latter case in our tables, so don't
record anything then. */
- else if (sn < (unsigned int) HARD_REGNO_NREGS (sr, vd->e[sr].mode)
+ else if (sn < (unsigned int) hard_regno_nregs[sr][vd->e[sr].mode]
&& (GET_MODE_SIZE (vd->e[sr].mode) > UNITS_PER_WORD
? WORDS_BIG_ENDIAN : BYTES_BIG_ENDIAN))
return;
/* If SRC had been assigned a mode narrower than the copy, we can't
link DEST into the chain, because not all of the pieces of the
copy came from oldest_regno. */
- else if (sn > (unsigned int) HARD_REGNO_NREGS (sr, vd->e[sr].mode))
+ else if (sn > (unsigned int) hard_regno_nregs[sr][vd->e[sr].mode])
return;
/* Link DR at the end of the value chain used by SR. */
return gen_rtx_raw_REG (new_mode, regno);
else if (mode_change_ok (orig_mode, new_mode, regno))
{
- int copy_nregs = HARD_REGNO_NREGS (copy_regno, copy_mode);
- int use_nregs = HARD_REGNO_NREGS (copy_regno, new_mode);
+ int copy_nregs = hard_regno_nregs[copy_regno][copy_mode];
+ int use_nregs = hard_regno_nregs[copy_regno][new_mode];
int copy_offset
= GET_MODE_SIZE (copy_mode) / copy_nregs * (copy_nregs - use_nregs);
int offset
}
/* Find the oldest copy of the value contained in REGNO that is in
- register class CLASS and has mode MODE. If found, return an rtx
+ register class CL and has mode MODE. If found, return an rtx
of that oldest register, otherwise return NULL. */
static rtx
-find_oldest_value_reg (enum reg_class class, rtx reg, struct value_data *vd)
+find_oldest_value_reg (enum reg_class cl, rtx reg, struct value_data *vd)
{
unsigned int regno = REGNO (reg);
enum machine_mode mode = GET_MODE (reg);
Replacing r9 with r11 is invalid. */
if (mode != vd->e[regno].mode)
{
- if (HARD_REGNO_NREGS (regno, mode)
- > HARD_REGNO_NREGS (regno, vd->e[regno].mode))
+ if (hard_regno_nregs[regno][mode]
+ > hard_regno_nregs[regno][vd->e[regno].mode])
return NULL_RTX;
}
{
enum machine_mode oldmode = vd->e[i].mode;
rtx new;
+ unsigned int last;
- if (TEST_HARD_REG_BIT (reg_class_contents[class], i)
- && (new = maybe_mode_change (oldmode, vd->e[regno].mode, mode, i,
- regno)))
- {
- ORIGINAL_REGNO (new) = ORIGINAL_REGNO (reg);
- REG_ATTRS (new) = REG_ATTRS (reg);
- return new;
- }
+ for (last = i; last < i + hard_regno_nregs[i][mode]; last++)
+ if (!TEST_HARD_REG_BIT (reg_class_contents[cl], last))
+ return NULL_RTX;
+
+ new = maybe_mode_change (oldmode, vd->e[regno].mode, mode, i, regno);
+ if (new)
+ {
+ ORIGINAL_REGNO (new) = ORIGINAL_REGNO (reg);
+ REG_ATTRS (new) = REG_ATTRS (reg);
+ return new;
+ }
}
return NULL_RTX;
}
/* If possible, replace the register at *LOC with the oldest register
- in register class CLASS. Return true if successfully replaced. */
+ in register class CL. Return true if successfully replaced. */
static bool
-replace_oldest_value_reg (rtx *loc, enum reg_class class, rtx insn,
+replace_oldest_value_reg (rtx *loc, enum reg_class cl, rtx insn,
struct value_data *vd)
{
- rtx new = find_oldest_value_reg (class, *loc, vd);
+ rtx new = find_oldest_value_reg (cl, *loc, vd);
if (new)
{
- if (rtl_dump_file)
- fprintf (rtl_dump_file, "insn %u: replaced reg %u with %u\n",
+ if (dump_file)
+ fprintf (dump_file, "insn %u: replaced reg %u with %u\n",
INSN_UID (insn), REGNO (*loc), REGNO (new));
*loc = new;
}
/* Similar to replace_oldest_value_reg, but *LOC contains an address.
