testcase: Add testcase for already fixed PR [PR118476]

This testcase was fixed by r15-3052-gc7b76a076cb2c6ded but is
a testcase that failed in a different fashion and a much older
failure than the one added with r15-3052.

Pushed as obvious after a quick test.

	PR tree-optimization/118476

gcc/testsuite/ChangeLog:

	* gcc.dg/torture/pr118476-1.c: New test.

Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>

diff --git a/gcc/testsuite/gcc.dg/torture/pr118476-1.c b/gcc/testsuite/gcc.dg/torture/pr118476-1.c
new file mode 100644 (file)
index 0000000..3350940
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr118476-1.c
@@ -0,0 +1,14 @@
+/* { dg-do compile } */
+
+/* PR tree-optimization/118476 */
+
+typedef unsigned long long poly64x1 __attribute__((__vector_size__(1*sizeof(long long))));
+
+poly64x1 vext_p64(poly64x1 a, poly64x1 b, const int n)
+{
+  poly64x1 r = a;
+  unsigned src = (unsigned)n;
+  long long t = b[0];
+  r[0] = (src < 1) ? a[src] : t;
+  return r;
+}