Hi!
This testcase started failing with r8-2090 and works again starting
with r11-4755.
Tested on x86_64-linux, committed to trunk as obvious.
2020-11-24 Jakub Jelinek <ja...@redhat.com>
PR tree-optimization/97964
* gcc.dg/tree-ssa/pr97964.c: New test.
--- gcc/testsuite/gcc.dg/tree-ssa/pr97964.c.jj 2020-11-24 10:41:09.855529730
+0100
+++ gcc/testsuite/gcc.dg/tree-ssa/pr97964.c 2020-11-24 10:40:52.555724821
+0100
@@ -0,0 +1,18 @@
+/* PR tree-optimization/97964 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-optimized" } */
+/* { dg-final { scan-tree-dump-not "link_failure \\\(\\\);" "optimized" } } */
+
+void link_failure (void);
+
+void
+foo (int a)
+{
+ long b = -2;
+ int c = a > 0;
+ int d = b * c;
+ int e = 1 - d;
+ int t = (-1 / e) == 1;
+ if (t != 0)
+ link_failure ();
+}
Jakub
