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cse.c (cse_process_notes): Copy the propagated value.

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* cse.c (cse_process_notes): Copy the propagated value.
	* local-alloc.c (update_equiv_regs): Copy the memory RTX to be used
	in REG_EQUIV notes.
	* gcse.c (try_replace_reg): Copy the replacement.
	* i386.c (emit_i387_cw_initialization): Copy stored_mode
	(assign_386_stack_local): Always return copied memory expression
	* function.c (instantiate_virtual_regs_in_insn): Copy the operand
	duplicates.

From-SVN: r118665
This commit is contained in:
Jan Hubicka 2006-11-10 22:42:04 +01:00 committed by Jan Hubicka
parent d8d8121add
commit 3e916873cb
6 changed files with 24 additions and 7 deletions
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11
gcc/ChangeLog
View File

@ -1,3 +1,14 @@
2006-11-10 Jan Hubicka <jh@suse.cz>
* cse.c (cse_process_notes): Copy the propagated value.
* local-alloc.c (update_equiv_regs): Copy the memory RTX to be used
in REG_EQUIV notes.
* gcse.c (try_replace_reg): Copy the replacement.
* i386.c (emit_i387_cw_initialization): Copy stored_mode
(assign_386_stack_local): Always return copied memory expression
* function.c (instantiate_virtual_regs_in_insn): Copy the operand
duplicates.
2006-11-10 Jan Hubicka <jh@suse.cz>
* final.c (final): Walk from first instruction.

4
gcc/config/i386/i386.c
View File

@ -8589,7 +8589,7 @@ emit_i387_cw_initialization (int mode)
rtx reg = gen_reg_rtx (HImode);
emit_insn (gen_x86_fnstcw_1 (stored_mode));
emit_move_insn (reg, stored_mode);
emit_move_insn (reg, copy_rtx (stored_mode));
if (TARGET_64BIT || TARGET_PARTIAL_REG_STALL || optimize_size)
{
@ -13520,7 +13520,7 @@ assign_386_stack_local (enum machine_mode mode, enum ix86_stack_slot n)
for (s = ix86_stack_locals; s; s = s->next)
if (s->mode == mode && s->n == n)
return s->rtl;
return copy_rtx (s->rtl);
s = (struct stack_local_entry *)
ggc_alloc (sizeof (struct stack_local_entry));

2
gcc/cse.c
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@ -5817,7 +5817,7 @@ cse_process_notes (rtx x, rtx object)
{
rtx new = gen_lowpart (GET_MODE (x), ent->const_rtx);
if (new)
return new;
return copy_rtx (new);
}
}

2
gcc/function.c
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@ -1540,7 +1540,7 @@ instantiate_virtual_regs_in_insn (rtx insn)
/* Propagate operand changes into the duplicates. */
for (i = 0; i < recog_data.n_dups; ++i)
*recog_data.dup_loc[i]
= recog_data.operand[(unsigned)recog_data.dup_num[i]];
= copy_rtx (recog_data.operand[(unsigned)recog_data.dup_num[i]]);
/* Force re-recognition of the instruction for validation. */
INSN_CODE (insn) = -1;

5
gcc/gcse.c
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@ -2647,6 +2647,11 @@ try_replace_reg (rtx from, rtx to, rtx insn)
int success = 0;
rtx set = single_set (insn);
/* Usually we substitute easy stuff, so we won't copy everything.
We however need to take care to not duplicate non-trivial CONST
expressions. */
to = copy_rtx (to);
validate_replace_src_group (from, to, insn);
if (num_changes_pending () && apply_change_group ())
success = 1;

7
gcc/local-alloc.c
View File

@ -907,7 +907,7 @@ update_equiv_regs (void)
REG_EQUAL note on the insn. Since this note would be redundant,
there's no point creating it earlier than here. */
if (! note && ! rtx_varies_p (src, 0))
note = set_unique_reg_note (insn, REG_EQUAL, src);
note = set_unique_reg_note (insn, REG_EQUAL, copy_rtx (src));
/* Don't bother considering a REG_EQUAL note containing an EXPR_LIST
since it represents a function call */
@ -953,7 +953,8 @@ update_equiv_regs (void)
if (note == 0 && REG_BASIC_BLOCK (regno) >= 0
&& MEM_P (SET_SRC (set))
&& validate_equiv_mem (insn, dest, SET_SRC (set)))
REG_NOTES (insn) = note = gen_rtx_EXPR_LIST (REG_EQUIV, SET_SRC (set),
REG_NOTES (insn) = note = gen_rtx_EXPR_LIST (REG_EQUIV,
copy_rtx (SET_SRC (set)),
REG_NOTES (insn));
if (note)
@ -1061,7 +1062,7 @@ update_equiv_regs (void)
&& ! memref_used_between_p (dest, init_insn, insn))
{
REG_NOTES (init_insn)
= gen_rtx_EXPR_LIST (REG_EQUIV, dest,
= gen_rtx_EXPR_LIST (REG_EQUIV, copy_rtx (dest),
REG_NOTES (init_insn));
/* This insn makes the equivalence, not the one initializing
the register. */