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builtins.c (purge_builtin_constant_p): Scan insn stream sequentially rather than by basic block.

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* builtins.c (purge_builtin_constant_p): Scan insn stream
	sequentially rather than by basic block.
	* function.c (purge_addressof): Simplify test with INSN_P.

From-SVN: r61789
This commit is contained in:
Roger Sayle 2003-01-25 17:47:26 +00:00 • committed by Roger Sayle
parent ad487c3816
commit 2adc9b0fc5
3 changed files with 20 additions and 21 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2002-01-25 Roger Sayle <roger@eyesopen.com>
* builtins.c (purge_builtin_constant_p): Scan insn stream
sequentially rather than by basic block.
* function.c (purge_addressof): Simplify test with INSN_P.
2003-01-25 Kazu Hirata <kazu@cs.umass.edu>
* combine.c (simplify_comparison, case AND): Remove a redundant

32
gcc/builtins.c
View file

@ -4720,26 +4720,20 @@ default_expand_builtin (exp, target, subtarget, mode, ignore)
void
purge_builtin_constant_p ()
{
rtx insn, done, set;
rtx arg, new, note;
basic_block bb;
rtx insn, set, arg, new, note;
FOR_EACH_BB (bb)
{
done = NEXT_INSN (bb->end);
for (insn = bb->head; insn != done; insn = NEXT_INSN (insn))
if (INSN_P (insn)
&& (set = single_set (insn)) != NULL_RTX
&& GET_CODE (SET_SRC (set)) == CONSTANT_P_RTX)
{
arg = XEXP (SET_SRC (set), 0);
new = CONSTANT_P (arg) ? const1_rtx : const0_rtx;
validate_change (insn, &SET_SRC (set), new, 0);
for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
if (INSN_P (insn)
&& (set = single_set (insn)) != NULL_RTX
&& GET_CODE (SET_SRC (set)) == CONSTANT_P_RTX)
{
arg = XEXP (SET_SRC (set), 0);
new = CONSTANT_P (arg) ? const1_rtx : const0_rtx;
validate_change (insn, &SET_SRC (set), new, 0);
/* Remove the REG_EQUAL note from the insn. */
if ((note = find_reg_note (insn, REG_EQUAL, NULL_RTX)) != 0)
remove_note (insn, note);
}
}
/* Remove the REG_EQUAL note from the insn. */
if ((note = find_reg_note (insn, REG_EQUAL, NULL_RTX)) != 0)
remove_note (insn, note);
}
}

3
gcc/function.c
View file

@ -3372,8 +3372,7 @@ purge_addressof (insns)
compute_insns_for_mem (insns, NULL_RTX, ht);
for (insn = insns; insn; insn = NEXT_INSN (insn))
if (GET_CODE (insn) == INSN || GET_CODE (insn) == JUMP_INSN
|| GET_CODE (insn) == CALL_INSN)
if (INSN_P (insn))
{
if (! purge_addressof_1 (&PATTERN (insn), insn,
asm_noperands (PATTERN (insn)) > 0, 0, ht))