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tree-ssa-uninit.c (find_uninit_use): Disregard debug stmts, use operand helpers.

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2010-08-18  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-uninit.c (find_uninit_use): Disregard debug stmts,
	use operand helpers.

From-SVN: r163340
This commit is contained in:
Richard Guenther 2010-08-18 14:18:51 +00:00 committed by Richard Biener
parent e5f5fa2da0
commit 480161b52b
2 changed files with 12 additions and 17 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2010-08-18 Richard Guenther <rguenther@suse.de>
* tree-ssa-uninit.c (find_uninit_use): Disregard debug stmts,
use operand helpers.
2010-08-18 Paolo Bonzini <bonzini@gnu.org>
PR middle-end/45292

24
gcc/tree-ssa-uninit.c
View File

@ -1598,27 +1598,17 @@ find_uninit_use (gimple phi, unsigned uninit_opnds,
struct pointer_set_t *visited_phis;
basic_block use_bb;
use_stmt = use_p->loc.stmt;
use_stmt = USE_STMT (use_p);
if (is_gimple_debug (use_stmt))
continue;
visited_phis = pointer_set_create ();
use_bb = gimple_bb (use_stmt);
if (gimple_code (use_stmt) == GIMPLE_PHI)
{
unsigned i, n;
n = gimple_phi_num_args (use_stmt);
/* Find the matching phi argument of the use. */
for (i = 0; i < n; ++i)
{
if (gimple_phi_arg_def_ptr (use_stmt, i) == use_p->use)
{
edge e = gimple_phi_arg_edge (use_stmt, i);
use_bb = e->src;
break;
}
}
}
use_bb = gimple_phi_arg_edge (use_stmt,
PHI_ARG_INDEX_FROM_USE (use_p))->src;
else
use_bb = gimple_bb (use_stmt);
if (is_use_properly_guarded (use_stmt,
use_bb,