/* Save and restore call-clobbered registers which are live across a call.
Copyright (C) 1989, 1992, 1994, 1995, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GCC.
[(int) MODE_BASE_REG_CLASS (regno_save_mode [i][1])], i))
break;
- if (i == FIRST_PSEUDO_REGISTER)
- abort ();
+ gcc_assert (i < FIRST_PSEUDO_REGISTER);
addr_reg = gen_rtx_REG (Pmode, i);
{
unsigned int regno = reg_renumber[i];
unsigned int endregno
- = regno + HARD_REGNO_NREGS (regno, GET_MODE (regno_reg_rtx[i]));
+ = regno + hard_regno_nregs[regno][GET_MODE (regno_reg_rtx[i])];
for (r = regno; r < endregno; r++)
if (call_used_regs[r])
next = chain->next;
- if (chain->is_caller_save_insn)
- abort ();
+ gcc_assert (!chain->is_caller_save_insn);
- if (GET_RTX_CLASS (code) == 'i')
+ if (INSN_P (insn))
{
/* If some registers have been saved, see if INSN references
any of them. We must restore them before the insn if so. */
regno += insert_restore (chain, 1, regno, MOVE_MAX_WORDS, save_mode);
}
- if (code == CALL_INSN)
+ if (code == CALL_INSN && ! find_reg_note (insn, REG_NORETURN, NULL))
{
int regno;
HARD_REG_SET hard_regs_to_save;
{
int r = reg_renumber[regno];
int nregs;
-
- if (r >= 0)
- {
- enum machine_mode mode;
-
- nregs = HARD_REGNO_NREGS (r, PSEUDO_REGNO_MODE (regno));
- mode = HARD_REGNO_CALLER_SAVE_MODE
- (r, nregs, PSEUDO_REGNO_MODE (regno));
- if (GET_MODE_BITSIZE (mode)
- > GET_MODE_BITSIZE (save_mode[r]))
- save_mode[r] = mode;
- while (nregs-- > 0)
- SET_HARD_REG_BIT (hard_regs_to_save, r + nregs);
- }
- else
- abort ();
+ enum machine_mode mode;
+
+ gcc_assert (r >= 0);
+ nregs = hard_regno_nregs[r][PSEUDO_REGNO_MODE (regno)];
+ mode = HARD_REGNO_CALLER_SAVE_MODE
+ (r, nregs, PSEUDO_REGNO_MODE (regno));
+ if (GET_MODE_BITSIZE (mode)
+ > GET_MODE_BITSIZE (save_mode[r]))
+ save_mode[r] = mode;
+ while (nregs-- > 0)
+ SET_HARD_REG_BIT (hard_regs_to_save, r + nregs);
});
/* Record all registers set in this call insn. These don't need
if (n_regs_saved)
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
if (TEST_HARD_REG_BIT (hard_regs_saved, regno))
- regno += insert_restore (chain, GET_CODE (insn) == JUMP_INSN,
+ regno += insert_restore (chain, JUMP_P (insn),
regno, MOVE_MAX_WORDS, save_mode);
}
}
if (GET_CODE (reg) == SUBREG)
{
rtx inner = SUBREG_REG (reg);
- if (GET_CODE (inner) != REG || REGNO (inner) >= FIRST_PSEUDO_REGISTER)
+ if (!REG_P (inner) || REGNO (inner) >= FIRST_PSEUDO_REGISTER)
return;
regno = subreg_hard_regno (reg, 1);
}
- else if (GET_CODE (reg) == REG
+ else if (REG_P (reg)
&& REGNO (reg) < FIRST_PSEUDO_REGISTER)
regno = REGNO (reg);
else
return;
- endregno = regno + HARD_REGNO_NREGS (regno, mode);
+ endregno = regno + hard_regno_nregs[regno][mode];
for (i = regno; i < endregno; i++)
SET_HARD_REG_BIT (this_insn_sets, i);
if (GET_CODE (setter) == CLOBBER)
return;
- if (GET_CODE (reg) == SUBREG && GET_CODE (SUBREG_REG (reg)) == REG)
+ if (GET_CODE (reg) == SUBREG && REG_P (SUBREG_REG (reg)))
{
offset = subreg_regno_offset (REGNO (SUBREG_REG (reg)),
GET_MODE (SUBREG_REG (reg)),
reg = SUBREG_REG (reg);
}
- if (GET_CODE (reg) != REG || REGNO (reg) >= FIRST_PSEUDO_REGISTER)
+ if (!REG_P (reg) || REGNO (reg) >= FIRST_PSEUDO_REGISTER)
return;
regno = REGNO (reg) + offset;
- endregno = regno + HARD_REGNO_NREGS (regno, mode);
+ endregno = regno + hard_regno_nregs[regno][mode];
for (i = regno; i < endregno; i++)
SET_REGNO_REG_SET ((regset) data, i);
{
x = SET_DEST (x);
code = GET_CODE (x);
- if (code == REG || code == PC || code == CC0
- || (code == SUBREG && GET_CODE (SUBREG_REG (x)) == REG
+ if ((code == REG && REGNO (x) < FIRST_PSEUDO_REGISTER)
+ || code == PC || code == CC0
+ || (code == SUBREG && REG_P (SUBREG_REG (x))
+ && REGNO (SUBREG_REG (x)) < FIRST_PSEUDO_REGISTER
/* If we're setting only part of a multi-word register,
we shall mark it as referenced, because the words
that are not being set should be restored. */
if (hardregno >= 0)
{
- int nregs = HARD_REGNO_NREGS (hardregno, GET_MODE (x));
+ int nregs = hard_regno_nregs[hardregno][GET_MODE (x)];
while (nregs-- > 0)
SET_HARD_REG_BIT (referenced_regs, hardregno + nregs);
}
or SET_SRC. Instead of doing so and causing a crash later, check
for this common case and abort here instead. This will remove one
step in debugging such problems. */
-
- if (regno_save_mem[regno][1] == 0)
- abort ();
+ gcc_assert (regno_save_mem[regno][1]);
/* Get the pattern to emit and update our status.
