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Fix a minor issue found by a static analyzer (PR66206). 

PR rtl-optimization/66206
	* bt-load.c (find_btr_use): Change first arg to be a pointer to an rtx.
	All callers changed.

From-SVN: r232124
This commit is contained in:
Bernd Schmidt 2016-01-07 12:15:59 +00:00 committed by Bernd Schmidt
parent fec64afc1a
commit c6a0add9d0
2 changed files with 15 additions and 10 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2015-12-15 Bernd Schmidt <bschmidt@redhat.com>
PR rtl-optimization/66206
* bt-load.c (find_btr_use): Change first arg to be a pointer to an rtx.
All callers changed.
2016-01-07 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/69141

19
gcc/bt-load.c
View File

@ -1,4 +1,3 @@
/* Perform branch target register load optimizations.
Copyright (C) 2001-2016 Free Software Foundation, Inc.
@ -188,14 +187,14 @@ basic_block_freq (const_basic_block bb)
return bb->frequency;
}
/* If X references (sets or reads) any branch target register, return one
such register. If EXCLUDEP is set, disregard any references within
that location. */
/* If the rtx at *XP references (sets or reads) any branch target
register, return one such register. If EXCLUDEP is set, disregard
any references within that location. */
static rtx *
find_btr_use (rtx x, rtx *excludep = 0)
find_btr_use (rtx *xp, rtx *excludep = 0)
{
subrtx_ptr_iterator::array_type array;
FOR_EACH_SUBRTX_PTR (iter, array, &x, NONCONST)
FOR_EACH_SUBRTX_PTR (iter, array, xp, NONCONST)
{
rtx *loc = *iter;
if (loc == excludep)
@ -232,7 +231,7 @@ insn_sets_btr_p (const rtx_insn *insn, int check_const, int *regno)
if (REG_P (dest)
&& TEST_HARD_REG_BIT (all_btrs, REGNO (dest)))
{
gcc_assert (!find_btr_use (src));
gcc_assert (!find_btr_use (&src));
if (!check_const || CONSTANT_P (src))
{
@ -324,7 +323,7 @@ new_btr_user (basic_block bb, int insn_luid, rtx_insn *insn)
to decide whether we can replace all target register
uses easily.
*/
rtx *usep = find_btr_use (PATTERN (insn));
rtx *usep = find_btr_use (&PATTERN (insn));
rtx use;
btr_user *user = NULL;
@ -335,7 +334,7 @@ new_btr_user (basic_block bb, int insn_luid, rtx_insn *insn)
/* We want to ensure that USE is the only use of a target
register in INSN, so that we know that to rewrite INSN to use
a different target register, all we have to do is replace USE. */
unambiguous_single_use = !find_btr_use (PATTERN (insn), usep);
unambiguous_single_use = !find_btr_use (&PATTERN (insn), usep);
if (!unambiguous_single_use)
usep = NULL;
}
@ -511,7 +510,7 @@ compute_defs_uses_and_gen (btr_heap_t *all_btr_defs, btr_def **def_array,
}
else
{
if (find_btr_use (PATTERN (insn)))
if (find_btr_use (&PATTERN (insn)))
{
btr_user *user = new_btr_user (bb, insn_luid, insn);