- Adapted from find_reloads_address_1. CLASS is INDEX_REG_CLASS or
+ Adapted from find_reloads_address_1. CL is INDEX_REG_CLASS or
BASE_REG_CLASS depending on how the register is being considered. */
static bool
-replace_oldest_value_addr (rtx *loc, enum reg_class class,
+replace_oldest_value_addr (rtx *loc, enum reg_class cl,
enum machine_mode mode, rtx insn,
struct value_data *vd)
{
rtx op1 = orig_op1;
rtx *locI = NULL;
rtx *locB = NULL;
+ rtx *locB_reg = NULL;
if (GET_CODE (op0) == SUBREG)
{
int index_op;
if (REG_OK_FOR_INDEX_P (op0)
- && REG_MODE_OK_FOR_BASE_P (op1, mode))
+ && REG_MODE_OK_FOR_REG_BASE_P (op1, mode))
index_op = 0;
else if (REG_OK_FOR_INDEX_P (op1)
- && REG_MODE_OK_FOR_BASE_P (op0, mode))
+ && REG_MODE_OK_FOR_REG_BASE_P (op0, mode))
index_op = 1;
- else if (REG_MODE_OK_FOR_BASE_P (op1, mode))
+ else if (REG_MODE_OK_FOR_REG_BASE_P (op1, mode))
index_op = 0;
- else if (REG_MODE_OK_FOR_BASE_P (op0, mode))
+ else if (REG_MODE_OK_FOR_REG_BASE_P (op0, mode))
index_op = 1;
else if (REG_OK_FOR_INDEX_P (op1))
index_op = 1;
index_op = 0;
locI = &XEXP (x, index_op);
- locB = &XEXP (x, !index_op);
+ locB_reg = &XEXP (x, !index_op);
}
else if (code0 == REG)
{
changed |= replace_oldest_value_addr (locB,
MODE_BASE_REG_CLASS (mode),
mode, insn, vd);
+ if (locB_reg)
+ changed |= replace_oldest_value_addr (locB_reg,
+ MODE_BASE_REG_REG_CLASS (mode),
+ mode, insn, vd);
return changed;
}
return replace_oldest_value_mem (x, insn, vd);
case REG:
- return replace_oldest_value_reg (loc, class, insn, vd);
+ return replace_oldest_value_reg (loc, cl, insn, vd);
default:
break;
for (i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
{
if (fmt[i] == 'e')
- changed |= replace_oldest_value_addr (&XEXP (x, i), class, mode,
+ changed |= replace_oldest_value_addr (&XEXP (x, i), cl, mode,
insn, vd);
else if (fmt[i] == 'E')
for (j = XVECLEN (x, i) - 1; j >= 0; j--)
- changed |= replace_oldest_value_addr (&XVECEXP (x, i, j), class,
+ changed |= replace_oldest_value_addr (&XVECEXP (x, i, j), cl,
mode, insn, vd);
}
bool changed = false;
rtx insn;
- for (insn = bb->head; ; insn = NEXT_INSN (insn))
+ for (insn = BB_HEAD (bb); ; insn = NEXT_INSN (insn))
{
int n_ops, i, alt, predicated;
bool is_asm;
if (! INSN_P (insn))
{
- if (insn == bb->end)
+ if (insn == BB_END (bb))
break;
else
continue;
{
int matches = recog_op_alt[i][alt].matches;
if (matches >= 0)
- recog_op_alt[i][alt].class = recog_op_alt[matches][alt].class;
+ recog_op_alt[i][alt].cl = recog_op_alt[matches][alt].cl;
if (matches >= 0 || recog_op_alt[i][alt].matched >= 0
|| (predicated && recog_data.operand_type[i] == OP_OUT))
recog_data.operand_type[i] = OP_INOUT;
set it in, make sure that the replacement is valid. */
if (mode != vd->e[regno].mode)
{
- if (HARD_REGNO_NREGS (regno, mode)
- > HARD_REGNO_NREGS (regno, vd->e[regno].mode))
+ if (hard_regno_nregs[regno][mode]
+ > hard_regno_nregs[regno][vd->e[regno].mode])
goto no_move_special_case;
}
new = find_oldest_value_reg (REGNO_REG_CLASS (regno), src, vd);
if (new && validate_change (insn, &SET_SRC (set), new, 0))
{
- if (rtl_dump_file)
- fprintf (rtl_dump_file,
+ if (dump_file)
+ fprintf (dump_file,
"insn %u: replaced reg %u with %u\n",
INSN_UID (insn), regno, REGNO (new));
changed = true;
{
ORIGINAL_REGNO (new) = ORIGINAL_REGNO (src);
REG_ATTRS (new) = REG_ATTRS (src);