mem = regno_save_mem [regno][numregs];
if (save_mode [regno] != VOIDmode
&& save_mode [regno] != GET_MODE (mem)
- && numregs == (unsigned int) HARD_REGNO_NREGS (regno, save_mode [regno]))
+ && numregs == (unsigned int) hard_regno_nregs[regno][save_mode [regno]])
mem = adjust_address (mem, save_mode[regno], 0);
+ else
+ mem = copy_rtx (mem);
pat = gen_rtx_SET (VOIDmode,
gen_rtx_REG (GET_MODE (mem),
regno), mem);
n_regs_saved--;
}
- /* Tell our callers how many extra registers we saved/restored */
+ /* Tell our callers how many extra registers we saved/restored. */
return numregs - 1;
}
or SET_SRC. Instead of doing so and causing a crash later, check
for this common case and abort here instead. This will remove one
step in debugging such problems. */
-
- if (regno_save_mem[regno][1] == 0)
- abort ();
+ gcc_assert (regno_save_mem[regno][1]);
/* Get the pattern to emit and update our status.
mem = regno_save_mem [regno][numregs];
if (save_mode [regno] != VOIDmode
&& save_mode [regno] != GET_MODE (mem)
- && numregs == (unsigned int) HARD_REGNO_NREGS (regno, save_mode [regno]))
+ && numregs == (unsigned int) hard_regno_nregs[regno][save_mode [regno]])
mem = adjust_address (mem, save_mode[regno], 0);
+ else
+ mem = copy_rtx (mem);
pat = gen_rtx_SET (VOIDmode, mem,
gen_rtx_REG (GET_MODE (mem),
regno));
n_regs_saved++;
}
- /* Tell our callers how many extra registers we saved/restored */
+ /* Tell our callers how many extra registers we saved/restored. */
return numregs - 1;
}
isn't a problem. We do, however, assume here that CALL_INSNs don't
reference CC0. Guard against non-INSN's like CODE_LABEL. */
- if ((GET_CODE (insn) == INSN || GET_CODE (insn) == JUMP_INSN)
+ if ((NONJUMP_INSN_P (insn) || JUMP_P (insn))
&& before_p
&& reg_referenced_p (cc0_rtx, PATTERN (insn)))
chain = chain->prev, insn = chain->insn;
rtx reg = XEXP (link, 0);
int regno, i;
- if (GET_CODE (reg) != REG)
- abort ();
-
+ gcc_assert (REG_P (reg));
regno = REGNO (reg);
if (regno >= FIRST_PSEUDO_REGISTER)
regno = reg_renumber[regno];
if (regno < 0)
continue;
- for (i = HARD_REGNO_NREGS (regno, GET_MODE (reg)) - 1;
+ for (i = hard_regno_nregs[regno][GET_MODE (reg)] - 1;
i >= 0; i--)
SET_REGNO_REG_SET (&new->live_throughout, regno + i);
}
}
CLEAR_REG_SET (&new->dead_or_set);
- if (chain->insn == BLOCK_HEAD (chain->block))
- BLOCK_HEAD (chain->block) = new->insn;
+ if (chain->insn == BB_HEAD (BASIC_BLOCK (chain->block)))
+ BB_HEAD (BASIC_BLOCK (chain->block)) = new->insn;
}
else
{
note_stores (PATTERN (chain->insn), add_stored_regs,
&new->live_throughout);
CLEAR_REG_SET (&new->dead_or_set);
- if (chain->insn == BLOCK_END (chain->block))
- BLOCK_END (chain->block) = new->insn;
+ if (chain->insn == BB_END (BASIC_BLOCK (chain->block)))
+ BB_END (BASIC_BLOCK (chain->block)) = new->insn;
}
new->block = chain->block;
new->is_caller_save_insn = 1;
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