re PR tree-optimization/77286 (ICE in fold_convert_loc, at fold-const.c:2248 building 435.gromacs)

2016-08-19  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77286
	* tree-vect-loop-manip.c (slpeel_duplicate_current_defs_from_edges):
	Deal with virtual PHIs being out-of-order.

	* gcc.dg/torture/pr77286.c: New testcase.

From-SVN: r239605

1 files changed, 43 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/torture/pr77286.c b/gcc/testsuite/gcc.dg/torture/pr77286.c
new file mode 100644
index 0000000..0c06100
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr77286.c
@@ -0,0 +1,43 @@
+/* { dg-do compile } */
+/* { dg-additional-options "-mavx2" { target x86_64-*-* i?86-*-* } } */
+
+typedef float real;
+typedef struct
+{
+  int ngtc;
+  real *ref_t;
+  real *tau_t;
+} t_grpopts;
+typedef struct
+{
+  real T;
+  real xi;
+} t_grp_tcstat;
+typedef struct
+{
+  t_grp_tcstat *tcstat;
+} t_groups;
+extern real *save_calloc ();
+void
+nosehoover_tcoupl (t_grpopts * opts, t_groups * grps, real dt, real SAfactor)
+{
+  static real *Qinv = ((void *) 0);
+  int i;
+  real reft = 0, xit, oldxi;
+  if (Qinv == ((void *) 0))
+    {
+      (Qinv) =
+	save_calloc ("Qinv", "coupling.c", 372, (opts->ngtc),
+		     sizeof (*(Qinv)));
+      for (i = 0; i < opts->ngtc; i++)
+	if ((opts->tau_t[i] > 0))
+	  Qinv[i] = 1.0 / opts->tau_t[i];
+    }
+  for (i = 0; (i < opts->ngtc); i++)
+    {
+      reft =
+	(((0.0) >
+	  (opts->ref_t[i] * SAfactor)) ? (0.0) : (opts->ref_t[i] * SAfactor));
+      grps->tcstat[i].xi += dt * Qinv[i] * (grps->tcstat[i].T - reft);
+    }
+}