- if (rtl_dump_file)
- fprintf (rtl_dump_file,
+ if (dump_file)
+ fprintf (dump_file,
"insn %u: replaced reg %u with %u\n",
INSN_UID (insn), regno, REGNO (new));
changed = true;
continue;
/* Don't replace in asms intentionally referencing hard regs. */
- if (is_asm && GET_CODE (recog_data.operand[i]) == REG
+ if (is_asm && REG_P (recog_data.operand[i])
&& (REGNO (recog_data.operand[i])
== ORIGINAL_REGNO (recog_data.operand[i])))
continue;
if (recog_op_alt[i][alt].is_address)
replaced
= replace_oldest_value_addr (recog_data.operand_loc[i],
- recog_op_alt[i][alt].class,
+ recog_op_alt[i][alt].cl,
VOIDmode, insn, vd);
else if (REG_P (recog_data.operand[i]))
replaced
= replace_oldest_value_reg (recog_data.operand_loc[i],
- recog_op_alt[i][alt].class,
+ recog_op_alt[i][alt].cl,
insn, vd);
- else if (GET_CODE (recog_data.operand[i]) == MEM)
+ else if (MEM_P (recog_data.operand[i]))
replaced = replace_oldest_value_mem (recog_data.operand[i],
insn, vd);
}
- else if (GET_CODE (recog_data.operand[i]) == MEM)
+ else if (MEM_P (recog_data.operand[i]))
replaced = replace_oldest_value_mem (recog_data.operand[i],
insn, vd);
did_replacement:
/* Clobber call-clobbered registers. */
- if (GET_CODE (insn) == CALL_INSN)
+ if (CALL_P (insn))
for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
if (TEST_HARD_REG_BIT (regs_invalidated_by_call, i))
- kill_value_regno (i, vd);
+ kill_value_regno (i, 1, vd);
/* Notice stores. */
note_stores (PATTERN (insn), kill_set_value, vd);
if (set && REG_P (SET_DEST (set)) && REG_P (SET_SRC (set)))
copy_value (SET_DEST (set), SET_SRC (set), vd);
- if (insn == bb->end)
+ if (insn == BB_END (bb))
break;
}
{
struct value_data *all_vd;
bool need_refresh;
- basic_block bb, bbp = 0;
+ basic_block bb;
+ sbitmap visited;
need_refresh = false;
all_vd = xmalloc (sizeof (struct value_data) * last_basic_block);
+ visited = sbitmap_alloc (last_basic_block - (INVALID_BLOCK + 1));
+ sbitmap_zero (visited);
+
FOR_EACH_BB (bb)
{
+ SET_BIT (visited, bb->index - (INVALID_BLOCK + 1));
+
/* If a block has a single predecessor, that we've already
processed, begin with the value data that was live at
the end of the predecessor block. */
/* ??? Ought to use more intelligent queuing of blocks. */
- if (bb->pred)
- for (bbp = bb; bbp && bbp != bb->pred->src; bbp = bbp->prev_bb);
- if (bb->pred
- && ! bb->pred->pred_next
- && ! (bb->pred->flags & (EDGE_ABNORMAL_CALL | EDGE_EH))
- && bb->pred->src != ENTRY_BLOCK_PTR
- && bbp)
- all_vd[bb->index] = all_vd[bb->pred->src->index];
+ if (single_pred_p (bb)
+ && TEST_BIT (visited,
+ single_pred (bb)->index - (INVALID_BLOCK + 1))
+ && ! (single_pred_edge (bb)->flags & (EDGE_ABNORMAL_CALL | EDGE_EH)))
+ all_vd[bb->index] = all_vd[single_pred (bb)->index];
else
init_value_data (all_vd + bb->index);
need_refresh = true;
}
+ sbitmap_free (visited);
+
if (need_refresh)
{
- if (rtl_dump_file)
- fputs ("\n\n", rtl_dump_file);
+ if (dump_file)
+ fputs ("\n\n", dump_file);
/* ??? Irritatingly, delete_noop_moves does not take a set of blocks
to scan, so we have to do a life update with no initial set of
blocks Just In Case. */
- delete_noop_moves (get_insns ());
+ delete_noop_moves ();
update_life_info (NULL, UPDATE_LIFE_GLOBAL_RM_NOTES,
PROP_DEATH_NOTES
| PROP_SCAN_DEAD_CODE
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