./:

	PR tree-optimization/31522
	* tree-vrp.c (vr_phi_edge_counts): New static variable.
	(vrp_initialize): Allocate vr_phi_edge_counts.
	(vrp_visit_phi_node): Don't push to infinity if we saw a new
	executable edge.  Drop test for all constants.
	(vrp_finalize): Free vrp_phi_edge_counts.
testsuite/:
	PR tree-optimization/31522
	* gcc.dg/Wstrict-overflow-16.c: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@123908 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 11 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/Wstrict-overflow-16.c b/gcc/testsuite/gcc.dg/Wstrict-overflow-16.c
new file mode 100644
index 00000000000..e8c31cf5046
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/Wstrict-overflow-16.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options "-fstrict-overflow -O2 -Wstrict-overflow" } */
+
+/* From PR 31522.  */
+
+int f (int x) {
+  int y;
+  if (x <= 4) y = 1;
+  else y = x / 4;
+  return y <= 0;
+}