2017-06-21 Richard Biener <rguenther@suse.de>
PR tree-optimization/81500
* tree-vect-loop.c (vect_is_simple_reduction): Properly fail if
we didn't identify a reduction path.
* gcc.dg/torture/pr81500.c: New testcase.
From-SVN: r250423
+2017-06-21 Richard Biener <rguenther@suse.de>
+
+ PR tree-optimization/81500
+ * tree-vect-loop.c (vect_is_simple_reduction): Properly fail if
+ we didn't identify a reduction path.
+
2017-07-21 Tom de Vries <tom@codesourcery.com>
Cesar Philippidis <cesar@codesourcery.com>
+2017-06-21 Richard Biener <rguenther@suse.de>
+
+ PR tree-optimization/81500
+ * gcc.dg/torture/pr81500.c: New testcase.
+
2017-07-20 Nathan Sidwell <nathan@acm.org>
* g++.dg/ext/anon-struct6.C: Adjust diag.
--- /dev/null
+/* { dg-do compile } */
+
+typedef int a;
+void c(int *b)
+{
+ int d;
+ a e, f, *g, *h = b;
+ for (; d; d--) {
+ f = *g & 1;
+ *h-- = *g-- | e;
+ e = f;
+ }
+}
}
/* Check whether the reduction path detected is valid. */
- bool fail = false;
+ bool fail = path.length () == 0;
bool neg = false;
for (unsigned i = 1; i < path.length (); ++i)
{
if (dump_enabled_p ())
{
- report_vect_op (MSG_MISSED_OPTIMIZATION,
- SSA_NAME_DEF_STMT
- (USE_FROM_PTR (path[path.length ()-1].second)),
+ report_vect_op (MSG_MISSED_OPTIMIZATION, def_stmt,
"reduction: unknown pattern: ");
}