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tree-vrp.c (vrp_dom_walker::before_dom_childern): Push unwinding markers.

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* tree-vrp.c (vrp_dom_walker::before_dom_childern): Push unwinding
	markers.

	* g++.dg/tree-ssa/ssa-dom-thread-4.c: Update expected output.

From-SVN: r247985
This commit is contained in:
Jeff Law 2017-05-12 11:36:01 -06:00 committed by Jeff Law
parent 284d1f76e9
commit e8bf7c7b75
4 changed files with 13 additions and 6 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2017-05-12 Jeff Law <law@redhat.com>
* tree-vrp.c (vrp_dom_walker::before_dom_childern): Push unwinding
markers.
2017-05-12 Peter Bergner <bergner@vnet.ibm.com>
PR middle-end/80707

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2017-05-12 Jeff Law <law@redhat.com>
* g++.dg/tree-ssa/ssa-dom-thread-4.c: Update expected output.
2017-05-12 Peter Bergner <bergner@vnet.ibm.com>
PR middle-end/80707

8
gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-thread-4.c
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@ -57,12 +57,8 @@ bitmap_ior_and_compl (bitmap dst, const_bitmap a, const_bitmap b,
we should thread all three, but due to a bug in the threading
code we missed the edge when the first conditional is false
(b_elt is zero, which means the second conditional is always
zero.
The first two are caught by VRP1, the last is caught by DOM
along with another jump thread. */
/* { dg-final { scan-tree-dump-times "Threaded" 2 "vrp1" { target { ! logical_op_short_circuit } } } } */
/* { dg-final { scan-tree-dump-times "Threaded" 2 "dom2" { target { ! logical_op_short_circuit } } } } */
zero. VRP1 catches all three. */
/* { dg-final { scan-tree-dump-times "Threaded" 3 "vrp1" { target { ! logical_op_short_circuit } } } } */
/* On targets that define LOGICAL_OP_NON_SHORT_CIRCUIT to 0, we split both
"a_elt || b_elt" and "b_elt && kill_elt" into two conditions each,

2
gcc/tree-vrp.c
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@ -10540,6 +10540,8 @@ vrp_dom_walker::before_dom_children (basic_block bb)
{
gimple_stmt_iterator gsi;
m_avail_exprs_stack->push_marker ();
m_const_and_copies->push_marker ();
for (gsi = gsi_start_nondebug_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
{
gimple *stmt = gsi_stmt (gsi);