This adds the testcase from the PR.
Pushed.
2021-09-01 Richard Biener <rguent...@suse.de>
PR tree-optimization/102149
* gcc.dg/torture/pr102149.c: New testcase.
---
gcc/testsuite/gcc.dg/torture/pr102149.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
create mode 100644 gcc/testsuite/gcc.dg/torture/pr102149.c
diff --git a/gcc/testsuite/gcc.dg/torture/pr102149.c
b/gcc/testsuite/gcc.dg/torture/pr102149.c
new file mode 100644
index 00000000000..34a8c213133
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr102149.c
@@ -0,0 +1,19 @@
+/* { dg-do run } */
+/* { dg-additional-options "-fno-vect-cost-model" } */
+
+int a[8];
+int *b = &a[6];
+char c;
+int main()
+{
+ int d = 7;
+ for (; d >= 0; d--)
+ {
+ *b = 1;
+ c = a[d] >> 3;
+ a[d] = c;
+ }
+ if (a[6] != 1)
+ __builtin_abort ();
+ return 0;
+}
--
2.31.1
